Cervical spine imaging in patients with trauma: determination of fracture risk to optimize use.

Purpose: To develop a method to use clinically apparent factors to determine cervical spine fracture risk to guide selection of optimal imaging strategies.

Materials And Methods: Records from 472 patients with trauma (168 with fractures, 304 control patients) who visited the emergency department in 1994 and 1995 were reviewed for 20 potential predictors of cervical spine fracture in this retrospective case-control study. Simple logistic regression was used to determine predictors of cervical spine fracture.

Ampullary carcinoma: demonstration by current MR techniques.

The objective of this study was to demonstrate the appearance of ampullary carcinoma using current MR techniques, including fat suppression, gadolinium enhancement, and MR cholangiography. Nine patients with ampullary carcinoma were examined by MRI at 1.5 T.

Effects of delayed processing on mammographic phantom object detection.

Objectives: Delayed processing of films is a common occurrence in mobile mammography screening programs. The effects of such delayed processing on radiologists' detection of phantom test objects are investigated.

Methods: Twelve screen-film combinations were exposed using a phantom and developed after delays of 0, 1, 2, 3, 5, and 7 days.