3,897 results match your criteria Ionizing Radiation Exposure Medical Imaging


A study to assess the knowledge and practice of medical professionals on radiation protection in interventional radiology.

Indian J Radiol Imaging 2020 Jan-Mar;30(1):64-69. Epub 2020 Mar 30.

Department of Chemistry, Yasouj University, Yasouj, Iran.

Objective: Ionizing radiation has been extensively used in medical procedures throughout the world. Such interventional radiological procedures could result in occupational exposure that needs urgent control. Therefore, MPs (medical professionals) should receive education and appropriate training on occupational radiation protection. Read More

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http://dx.doi.org/10.4103/ijri.IJRI_333_19DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240898PMC

Intracavitary electrocardiography-guided positioning of central vascular access device can spare unnecessary ionizing radiation exposure in pediatric patients.

J Vasc Access 2020 May 26:1129729820923936. Epub 2020 May 26.

Department of Pediatric Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.

Background: Most hospital protocols-including those of our own institute-require the use of radiography to validate tip position in every central vascular access device placement. This study evaluated whether unnecessary ionizing radiation exposure could be spared in the pediatric population when intracavitary electrocardiography is used to guide catheter placement.

Material And Methods: Retrospective study of intracavitary electrocardiography-guided central vascular access device placements in our pediatric surgery department between 2013 and 2018. Read More

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http://dx.doi.org/10.1177/1129729820923936DOI Listing

Usefulness of doppler techniques in the diagnosis of peripheral iatrogenic pseudoaneurysms secondary to minimally invasive interventional and surgical procedures: imaging findings and diagnostic performance study.

J Ultrasound 2020 May 20. Epub 2020 May 20.

Advanced Biomedical Sciences Department, University Federico II of Naples (UNINA), Via S. Pansini 5, 80131, Naples, Italy.

The pseudoaneurysm (PA) is a perfused sac directly connecting with the arterial lumen by an interruption of the vessel wall continuity, more commonly secondary to trauma or iatrogenic causes. Aim of our study was to determine the accuracy and usefulness of Doppler techniques in the diagnosis of peripheral iatrogenic PAs secondary to minimally invasive procedures. From a three year prospective research, 20 Duplex Ultrasound (DUS) studies in as many patients presenting with periarterial pulsating mass clinically suspected for PA secondary to minimally invasive procedures were selected. Read More

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http://dx.doi.org/10.1007/s40477-020-00475-6DOI Listing

Trends in Publicly Reported Quality Measures of Hospital Imaging Efficiency, 2011-2018.

AJR Am J Roentgenol 2020 May 20:1-6. Epub 2020 May 20.

Department of Diagnostic Radiology, Yale University School of Medicine, 20 York St, New Haven, CT 06510.

In 2011, the Centers for Medicare & Medicaid Services (CMS) initiated public reporting of outpatient imaging efficiency measures to reduce potentially inappropriate imaging and unnecessary exposure to ionizing radiation performed in hospital outpatient departments. Three CMS quality measures were designed to reduce duplicative CT in the Medicare population: OP-10, which CMS lists as "Abdomen Computed Tomography-Use of Contrast Material"; OP-11, which CMS lists as "Thorax CT-Use of Contrast Material"; and OP-14, which CMS lists as "Simultaneous Use of Brain CT and Sinus CT." We describe trends in hospital performance on these national hospital outpatient imaging efficiency measures since the inception of their public reporting. Read More

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http://dx.doi.org/10.2214/AJR.19.21993DOI Listing

Reconsider radiation exposure from imaging during immune checkpoint inhibitor trials to reduce risk of secondary cancers in long-term survivors?

Cancer Treat Rev 2020 May 4;87:102027. Epub 2020 May 4.

Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands. Electronic address:

Immune checkpoint inhibitors (ICI) have improved outcomes for patients with advanced cancers, and results in increasing numbers of long-term survivors. For registration studies, progression-free survival and disease-free survival often serve as primary endpoints. This requires repeated computed tomography (CT) scans for tumour imaging which might lead to major radiation exposure. Read More

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http://dx.doi.org/10.1016/j.ctrv.2020.102027DOI Listing

To Use or Not Use Patient Shielding on Pregnant Women Undergoing CT Pulmonary Angiography: A Phantom Study.

Radiat Prot Dosimetry 2020 May 19. Epub 2020 May 19.

Department of Medical Imaging and Physiology, Skåne University Hospital, Malmö SE-205 02, Sweden.

Pregnancy increases the risk of pulmonary embolism. Computed tomography pulmonary angiography (CTPA) is used for diagnosis. CT generates ionising radiation, and thus, abdominal shielding may be used. Read More

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http://dx.doi.org/10.1093/rpd/ncaa059DOI Listing

Exposure to ionising radiation in the clinical workplace: What do medical students know?

Eur J Radiol 2020 Apr 23;128:109029. Epub 2020 Apr 23.

Department of Vascular Surgery, Addenbrooke's Hospital, Hills Rd, Cambridge, CB2 0QQ, UK.

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http://dx.doi.org/10.1016/j.ejrad.2020.109029DOI Listing

Optical imaging versus CT and plain radiography to quantify pectus severity: a systematic review and meta-analysis.

J Thorac Dis 2020 Apr;12(4):1475-1487

Department of Surgery, Division of General Thoracic Surgery, Zuyderland Medical Centre, Heerlen, the Netherlands.

Background: Computed tomography (CT) and two-view chest radiographies are the most commonly used imaging techniques to quantify the severity of pectus excavatum (PE) and pectus carinatum (PC). Both modalities expose patients to ionizing radiation that should ideally be avoided, especially in pediatric patients. In an effort to diminish this exposure, three-dimensional (3D) optical surface imaging has recently been proposed as an alternative method. Read More

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http://dx.doi.org/10.21037/jtd.2020.02.31DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7212142PMC

Additional CTA-Subtraction Technique in Detection of Pulmonary Embolism-a Benefit for Patients or Only an Increase in Dose?

Health Phys 2020 Jul;119(1):148-152

German Federal Armed Forces Central Hospital Koblenz, Department for Radiology and Neuroradiology, Koblenz, Germany.

Latest advantages in computed tomography (CT) come with enhanced diagnostic imaging and also sophisticated dose reduction techniques. However, overall exposure to ionizing radiation of patients in Germany rises slightly, which is mainly based on the growing number of performed CT scans. Furthermore, new possibilities in modern imaging, including 4D scans or perfusion protocols, offer new medical insights but require additional scans. Read More

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http://dx.doi.org/10.1097/HP.0000000000001274DOI Listing

Low-dose X-ray imaging may increase the risk of neurodegenerative diseases.

Med Hypotheses 2020 Apr 13;142:109726. Epub 2020 Apr 13.

2540 Belmont Avenue, Ardmore, PA 19003, United States. Electronic address:

The hypothesis presented here explores the possibility that X-ray imaging commonly used in dental practices may be a shared risk factor for sporadic dementias and motor-neuron diseases. As the evidence will suggest, the brain is ill-equipped to manage the intrusion of low-dose ionizing radiation (IR) beyond that which is naturally occurring. When the brain's antioxidant defenses are overwhelmed by IR, it produces an abundance of reactive oxygen species (ROS) that can lead to oxidative stress, mitochondrial dysfunction, loss of synaptic plasticity, altered neuronal structure and microvascular impairment that have been identified as early signs of neurodegeneration in Alzheimer's disease, Parkinson's, amyotrophic lateral sclerosis, vascular dementia and other diseases that progressively damage the brain and central nervous system. Read More

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http://dx.doi.org/10.1016/j.mehy.2020.109726DOI Listing

Abdominal Imaging in pregnancy (maternal and foetal risks).

Best Pract Res Clin Gastroenterol 2020 Feb - Apr;44-45:101664. Epub 2019 Dec 27.

Faculty of Medicine, Nursing and Health Sciences, Monash University, Director of Gastroenterology, Monash Health, 246 Clayton Rd., Clayton, VIC, 3168, Australia. Electronic address:

Imaging studies are useful in the diagnostic evaluation of inflammatory bowel diseases. However, concern often exists about the safety of imaging for pregnant and lactating women and their infants, leading to unwarranted avoidance of beneficial diagnostic tests or disruption of breastfeeding. Ultrasonography and magnetic resonance imaging (MRI) are not associated with ionizing radiation and are the imaging techniques of choice for pregnant patients. Read More

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http://dx.doi.org/10.1016/j.bpg.2019.101664DOI Listing
December 2019

Point of care and intensive care lung ultrasound: A reference guide for practitioners during COVID-19.

Authors:
S Moore E Gardiner

Radiography (Lond) 2020 Apr 17. Epub 2020 Apr 17.

Glasgow Caledonian University, UK. Electronic address:

Objectives: Current events with the recent COVID-19 outbreak are necessitating steep learning curves for the NHS workforce. Ultrasound, although not used in the diagnosis of COVID-19 may be utilised by practitioners at the point of care (POC) or on the intensive care units (ITUs) where rapid assessment of the lung condition may be required. The aim of this article was to review current literature surrounding the use of lung ultrasound in relation to COVID-19 and provide Sonographers with a quick and digestible reference guide for lung pathologies. Read More

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http://dx.doi.org/10.1016/j.radi.2020.04.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7164867PMC

Rationality of using whole-body computed tomography in trauma patients.

Pol J Radiol 2020 9;85:e132-e136. Epub 2020 Mar 9.

Department of Radiology, Medical Centre for Postgraduate Education, Warsaw, Poland.

Purpose: Identification of the group of patients meeting the criteria of a severe multiple trauma (polytrauma) among those admitted to the regional trauma centre and subjected to whole-body computed tomography (WBCT) due to injuries. Identification the patients for whom WBCT was the optimal choice.

Material And Methods: Retrospective analysis of the data of 303 patients undergoing WBCT in the period 2015-2017 with assessment of the injury severity based on the abbreviated injury scale (AIS) and injury severity score (ISS). Read More

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http://dx.doi.org/10.5114/pjr.2020.93692DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7172222PMC

Investigation and diagnostic imaging of suspected pulmonary embolism during pregnancy and the puerperium: A review of the literature.

J Med Imaging Radiat Oncol 2020 Apr 20. Epub 2020 Apr 20.

Department of Respiratory and Sleep Medicine, The Royal Melbourne Hospital, Melbourne, Victoria, Australia.

Pulmonary embolism (PE) is a leading cause of maternal mortality with women at increased risk of PE during pregnancy and the early postpartum period. Clinical assessment of suspected PE during pregnancy is challenging as signs and symptoms associated with PE overlap with physiological changes of pregnancy. Clinical tests and rules commonly used to assess pre-test probability of PE were historically not well validated in the pregnant population. Read More

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http://dx.doi.org/10.1111/1754-9485.13027DOI Listing

Barriers to CT Dose Optimization: The Challenge of Organizational Change.

Acad Radiol 2020 Apr 8. Epub 2020 Apr 8.

Radiology Outcomes Research Laboratory, Department of Radiology & Biomedical Imaging, University of California, 533 Parnassus Ave. Suite U368E, San Francisco, California 94143. Electronic address:

Background: The use of diagnostic imaging with computed tomography (CT) has risen significantly, increasing cumulative life-time exposure to ionizing radiation for patients and raising concerns about increased cancer risk. Lowering the doses would reduce concerns about associated cancer risks.

Purpose: To determine organizational leaders' perceptions of barriers to optimizing radiation dose in CT. Read More

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http://dx.doi.org/10.1016/j.acra.2020.02.016DOI Listing

Invasive cardiovascular magnetic resonance (iCMR) for diagnostic right and left heart catheterization using an MR-conditional guidewire and passive visualization in congenital heart disease.

J Cardiovasc Magn Reson 2020 Mar 26;22(1):20. Epub 2020 Mar 26.

Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA.

Background: Today's standard of care, in the congenital heart disease (CHD) population, involves performing cardiac catheterization under x-ray fluoroscopy and cardiac magnetic resonance (CMR) imaging separately. The unique ability of CMR to provide real-time functional imaging in multiple views without ionizing radiation exposure has the potential to be a powerful tool for diagnostic and interventional procedures. Limiting fluoroscopic radiation exposure remains a challenge for pediatric interventional cardiologists. Read More

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http://dx.doi.org/10.1186/s12968-020-0605-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7098096PMC

Advances in Diagnostic Imaging in Pediatric Gastroenterology.

Curr Gastroenterol Rep 2020 Mar 19;22(5):22. Epub 2020 Mar 19.

Department of Radiology, Children's National Hospital, Washington, DC, USA.

Purpose Of Review: The purpose is to provide a review of cross-sectional imaging updates in the assessment of gastrointestinal diseases, relevant to clinical practice and research.

Recent Findings: New magnetic resonance imaging contrast agents (Eovist) are taken up by hepatocytes and excreted via the biliary tree. As such, a lesion will retain contrast only if hepatocytes are present, which aids in refining the differential diagnosis. Read More

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http://dx.doi.org/10.1007/s11894-020-00762-6DOI Listing

Quantitative γ-H2AX immunofluorescence method for DNA double-strand break analysis in testis and liver after intravenous administration of InCl.

EJNMMI Res 2020 Mar 19;10(1):22. Epub 2020 Mar 19.

Department of Medical Radiation Physics, Clinical Sciences, Lund University, Lund, Sweden.

Background: It is well known that a severe cell injury after exposure to ionizing radiation is the induction of DNA double-strand breaks (DSBs). After exposure, an early response to DSBs is the phosphorylation of the histone H2AX molecule regions adjacent to the DSBs, referred to as γ-H2AX foci. The γ-H2AX assay after external exposure is a good tool for investigating the link between the absorbed dose and biological effect. Read More

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http://dx.doi.org/10.1186/s13550-020-0604-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7080928PMC

Radiation exposure awareness from patients undergoing nuclear medicine diagnostic 99mTc-MDP bone scans and 2-deoxy-2-(18F) fluoro-D-glucose PET/computed tomography scans.

Nucl Med Commun 2020 Jun;41(6):582-588

The Royal Marsden Hospital NHS Foundation Trust.

Introduction: Medical imaging is on average the largest source of artificial radiation exposure worldwide. This study seeks to understand patient's awareness of radiation exposure derived from nuclear medicine diagnostic scans and assess if current information provided by leaflets is adequate.

Methods: Single-centre cross-sectional questionnaire study applied to bone scan and FDG PET/computed tomography patients, at a nuclear medicine and PET/computed tomography department over a 15-week period in 2018. Read More

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http://dx.doi.org/10.1097/MNM.0000000000001177DOI Listing

Normal palatine tonsil size in healthy children: a sonographic study.

Radiol Med 2020 Mar 12. Epub 2020 Mar 12.

Department of Radiology, Dr. Sami Ulus Training and Research Hospital, 06340, Altındag, Ankara, Turkey.

Objectives: Magnetic resonance imaging (MRI) and computerized tomography (CT) have been widely used to assess palatine tonsils. However, these imaging modalities have some limitations, such as high costs, need for sedation, and exposure to ionizing radiation. Ultrasound has been increasingly used to diagnose tonsillar pathologies. Read More

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http://dx.doi.org/10.1007/s11547-020-01168-0DOI Listing

4D-Dynamic Contrast-Enhanced MRI for Preoperative Localization in Patients with Primary Hyperparathyroidism.

AJNR Am J Neuroradiol 2020 Mar 12;41(3):522-528. Epub 2020 Mar 12.

Radiology (P.P., K.N.), Icahn School of Medicine at Mount Sinai, New York, New York.

Background And Purpose: Our aim was to test the hypothesis that our recently introduced 4D-dynamic contrast-enhanced MR imaging with high spatial and temporal resolution has equivalent accuracy to 4D-CT for preoperative gland localization in primary hyperparathyroidism without requiring exposure to ionizing radiation.

Materials And Methods: Inclusion criteria were the following: 1) confirmed biochemical diagnosis of primary hyperparathyroidism, 2) preoperative 4D-dynamic contrast-enhanced MR imaging, and 3) surgical cure with >50% decrease in serum parathyroid hormone intraoperatively. 4D-dynamic contrast-enhanced studies were reviewed independently by 2 neuroradiologists to identify the side, quadrant, and number of abnormal glands, and compared with surgical and pathologic results. Read More

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http://dx.doi.org/10.3174/ajnr.A6482DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7077889PMC

Increased Postoperative Use of Computed Tomography Following Emergency Surgery for Ileocaecal Crohn Disease.

Surg Laparosc Endosc Percutan Tech 2020 Jun;30(3):214-217

Portsmouth Hospitals NHS Trust.

Introduction: Multiple imaging modalities are often required for the relapsing nature of Crohn disease (CD). Computed tomography (CT) offers a rapid acquisition of images and shows high specificity and sensitivity. However, CT imaging exposes to a higher dose of ionizing radiation than other abdominal imaging modalities. Read More

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http://dx.doi.org/10.1097/SLE.0000000000000778DOI Listing

Zero-Fluoroscopy Ablation at the Texas Heart Institute.

Authors:
David Burkland

Tex Heart Inst J 2020 Feb 1;47(1):53-56. Epub 2020 Feb 1.

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http://dx.doi.org/10.14503/THIJ-19-7057DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046366PMC
February 2020

Comments on "Association of telomere length with chronic exposure to ionizing radiation among inhabitants of natural high background radiation areas of Ramsar, Iran".

Int J Radiat Biol 2020 Jun 17;96(6):707-708. Epub 2020 Mar 17.

Diagnostic Imaging Department, Fox Chase Cancer Center, Philadelphia, PA, USA.

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http://dx.doi.org/10.1080/09553002.2020.1739770DOI Listing
June 2020
1.837 Impact Factor

Point-of-care ultrasound for confirmation of gastrostomy tube replacement in the pediatric emergency department.

Intern Emerg Med 2020 Mar 5. Epub 2020 Mar 5.

Ronald O. Perelman Department of Emergency Medicine, New York University School of Medicine, New York, NY, 10016, USA.

Gastrostomy tubes (G-tubes) are frequently used in children for feeding and nutrition. Complications related to G-tubes (and G-buttons) in children represent a common presentation to the emergency department (ED). G-tube replacement is usually performed by pediatric emergency medicine physicians. Read More

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http://dx.doi.org/10.1007/s11739-020-02294-3DOI Listing

Fifteen-minute consultation: Imaging in paediatric major trauma.

Arch Dis Child Educ Pract Ed 2020 Mar 4. Epub 2020 Mar 4.

RCEMLearning, Royal College of Emergency Medicine, London, UK.

With trauma being a leading cause of death for children, identifying all sustained injuries remains a priority for clinicians, and imaging is a key diagnostic tool to ensure that is achieved. However, children have a greater risk of detrimental effects of ionising radiation than adults. Clinicians therefore have to balance limiting their patients' radiation exposure to 'as low as reasonably achievable' with the need for diagnostic accuracy. Read More

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http://dx.doi.org/10.1136/archdischild-2019-318247DOI Listing

LEVELS OF EXPOSURE TO IONIZING RADIATION AMONG THE PERSONNEL ENGAGED IN CYCLOTRON OPERATION AND THE PERSONNEL ENGAGED IN THE PRODUCTION OF RADIOPHARMACEUTICALS, BASED ON RADIATION MONITORING SYSTEM.

Radiat Prot Dosimetry 2020 Mar 2. Epub 2020 Mar 2.

Department of Medical Physics, Copernicus Memorial Hospital in Lodz Comprehensive Cancer Center and Traumatology, Lodz, Poland.

This paper aims to determine the levels of exposure to neutron and photon radiation among the personnel engaged in cyclotron operation and the personnel engaged in the production of radiopharmaceuticals, with the use of the environmental radiation monitoring system (RMS) installed in the positron emission tomography laboratory. The annual exposures of employees operating the cyclotron measured with the use of the RMS system are: 1.39 ± 0. Read More

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http://dx.doi.org/10.1093/rpd/ncaa012DOI Listing

Patient Radiation Exposure: Imaging During Radiation Oncology Procedures: Executive Summary of NCRP Report No. 184.

J Am Coll Radiol 2020 Feb 24. Epub 2020 Feb 24.

Mayo Clinic, Rochester, Minnesota.

The National Council on Radiation Protection and Measurements (NCRP) recently assessed patient radiation exposure in the United States, which was summarized in its 2019 NCRP Report No. 184. This work involved an estimation of the number of medical procedures using ionizing radiation, as well as the associated effective doses from these procedures. Read More

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http://dx.doi.org/10.1016/j.jacr.2020.02.002DOI Listing
February 2020

Clinical quantitative cardiac imaging for the assessment of myocardial ischaemia.

Nat Rev Cardiol 2020 Feb 24. Epub 2020 Feb 24.

Department of Cellular and Molecular Imaging, Comprehensive Heart Failure Center, Würzburg University Clinics, Würzburg, Germany.

Cardiac imaging has a pivotal role in the prevention, diagnosis and treatment of ischaemic heart disease. SPECT is most commonly used for clinical myocardial perfusion imaging, whereas PET is the clinical reference standard for the quantification of myocardial perfusion. MRI does not involve exposure to ionizing radiation, similar to echocardiography, which can be performed at the bedside. Read More

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http://dx.doi.org/10.1038/s41569-020-0341-8DOI Listing
February 2020

The photo-transferred thermoluminescence phenomenon in case of emergency dose assessment.

Radiat Environ Biophys 2020 May 22;59(2):331-336. Epub 2020 Feb 22.

Faculty of Biomedical Sciences and Postgraduate Training, Department of Medical Imaging Technology, Medical University of Lodz, Lindleya 6, 90-131, Lodz, Poland.

A major disadvantage of dose reconstruction by means of thermoluminescence (TL) is the fact that during readout of any TL material exposed to ionizing radiation (i.e., during measuring the glow curve), the radiation-induced signal gets lost. Read More

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http://dx.doi.org/10.1007/s00411-020-00834-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7165137PMC

Chromosomal aberrations in C-arm fluoroscopy, CT-scan, lithotripsy, and digital radiology staff.

Mutat Res 2020 01 7;849:503131. Epub 2020 Jan 7.

Student Research Committee, Yasuj University of Medical Sciences, Yasuj, Iran.

We have assessed chromosome-type aberrations and micronuclei in the peripheral lymphocytes of personnel working with C-arm fluoroscopy, multi-slice CT-scan, lithotripsy, and digital radiology medical procedures. The study population comprised of 46 exposed workers and 35 controls matched for age, gender, and other confounding factors. Chromosome-type aberrations and micronuclei were analyzed and compared with occupational dosimetry data. Read More

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http://dx.doi.org/10.1016/j.mrgentox.2020.503131DOI Listing
January 2020

DIAGNOSTIC IMAGING AND IONIZING RADIATION EXPOSURE IN A LEVEL 1 TRAUMA CENTRE POPULATION MET WITH TRAUMA TEAM ACTIVATION: A ONE-YEAR PATIENT RECORD AUDIT.

Radiat Prot Dosimetry 2020 Feb 15. Epub 2020 Feb 15.

Department of Clinical Medicine, Faculty of Health Science, UiT-The Arctic University of Norway, Tromsø N-9037, Norway.

This audit describes ionizing and non-ionizing diagnostic imaging at a regional trauma centre. All 144 patients (males 79.2%, median age 31 years) met with trauma team activation from 1 January 2015 to 31 December 2015 were included. Read More

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http://dx.doi.org/10.1093/rpd/ncaa010DOI Listing
February 2020

Ionising radiation exposure from medical imaging - A review of Patient's (un) awareness.

Radiography (Lond) 2020 May 31;26(2):e25-e30. Epub 2019 Oct 31.

The Royal Marsden Hospital NHS Foundation Trust, Sutton, United Kingdom; Institute of Cancer Research, Sutton, United Kingdom.

Introduction: Medical imaging is the main source of artificial radiation exposure. Evidence, however, suggests that patients are poorly informed about radiation exposure when attending diagnostic scans. This review provides an overview of published literature with a focus on nuclear medicine patients on the level of awareness of radiation exposure from diagnostic imaging. Read More

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http://dx.doi.org/10.1016/j.radi.2019.10.002DOI Listing

A multi institutional comparison of imaging dose and technique protocols for neonatal chest radiography.

Radiography (Lond) 2020 May 20;26(2):e66-e72. Epub 2019 Nov 20.

Oslo Metropolitan University (OsloMet), Faculty of Health Sciences, Oslo, Norway; Department of Oncology, Division of Cancer Medicine, Oslo University Hospital, Norway. Electronic address:

Introduction: The focus on paediatric radiation dose reduction supports reevaluation of paediatric imaging protocols. This is particularly important in the neonates where chest radiographs are frequently requested to assess respiratory illness and line placement. This study aims to assess the impact of neonatal chest radiographic protocols on patient dose in four hospitals in different countries. Read More

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http://dx.doi.org/10.1016/j.radi.2019.10.013DOI Listing

Quantification of DNA Double Strand Breaks and Oxidation Response in Children and Adults Undergoing Dental CBCT Scan.

Sci Rep 2020 Feb 7;10(1):2113. Epub 2020 Feb 7.

Belgian Nuclear Research Centre, Radiobiology Unit, SCK•CEN, Mol, Belgium.

Assessing the possible biological effects of exposure to low doses of ionizing radiation (IR) is one of the prime challenges in radiation protection, especially in medical imaging. Today, radiobiological data on cone beam CT (CBCT) related biological effects are scarce. In children and adults, the induction of DNA double strand breaks (DSBs) in buccal mucosa cells and 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxo-dG) and antioxidant capacity in saliva samples after CBCT examination were examined. Read More

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http://dx.doi.org/10.1038/s41598-020-58746-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7005754PMC
February 2020

TiO Nanomaterials Non-Controlled Contamination Could Be Hazardous for Normal Cells Located in the Field of Radiotherapy.

Int J Mol Sci 2020 Jan 31;21(3). Epub 2020 Jan 31.

Commissariat aux Energies Atomique et Alternative, Fundamental Research Division, Jacob Institut, Laboratoire de Cancérologie expérimentale, CEA, F-92265 Fontenay-aux-Roses, France.

Among nanomaterials (NMs), titanium dioxide (TiO) is one of the most manufactured NMs and can be found in many consumers' products such as skin care products, textiles and food (as E171 additive). Moreover, due to its most attractive property, a photoactivation upon non-ionizing UVA radiation, TiO NMs is widely used as a decontaminating agent. Uncontrolled contaminations by TiO NMs during their production (professional exposure) or by using products (consumer exposure) are rather frequent. Read More

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http://dx.doi.org/10.3390/ijms21030940DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7037422PMC
January 2020

The Risk of Cancer from CT Scans and Other Sources of Low-Dose Radiation: A Critical Appraisal of Methodologic Quality.

Prehosp Disaster Med 2020 Feb;35(1):3-16

Medical Physicist, Professor, Diagnostic Imaging, Fox Chase Cancer Center, Philadelphia, PennsylvaniaUSA.

Introduction: Concern exists that radiation exposure from computerized tomography (CT) will cause thousands of malignancies. Other experts share the same perspective regarding the risk from additional sources of low-dose ionizing radiation, such as the releases from Three Mile Island (1979; Pennsylvania USA) and Fukushima (2011; Okuma, Fukushima Prefecture, Japan) nuclear power plant disasters. If this premise is false, the fear of cancer leading patients and physicians to avoid CT scans and disaster responders to initiate forced evacuations is unfounded. Read More

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http://dx.doi.org/10.1017/S1049023X1900520XDOI Listing
February 2020

Is computed tomography cystography indicated in children with pelvic fractures?

Chin J Traumatol 2019 Nov 30. Epub 2019 Nov 30.

The Rappaport School of Medicine, Technion, Haifa, Israel; Trauma Unit, Hillel Yaffe Medical Center, Hadera, Israel.

Purpose: Pelvic fracture evaluation with abdominopelvic computed tomography (CT) and formal CT cystography for rule out of urine bladder injury have been commonly employed in pediatric trauma patients. The additional delayed imaging required to obtain optimal CT cystography is, however, associated with increased doses of ionizing radiation to pelvic organs and represent a significant risk in the pediatric population for future carcinogenic risk. We hypothesized that avoidance of routine CT cystography among pediatric pelvic fracture victims would not result in an appreciable rate of missed bladder injuries and would aid in mitigating the radiation exposure risk associated with these additional images. Read More

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http://dx.doi.org/10.1016/j.cjtee.2019.09.002DOI Listing
November 2019

Evaluating the protective effect of resveratrol, Q10, and alpha-lipoic acid on radiation-induced mice spermatogenesis injury: A histopathological study.

Int J Reprod Biomed (Yazd) 2019 Dec 30;17(12):907-914. Epub 2019 Dec 30.

Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran.

Background: Testis is one of the most sensitive organs against the toxic effect of ionizing radiation. Exposure to even a low dose of radiation during radiotherapy, diagnostic radiology, or a radiological event could pose a threat to spermatogenesis. This may lead to temporary or permanent infertility or even transfer of genomic instability to the next generations. Read More

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http://dx.doi.org/10.18502/ijrm.v17i12.5791DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6943799PMC
December 2019

Nanostructured lipid carriers: A novel hair protective product preventing hair damage and discoloration from UV radiation and thermal treatment.

J Photochem Photobiol B 2020 Mar 30;204:111769. Epub 2019 Dec 30.

Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand; The Center of Excellence for Innovation in Chemistry (PERCH-CIC), Commission on High Education, Ministry of Education, Thailand; The Center of Excellence in Medical Biotechnology, Naresuan University, Phitsanulok, Thailand. Electronic address:

The goal of this study was to investigate the protective effects of nanostructured lipid carriers (NLCs) and vitamin E loaded NLCs (Vit E-NLCs) on preventing hair damages and discoloration against UV radiation and thermal treatment. The NLCs and Vit E-NLCs were prepared using a high-pressure homogenization technique. At optimal conditions, they showed spherical particles with a mean particle size of ~140 nm and a polydispersity index of < 0. Read More

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http://dx.doi.org/10.1016/j.jphotobiol.2019.111769DOI Listing

Assessment of uncertainties associated with Monte Carlo-based personalized dosimetry in clinical CT examinations.

Phys Med Biol 2020 02 12;65(4):045008. Epub 2020 Feb 12.

Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, CH-1211 Geneva 4, Switzerland.

The clinical value of x-ray computed tomography (CT) has skyrocketed in the last decade while at the same time being the main source of medical exposure to the population. Concerns regarding the potential health hazards associated with the use of ionizing radiation were raised and an appropriate estimation of absorbed dose to patients is highly desired. In this work, we aim to validate our developed Monte Carlo CT simulator using in-phantom dose measurements and further assess the impact of personalized scan-related parameters on dosimetric calculations. Read More

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http://dx.doi.org/10.1088/1361-6560/ab6b45DOI Listing
February 2020

Distribution of radiation exposure in patients with partially stable and unstable pelvic ring fractures: first-time use of highly accurate assessment by Monte Carlo calculations.

Eur J Trauma Emerg Surg 2020 Jan 9. Epub 2020 Jan 9.

Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Location VUmc, Amsterdam, The Netherlands.

Purpose: Radiological examinations including X-ray and CT play a critical role in the assessment and treatment of trauma patients. The ionizing radiation used is known to be carcinogenic. However, little is known about the total radiation exposure in trauma patients. Read More

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http://dx.doi.org/10.1007/s00068-019-01297-wDOI Listing
January 2020

Daily localization of partial breast irradiation patients with three-dimensional ultrasound imaging.

Radiat Oncol J 2019 Dec 31;37(4):259-264. Epub 2019 Dec 31.

Department of Radiation Oncology, University of Vermont Medical Center, Burlington, VT, USA.

Purpose: Accurate localization of the lumpectomy cavity during accelerated partial breast radiation (APBR) is essential for daily setup to ensure the prescribed dose encompasses the target and avoids unnecessary irradiation to surrounding normal tissues. Three-dimensional ultrasound (3D-US) allows direct visualization of the lumpectomy cavity without additional radiation exposure. The purpose of this study was to evaluate the feasibility of 3D-US in daily target localization for APBR. Read More

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http://dx.doi.org/10.3857/roj.2019.00052DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6952713PMC
December 2019

Surveillance in Patients With Diffuse Large B Cell Lymphoma.

Mayo Clin Proc 2020 01;95(1):157-163

Division of Oncology/Hematology, University of Nebraska Medical Center, Omaha.

With improvement in the cure rates for diffuse large B cell lymphoma, the question of surveillance imaging in patients who achieve complete remission after the initial therapy has become relevant. Some of the clinical practice guidelines recommend surveillance scanning. However, several studies have reported no benefit in overall survival with scans. Read More

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http://dx.doi.org/10.1016/j.mayocp.2019.05.011DOI Listing
January 2020

Sources of Variability in Pediatric Head Computed Tomography Use Among Emergency Departments in New Jersey.

Pediatr Emerg Care 2020 Jan;36(1):21-25

New Jersey Hospital Association, Princeton, NJ.

Objective: Published guidelines have been developed to limit ionizing radiation exposure in children related to diagnostic computed tomography (CT). This study examines the sources of variability in head CT use in children in emergency departments (EDs) in New Jersey despite the presence of such consensus recommendations.

Methods: The New Jersey Hospital Association (NJHA) Clinical Repository was queried for study data on all patients younger than 18 years discharged from the ED over a 1-year period. Read More

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http://dx.doi.org/10.1097/PEC.0000000000002016DOI Listing
January 2020

Radiological Studies in Very Low Birth Weight and Extremely Low Birth Weight Neonates: 'ALARA' Revisited.

J Trop Pediatr 2019 Dec 31. Epub 2019 Dec 31.

Division of Radiodiagnosis, Department of Medical Imaging and Clinical Oncology, Faculty of Medicine and Health Sciences, Stellenbosch University, Francie Van Zijl Drive, Tygerberg, Cape Town 7505, South Africa.

Background: Very low birth weight (VLBW) and extremely low birth weight (ELBW) neonates are particularly susceptible to the adverse effects of ionizing radiation. There are limited data on radiographic practice among this population in resource-limited environments.

Aim: To estimate cumulative effective dose (ED) from diagnostic imaging in VLBW (1000-1500 g) and ELBW (<1000 g) neonates in a resource-limited setting. Read More

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http://dx.doi.org/10.1093/tropej/fmz080DOI Listing
December 2019

Painless Visible Haematuria in Adults: An Algorithmic Approach Guiding Management.

Cureus 2019 Nov 13;11(11):e6140. Epub 2019 Nov 13.

Urology, University of Western Australia School of Medicine, Perth, AUS.

There is consensus that visible haematuria may be a sign of serious underlying disease, including malignancy, and warrants a thorough diagnostic evaluation. This is usually undertaken by a combination of clinical examination, cystoscopic evaluation, and urinary tract imaging. A decision support tool has been developed in the form of an algorithmic flow chart as part of a suite of on-line evidence-based and consensus-based guidelines Diagnostic Imaging Pathways (DIP): www. Read More

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http://dx.doi.org/10.7759/cureus.6140DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6907722PMC
November 2019

Utilization of contrast-enhanced ultrasound in the evaluation of craniofacial osseous lesions: A case report.

Clin Imaging 2020 Mar 27;60(1):5-9. Epub 2019 Nov 27.

Department of Diagnostic Imaging, National University Hospital, 5 Lower Kent Ridge Rd, 119074, Singapore. Electronic address:

A 14-year-old boy undergoing brain MRI had an incidental avidly enhancing lobulated lesion in the left superolateral orbital rim with associated cortical erosion. Apart from Contrast-enhanced Magnetic Resonance Imaging (MRI), and Computed Tomography (CT), Contrast-Enhanced Ultrasound (CEUS) was obtained prior to a biopsy. It provided additional information about the microvasculature and an orbital biopsy was subsequently performed through an upper eyelid crease incision with minimal blood loss and no postoperative complications. Read More

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http://dx.doi.org/10.1016/j.clinimag.2019.10.018DOI Listing
March 2020
0.596 Impact Factor