A cadaver's vertebral column, a phantom, and a volunteer were imaged on a 1.5-T MR
scanner to study the thin, uniform, dark, transverse lines that characterize some …

Editor: It was with interest and a growing sense of concern that I read the article on radiation
scatter in breast therapy by Muller-Runkel and Kalokhe in the June 1990 issue of …

METHODS Signal intensity in magnetic resonance (MR) imaging is presented in arbitrary
units, the use of which is dependent on a number of user-dcfinable characteristics. The …

The significance of linear regions of altered signal intensity that appear in sagittal magnetic
resonance (MR) images along the length of the spinal cord was investigated. Examinations …

PURPOSE: To demonstrate and quantitate the magic angle effect in the intervertebral disk.
MATERIALS AND METHODS: Magnetic resonance (MR) images of a lumbar intervertebral …

An artifact can be defined as any aspect of an image that misrepresents the anatomic and
geometric relationships within the body. Some artifacts are easily identified, such as linear …

The results of magnetic resonance (MR) imaging and computed tomography (CT) in 18
patients with known degenerative disk disease of the lumbar spine were compared. In 60 …

Two phantoms were constructed and imaged for the purpose of reproducing and
understanding the relatively increased signal intensity of intervertebral disks on T1-weighted …

Truncation artifacts occur in MR imaging because Fourier transforms are used to process
MR signal data. These artifacts may alter the intensity, shape, and anatomic detail of …

Enhancement frequency and patterns (linear intradiscal, nodular intradiscal, and peridiscal)
of the 210 previously unoperated lumbar discs were evaluated using contrast‐enhanced …