Biomedical subjects
C Borrás
Publications and source records attributed to C Borrás.
The use of Teflon-embedded calcium sulphate: dysprosium thermoluminescent dosimeters for chest radiography.
As part of a U.S. multi-regional pilot study conducted by the six Centers for Radiological Physics, 12-mm-diameter by 0.4-mm-thick CaSO4:Dy Teflon-embedded discs were evaluated and used to measure patient entrance exposure on 60 "average" patients at 12 clinical centers. The discs were found to have adequate sensitivity, reproducibility and linearity up to 69.7 microC kg-1 (270 mR). The minimum measurable exposure was estimated as 0.4 microC kg-1 (1.5 mR). All responses were corrected for energy dependence, which varied +/- 20% from 1.7 to 6.5 mm Al half-value layer. Patient entrance exposure values ranged from 1.3 to 28 microC kg-1 (5 to 110 mR), with a median value of 5.2 microC kg-1 (20 mR). This value agreed with exposure measurements made on the chest radiography equipment using an ionization chamber and a phantom which simulated an "average" patient, and with published Nationwide Evaluation of X-Ray Trends (NEXT) data for the same period.
[Apple Peel syndrome: an uncommon form of intestinal atresia (author's transl)].
A case of Apple Peel syndrome in a 1,800 g. premature female infant is reported. In a two stage approach, the dilated proximal segment of the jejunum was treated with jejunoplasty and termino-terminal anastomosis. After 55 days of total parenteral nutrition, oral feedings were instituted with good tolerance and satisfactory weight gain. Five months postoperatively, her weight is 5,500 g. and is on a standard diet for her age.