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Biomedical subjects

J H Feist

Publications and source records attributed to J H Feist.

At least 19 recordsLinked to original sources
PubMed1988

Asbestosis among electricians.

In a cross-sectional study of a small group of non-shipyard electricians, the prevalence of asbestosis, defined as irregular opacities of at least 1/0 profusion, was found to be 15% overall and 25% after 20 years of service. Irregular opacities occurred more frequently among smokers. Cost estimates for asbestos-related disease should include construction electricians in the populations at risk.

Adult↗
PubMed1988

Storage phosphor radiographs vs conventional films: interpreters' perceptions of diagnostic quality.

We compared storage phosphor images with high-quality conventional film-screen images by evaluating physicians' perceptions of image quality and their levels of confidence in making diagnostic interpretations. Eight physicians each examined 11 posteroanterior storage phosphor chest images (obtained with an experimental high-resolution storage phosphor system) side by side with conventional film images of the same patients. The storage phosphor images were obtained only minutes after the conventional radiographs were obtained. Storage phosphor images were digitally printed onto films in two different formats: a full-size (12 X 14 in. [30.5 X 35.6 cm]) and a half-size format of four computer-processed, minified images (6 X 7 in. [15.2 X 17.8 cm] each). Most of the responses rated the quality and resolution/sharpness of conventional images, as well as their ability to display the complete lung field, as either "excellent" or "good"; however, the storage phosphor images received significantly better ratings (p less than .05). Computer-processed minified versions of the storage phosphor images also received better ratings than did the conventional images. When the physicians were asked to rate their confidence level in making diagnoses with each of the two techniques, in 74 of 88 cases they indicated that their level of confidence would be at least as high when using the storage phosphor images as when using the conventional images.

Humans↗
PubMed1977

Extra- and intrasplenic artery aneurysms in portal hypertension.

Extra- and intrasplenic arterial aneurysms have occasionally been encountered in cases of portal hypertension both with and without cirrhosis. The exact pathogenesis is speculative; however, it is postulated that hyperkinetic splenic circulation, probably related to hepatic arterial insufficiency or hypoplasia, constitutes the primary pathogenic mechanism. Other factors such as splenomegaly and hormonal influence may be contributory.

Adult↗
PubMed1975

Acquired tracheomalacia: etiology and differential diagnosis.

The noninvasive diagnosis of impaired mechanical integrity or compliance of the trachea is most accurately made by fluoroscopic observation recorded on video tape or cineradiography, with or without benefit of artificial contrast media (contrast tracheography). In particular, localized buckling, collapse or dilatation indicative of focal tracheomalacia may thus be diagnosed in vivo and correlated with diseases of the central airways. Congenital tracheomalacia is a rare, bu, well described entity. Cases of acquired tracheomalacia occur with increasing frequency, but are often not clearly recognized. We contrast the dynamic behavior of the normal trachea with the abnormal dynamics characteristic of focal tracheomalacia. Such lesions may result from trauma, surgical procedures, chronic irritation, inflammation, mechanical changes, or malignancy.

Carcinoma, Adenoid Cystic↗