A prospective study on the utility of diffusion-weighted and quantitative chemical-shift magnetic resonance imaging in the distinction of adrenal adenomas and metastases.

Objective: The purpose of this study was to assess the utility of diffusion-weighted and quantitative chemical-shift magnetic resonance imaging in the differentiation of adrenal adenomas and metastases.

Methods: One hundred eight patients (45 men and 63 women; mean age, 57 years) with 126 adrenal masses were prospectively evaluated by magnetic resonance imaging in this study. Signal intensity and apparent diffusion coefficient (ADC) measurements were performed on axial in- and opposed-phase T1-weighted gradient-echo images and on diffusion-weighted images, respectively.

Sonographic appearance of the normal appendix in children.

Purpose: To determine the visualization rate of the appendix in children without appendicitis and investigate factors affecting it.

Methods: Between January 2010 and April 2010, 205 consecutive children (103 boys and 102 girls; mean age: 9 years) without clinical signs of appendicitis were examined by ultrasound (US). The location of appendix was determined.