Alternative input devices for efficient navigation of large CT angiography data sets.

Purpose: To compare devices for the task of navigating through large computed tomographic (CT) data sets at a picture archiving and communication system workstation.

Materials And Methods: The institutional review board approved this study, and all subjects provided informed consent. Five radiologists were asked to find 25 different vascular targets in three CT angiography data sets (average number of sections, 1025) by using several devices (trackball, tablet, jog-shuttle wheel, and mouse).

Stability of retrospective reports in depression: traumatic events, past depressive episodes, and parental psychopathology.

Research findings based on the retrospective reports of depressed individuals have long been held suspect because of possible negative reporting biases associated with depression. In the present study we assess the stability of retrospective reports of past traumatic events, past depressive episodes, parental depression, and parental substance abuse in a sample of 234 adults whose depression status changed over two assessments conducted one year apart. Depression status was found to affect reporting of number of past depressive episodes and past traumatic events, but not reporting of parental psychopathology.