Multiplanar image reconstruction and 3D imaging using a musculoskeletal phantom: conventional versus helical CT.

Purpose: Our goal was to perform a detailed comparison of the relative performances of helical CT (pitches 1.0, 1.5, and 2.

Reconstructed helical CT scans: improvement in z-axis resolution compared with overlapped and nonoverlapped conventional CT scans.

Objective: This in vitro study was designed to assess the z-axis resolving capabilities of reconstructed helical CT scans obtained with various imaging parameters versus those of conventional CT scans and the effect of decreasing slice index on the z-axis resolution of helical CT.

Materials And Methods: A z-axis line-pair phantom was imaged using conventional nonoverlapped CT scans, conventional CT scans that overlapped by 50%, and helical CT scans with pitches of 1.0 and 1.

Patients' attitudes toward informed consent for intravenous contrast media.

Objectives: To assess patient attitudes concerning informed consent and the risks of ionic and nonionic contrast material, 1,197 completed questionnaires were obtained from individuals either awaiting contrast injection or waiting for other services.

Methods: Six different questionnaire formats were administered, including two detailing the specific risks of ionic and nonionic contrast, respectively. Different questionnaire formats were used to assess whether the severity or the probability of adverse consequences had more influence on a patient's desire for information.

MRI in the detection of malignant infiltration of bone marrow.

Magnetic resonance imaging (MRI) at 0.35 T with a superconductive magnet was performed on 80 patients with known or suspected malignant disease of the bone marrow. The group comprised 50 patients with known primary malignancy and 30 with known multiple myeloma.