Biomedical subjects

G P Gross

Publications and source records attributed to G P Gross.

11 recordsLinked to original sources

PubMed1990

Bioassay and laboratory survey scheduling based on radioisotope inventory.

Bioassay and laboratory survey schedules can be generated using a radioisotope inventory program. This paper discusses the use of laboratory activity, past performance and operational factors for laboratory survey frequency determination, and use of laboratory activity for bioassay scheduling. Mayo Clinic has recently instituted both applications with the use of a computer. Initial results indicate general acceptance of the concept by our radiation workers, an 18% increase in laboratory surveys performed, and a 21% decrease in the total number of bioassays performed annually.

Humans↗

PubMed1979

Sporotrichoid cutaneous infection due to Mycobacterium chelonei.

Extensive cutaneous lesions that simulated sporotrichosis developed in a patient. Mycobacterium chelonei, a facultative pathogen that exists as a saprophyte in the environment and rarely produces clinical disease in humans, grew from culture of biopsy material. There was no evidence of visceral involvement, and the lesions healed spontaneously within six months.

Aged↗

PubMed1979

Erythema chronicum migrans with purpura and polymorphonuclear infiltrates.

Erythema chronicum migrans with an intensely purpuric border developed in a 70-year-old woman. A biopsy specimen, in addition to showing the usual perivascular mononuclear infiltrate, demonstrated numerous polymorphonuclear leukocytes associated with leukocytoclasis. Immunofluorescence study showed vascular deposition of IgM and C3.

Aged↗

PubMed1979

Cystic chromomycosis due to Wangiella dermatitidis.

Chromomycosis is a chronic, slowly progressive disease of the skin and subcutaneous tissue produced by several species of dematiaceous or pigmented fungi, especially Phialophora gougeroti. Verrucous nodules and flattened annular plaques are the most frequently reported skin lesions in chromomycosis, but deep abscesses and cystic lesions have also been reported. We describe herein a case of cystic chromomycosis due to Wangiella dermatitidis that developed following a nonprenetrating injury to the thumb.

Chromoblastomycosis↗

PubMed1977

Splenic sequestration syndrome at mountain altitudes in sickle/hemoglobin C disease.

The splenic sequestration syndrome was observed in five children with sickle/hemoglobin C (S/C) disease in association with a change in altitude. In four of them, it occurred during or immediately following a trip to mountain altitudes greater than 9,000 feet. In the fifth child, the crisis occurred in ten days after travel in a pressurized plane from sea level to Denver. No previous reports of this complication in S/C patients during mountain travel have been noted although the occurrence is known in association with aircraft flights.

Abdomen↗

PubMed1977

Radiation protection requirements for a whole-body CT scanner.

Exposure values for a whole-body CT scanner, obtained from a room protection survey covering one month (119 patients), are reported. It was found that weekly exposures could be expected to be in the range of 350-750 mR/week for a daily load of 12 patients. The h.v.l. of gypsum board, lead, and plate glass at this radiation level was 1.8, 0.020, and 1.3 cm, respectively. The authors suggest that plate glass is not the method of choice for shielding a high-volume body scanner installation unless a large enough lead glass window is not available or cannot be installed in time to meet construction deadlines.

Radiation Dosage↗

PubMed1973