Darren H. Berns

  • Citations Per Year
Learn More
We describe the magnetic resonance (MR) plus Gd-diethylenetriamine pentaacetic acid (DTPA) findings in a patient with leptomeningeal spread of lymphoma. Gadolinium-DTPA aided in the diagnosis by offering additional information after noncontrast MR. Magnetic resonance with Gd-DTPA may well prove to be an important adjunct in the work-up of patients suspected(More)
The role of magnetic resonance imaging (MRI) for the evaluation of the spine is expanding rapidly. In addition to being noninvasive, MRI offers high soft-tissue contrast and multiplanar imaging capability. MRI examinations of the spine usually include a T1-weighted spin-echo and a T2-weighted spin-echo and/or a gradient-echo sequence. As in other parts of(More)
To evaluate the ability of gradient echo MR to define the vacuum phenomena, 14 cadaveric lumbar spines were imaged by spin echo and gradient echo MR, CT, and plain radiography following injection of varying amounts of air into the intervertebral disks. Gradient echo MR was more sensitive than spin echo MR or plain radiography in detecting the intradiskal(More)
An experimental study of the measurement of cathode temperature, current distribution, and nearcathode electron number density in a high power hydrogen arcjet is presented. This study is motivated by. the desire to better understand arc-electrode interactions in arcjet thrusters, which in many cases, is the main determinate of arcjet lifetime. Measurements(More)
The case of a child with a pervasive developmental disorder secondary to tuberous sclerosis is presented. Magnetic resonance images demonstrated several areas of decreased signal on both T1- and T2-weighted conventional spin echo sequences. The abnormal areas became more conspicuous on the gradient echo images. The increase in conspicuity of the parenchymal(More)
  • 1