Cavoatrial junction and central venous anatomy: implications for central venous access tip position.

Purpose: To quantify the anatomic relationships of the cavoatrial junction and propose a system for describing central venous access device tip location on the basis of structures visible on chest radiographs.

Materials And Methods: The authors performed a retrospective study of 100 consecutive computed tomographic (CT) studies from a predominantly pediatric population consisting of 52 male and 48 female patients aged 12-28 years (mean age, 16 years). With use of multiplanar and scout images, relevant mediastinal structures were marked, vertebral levels were noted, and measurements were made electronically.

Early ischemia in growing piglet skeleton: MR diffusion and perfusion imaging.

Purpose: To determine whether diffusion changes with ischemia of increasing duration, whether diffusion magnetic resonance (MR) imaging provides different information than does gadolinium-enhanced imaging, and which structural and/or biochemical changes are potentially responsible for any changes in diffusion.

Materials And Methods: Ischemia was surgically induced in one hip of each piglet (n=8) after approval from the Subcommittee on Research Animal Care; the other hip served as a control. Piglets were imaged at approximately 48 hours and 1, 2, 4, and 8 weeks after surgery at 1.

Multidetector row CT in pediatric musculoskeletal imaging.

The proliferation of multidetector row CT (MDRCT) has had a significant effect on imaging of the musculoskeletal system. An increasing number of such examinations is being performed in children. We reviewed our experience using such examinations in children during a period of 20 months.