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Biomedical subjects

B D Pressman

Publications and source records attributed to B D Pressman.

14 recordsLinked to original sources
PubMed1991

Kinematic magnetic resonance imaging of the joints: techniques and clinical applications.

Recently, kinematic magnetic resonance imaging (MRI) techniques have been developed to provide diagnostic information related to the functional aspects of the joints. The kinematic MRI evaluation of the joint is used to assess the various interactions of the soft tissues and bony anatomic structures that comprise the joint, and to evaluate the relative alignment of these structures through a specific range of motion. The use of kinematic MRI techniques for examination of the joints provides the radiologist and the clinician with augmented data of anatomic and movement-related information.

Humans↗
PubMed1987

An early CT sign of ischemic infarction: increased density in a cerebral artery.

The diagnosis of ischemic cerebral infarction by CT usually is not possible for 12-24 hr after the event. A sign that allows earlier diagnosis is increased density of a cerebral vessel secondary to a thrombus or embolus. We report 19 cases of increased density in a middle cerebral artery or one of its major branches visible on the initial CT scan of patients subsequently clinically proven to have suffered a cerebrovascular accident. In three cases angiography confirmed the presence of embolus or thrombus as seen on the CT scans. In several cases subsequent CT scans showed the density to dissipate, thereby confirming its nature as thrombus or embolus. Recognition of this finding will allow earlier diagnosis of ischemic infarction, which may be important in instituting an appropriate therapeutic regimen.

Adult↗
PubMed1975

Posterior fossa hemorrhage. Localization by computerized tomography.

The differentiation between pontine and cerebellar hemorrhage is important both prognostically and therapeutically but is often very difficult. Computerized axial tomography of the brain is a new, rapid, nonivasive method of studying intracranial disease. This technique proved useful in making this important differential diagnosis in the case reported here.

Cerebral Hemorrhage↗
PubMed1975

Histiocytosis-X of the hypothalamus.

Hypothalamic masses associated with histiocytosis-X may be mistaken for neoplasms. As a result radiation therapy will often be administered rather than chemotherapy, which appears to be the treatment of choice for histiocytosis-X of the hypothalamus. Particularly in young people, the possibility of granulomatous disease should be entertained and biopsy should be considered in the presence of a hypothalamic mass.

Adolescent↗
PubMedDate not supplied

MR imaging of temporomandibular joint abnormalities associated with cervical hyperextension/hyperflexion (whiplash) injuries.

Patients often have temporomandibular joint (TMJ) dysfunction-related symptoms after cervical hyperextension/hyperflexion injuries ("whiplash") caused by rear-end motor-vehicle collisions. To determine abnormalities of the TMJ associated with these injuries, 33 consecutive symptomatic patients (66 joints) with no direct trauma to the jaw, mouth, head, or face due to the accident and no prior history of TMJ dysfunction underwent magnetic resonance (MR) imaging, and the images were retrospectively analyzed. Overall, 29 (88%) patients had some type of TMJ abnormality related to whiplash injury. Displacement of the disk was seen in 37 (56%) of the TMJs as follows: 21 (32%) had anterior displacement with reduction, nine (14%) had anterior displacement without reduction, six (9%) had lateral or medial displacement, and one (2%) had posterior displacement. On T2-weighted images, 43 (65%) TMJs had abnormal joint fluid or edema, predominantly affecting the joint capsule and/or lateral pterygoid muscles. The finding that many of the patients had joint fluid and/or soft-tissue edema indicates that T2-weighted images are especially useful for assessment of patients with a history of whiplash injury.

Adult↗