Rapid MRI of the breast in evaluating lesions discovered on screening.

Background: In Canada, breast MRI has traditionally been reserved for evaluation of disease extent in patients with known breast malignancy. More recently, MRI has been emerging as an instrument for breast screening. However, its utilization is limited by increased relative cost and increased reader time.

Quantitative non-contrast measurements improve diagnosing dural venous sinus thrombosis.

Introduction: The only direct sign of sinus thrombosis on non-contrast computerized tomography (NCCT) is the hyperdense sign. The purpose of our study was to assess quantitative parameters for diagnosis of superficial venous sinus thrombosis and to compare these quantitative criteria with the current standard of qualitative evaluation.

Methods: This retrospective case-control study included 18 patients with acute superficial sinus thrombosis and 18 matched controls.

Inter-rater agreement in the characterization of cystic renal lesions on contrast-enhanced MRI.

Purpose: To evaluate inter-observer agreement of MRI features and classification of cystic renal masses among radiologist and radiology trainees.

Methods: Four readers (two radiologists and two radiology trainees) retrospectively reviewed 100 cystic renal lesions on gadolinium enhanced MRI and assigned each a Bosniak classification (1, 2, 2F, 3, and 4). Lesions were also assessed on their individual features including size, presence of nodules, septations, and enhancement.