3,549 results match your criteria Ionizing Radiation Exposure Medical Imaging


Mitigation of radiation-induced pneumonitis and lung fibrosis using alpha-lipoic acid and resveratrol.

Antiinflamm Antiallergy Agents Med Chem 2019 Mar 19. Epub 2019 Mar 19.

Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah. Iran.

Background: Lung is a late response and radiosensitive organ. Studies have shown that exposure of the lung to acute and high doses of radiation following inhalation of radioactive agents or an accidental radiological event may lead to pneumonitis and fibrosis, which are associated with a risk of death. So far, some agents have been studied for mitigation of pneumonitis and fibrosis following exposure of murine lung tissues to ionizing radiation. Read More

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http://dx.doi.org/10.2174/1871523018666190319144020DOI Listing

Renal Colic Imaging: Myths, Recent Trends, and Controversies.

Can Assoc Radiol J 2019 Mar 7. Epub 2019 Mar 7.

NYU Winthrop-University Hospital, Mineola, New York, USA.

There has been a substantial increase in the utilization of imaging, particularly of multi-detector computed tomography (MDCT), for the evaluation of patients with suspected urolithiasis over the past 2 decades. While the diagnostic accuracy of computed tomography (CT) for urolithiasis is excellent, it has also resulted in substantial medical expenditures and increased ionizing radiation exposure. This is especially concerning in patients with known nephrolithiasis and in younger patients. Read More

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http://dx.doi.org/10.1016/j.carj.2018.09.008DOI Listing
March 2019
2 Reads

Patient Radiation Dosage During Lower Extremity Endovascular Intervention.

JACC Cardiovasc Interv 2019 Mar;12(5):473-480

Division of Cardiovascular Medicine, Warren Alpert Medical School of Brown University and Lifespan Cardiovascular Institute, Providence, Rhode Island. Electronic address:

Objectives: The aims of this study were to determine the incidence of actionably high radiation dosages and to identify predictors of increased patient dosage.

Background: Peripheral endovascular intervention using fluoroscopic imaging has become a mainstay of treatment for lower extremity peripheral artery disease but exposes patients to ionizing radiation.

Methods: Patient radiation dosage, quantified as dose-area product (DAP), was obtained from the National Cardiovascular Data Registry Peripheral Vascular Intervention Registry. Read More

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http://dx.doi.org/10.1016/j.jcin.2018.11.005DOI Listing

Letter: Evaluating the Cumulative Impact of Ionizing Radiation Exposure With Diagnostic Genetics.

Authors:
Hai Qiang Wang

Ann Lab Med 2019 Jul;39(4):417-418

Institute of Integrative Medicine, Shaanxi University of Chinese Medicine, Xi'an, China.

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http://dx.doi.org/10.3343/alm.2019.39.4.417DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6400715PMC

Low-Dose Radiation Advances in Coronary Computed Tomography Angiography in the Diagnosis of Coronary Artery Disease.

Curr Cardiol Rev 2019 Feb 22. Epub 2019 Feb 22.

Morriston Hospital, Heol Maes Eglwys, Morriston, Swansea, SA6 6NL. United Kingdom.

Background: Coronary computed tomography angiography (CCTA) is now widely used in the diagnosis of coronary artery disease since it is a rapid, minimally invasive test with a diagnostic accuracy comparable to coronary angiography. However, to meet demands for increasing spatial and temporal resolution, higher x-ray radiation doses are required to circumvent the resulting increase in image noise. Exposure to high doses of ionizing radiation with CT imaging is a major health concern due to the potential risk of radiation-associated malignancy. Read More

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http://dx.doi.org/10.2174/1573403X15666190222163737DOI Listing
February 2019

Radiation Safety in Emergency Medicine: Balancing the Benefits and Risks.

Korean J Radiol 2019 Mar;20(3):399-404

Department of Biomedical Imaging, University Malaya Research Imaging Centre (UMRIC), Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.

The use of computed tomography (CT) in emergency departments has increased over several decades, as physicians increasingly depend on imaging for diagnoses. Patients and medical personnel are put at risk due to frequent exposure to and higher levels of radiation, with very little evidence of improvements in outcomes. Here, we explore why CT imaging has a tendency to be overused in emergency departments and the obstacles that medical personnel face in ensuring patient safety. Read More

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https://synapse.koreamed.org/DOIx.php?id=10.3348/kjr.2018.04
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http://dx.doi.org/10.3348/kjr.2018.0416DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6389812PMC
March 2019
1 Read

Acute abdominal pain in patients with Crohn's disease: what urgent imaging tests should be done?

Radiologia 2019 Feb 13. Epub 2019 Feb 13.

Servicio de Radiología, Hospital Universitario Ramón y Cajal, Madrid, España.

Crohn's disease is an autoimmune disease that predominantly affects the gastrointestinal tract. Crohn's disease is diagnosed at a young age and runs a chronic course with acute flare-ups. When patients with Crohn's disease present with flare-ups at the emergency department, they are usually managed in a way similar to patients with acute abdomen; there is no consensus about the most appropriate imaging work-up for patients with flare-ups of Crohn's disease. Read More

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http://dx.doi.org/10.1016/j.rx.2018.12.003DOI Listing
February 2019
1 Read

A "one-stop-shop" 4D CTA protocol using 320-row CT for advanced imaging in acute ischemic stroke: a technical note.

Eur Radiol 2019 Feb 15. Epub 2019 Feb 15.

Service d'Imagerie Médicale, CHU de la Cavale Blanche, Boulevard Tanguy Prigent, 29609, Brest Cedex, France.

This technical note describes a novel CT scan protocol that includes a non-enhanced CT, dynamic CTA, and perfusion of the whole brain and CTA of the carotid arteries using a 320-row area detector CT scanner, with a unique contrast injection and acceptable radiation exposure dose in patients presenting with acute ischemic stroke. The acquisition parameters and reconstruction parameters will be discussed including the use of model-based iterative reconstruction (MBIR), time summing (tMIP), and subtraction techniques to optimize the results of this protocol.Key Points• Scanning on a 320-row area detector CT can achieve both brain perfusion with dynamic angiography and reconstructed arterial and venous CTA, and supra aortic trunk angiography, in a single acquisition. Read More

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http://dx.doi.org/10.1007/s00330-019-06041-xDOI Listing
February 2019
1 Read

Phenotypic Plasticity of Invasive Edge Glioma Stem-like Cells in Response to Ionizing Radiation.

Cell Rep 2019 Feb;26(7):1893-1905.e7

Department of Translational Molecular Pathology and Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. Electronic address:

Unresectable glioblastoma (GBM) cells in the invading tumor edge can act as seeds for recurrence. The molecular and phenotypic properties of these cells remain elusive. Here, we report that the invading edge and tumor core have two distinct types of glioma stem-like cells (GSCs) that resemble proneural (PN) and mesenchymal (MES) subtypes, respectively. Read More

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http://dx.doi.org/10.1016/j.celrep.2019.01.076DOI Listing
February 2019
3 Reads
7.207 Impact Factor

Understanding, justifying, and optimizing radiation exposure for CT imaging in nephrourology.

Nat Rev Urol 2019 Feb 6. Epub 2019 Feb 6.

Department of Radiology, Mayo Clinic, Rochester, MN, USA.

An estimated 4-5 million CT scans are performed in the USA every year to investigate nephrourological diseases such as urinary stones and renal masses. Despite the clinical benefits of CT imaging, concerns remain regarding the potential risks associated with exposure to ionizing radiation. To assess the potential risk of harmful biological effects from exposure to ionizing radiation, understanding the mechanisms by which radiation damage and repair occur is essential. Read More

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http://www.nature.com/articles/s41585-019-0148-8
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http://dx.doi.org/10.1038/s41585-019-0148-8DOI Listing
February 2019
3 Reads

Radiation exposure in infants with oesophageal atresia and tracheo-oesophageal fistula.

Pediatr Surg Int 2019 Apr 1;35(4):509-515. Epub 2019 Feb 1.

Department of Surgery, Children's Hospital at Westmead, Locked Bag 4001 Westmead, Sydney, NSW, 2145, Australia.

Purpose: Oesophageal atresia and tracheo-oesophageal atresia require surgical repair in early infancy. These children have significant disease-related morbidity requiring frequent radiological examinations resulting in an increased malignancy risk.

Methods: A single-centre, retrospective review was performed of radiation exposure in children with OA/TOF born 2011-2015. Read More

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http://dx.doi.org/10.1007/s00383-019-04450-zDOI Listing

Impact of the Image Gently Campaign on Computerized Tomography Use for Evaluation of Pediatric Nephrolithiasis.

J Urol 2019 Jan 31. Epub 2019 Jan 31.

Department of Urology, University of Michigan, Ann Arbor, Michigan.

Purpose: The Image Gently® campaign was launched by several radiological societies in 2007 to promote safe imaging in children. A goal of the campaign was to reduce ionizing radiation exposure in children. Given the recurrent nature of kidney stones, affected children are at risk for unnecessary ionizing radiation exposure from computerized tomography. Read More

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http://dx.doi.org/10.1097/JU.0000000000000030DOI Listing
January 2019
2 Reads

The awareness of caregivers about their children's exposure to ionizing radiation accompanying medical procedures: the assessment study.

Int J Occup Med Environ Health 2019 Feb 24;32(1):65-73. Epub 2019 Jan 24.

Poznan University of Medical Sciences, Poznań, Poland (Department of Physiology).

Objectives: The aim of the study was a survey-based assessment concerning parents of children undergoing CT examinations and their knowledge of detailed information about procedures involved in imaging diagnostics.

Material And Methods: A statistical analysis of 108 surveys of parents of children undergoing CT studies in the Department of Pediatric Radiology in Poznań, Poland was done, with the use of Statistica software.

Results: In result of the evaluation of all subsections of the substantive question number, the majority of answers were incorrect (68-98%). Read More

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http://dx.doi.org/10.13075/ijomeh.1896.01223DOI Listing
February 2019
7 Reads

Effect of radiant exposure and UV accelerated aging on physico-chemical and mechanical properties of composite resins.

J Appl Oral Sci 2019 Jan 7;27:e20180075. Epub 2019 Jan 7.

Universidad Autónoma del Estado de Hidalgo, Instituto de Ciencias de la Salud, Área Académica de Odontología, Pachuca de Soto, México.

Currently, there is no consensus in terms of defining the minimum radiant exposure values necessary for achieving adequate properties of composite resin. In addition, the long-term influence that radiant exposure has on the properties of composite resins is still questionable.

Objective: The objective of this study was to evaluate the effect of radiant exposure and UV accelerated aging on the physico-chemical and mechanical properties of micro-hybrid and nanofilled composite resins. Read More

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http://www.scielo.br/scielo.php?script=sci_arttext&pid=S
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http://dx.doi.org/10.1590/1678-7757-2018-0075DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6322643PMC
January 2019
3 Reads

Metformin Protects Against Radiation-Induced Pneumonitis and Fibrosis and Attenuates Upregulation of Dual Oxidase Genes Expression.

Adv Pharm Bull 2018 Nov 29;8(4):697-704. Epub 2018 Nov 29.

Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Science, Kermanshah, Iran.

Lung tissue is one of the most sensitive organs to ionizing radiation (IR). Early and late side effects of exposure to IR can limit the radiation doses delivered to tumors that are within or adjacent to this organ. Pneumonitis and fibrosis are the main side effects of radiotherapy for this organ. Read More

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http://dx.doi.org/10.15171/apb.2018.078DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6311649PMC
November 2018
3 Reads

Pediatric Residents' and Medical Interns' Awareness about Pediatric Ionizing Radiation Dose from Computed Tomography and Its Associated Risks in Tertiary Hospital in Ethiopia.

Ethiop J Health Sci 2018 Jul;28(4):383-392

Department of Radiology, College of Health Sciences, Addis Ababa University.

Background: The international literature on physicians' knowledge regarding radiation dosages and risks due to computed tomography showed a widespread underestimation of diagnostic radiation doses. Hence, the objective of this work is to assess the awareness of pediatric residents and medical interns about pediatric CT dose and possible risks.

Methods: A cross-sectional study was conducted on May/2016 among year I to year III pediatric residents and 2015/2016 year medical interns attaching Pediatrics Department during the study period in Tikur Anbessa Specialized Referral and Teaching Hospital. Read More

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http://dx.doi.org/10.4314/ejhs.v28i4.4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6308742PMC

The evaluation of vesicoureteral reflux among children using contrast-enhanced ultrasound: a literature review.

J Pediatr Urol 2019 Feb 20;15(1):12-17. Epub 2018 Nov 20.

Department of Radiology, Instituto da Criança, University of São Paulo Medical School, São Paulo, Brazil. Electronic address:

Introduction: Voiding cystourethrogram (VCUG) with fluoroscopy remains the gold standard for detection and evaluation of vesicoureteral reflux (VUR) among children. However, the ionizing radiation exposure remains a concern for this diagnostic modality. Recent studies have proposed using contrast-enhanced ultrasound as an alternative option for VUR screening and follow-up in children. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S14775131183067
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http://dx.doi.org/10.1016/j.jpurol.2018.11.006DOI Listing
February 2019
4 Reads

The 15th Annual Warren K. Sinclair Keynote Address-Jus•ti•fied and Com•men•su•rate.

Health Phys 2019 Feb;116(2):117-125

Clarksburg, MD.

When patients are exposed to ionizing radiation for medical diagnosis or treatment, the procedure being performed should be justified, and the amount of ionizing radiation used should be commensurate with the medical purpose. A legal limit on the amount of ionizing radiation used for medical exposure of a patient does not apply. The biological basis for radiation protection of patients is the same as for all other ionizing radiation exposures: prevent or avoid tissue reactions and reduce the probability of stochastic effects (primarily cancer) while maintaining the benefits to the individual and to society. Read More

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http://dx.doi.org/10.1097/HP.0000000000000988DOI Listing
February 2019
2 Reads

Detection of Relapse by Tumor Markers Versus Imaging in Children and Adolescents With Nongerminomatous Malignant Germ Cell Tumors: A Report From the Children's Oncology Group.

J Clin Oncol 2019 Feb 21;37(5):396-402. Epub 2018 Dec 21.

1 The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.

Purpose: To investigate relapse detection methods among children and adolescents with nongerminomatous malignant germ cell tumors (MGCTs) and to determine whether tumor markers alone might be sufficient for surveillance.

Methods: We retrospectively reviewed all patients enrolled in a phase III, single-arm trial for low-risk and intermediate-risk MGCTs. The method used to detect relapse was assessed based on case report forms, tumor markers, imaging, and pathology reports. Read More

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http://dx.doi.org/10.1200/JCO.18.00790DOI Listing
February 2019
3 Reads

Noncontact recognition of fluorescently labeled objects in deep tissue via a novel optical light beam arrangement.

PLoS One 2018 19;13(12):e0208236. Epub 2018 Dec 19.

Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany.

To date, few optical imaging systems are available in clinical practice to perform noninvasive measurements transcutaneously. Instead, functional imaging is performed using ionizing radiation or intense magnetic fields in most cases. The applicability of fluorescence imaging (e. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0208236PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6300195PMC
December 2018

Dose-dependent Co γ-radiation Effects on Human Endothelial Cell Mechanical Properties.

Cell Biochem Biophys 2018 Dec 18. Epub 2018 Dec 18.

Department of Radiology Technology, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences and Health Services, Tehran, Iran.

Exposure to ionizing radiation is unavoidable for noncancerous cells during the external radiotherapy process. Increasing the dose delivery fraction times leads to increasing the endothelial cell damage. Vascular abnormalities are commonly associated with the alternation of endothelium biomechanical properties. Read More

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http://dx.doi.org/10.1007/s12013-018-0864-3DOI Listing
December 2018

The propagation of active-passive interfaces in bacterial swarms.

Nat Commun 2018 12 18;9(1):5373. Epub 2018 Dec 18.

Department of Mechanical Engineering & Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA.

Propagating interfaces are ubiquitous in nature, underlying instabilities and pattern formation in biology and material science. Physical principles governing interface growth are well understood in passive settings; however, our understanding of interfaces in active systems is still in its infancy. Here, we study the evolution of an active-passive interface using a model active matter system, bacterial swarms. Read More

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http://dx.doi.org/10.1038/s41467-018-07781-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6299137PMC
December 2018
1 Read

Adjuvant MRI-guided percutaneous cryoablation treatment for aneurysmal bone cyst.

Skeletal Radiol 2018 Dec 6. Epub 2018 Dec 6.

Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, 601 North Caroline Street, Baltimore, MD, 21287, USA.

Aneurysmal bone cysts are benign, expansile, lytic bone lesions that behave in a locally aggressive manner. Although radiography and computed tomography (CT) can detect the lesion, magnetic resonance imaging (MRI) is ideal for the demonstration of characteristic fluid-fluid levels, extent, and margins. Treatment typically consists of open surgical curettage with the addition of local adjuvants and bone grafting. Read More

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http://dx.doi.org/10.1007/s00256-018-3115-1DOI Listing
December 2018
8 Reads

Reasons for inadequate or incomplete imaging techniques.

Med Ultrason 2018 Dec;20(4):498-507

Medizinische Klinik 2, Caritas-Krankenhaus Bad Mergentheim, Bad Mergentheim, Germany, Ultrasound Department, First Affiliated Hospital of Zhengzhou University, China.

Even if imaging has developed considerably during the last decades there still exist several factors which limit its capacities. These factors can either limit the usage of a technique or degrade images making them difficult to interpret. Magnetic resonance imaging (MRI) has, as an absolute contraindication, the presence of metallic devices marked as "MRI unsafe" and metallic foreign bodies close to the eye or vital structures. Read More

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http://dx.doi.org/10.11152/mu-1736DOI Listing
December 2018

Low-Dose Computed Tomography for the Optimization of Radiation Dose Exposure in Patients with Crohn's Disease.

Gastroenterol Res Pract 2018 31;2018:1768716. Epub 2018 Oct 31.

Department of Radiology, Cork University Hospital, Cork, Ireland.

Magnetic resonance imaging (MRI) is the mainstay method for the radiological imaging of the small bowel in patients with inflammatory bowel disease without the use of ionizing radiation. There are circumstances where imaging using ionizing radiation is required, particularly in the acute setting. This usually takes the form of computed tomography (CT). Read More

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http://dx.doi.org/10.1155/2018/1768716DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6234436PMC
October 2018
2 Reads

Multimodal PET/MRI Imaging Results Enable Monitoring the Side Effects of Radiation Therapy.

Contrast Media Mol Imaging 2018 1;2018:5906471. Epub 2018 Nov 1.

CROmed Translational Research Centers, H-1047 Budapest, Hungary.

Radiotherapy is one of the most frequently applied treatments in oncology. Tissue-absorbed ionizing radiation damages not only targeted cells but the surrounding cells too. The consequent long-term induced oxidative stress, irreversible tissue damage, or second malignancies draw attention to the urgent need of a follow-up medical method by which personalized treatment could be attained and the actually dose-limiting organ could be monitored in the clinical practice. Read More

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https://www.hindawi.com/journals/cmmi/2018/5906471/
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http://dx.doi.org/10.1155/2018/5906471DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6236670PMC
November 2018
10 Reads

A New and Inclusive Intake Form for Diagnostic Imaging Departments.

J Med Imaging Radiat Sci 2018 Dec 8;49(4):371-375. Epub 2018 Nov 8.

San Diego, California.

Introduction: The gender landscape is changing. For professionals in health care, particularly diagnostic imaging (DI), we need better communication tools to obtain personal information from this gender diverse community. We need more specific information from patients because we are performing examinations in which radiation is involved. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S19398654183022
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http://dx.doi.org/10.1016/j.jmir.2018.10.001DOI Listing
December 2018
2 Reads

THE STRUCTURE OF Hp(0.07) VALUES OBTAINED BY THE NUCLEAR MEDICINE PERSONNEL DURING 18F-FDG PRODUCTION AND INJECTION.

Radiat Prot Dosimetry 2018 Nov 29. Epub 2018 Nov 29.

Department of Medical Imaging Technology, Faculty of Biomedical Sciences and Postgraduate Training, Medical University of Lodz, Lindleya 6, Lodz, Poland.

The production of 18F-FDG is a multi-stage process, which includes not only obtaining the marker and labelling the radiopharmaceutical but also carrying out the quality control of the obtained compound. The staff can be exposed to ionizing radiation at any stage of production. This article presents the results of hands exposure of staff members employed in a facility, where 18F-FDG is produced and injected into patients. Read More

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http://dx.doi.org/10.1093/rpd/ncy203DOI Listing
November 2018

Melatonin and Its Metabolites Ameliorate UVR-Induced Mitochondrial Oxidative Stress in Human MNT-1 Melanoma Cells.

Int J Mol Sci 2018 Nov 28;19(12). Epub 2018 Nov 28.

Department of Dermatology, Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA.

Melatonin (Mel) is the major biologically active molecule secreted by the pineal gland. Mel and its metabolites, 6-hydroxymelatonin (6(OH)Mel) and 5-methoxytryptamine (5-MT), possess a variety of functions, including the scavenging of free radicals and the induction of protective or reparative mechanisms in the cell. Their amphiphilic character allows them to cross cellular membranes and reach subcellular organelles, including the mitochondria. Read More

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http://dx.doi.org/10.3390/ijms19123786DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6320988PMC
November 2018
8 Reads

The Widely Conserved Cluster Is Involved in Precursor Transport to the Periplasm during Scytonemin Synthesis in .

MBio 2018 11 27;9(6). Epub 2018 Nov 27.

School of Life Sciences, Arizona State University, Tempe, Arizona, USA

Scytonemin is a dimeric indole-phenol sunscreen synthesized by some cyanobacteria under conditions of exposure to UVA radiation. While its biosynthetic pathway has been elucidated only partially, comparative genomics reveals that the scytonemin operon often contains a cluster of five highly conserved genes ( cluster) of unknown function that is widespread and conserved among several bacterial and algal phyla. We sought to elucidate the function of the cluster in the cyanobacterium by constructing and analyzing in-frame deletion mutants (one for each gene and one for the entire cluster). Read More

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http://dx.doi.org/10.1128/mBio.02266-18DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6282210PMC
November 2018
1 Read

Ultrasonography of the pediatric spleen: a pictorial essay.

J Ultrasound 2018 Nov 16. Epub 2018 Nov 16.

Paediatric Radiology Department, "Federico II" University Hospital, Naples, Italy.

In infants and children, the spleen is involved in many pathological processes, whether those processes are isolated or related to systemic diseases. Pathology of the pediatric spleen includes congenital anomalies, splenomegaly, trauma, focal lesions, infarction, and tumors. Ultrasonography (US) is a widely available, fast, noninvasive imaging technique to assess the size, shape, and position of the spleen, as well as to define splenic echotexture. Read More

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http://link.springer.com/10.1007/s40477-018-0341-2
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http://dx.doi.org/10.1007/s40477-018-0341-2DOI Listing
November 2018
18 Reads

Doctors' knowledge of the doses and risks of radiological investigations performed in the emergency department.

Saudi Med J 2018 Nov;39(11):1130-1138

Department of Radiology, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. E-mail.

Objectives: To assess emergency doctors' knowledge of radiation exposure doses and risks, and the increasing use of radiological investigations in emergency medicine practice is very concerning because of the associated risks of cancer.

Methods: Doctors from different specialties and with different levels of training working in emergency departments of 8 hospitals in Jeddah, Kingdom of Saudi Arabia, filled out a questionnaire. Participants estimated the radiation doses of different imaging modalities and answered questions regarding possible associated risks. Read More

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http://dx.doi.org/10.15537/smj.2018.11.23091DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6274654PMC
November 2018
10 Reads

Anesthetic considerations for magnetic resonance imaging-guided right-heart catheterization in pediatric patients: A single institution experience.

Paediatr Anaesth 2019 Jan 29;29(1):8-15. Epub 2018 Oct 29.

Department of Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland.

Cardiac catheterization is an integral part of medical management for pediatric patients with congenital heart disease. Owing to age and lack of cooperation in children who need this procedure, general anesthesia is typically required. These patients have increased anesthesia risk secondary to cardiac pathology. Read More

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http://dx.doi.org/10.1111/pan.13512DOI Listing
January 2019
4 Reads

Biological effects of static magnetic field exposure in the context of MR-guided radiotherapy.

Br J Radiol 2019 Feb 31;92(1094):20180484. Epub 2018 Oct 31.

1 Department of Physics, University of Surrey , Guildford , UK.

The clinical introduction of MRI-guided radiotherapy has prompted consideration of the potential impact of the static magnetic field on biological responses to radiation. This review provides an introduction to the mechanisms of biological interaction of radiation and magnetic fields individually, in addition to a description of the magnetic field effects on megavoltage photon beams at the macroscale, microscale and nanoscale arising from the Lorentz force on secondary charged particles. A relatively small number of scientific studies have measured the impact of combined static magnetic fields and ionising radiation on biological endpoints of relevance to radiotherapy. Read More

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https://www.birpublications.org/doi/10.1259/bjr.20180484
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http://dx.doi.org/10.1259/bjr.20180484DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404846PMC
February 2019
14 Reads

Letter by Woodard et al Regarding Article, "Exposure to Low-Dose Ionizing Radiation From Cardiac Procedures and Malignancy Risk in Adults With Congenital Heart Disease".

Circulation 2018 Sep;138(13):1371-1372

Division of Nuclear Medicine, Mallinckrodt Institute of Radiology (H.D.R.), Washington University School of Medicine, St Louis, MO.

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https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.118.0
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http://dx.doi.org/10.1161/CIRCULATIONAHA.118.033523DOI Listing
September 2018
6 Reads

Forensic age diagnostics by magnetic resonance imaging of the proximal humeral epiphysis.

Int J Legal Med 2019 Jan 17;133(1):249-256. Epub 2018 Oct 17.

Edinburgh Unit for Forensic Anthropology, School of History, Classics and Archaeology, University of Edinburgh, 4 Teviot Place, Edinburgh, EH8 9AG, UK.

The most commonly used radiological method for age estimation of living individuals is X-ray. Computed tomography is not commonly used due to high radiation exposure, which raises ethical concerns. This problem can be solved with the use of magnetic resonance imaging (MRI), which avoids the use of ionizing radiation. Read More

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http://link.springer.com/10.1007/s00414-018-1952-z
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http://dx.doi.org/10.1007/s00414-018-1952-zDOI Listing
January 2019
8 Reads
2.714 Impact Factor

Does Exposure to Static Magnetic Fields Generated by Magnetic Resonance Imaging Scanners Raise Safety Problems for Personnel?

J Biomed Phys Eng 2018 Sep 1;8(3):333-336. Epub 2018 Sep 1.

MRI Department, Shahid Faghihi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.

MRI workers are occupationally exposed to static and time-varying gradient magnetic fields. While the 24-hour time-averaged exposure to static magnetic fields is about a few mT, the maximum static field strength can be as high as 500 mT during patient setup. Over the past several years, our laboratory has performed extensive experiments on the health effects of exposure of animal models and humans to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile phone jammers, laptop computers, radars, dentistry cavitrons and MRI. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6169123PMC
September 2018
1 Read

NADPH Oxidase as a Target for Modulation of Radiation Response; Implications to Carcinogenesis and Radiotherapy.

Curr Mol Pharmacol 2019 ;12(1):50-60

Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran.

Background: Radiotherapy is a treatment modality for cancer. For better therapeutic efficiency, it could be used in combination with surgery, chemotherapy or immunotherapy. In addition to its beneficial therapeutic effects, exposure to radiation leads to several toxic effects on normal tissues. Read More

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http://www.eurekaselect.com/166141/article
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http://dx.doi.org/10.2174/1874467211666181010154709DOI Listing
January 2019
9 Reads

Cumulative Radiation Exposures from CT Screening and Surveillance Strategies for von Hippel-Lindau-associated Solid Pancreatic Tumors.

Radiology 2019 Jan 9;290(1):116-124. Epub 2018 Oct 9.

From the Neuroendocrine Tumors Service, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel 52621 (A.T.); Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (A.T.); Division of Cancer Epidemiology and Genetics (N.J., C. Lee, A.B.d.G.), Department of Radiology and Imaging Sciences (L.R.F., J.Y., W.K., A.M.), and Urologic Oncology Branch (C. Leite, W.M.L.), National Cancer Institute, National Institutes of Health, Bethesda, Md; Centre for Research in Epidemiology and Population Health (CESP), INSERM U1018, Villejuif, France (N.J.); and Department of Surgery and Stanford Cancer Institute, Stanford University, Stanford, Calif (E.K.).

Purpose To assess the potential ionizing radiation exposure from CT scans for both screening and surveillance of patients with von Hippel-Lindau (VHL) syndrome. Materials and Methods For this retrospective study, abdomen-pelvic (AP) and chest-abdomen-pelvic (CAP) CT scans were performed with either a three-phase (n = 1242) or a dual-energy virtual noncontrast protocol (VNC; n = 149) in 747 patients with VHL syndrome in the National Institutes of Health Clinical Center between 2009 and 2015 (mean age, 47.6 years ± 14. Read More

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http://dx.doi.org/10.1148/radiol.2018180687DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312431PMC
January 2019
21 Reads

Intraoperative 2D C-arm and 3D O-arm in children: a comparative phantom study.

J Child Orthop 2018 Oct;12(5):550-557

Medical University of Geneva, Geneva, Switzerland.

Purpose: Exposure to ionizing radiation is a concern for children during intraoperative imaging. We aimed to assess the radiation exposure to the paediatric patient with 2D and 3D imaging.

Methods: To evaluate the radiation exposure, patient absorbed doses to the organs were measured in an anthropomorphic phantom representing a five-year-old child, using thermoluminescent dosimeters. Read More

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http://dx.doi.org/10.1302/1863-2548.12.180016DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6169555PMC
October 2018

Ionizing Radiation Dose Exposure to the Ocular Region of Pain Physicians During C-arm Guided Pain Interventions.

Pain Physician 2018 09;21(5):E523-E532

South Infirmary Victoria University Hospital, Cork, Ireland.

Background: The growth of interventional pain medicine in recent years has resulted in more procedures being carried out under fluoroscopic guidance. The proximity of the pain physician (PP) to ionization radiation (IR) potentially increases the risk of radiation exposure to the ocular region. A European directive has reduced the limits of occupational ocular dose 7. Read More

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September 2018
11 Reads

Red, green, and blue fluorescent folate-receptor-targeting carbon dots for cervical cancer cellular and tissue imaging.

Mater Sci Eng C Mater Biol Appl 2018 Dec 30;93:1054-1063. Epub 2018 Aug 30.

National Engineering Research Centre for Nanotechnology, Shanghai 200241, People's Republic of China; School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China. Electronic address:

Folate receptor targeted photo-luminescent quantum carbon dots (Fr-CDs) were successfully prepared from folic acid and phenylenediamine isomers through hydrothermal approaches. Fr-CDs were spherical particles smaller than 10 nm, and emit stable green, blue and red luminescence under ultraviolet region excitation (λex = 365 nm) with maximum emissive lengths at 530, 429, and 612 nm. And the corresponding photoluminescence quantum yield as 15. Read More

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http://dx.doi.org/10.1016/j.msec.2018.08.058DOI Listing
December 2018
1 Read

Minimal invasive surgical technique in midline lumbar inter-body fusion: A technique note.

J Clin Neurosci 2018 Sep 6;55:103-108. Epub 2018 Jul 6.

Department of Neurosurgery, China Medical University Hospital, Taichung, Taiwan.

Midline lumbar inter-body fusion (MIDLF) surgery with cortical bone trajectory (CBT) screw insertion is a modern fusion technique for spinal surgery. The difference in entry point of this trajectory from conventional pedicle screw surgery offers the potential benefits of less soft tissue dissection and reduced blood loss, post-operative wound pain, and infection risks. Because this is a newly developed technique first announced by Santoni in 2009, most surgeons perform this surgery in a mini-open fashion and require more intra-operative fluoroscopy and ionizing radiation exposure during screw placement. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09675868183047
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http://dx.doi.org/10.1016/j.jocn.2018.06.033DOI Listing
September 2018
11 Reads

Radiation Exposure to Staff and Patient During Videofluoroscopic Swallowing Studies and Recommended Protection Strategies.

Dysphagia 2018 Sep 22. Epub 2018 Sep 22.

Monash Imaging, Monash Health, Clayton, VIC, 3168, Australia.

Videofluoroscopic swallowing studies expose both the patients and the staff to ionising radiation. Although the radiation exposure is considered low compared to other diagnostic procedures, it is still prudent to keep the radiation dose as low as reasonably achievable. This review aims to summarise the latest literature pertaining to staff and patient radiation dose, as well as to make evidence-based recommendations on dose optimisation strategies. Read More

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http://link.springer.com/10.1007/s00455-018-9945-0
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http://dx.doi.org/10.1007/s00455-018-9945-0DOI Listing
September 2018
5 Reads

The Value of Computed Tomography Imaging of the Head After Ventriculoperitoneal Shunt Surgery in Adults.

World Neurosurg 2019 Jan 20;121:e159-e164. Epub 2018 Sep 20.

Department of Neurosurgery, University Hospital Frankfurt, Goethe-University Frankfurt, Frankfurt, Germany.

Background: Patients with a ventriculoperitoneal shunt for hydrocephalus often undergo multiple follow-up computed tomography (CT) scans of the head, increasing the risk for long-term effects of ionizing radiation. The purpose of our study was to evaluate the necessity as a routine diagnostic procedure and cost analysis of routine postoperative CT scan of the head after ventriculoperitoneal shunt surgery.

Methods: In this study, we comprised adults with ventriculoperitoneal shunt operations who underwent early CT scans within 48 hours postoperatively. Read More

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http://dx.doi.org/10.1016/j.wneu.2018.09.063DOI Listing
January 2019
2 Reads

Maximizing Benefit and Minimizing Risk in Medical Imaging Use: An Educational Primer for Health Care Professions Students.

J Med Educ Curric Dev 2018 Jan-Dec;5:2382120518798812. Epub 2018 Sep 10.

Department of Radiology, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

"I am not young enough to know everything."Oscar Wilde.

Background: There is insufficient knowledge among providers and patients/caregivers of ionizing radiation exposure from medical imaging examinations. Read More

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http://dx.doi.org/10.1177/2382120518798812DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6131289PMC
September 2018
2 Reads

Radiation Dose Reduction at Pediatric CT: Use of Low Tube Voltage and Iterative Reconstruction.

Radiographics 2018 Sep-Oct;38(5):1421-1440

From the Department of Diagnostic Radiology, Graduate School of Medical Sciences (Y.N., S.O., T.N., D.U., M.K., Y.Y.), and Department of Medical Physics, Faculty of Life Sciences (Y.F.), Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan; and Department of Radiology, Kumamoto City Hospital, Kumamoto, Japan (Y.N., A.T., J.U., M.F.).

Given the growing awareness of and concern for potential carcinogenic effects of exposure of children to ionizing radiation at CT, optimizing acquisition parameters is crucial to achieve diagnostically acceptable image quality at the lowest possible radiation dose. Among currently available dose reduction techniques, recent technical innovations have allowed the implementation of low tube voltage scans and iterative reconstruction (IR) techniques into daily clinical practice for pediatric CT. The benefits of lowering tube voltage include a considerable reduction in radiation dose and improved contrast on images, especially when an iodinated contrast medium is used. Read More

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http://dx.doi.org/10.1148/rg.2018180041DOI Listing
December 2018
3 Reads

Blunt Trauma Abdominal and Pelvic Computed Tomography Has Low Yield for Injuries in More Than One Anatomic Region.

West J Emerg Med 2018 Sep 26;19(5):768-773. Epub 2018 Jul 26.

University of California, San Francisco, Department of Emergency Medicine, San Francisco, California.

Introduction: Most trauma centers order abdominal and pelvic computed tomography (CT) as an automatically paired CT for adult blunt trauma evaluation. However, excessive CT utilization adds risks of excessive exposure to ionizing radiation, the need to work up incidental findings (leading to unnecessary and invasive tests), and greater costs. Examining a cohort of adult blunt trauma patients that received paired abdominal and pelvic (A/P) CT, we sought to determine the diagnostic yield of clinically significant injuries (CSI) in the following: 1) the abdomen alone; 2) the pelvis alone; 3) the lumbosacral spine alone; and 4) more than one of these anatomic regions concomitantly. Read More

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http://dx.doi.org/10.5811/westjem.2018.6.37646DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6123097PMC
September 2018
11 Reads

Pediatric Nasogastric Tube Placement and Verification: Best Practice Recommendations From the NOVEL Project.

Nutr Clin Pract 2018 Dec 6;33(6):921-927. Epub 2018 Sep 6.

Clinical Practice, Quality, and Advocacy, American Society for Parenteral and Enteral Nutrition (ASPEN), Silver Spring, Maryland, USA.

The placement of a nasogastric tube (NGT) in a pediatric patient is a common practice that is generally perceived as a benign bedside procedure. There is potential risk for NGT misplacement with each insertion. A misplaced NGT compromises patient safety, increasing the risk for serious and even fatal complications. Read More

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http://doi.wiley.com/10.1002/ncp.10189
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http://dx.doi.org/10.1002/ncp.10189DOI Listing
December 2018
15 Reads

Monochromatic mammography using scanning multilayer X-ray mirrors.

Authors:
David L Windt

Rev Sci Instrum 2018 Aug;89(8):083702

Reflective X-ray Optics LLC, 425 Riverside Dr., New York, New York 10025, USA.

A prototype system for breast imaging using monochromatic X-rays has been developed using a scanning multilayer X-ray mirror in combination with a conventional mammography tube and an imaging detector. The X-ray mirror produces a monochromatic fan beam tuned near 19 keV, with an energy bandpass of approximately 1.5 keV. Read More

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http://dx.doi.org/10.1063/1.5041799DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6095706PMC
August 2018
9 Reads