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Biomedical subjects

G C Hansen

Publications and source records attributed to G C Hansen.

10 recordsLinked to original sources
PubMed1991

Endoluminal catheter-assisted transcervical US of the human embryo. Work in progress.

To enhance visualization of anatomic structures of the human embryo, the authors used a commercially available catheter-based ultrasound (US) transducer (12.5 MHz) introduced through the cervix and into the endometrial cavity of seven women about to undergo voluntary termination of first-trimester pregnancy. The authors term this technique endoluminal catheter-assisted transcervical (ELCAT) sonography. In none of the patients did the US catheter rupture the fluid-filled chorionic/amniotic cavity. The duration of pregnancy ranged from 5.2 to 10.0 menstrual weeks. The most prominent anatomic structures visualized were the heart and neural tube. As an investigational technique, ELCAT US can be used to image anatomic structures of the developing human embryo.

Catheterization↗
PubMed1978

Computed tomography in the evaluation of mediastinal lipomatosis.

Mediastinal abnormalities can present a challenging differential diagnosis. One of the many causes of superior mediastinal widening is excess deposition of fat or mediastinal lipomatosis. Mediastinal widening was evaluated by routine chest radiography, conventional tomography, and computed tomography in four patients with steroid induced Cushing's syndrome or simple obesity. Computed tomography was the only modality that definitively diagnosed mediastinal lipomatosis in each case.

Cushing Syndrome↗
PubMed1978

Computed tomography diagnosis of renal angiomyolipoma.

Angiomyolipomas with a high fat content can be diagnosed by CT, thus eliminating the need for angiography. Surgery can then be tailored for maximal renal tissue preservation. One unilateral and two bilateral surgically confirmed cases of renal angiomyolipoma are presented with a typical fourth case in which surgery was cancelled based on the pathognomonic CT findings.

Adult↗
PubMed1977

The value of sialography in the diagnosis of parotid tumors. A clinicopathological correlation.

The importance of sialography in the diagnostic evaluation of the condition of a patient with a parotid mass remains uncertain; some proponents advise use of sialography routinely, while others believe it to be worthless. To help resolve these conflicting opinions, a retrospective study of 40 patients was carried out that compared sialographical interpretations with respective surgical-histological findings. The results of this study show that generally reliable information, which may serve to influence therapeutic decisions concerning these patients, can be gleaned from sialography.

Humans↗