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Biomedical subjects

J A van Luijk

Publications and source records attributed to J A van Luijk.

3 recordsLinked to original sources
PubMed1986

Application of a photodiode in dental radiology.

A photodiode in a light-tight housing was used as an x-ray detector. Calibration against a standard ionization chamber showed that, for the range of radiation qualities used in dentistry, its output was a reliable measure of the rate of exposure. Photodiodes are available in very small sizes and can be used intraorally. The feasibility of automatic exposure control for intraoral radiography was considered. Measurement of transmission fractions through the mandible with various radiation qualities resulted in a numerical evaluation of radiation risk approximated by the absorbed dose.

Equipment Design↗
PubMed1981

NMR: dental imaging without x-rays?

Recently, advances in a new method of medical imaging have been reported by various authors. The method is based on the physical phenomenon of nuclear magnetic resonance (NMR) and is a well-established technique used in chemistry and physics. Radio waves are transmitted and detected in the presence of magnetic fields; the method is noninvasive and does not use ionizing radiation. The potential use of NMR in dentistry and basic concepts of NMR imaging are discussed.

Humans↗