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Biomedical subjects

L E Williams

Publications and source records attributed to L E Williams.

At least 145 records · Page 8Linked to original sources
PubMed1974

Dual camera studies of pulmonary function with computer processing of data.

Xenon 133 and 2 scintillation cameras arranged to view both anterior and posterior lung fields are being used routinely for evaluation of pulmonary function. Scintiphotograms are obtained from both cameras throughout the course of both perfusion and ventilation portions of the study. In addition, data from both cameras are digitized and stored on line in a dedicated computer for further analysis. Computer processing of data permits quantitative information to be obtained on perfusion, ventilation and clearance of the radioactive gas from selected regions of the anterior and posterior lung fields. Ventilation-perfusion ratios and washout times are likewise calculated by computer.

Computers↗
PubMedDate not supplied

A perspective on the usefulness of computers in nuclear medicine.

A computer system in clinical nuclear medicine has a wide variety of operations which it can perform. These range from simple data acquisition and tabulation to elaborate temporal and spatial reconstructions. Simultaneous recording of physiological data has also expanded the number of nuclear medical studies possible. The multiple-gated cardiac equilibrium analysis is the primary example of this format which has evolved rapidly with the availability of inexpensive central memory. Decreasing size and cost of processor units recently have led to the development of multiple processor systems. In some cases, the peripheral devices have a microprocessor already built in. The total cost of the computer system is essentially dictated by the number of peripheral devices.

Computers↗