Diagnostic accuracy of segmental enhancement inversion for the diagnosis of renal oncocytoma using biphasic computed tomography (CT) and multiphase contrast-enhanced magnetic resonance imaging (MRI).

Objectives: Segmental enhancement inversion (SEI) is a controversial imaging finding reportedly specific for the diagnosis of renal oncocytoma. The purpose of this study was to re-evaluate SEI using biphasic CT and multiphase MRI.

Methods: With research ethics board approval, a retrospective analysis of patients with resection or biopsy of oncocytoma or chromophobe renal cell carcinoma (Ch-RCC) between 2008-2012 was performed.

Diagnostic accuracy of segmental enhancement inversion for diagnosis of renal oncocytoma at biphasic contrast enhanced CT: systematic review.

Objectives: To use systematic review to evaluate the diagnostic accuracy of segmental enhancement inversion (SEI) at contrast-enhanced biphasic multi-detector computed tomography (MDCT) for the diagnosis of renal oncocytoma.

Methods: Several electronic databases were searched through October 2013. Two reviewers independently selected studies that met the inclusion criteria and extracted data.

What makes a great radiology review course lecture: the Ottawa radiology resident review course experience.

Background: Little objective evidence exists regarding what makes a good lecture. Our purpose was to determine qualities of radiology review course lectures that are associated with positive audience evaluation.

Methods: 57 presentations from the Ottawa Resident Review Course (2012) were analyzed by a PGY4 radiology resident blinded to the result of audience evaluation.

CT in adults: systematic review and meta-analysis of interpretation discrepancy rates.

Purpose: To use meta-analysis to determine the discrepancy rate when interpreting computed tomography (CT) studies performed in adult patients and to determine whether discrepancy rate differs on the basis of body region or level of radiologist training.

Materials And Methods: MEDLINE and EMBASE were searched from 1946 to June 2012 by using the combination "radiology AND (error OR peer review)." Two reviewers independently selected studies that met the inclusion criteria and extracted study data.

Associations between residency selection strategies and doctor performance: a meta-analysis.

Objectives: The purpose of this study was to use meta-analysis to establish which of the information available to the resident selection committee is associated with resident or doctor performance.

Methods: Multiple electronic databases were searched to 4 September 2012. Two reviewers independently selected studies that met the present inclusion criteria and extracted data in duplicate; disagreement was resolved by consensus.

Association of study quality with completeness of reporting: have completeness of reporting and quality of systematic reviews and meta-analyses in major radiology journals changed since publication of the PRISMA statement?

Purpose: To evaluate whether completeness of reporting of systematic reviews and meta-analyses in major radiology journals has changed since publication of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement; a secondary objective is to evaluate whether completeness of reporting (ie, PRISMA) is associated with study quality (ie, Assessing the Methodological Quality of Systematic Reviews [AMSTAR]).

Materials And Methods: Systematic reviews and meta-analyses published in major radiology journals between January 2007 and December 2011 were identified by searching MEDLINE with the modified Montori method. Studies were reviewed independently by two investigators and assessed for adherence to the AMSTAR and PRISMA checklists.

The mysterious organ. Spectrum of focal lesions within the splenic parenchyma: cross-sectional imaging with emphasis on magnetic resonance imaging.

Incidental splenic lesions are frequently encountered at imaging performed for unrelated causes. Splenic cysts, hemangiomas, and lymphomatous involvement are the most frequently encountered entities. Computed tomography and sonography are commonly used for initial evaluation with magnetic resonance imaging reserved as a useful problem-solving tool for characterizing atypical and uncommon lesions.

Can American College of Radiology in-training examination scores be used to predict Canadian radiology licensing examination results? A respective study.

Background: The purpose of this study is to evaluate the relationship between American College of Radiology (ACR) in-training examination scores and performance on the Royal College of Physicians and Surgeons of Canada (RCPSC) radiology licensing examination.

Methods: Percentile ACR examination scores for 67 residents were obtained from 1995 to 2011 for four years of training and compared with results of the RCPSC examination. Mean ACR scores of residents who passed and residents who failed their RCPSC examination were compared with a t-test.

Negative predictive value of intravenous contrast-enhanced CT of the abdomen for patients presenting to the emergency department with undifferentiated upper abdominal pain.

The purpose of this study is to calculate the negative predictive value (NPV) CT of the abdomen in patients presenting to the emergency department (ED) with undifferentiated upper abdominal pain. Approved by the hospital research ethics board, this retrospective study examined consecutive patients presenting to the ED with undifferentiated upper abdominal pain whose intravenous contrast-enhanced CT of the abdomen was reported as "normal" from June 2006-August 2010. Exclusion criteria included active malignancy, trauma, and known inflammatory bowel disease.

A physiotherapy service to an emergency extended care unit does not decrease admission rates to hospital: a randomised trial.

Background: One of the reasons physiotherapy services are provided to emergency departments (EDs) and emergency extended care units (EECUs) is to review patients' mobility to ensure they are safe to be discharged home.

Aim: To investigate whether a physiotherapy service to an EECU altered the rate of hospital admission, rate of re-presentation to the ED, visits to community healthcare practitioners, return to usual work/home/leisure activities and patient satisfaction.

Methods: A randomised trial with concealed allocation, assessor blinding and intention-to-treat analysis was undertaken in an EECU.

Introduction of QUIP (quality information program) as a semi-automated quality assessment endeavor allowing retrospective review of errors in cross-sectional abdominal imaging.

Rationale And Objectives: The aims of this study were to review the role of a quality information program (QUIP) as a semiautomated educational feedback mechanism and to review common errors in cross-sectional abdominal and pelvic studies as an initiative for continuing medical education and improving patient care.

Materials And Methods: Abdominal and pelvic errors identified by QUIP and cases collected from morbidity and mortality conferences were reviewed. Errors were classified and graded to levels of morbidity.

Benign biliary strictures: a current comprehensive clinical and imaging review.

Objective: There is a wide spectrum of nonneoplastic causes of biliary stricture that can pose a significant challenge to clinicians and radiologists. Imaging plays a key role in differentiating benign from malignant strictures, defining the extent, and directing the biopsy. We describe the salient clinical and imaging manifestations of benign biliary strictures that will help radiologists to accurately diagnose these entities.

Percutaneous image-guided biopsy of the spleen: systematic review and meta-analysis of the complication rate and diagnostic accuracy.

Purpose: To use meta-analysis to determine the complication rate and diagnostic accuracy of image-guided percutaneous needle biopsy of the spleen.

Materials And Methods: Several electronic databases were searched through July 2010 without language restrictions. Two reviewers independently selected studies that met the inclusion criteria for the diagnostic accuracy and complication rate arms of the study.

Thinking beyond peritoneal carcinomatosis: imaging spectrum of unusual disseminated peritoneal entities.

Although peritoneal carcinomatosis is the most common entity involving the peritoneum diffusely, a vast array of unusual diseases may affect the peritoneal surfaces. These entities can be further categorized into infectious, neoplastic, and miscellaneous, and miscellaneous conditions. Cross-sectional imaging, including computed tomography and magnetic resonance imaging are excellent modalities for further characterization of these unusual diseases.

Malformations of the fetal dural sinuses.

Background: Dural sinus malformation (DSM) is a term used to describe congenital vascular malformations characterized by massive dilation of one or more dural sinuses: these dilatations are typically associated with arteriovenous shunts. Such malformations can present antenatally but their early natural history and anatomy is poorly defined.

Methods: We reviewed five years of autopsy experience and retrieved three primary vascular malformations of the fetal dural sinuses with ultrasound, magnetic resonance imaging (MRI) and post-mortem correlation.

Leiomyomas beyond the uterus: unusual locations, rare manifestations.

Uterine leiomyomas affect 20%-30% of women older than 35 years. Extrauterine leiomyomas are rarer, and they present a greater diagnostic challenge: These histologically benign tumors, which originate from smooth muscle cells, usually arise in the genitourinary tract (in the vulva, ovaries, urethra, and urinary bladder) but may arise in nearly any anatomic site. In addition, unusual growth patterns may be seen, including benign metastasizing leiomyoma, disseminated peritoneal leiomyomatosis, intravenous leiomyomatosis, parasitic leiomyoma, and retroperitoneal growth.