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Biomedical subjects

R S MACKAY

Publications and source records attributed to R S MACKAY.

15 recordsLinked to original sources
PubMed1964

DEEP BODY TEMPERATURE OF UNTETHERED DOLPHIN RECORDED BY INGESTED RADIO TRANSMITTER.

Information concerning body temperature was recorded by radio transmission from within a dolphin, Tursiops truncatus, swimming freely in a pool. The temperature varied according to the activity of the animal and appeared to oscillate when the dolphin was returned to the pool after a brief period outside it. The transmitter was passed approximately 17 hours after it had been swallowed. A new type of antenna was used with the circuit. The transmitter can be adapted for telemetering heart beat, movement, aquatic animals.

Animals↗
PubMed1958

X-ray visualization and analysis of multicomponent subjects.

The information carried by x-rays showing the distribution of each material of which a subject is assumed to be composed is distributed on separate films by means of a controlled variation in composition of the scanning radiation. The beam is modulated, for example, by simultaneous motion of several wedges. The method is useful in quantitative x-ray analysis and as a system for making radiographs predominantly sensitive to one material in the subject.

Humans↗
PubMed1957

Endoradiosonde.

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Humans↗