Biomedical subjects

S B Halls

Publications and source records attributed to S B Halls.

2 recordsLinked to original sources

PubMed1991

Portable scanning slit device for obese patients.

A portable apparatus with rotating scanning slits has been designed to reduce scatter in the radiographs of obese patients. Rotating scanning slit radiography reduces scatter efficiently, but previous instruments with linear or curved slits have been too heavy to be portable. The author's "dart-board" pattern of multiple sector-shaped holes is theoretically efficient at reducing scatter, compensates for potential ring artifacts by overlapping the holes and expands the holes in the lower plate to account for penumbra. Computer simulation with Monte Carlo techniques shows that the new design is free of concentric ring artifacts. This design should improve the quality of radiographs of very obese patients.

Humans↗

PubMed1990

Coronal computed tomography.

The authors describe a method of direct coronal computed tomography (CT) of the body for infants and children who are introduced onto the gantry in a lateral decubitus position transversely across the examination table. Scans are planned from a lateral scout view, with the number of coronal scans ranging from four to six. Images are more informative and detail is sharper than routine axial cuts with coronal reformations. This method is valuable in resolving complex problems related to disease adjacent to the diaphragm and can accurately demonstrate the extension and relation of lesions to neighboring structures.

Hernia, Diaphragmatic↗