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Biomedical subjects

B Morse

Publications and source records attributed to B Morse.

23 records · Page 2Linked to original sources
PubMed1983

The role of percutaneous aspiration in the diagnosis of pancreatic abscess.

Percutaneous aspiration should be performed on pancreatic/peripancreatic fluid collections when an abscess is suspected. Thirty-one percutaneous aspirations were performed on 21 such patients and seven (33%) proved to have an abscess. A Gram stain after the aspiration is important, as it can make an immediate diagnosis of an abscess. By helping make an early diagnosis, percutaneous aspiration might reduce the high mortality rate associated with a pancreatic abscess while avoiding surgery in those who have sterile fluid collections. Two complications (6%) occurred: superinfection of a pseudocyst and a hemoperitoneum.

Abscess↗
PubMed1978

Role of two-dimensional surface characteristics in pictorial depth perception.

The purpose of the present experiment was to test the hypothesis that flat surface information for the plane of projection is the essential difference between ordinary and pictorial perception. Adults were asked to make relative size judgments of pairs of squares and triangles placed and pictured at various distances. The conditions were: real scene controls, life-size slides and prints, and real scenes viewed through clear glass, textured glass, a screen and a 50-mm lens. The error rate was significantly lower with real scenes than with either slides or prints which did not differ. The control data for real scenes were used for comparison to test for the effects of interposed flat surfaces on size judgments of real scenes. Viewing real scenes through either a clear glass pane or a 50-mm lens increased the error rate two and one-half times that of the controls for real scenes. Neither textured glass nor a screen significantly affected error rate. Results were interpreted as supporting the hypothesis that information about a flat surface for the plane of projection is the critical variable determining the special character of picture perception.

Depth Perception↗
PubMed1978

Erythrokinetics and ferrokinetics of a viral-induced murine erythroblastosis.

A variant of Rauscher leukemia virus, designated RLV-A, induced a slow progressive impairment of erythropoiesis in BALB/c mice. Identified in this study were a shortened red cell 51-cr half-time, anemia with indices showing minimal but significant hypochromia, ineffective erythropoiesis, and infiltration of the liver, spleen, and peripheral blood with erythroid pecursors. Ferrokinetic studies indicated a normal plasma iron turnover in infected mice but a decreased red cell iron turnover. Large amounts of 59Fe were taken up by the enlarged liver and spleen. Peak splenic heme 59Fe synthesis was delayed 12 hr in the infected mice. The substantial increase in the splenic intraerythrocytic nonheme iron pool and the hypochromic indices indicate a process analogous to that seen in the sideroblastic anemias. The disease produced by this RLV-A variant may prove useful for studying various aspects of the preleukemic sideroblastic anemias and DiGuglielmo syndrome.

Anemia↗