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Biomedical subjects

R Sundman

Publications and source records attributed to R Sundman.

3 recordsLinked to original sources
PubMed1978

A ring detector positron camera system: its merits: clinical experience.

A ring detector positron camera system for CT of the brain is described. The system uses 95 NaI (Tl) detectors, arranged with cylindrical geometry, for the simultaneous detection of coincidences from 1,900 detector combinations. With a new sampling technique an experimental system resolution of 7 mm FWHM has been obtained. The sensitivity was found to be 5,300 c/s with a 100-keV energy threshold and using a 19.2-cm-diameter cylindrical phantom with a homogeneous specific activity of 1 muCi/cm3. A clinical study of blood-brain barrier damage using 68Ga-EDTA is reported.

Brain↗
PubMed1976

Picture processing in computed tomography.

Using the EMI scanner system computer, picture processing of various kinds can be performed. Computer programs enabling analysis of regions of interest, subtraction, smoothing, and reconstruction in three dimensions have been designed; they are easy enough to be handled by the regular staff. The potential of the methods is illustrated.

Computers↗