227 results match your criteria Acta radiologica open[Journal]


Reproducibility of calcium scoring of the coronary arteries: comparison between different vendors and iterative reconstructions.

Acta Radiol Open 2020 Apr 28;9(4):2058460120922147. Epub 2020 Apr 28.

Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea.

Background: The coronary artery calcium scoring (CCS) has been widely used for cardiac risk stratification for asymptomatic patients.

Purpose: To assess the reproducibility of CCS performed on four different computed tomography (CT) scanners, and compare the variability between two reconstruction algorithms, filtered back projection (FBP), and iterative reconstruction (IR).

Material And Methods: A CCS phantom was made from agar and contained 23 pieces of chicken bones. Read More

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http://dx.doi.org/10.1177/2058460120922147DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7218275PMC

Radiographic scoring systems for psoriatic arthritis are insufficient for psoriatic arthritis mutilans: results from the Nordic PAM Study.

Acta Radiol Open 2020 Apr 27;9(4):2058460120920797. Epub 2020 Apr 27.

Centre for Rheumatology Research, University Hospital and Faculty of Medicine, University of Iceland, Reykjavik, Iceland.

Background: Psoriatic arthritis mutilans (PAM) is the most severe phenotype of psoriatic arthritis (PsA).

Purpose: To describe the radiological features in PAM and explore whether existing scoring systems for radiological damage in psoriatic arthritis are applicable for PAM.

Material And Methods: Radiographs were scored according to the modified Sharp-van der Heijde (mSvdH) and the Psoriatic Arthritis Ratingen Score (PARS) systems for PsA. Read More

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http://dx.doi.org/10.1177/2058460120920797DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7218277PMC

A scoring system based on computed tomography for the correct diagnosis of xanthogranulomatous cholecystitis.

Acta Radiol Open 2020 Apr 15;9(4):2058460120918237. Epub 2020 Apr 15.

Department of Gastroenterological Surgery, Mitsui Memorial Hospital, Tokyo, Japan.

Background: Xanthogranulomatous cholecystitis (XGC) is an uncommon variant of chronic cholecystitis. The differential diagnoses of XGC include gallbladder cancer (GBC), adenomyomatosis, and actinomycosis of the gallbladder.

Purpose: To assess the usefulness of computed tomography (CT) findings in the diagnosis of XGC and differentiation from GBC. Read More

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http://dx.doi.org/10.1177/2058460120918237DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7160779PMC

Usefulness of the advanced monoenergetic image reconstruction in dual-energy computed tomography for detecting the perforator vein of lower extremity varix.

Acta Radiol Open 2020 Apr 15;9(4):2058460120916198. Epub 2020 Apr 15.

Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.

Background: Identification of the perforator vein is important for treating lower extremity varix.

Purpose: We evaluated the ability of 40-keV advanced monoenergetic images to depict the perforator vein in patients with lower extremity varix.

Material And Methods: Thirty-three patients aged 52-86 years were examined with contrast-enhanced dual-energy computed tomography (CT) and advanced virtual monoenergetic images (40 keV) were reconstructed. Read More

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http://dx.doi.org/10.1177/2058460120916198DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7160775PMC

Porto-mesenteric venous gas as a sign of gastric mucosal damage remitted after surgery: a case report.

Acta Radiol Open 2020 Apr 6;9(4):2058460120911586. Epub 2020 Apr 6.

ASL Napoli 2 NORD, Santa Maria delle Grazie, Italy.

Porto-mesenteric venous gas (PMVG) is a severe sign of abdominal organs damage. Imaging diagnostic criteria allow the detection of PMVG and should be applied in the presence of severe symptoms and signs of abdominal organs damage. Our case had clinical signs of epigastric pain and abdominal tenderness and ultrasonography and computed tomography evidence of PMVG and gastric cancer. Read More

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http://dx.doi.org/10.1177/2058460120911586DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7137391PMC

Can iterative reconstruction algorithms replace tube loading compensation in low kVp hepatic CT? Subjective versus objective image quality.

Acta Radiol Open 2020 Mar 16;9(3):2058460120910575. Epub 2020 Mar 16.

Department of Medical Imaging and Physiology, Skåne University Hospital, Lund University, Lund, Sweden.

Background: Hepatic computed tomography (CT) with decreased peak kilovoltage (kVp) may be used to reduce contrast medium doses in patients at risk of contrast-induced acute kidney injury (CI-AKI); however, it increases image noise. To preserve image quality, noise has been controlled by X-ray tube loading (mAs) compensation (TLC), i.e. Read More

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http://dx.doi.org/10.1177/2058460120910575DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7076580PMC

Test-retest repeatability of the apparent diffusion coefficient in sacroiliac joint MRI in patients with axial spondyloarthritis and healthy individuals.

Acta Radiol Open 2020 Mar 13;9(3):2058460120906015. Epub 2020 Mar 13.

Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark.

Background: The apparent diffusion coefficient (ADC) may be used as a biomarker to diagnose axial spondyloarthritis (axSpA) and monitor therapeutic response.

Purpose: To measure the repeatability of the ADC in healthy individuals and in patients with axSpA with and without active sacroiliitis in a test-retest set-up, and to correlate ADC to conventional magnetic resonance imaging (MRI) bone marrow edema (BME) scores and clinical findings.

Material And Methods: A total of 25 patients with axSpA and 24 sex- and age-matched healthy individuals were prospectively examined with MRI twice within 10 days. Read More

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http://dx.doi.org/10.1177/2058460120906015DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7074525PMC

Correlation between fat signal ratio on T1-weighted MRI in the lower vertebral bodies and age, comparing 1.5-T and 3-T scanners.

Acta Radiol Open 2020 Jan 24;9(1):2058460120901517. Epub 2020 Jan 24.

Department of Radiology, Division City and County Hospitals, INSELGROUP, Bern University Hospital, University of Bern, Bern, Switzerland.

Background: The hypothesis was that the fat-dependent T1 signal intensity in vertebral bodies increases with age due to red-yellow marrow conversion.

Purpose: To analyze the increasing fatty conversion of red bone marrow with age.

Material And Methods: A continuous sample of 524 patients (age range 2-96 years) with normal lumbar spine MRIs (T11-L5) was retrospectively selected in order to get a representative sample from our 1. Read More

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http://dx.doi.org/10.1177/2058460120901517DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7055425PMC
January 2020

Two pediatric cases of epidural hematoma in the posterior fossa with extension along the sigmoid sinus groove: MR evaluation.

Acta Radiol Open 2020 Feb 3;9(2):2058460120902894. Epub 2020 Feb 3.

Department of Radiology, Teikyo University School of Medicine, Tokyo, Japan.

To discuss the computed tomography (CT) and magnetic resonance (MR) findings of posterior fossa epidural hematoma (PFEDH) mimicking sinus thrombosis, we present two pediatric cases with the PFEDH extending along the sigmoid sinus groove evaluated by MR imaging (MRI) and MR venography (MRV). T2-weighted coronal MRI can diagnose both patency of the sigmoid sinus and epidural hematoma extending along the sinus groove. Phase-contrast MRV (PC-MRV) is also useful to evaluate the flow state in the dural sinuses but it should be diagnosed carefully whether low visualization of the dural sinus means only functional flow impairment or organized occlusion due to thrombus. Read More

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http://dx.doi.org/10.1177/2058460120902894DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6997969PMC
February 2020

Short tau inversion recovery MRI of Modic changes: a reliability study.

Acta Radiol Open 2020 Jan 29;9(1):2058460120902402. Epub 2020 Jan 29.

Department of Radiology, Haukeland University Hospital, Bergen, Norway.

Background: Limited reliability data exist for evaluation of spinal edema changes on magnetic resonance imaging (MRI) with short tau inversion recovery (STIR) sequences.

Purpose: To assess the inter-observer reliability for evaluation of STIR signal increase related to Modic changes (MCs) on MRI of the lumbar spine.

Material And Methods: We prospectively included 120 patients imaged to confirm their eligibility for the AIM (Antibiotics In Modic changes) trial. Read More

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http://dx.doi.org/10.1177/2058460120902402DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6990614PMC
January 2020

A new brain CT reference line: the lower eyelid to the inner occipital base line closely parallels the Talairach-Tournoux line.

Acta Radiol Open 2020 Jan 27;9(1):2058460120902406. Epub 2020 Jan 27.

Department of Diagnostic Radiology and Nuclear Medicine, Graduate School of Medicine, Gunma University, Gunma, Japan.

Background: There is no standardized brain computed tomography (CT) reference line that can be determined on both scout and reformatted sagittal CT images. Here, a tangential line from the anterior edge of the lower eyelid to the inner table of the occipital base (LEL/O line) appears nearly parallel to the Talairach-Tournoux (T/T) line, which shows a consistent intracranial anatomical relationship among subjects, and acts as a standard reference line for magnetic resonance (MR) imaging.

Purpose: To quantitatively validate the LEL/O line as a new standard brain CT reference line. Read More

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http://dx.doi.org/10.1177/2058460120902406DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6985971PMC
January 2020

Letter to the Editor: Usefulness of contrast-enhanced ultrasound--Intrapancreatic accessory spleen mimicking malignant tumor.

Acta Radiol Open 2020 Jan 24;9(1):2058460119892412. Epub 2020 Jan 24.

Department of Surgery, IMS Fujimi General Hospital, Saitama, Japan.

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http://dx.doi.org/10.1177/2058460119892412DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6984429PMC
January 2020

CT imaging of the Eustachian tube using focal contrast medium administration: a feasibility study in humans.

Acta Radiol Open 2020 Jan 22;9(1):2058460119900435. Epub 2020 Jan 22.

Division of Radiology and Nuclear Medicine, Rikshospitalet, Oslo University Hospital, Oslo, Norway.

Several methods of imaging the Eustachian tube have been tested in the last century, although neither has led to an established method. The introduction of balloon Eustachian tuboplasty (BET) has revived the request for Eustachian tube (ET) visualization in patients with chronic Eustachian tube dysfunction. Many institutions perform preoperative computed tomography (CT) scans of the temporal bone and epipharynx before BET. Read More

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http://dx.doi.org/10.1177/2058460119900435DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6977099PMC
January 2020

Early perfusion changes in multiple sclerosis patients as assessed by MRI using arterial spin labeling.

Acta Radiol Open 2019 Dec 30;8(12):2058460119894214. Epub 2019 Dec 30.

Department of Radiology, Hospital Universitario Quironsalud, Madrid, Spain.

Background: Gadolinium-perfusion magnetic resonance (MR) identifies gray matter abnormalities in early multiple sclerosis (MS), even in the absence of structural differences. These perfusion changes could be related to the cognitive disability of these patients, especially in the working memory. Arterial spin labeling (ASL) is a relatively recent perfusion technique that does not require intravenous contrast, making the technique especially attractive for clinical research. Read More

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http://dx.doi.org/10.1177/2058460119894214DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6964247PMC
December 2019

Radiological findings in anastomotic leakage after anterior resection may predict a permanent stoma.

Acta Radiol Open 2020 Jan 6;9(1):2058460119897358. Epub 2020 Jan 6.

Department of Surgery, Lund University, Skåne University Hospital, Malmö, Sweden.

Background: Permanent stoma (PS) is common following treatment of anastomotic leakage (AL) after anterior resection (AR) and ways of predicting successful treatment outcome are missing.

Purpose: To explore radiological variables in rectal contrast studies in their relation to end-result of PS following treatment for AL after AR.

Material And Methods: The Swedish Cancer Registry (SCRCR) was explored for AL cases after AR for rectal cancer in patients operated in the region of Skåne from 1 January 2001 to 31 December 2011. Read More

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http://dx.doi.org/10.1177/2058460119897358DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945454PMC
January 2020

Tumor and nodal staging of colon cancer: accuracy of preoperative computed tomography at a Swedish high-volume center.

Acta Radiol Open 2019 Dec 30;8(12):2058460119888713. Epub 2019 Dec 30.

Department of Clinical Sciences Malmö, Lund University, Sweden.

Background: When deciding treatment options for patients with colon cancer, accurate staging is required. In Sweden, the main preoperative evaluation modality to determine tumor and nodal stage is computed tomography (CT).

Purpose: The aim of this study was to investigate how well the preoperative (CT-determined) clinical tumor and nodal stage (cTN) correlated with the postoperative histopathological stage (pTN). Read More

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http://dx.doi.org/10.1177/2058460119888713DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6939391PMC
December 2019

Imaging of penetrating thoracic trauma in a large Nordic trauma center.

Acta Radiol Open 2019 Dec 20;8(12):2058460119895485. Epub 2019 Dec 20.

Department of Clinical Science, Intervention and Technology (CLINTEC), Division for Radiology, Karolinska University Hospital and Karolinska Institute, Stockholm, Sweden.

Background: Penetrating trauma is rarely encountered in Nordic trauma centers, yet the incidence is increasing. Typical imaging findings in penetrating trauma should thus be familiar to all radiologists.

Purpose: To evaluate incidence and imaging findings of penetrating chest trauma, gunshot wound (GSW) and stab wound (SW) injury spectrum, imaging protocols, and outcome in a large trauma center. Read More

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http://dx.doi.org/10.1177/2058460119895485DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926989PMC
December 2019

MRI depiction of fetal brain abnormalities.

Acta Radiol Open 2019 Dec 20;8(12):2058460119894987. Epub 2019 Dec 20.

Department of Medical Imaging, Phoenix Children's Hospital, Phoenix, AZ, USA.

Intracranial abnormalities are commonly suspected findings on antenatal ultrasound that require evaluation by magnetic resonance imaging. This review depicts multiple abnormalities imaged as a means to guide clinicians in proper diagnosis. Read More

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http://dx.doi.org/10.1177/2058460119894987DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6927204PMC
December 2019

Femoral osteochondroma responsible for ischiofemoral impingement, bursitis, and secondary lipoma arborescens mimicking malignant transformation.

Acta Radiol Open 2019 Dec 11;8(12):2058460119892409. Epub 2019 Dec 11.

Department of Radiology, Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCLouvain), Brussels, Belgium.

We present the case of a 53-year-old woman with a known history of hereditary multiple exostosis disease referred for further imaging work-up after ultrasound and computed tomography leading to the suspicion of malignant transformation of an osteochondroma (exostosis) located on the posteromedial aspect of the right proximal femur. Imaging examinations suggested an ischiofemoral impingement resulting in a secondary bursitis associated with the development of an internal lipoma arborescens. This rare association explained the complexity of the diagnosis. Read More

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http://dx.doi.org/10.1177/2058460119892409DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6923803PMC
December 2019

Seipin-linked congenital generalized lipodystrophy type 2: a rare case with multiple lytic and pseudo-osteopoikilosis lesions.

Acta Radiol Open 2019 Dec 11;8(12):2058460119892407. Epub 2019 Dec 11.

Department of Orthopedic Surgery, Teikyo University School of Medicine, Tokyo, Japan.

Congenital generalized lipodystrophy (CGL), or Berardinelli-Seip syndrome (BSCL), is a part of lipodystrophic syndromes that constitute a heterogeneous group of genetic or acquired generalized or partial body fat loss disorders. It is a rare autosomal recessive disease characterized by a near-absence of adipose tissue from birth or early infancy and severe insulin resistance. CGL is classified as type 1-4, depending on the gene involved, and bone lytic lesion is found frequently in type 1 especially in long bones, but reported to be rare in type 2. Read More

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http://dx.doi.org/10.1177/2058460119892407DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6906354PMC
December 2019

Canal of Nuck hernias.

Acta Radiol Open 2019 Dec 9;8(12):2058460119889867. Epub 2019 Dec 9.

Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.

The canal of Nuck, caused by the failed closure of the processus vaginalis in the female, is the continued outpouching of parietal peritoneum through the inguinal canal to the labia majora. Disorders of the canal of Nuck include hernia and hydrocele. Some canal of Nuck hernias, especially of the ovary, may result in emergent complications such as incarceration, strangulation, and ovarian torsion. Read More

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http://dx.doi.org/10.1177/2058460119889867DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6902399PMC
December 2019

The future of breast cancer screening: what do participants in a breast cancer screening program think about automation using artificial intelligence?

Acta Radiol Open 2019 Dec 4;8(12):2058460119880315. Epub 2019 Dec 4.

Department of Functional Imaging, Karolinska University Hospital, Stockholm, Sweden.

Background: If screening participants do not trust computerized decision-making, screening participation may be affected by the introduction of such methods.

Purpose: To survey breast cancer screening participants' attitudes towards potential future uses of computerization.

Material And Methods: A survey was constructed. Read More

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http://dx.doi.org/10.1177/2058460119880315DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901736PMC
December 2019

Mobile learning device increased study efficiency for radiology residents but with risk of temporary novelty effect.

Acta Radiol Open 2019 Nov 2;8(11):2058460119889871. Epub 2019 Dec 2.

Department of Radiology, Linköping University, Linköping, Sweden.

Background: Digital resources in learning are increasingly available and offer new possibilities in education. Mobile learning devices (MLD) such as tablets provide easy and flexible access for users.

Purpose: To investigate whether the introduction of MLDs in radiology education affected time spent on studies over a longer time frame and whether learning behavior and attitudes changed. Read More

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http://dx.doi.org/10.1177/2058460119889871DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6887819PMC
November 2019

Perception of Artificial Intelligence (AI) among radiologists.

Authors:
Emre Pakdemirli

Acta Radiol Open 2019 Sep 30;8(9):2058460119878662. Epub 2019 Sep 30.

Department of Radiology, St. Albans City Hospital, St. Albans, UK.

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http://dx.doi.org/10.1177/2058460119878662DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6769222PMC
September 2019

Association between risk factors and testicular microlithiasis.

Acta Radiol Open 2019 Sep 10;8(9):2058460119870297. Epub 2019 Sep 10.

Research Unit for General Practice, Department of Public Health, Aarhus University, Aarhus, Denmark.

Background: Testicular microlithiasis and its clinical significance are not fully understood. Testicular microlithiasis and risk factors have been associated with testicular cancer. The role of testicular microlithiasis is investigated. Read More

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http://dx.doi.org/10.1177/2058460119870297DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6740053PMC
September 2019
1 Read

Gender, letters, relatives, and God: mediating actors in mammographic screening among Pakistani women in Norway.

Acta Radiol Open 2019 Sep 11;8(9):2058460119875015. Epub 2019 Sep 11.

Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.

Background: Pakistani immigrant women in Norway have lower attendance rates in the national breast cancer screening program (BreastScreen Norway) compared to non-immigrants and immigrants from most other countries.

Purpose: To identify and explore human and non-human actors that play a role for Pakistani immigrant women's attendance in the program.

Material And Methods: Qualitative interviews with 16 Norwegian-Pakistani women in 2017 and 2018. Read More

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http://dx.doi.org/10.1177/2058460119875015DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743200PMC
September 2019
2 Reads

Endovascular treatment of extradural internal carotid artery aneurysm with a flow diverter stent.

Acta Radiol Open 2019 Sep 2;8(9):2058460119872404. Epub 2019 Sep 2.

Department of Vascular Surgery, Turku University Hospital, Finland.

Extradural internal carotid artery aneurysms are rare and the indications for treatment are not well defined. We report successful management of two high extradural internal carotid artery aneurysms treated with flow diverter stents. The endovascular repair of extradural internal carotid artery aneurysms is effective because with surgical treatment there is always the possibility of cranial nerve injury. Read More

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http://dx.doi.org/10.1177/2058460119872404DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6724490PMC
September 2019

Comparison of bi- and multiparametric magnetic resonance imaging to select men for active surveillance.

Acta Radiol Open 2019 Aug 31;8(8):2058460119866352. Epub 2019 Jul 31.

Department of Radiology, Herlev Gentofte University Hospital, Herlev, Denmark.

Background: Active surveillance of men with prostate cancer relies on accurate risk assessments because it aims to avoid or delay invasive therapies and reduce overtreatment.

Purpose: To compare the diagnostic performance of pre-biopsy biparametric magnetic resonance imaging (MRI) with confirmatory multiparametric MRI in selecting men for active surveillance.

Material And Methods: The study population included biopsy-naïve men with clinical suspicion of prostate cancer undergoing biparametric MRI followed by combined (standard plus MRI targeted) biopsies. Read More

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http://dx.doi.org/10.1177/2058460119866352DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6669856PMC
August 2019
1 Read

Diagnostic imaging trends in the emergency department: an extensive single-center experience.

Acta Radiol Open 2019 Jul 31;8(7):2058460119860404. Epub 2019 Jul 31.

Department of Radiology, Landspitali University Hospital, Reykjavik, Iceland.

Background: Emergency Department imaging volume has increased significantly in North America and Asia.

Purpose: To assess Emergency Department imaging trends in a European center.

Material And Methods: The institutional radiological information system was queried for all computed tomography (CT), ultrasound (US), and magnetic resonance (MR) studies performed for the Emergency Department during 2002-2017. Read More

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http://dx.doi.org/10.1177/2058460119860404DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6669846PMC

Invasive ductal carcinoma detected within a fibroadenolipoma through digital breast tomosynthesis.

Acta Radiol Open 2019 Jul 25;8(7):2058460119865905. Epub 2019 Jul 25.

Kantonsspital Baden AG, Institute of Radiology, Baden, Switzerland.

A 52-year-old patient referred to our hospital for a screening mammogram showed a suspicious new architectural distortion. Previously, a fibroadenolipoma within the right breast was diagnosed clinically and radiologically. Further work-up with tomosynthesis, magnetic resonance imaging, and magnetic resonance-guided biopsy showed an invasive ductal carcinoma within the fibroadenolipoma, which are usually benign breast lesions not associated with malignancy. Read More

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http://dx.doi.org/10.1177/2058460119865905DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6659190PMC

Multimodality depiction of findings in branchio-oto-renal syndrome: two case reports.

Acta Radiol Open 2019 Jul 26;8(7):2058460119861606. Epub 2019 Jul 26.

Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.

Branchio-oto-renal syndrome is a rare genetic disorder that affects multiple organ systems. Temporal bone abnormalities include the unwound appearance of the cochlea which is common in this syndrome. This appearance can prompt renal imaging and evaluation. Read More

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http://dx.doi.org/10.1177/2058460119861606DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6661797PMC

Time-resolved dynamic computed tomography venography (CTV) of the lower limbs - using ultra-low dosage of contrast media: a case report.

Acta Radiol Open 2019 Jul 19;8(7):2058460119863987. Epub 2019 Jul 19.

Department of Radiology, Karolinska University Hospital, Stockholm, Sweden.

Deep vein thrombosis affects approximately 1-2 per 1000 individuals each year. We present an alternative imaging option for detecting deep vein thrombosis in the lower legs using time-resolved dynamic computed tomography venography with ultra-low contrast medium dosage. Read More

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http://dx.doi.org/10.1177/2058460119863987DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6643186PMC
July 2019
1 Read

Evaluation of a new e-learning framework for teaching nuclear medicine and radiology to undergraduate medical students.

Acta Radiol Open 2019 Jul 18;8(7):2058460119860231. Epub 2019 Jul 18.

Nuclear Medicine/PET Centre, Department of Radiology, Haukeland University Hospital, Bergen, Norway.

Background: Radiology and nuclear medicine have traditionally been taught in a series of lectures and seminars concluded by an examination testing knowledge rather than skills.

Purpose: To emphasize skills in the students' learning process, we developed and evaluated a new e-learning framework for teaching medical imaging.

Material And Methods: The framework consists of electronic lectures, a learning management system (LMS), and a diagnostic viewing system. Read More

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http://dx.doi.org/10.1177/2058460119860231DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640061PMC

A preliminary glossary of artificial intelligence in radiology.

Authors:
Emre Pakdemirli

Acta Radiol Open 2019 Jul 15;8(7):2058460119863379. Epub 2019 Jul 15.

West Hertfordshire NHS Trust, St. Albans City Hospital, St Albans, UK.

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http://dx.doi.org/10.1177/2058460119863379DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6630070PMC

Teleradiology in the UK: friend or foe? A radiologist's perspective.

Authors:
Emre Pakdemirli

Acta Radiol Open 2019 Jul 15;8(7):2058460119861313. Epub 2019 Jul 15.

Department of Radiology, St Albans City Hospital, St Albans, UK.

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http://dx.doi.org/10.1177/2058460119861313DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6630073PMC

Mammographic architectural distortion caused by cyst aspiration.

Acta Radiol Open 2019 Jun 28;8(6):2058460119859353. Epub 2019 Jun 28.

St. Joseph Hospital, Center of Breast Imaging and Diagnosis, Orange, CA, USA.

Improvement in breast cancer screening technology has increased the detection of architectural distortion, which can often indicate underlying malignancy; however, there are also many benign causes of architectural distortion. We present a case of architectural distortion caused by cyst aspiration, representing a novel, benign cause. Read More

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http://dx.doi.org/10.1177/2058460119859353DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6600497PMC
June 2019
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Intrapancreatic accessory spleen mimicking malignant tumor: three case reports.

Acta Radiol Open 2019 Jun 28;8(6):2058460119859347. Epub 2019 Jun 28.

Department of Pathology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.

Intrapancreatic hypervascular lesions may represent metastases, neuroendocrine tumors, or intrapancreatic accessory spleens. The benign intrapancreatic accessory spleen can be difficult to separate from a malignant neuroendocrine tumor or metastasis. We report three cases of pancreatic lesions that underwent pancreatic surgery due to suspicion of malignancy on imaging; all cases were histologically intrapancreatic accessory spleens. Read More

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http://dx.doi.org/10.1177/2058460119859347DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6600498PMC

Iterative CT reconstruction in abdominal low-dose CT used for hybrid SPECT-CT applications: effect on image quality, image noise, detectability, and reader's confidence.

Acta Radiol Open 2019 Jun 20;8(6):2058460119856266. Epub 2019 Jun 20.

Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany.

Background: Iterative computed tomography (CT) image reconstruction shows high potential for the preservation of image quality in diagnostic CT while reducing patients' exposure; it has become available for low-dose CT (LD-CT) in high-end hybrid imaging systems (e.g. single-photon emission computed tomography [SPECT]-CT). Read More

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http://dx.doi.org/10.1177/2058460119856266DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6587393PMC
June 2019
2 Reads

Urachal abscess mimicking malignant tumor: can imaging tell them apart?

Acta Radiol Open 2019 Jun 21;8(6):2058460119852923. Epub 2019 Jun 21.

Department of Radiology, Hospital de Santa Maria, Lisbon, Portugal.

The urachus is an embryonic remnant that usually involutes before birth. Abnormal persistence of this structure can lead to infectious or neoplastic complications later in life. We report a case of an 84-year-old man that presented with a urachal complex mass which, after proper investigation, revealed to be a urachal abscess. Read More

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http://dx.doi.org/10.1177/2058460119852923DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6589978PMC
June 2019
2 Reads

Intra- and inter-rater reliability in a comparative study of cross-sectional and spiral computed tomography pelvimetry methods.

Acta Radiol Open 2019 Jun 11;8(6):2058460119855187. Epub 2019 Jun 11.

Department of Medical Imaging and Physiology, Skåne University Hospital, Malmö, Sweden.

Background: Different low-dose computed tomography (CT) pelvimetry methods can be used to evaluate the size of birth canal before delivery. CT pelvimetry might generate an acceptable low fetal radiation dose but its measurement accuracy is unknown.

Purpose: To investigate intra- and inter-rater measurement reliability of cross-sectional and two spiral CT pelvimetry methods: standard spiral and short spiral. Read More

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http://dx.doi.org/10.1177/2058460119855187DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560807PMC
June 2019
9 Reads

A case of a newborn with an intrahepatic congenital portosystemic venous shunt with concurrent congenital duodenal web.

Acta Radiol Open 2019 Jun 12;8(6):2058460119854173. Epub 2019 Jun 12.

Izola General Hospital, Izola, Slovenia.

Intrahepatic congenital portosystemic venous shunts are rare vascular anomalies. We report a unique case of a neonate with an intrahepatic congenital portosystemic venous shunt with concurrent congenital duodenal web. Such association has not been previously reported to our knowledge. Read More

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http://dx.doi.org/10.1177/2058460119854173DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6563404PMC
June 2019
6 Reads

Correlation between subcutaneous fat measurements in knee MRI and BMI: relationship to obesity and related co-morbidities.

Acta Radiol Open 2019 Jun 11;8(6):2058460119853541. Epub 2019 Jun 11.

Department of Radiology and Imaging Sciences, Emory University Hospital, Atlanta, GA, USA.

Background: Obesity is a major public health disorder associated with multiple co-morbidities. Knee magnetic resonance imaging (MRI) permits visualization of the subcutaneous fat anatomy, which can be correlated to body mass index (BMI) and obesity-related co-morbidities.

Purpose: This study intends to validate a method of correlating measurements of subcutaneous fat around the distal femur on axial MR images to BMI and obesity-related co-morbidities. Read More

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http://dx.doi.org/10.1177/2058460119853541DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560802PMC
June 2019
12 Reads

Prostatic artery embolization (PAE) for prostatic origin bleeding in the context of prostate malignancy.

Acta Radiol Open 2019 Jun 12;8(6):2058460119846061. Epub 2019 Jun 12.

Department of Radiology, Churchill Hospital, Headington, Oxford, UK.

Prostate artery embolization (PAE) has been shown to be beneficial in treating men with benign prostatic hypertrophy (BPH). Here we describe treating four patients with prostate cancer (two with organ-confined and two with metastatic prostate cancer) with prostatic bleeding with PAE. Patients had other causes of hematuria excluded and were followed up at 3, 12, and 18 months after PAE. Read More

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http://dx.doi.org/10.1177/2058460119846061DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6563405PMC
June 2019
2 Reads

Solitary round pulmonary lesions in the pediatric population: a pictorial review.

Acta Radiol Open 2019 May 31;8(5):2058460119851998. Epub 2019 May 31.

Second Department of Radiology, University General Hospital of Athens "Attikon," Medical School, National and Kapodistrian University of Athens, Athens, Greece.

The purpose of this current pictorial review is to define the solitary round pulmonary lesion (SRPL), to familiarize with its prevalence in the pediatric population, and, moreover, to educate radiologists on its vast differential diagnosis and imaging manifestations. Furthermore, by highlighting valuable clues, it intends to assist radiologists efficiently partake in its diagnosis, work-up, and follow-up in order to narrow down the differential diagnosis by working alongside the clinician and combining clinical information, lab results, and radiological findings. Read More

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http://dx.doi.org/10.1177/2058460119851998DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6545655PMC
May 2019
2 Reads

Endovascular aortic repair reduces gluteal oxygenation.

Acta Radiol Open 2019 May 20;8(5):2058460119850115. Epub 2019 May 20.

University of Copenhagen, Copenhagen, Denmark.

Background: Provoked gluteal claudication is a known risk after endovascular aortic repair (EVAR). Lowered gluteal muscle oxygenation (SO) may be demonstrated by near-infrared spectroscopy (NIRS).

Purpose: To evaluate NIRS-determined SO in EVAR patients. Read More

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http://dx.doi.org/10.1177/2058460119850115DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6535910PMC
May 2019
8 Reads

T1a renal cell carcinoma on unenhanced CT: analysis of detectability and imaging features.

Acta Radiol Open 2019 May 13;8(5):2058460119849706. Epub 2019 May 13.

Department of Radiology, Shimane University Faculty of Medicine, Izumo, Japan.

Background: Increasing use of unenhanced computed tomography (CT) has been associated with the increasing incidental detection of renal cell carcinoma (RCC) at an earlier stage.

Purpose: To evaluate the characteristics in detecting and differentiating T1a RCCs on unenhanced CT.

Material And Methods: We retrospectively reviewed 68 patients with 68 T1a RCCs and 39 benign regions. Read More

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http://dx.doi.org/10.1177/2058460119849706DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6535905PMC
May 2019
3 Reads

Polypoid gallbladder tumors with a deep hypoechoic area and a conically thickened outermost hyperechoic layer suggest shallow T2 carcinoma.

Acta Radiol Open 2019 May 16;8(5):2058460119847995. Epub 2019 May 16.

Department of Pathology, Nikko Medical Center, Dokkyo Medical University, Tochigi, Japan.

Background: Ultrasound findings of shallow T2 gallbladder carcinoma (GBC) with a favorable prognosis are not known.

Purpose: To confirm the criteria for ultrasound diagnosis of shallow T2 GBC.

Material And Methods: A detailed analysis of ultrasound and pathological correlation was conducted in two patients with pT1 GBC and seven with shallow pT2 GBC (subserosal-invasion depth ≤ 2 mm) at our institution from January 1988 to December 2017. Read More

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http://dx.doi.org/10.1177/2058460119847995DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6535911PMC
May 2019
9 Reads

Intravoxel incoherent motion perfusion in patients with Moyamoya disease: comparison with O-gas positron emission tomography.

Acta Radiol Open 2019 May 23;8(5):2058460119846587. Epub 2019 May 23.

Department of Neurosurgery, Tokyo Medical and Dental University, Tokyo, Japan.

Background: Intravoxel incoherent motion magnetic resonance imaging (IVIM) enables non-invasive measurement of brain perfusion.

Purpose: To investigate whether IVIM could be used to evaluate the hemodynamic disturbance of Moyamoya disease (MMD) by comparison with the gold-standard O-gas positron emission tomography (PET) method.

Material And Methods: Ten consecutive patients with MMD (six women; mean age = 42. Read More

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http://dx.doi.org/10.1177/2058460119846587DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6535913PMC
May 2019
18 Reads

Acoustic radiation force impulse (ARFI) shear wave elastography of the bowel wall in healthy volunteers and in ulcerative colitis.

Acta Radiol Open 2019 Apr 17;8(4):2058460119840969. Epub 2019 Apr 17.

Department of Internal Medicine 1, Friedrich-Alexander-University Erlangen-Nurnberg, Erlangen, Germany.

Background: Acoustic radiation force impulse (ARFI) elastography is a non-invasive, ultrasound-based approach of evaluation of tissue elasticity. It has not yet been systematically applied to the bowel wall.

Purpose: To perform ARFI elastography of the bowel wall in healthy volunteers and patients with ulcerative colitis (UC). Read More

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http://dx.doi.org/10.1177/2058460119840969DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6472171PMC
April 2019
2 Reads

Intramural duodenal hematoma: clinical course and imaging findings.

Acta Radiol Open 2019 Apr 8;8(4):2058460119836256. Epub 2019 Apr 8.

Klinik für Radiologie, Charité - Universitätsmedizin Berlin, Berlin, Germany.

Background: Intramural duodenal hematoma is a rare condition. Different imaging modalities are at hand for diagnosis.

Purpose: To identify patients with intramural duodenal hematoma and report imaging findings and clinical courses. Read More

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http://dx.doi.org/10.1177/2058460119836256DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6456848PMC
April 2019
2 Reads