PMID: 9434978Jan 22, 1998Paper

A new Diamentor for measuring kerma-area product and air-kerma simultaneously

Medical Physics
H GfirtnerJ Wild

Abstract

The new M4KDK Diamentor (PTW-Freiburg) for measuring the air-kerma-area product (KAP) and air kerma (AK) simultaneously was evaluated. The special design of the Diamentor chamber influences the variation of the calibration factor with respect to the field size somewhat differently to what is the case with the classic Diamentor. It is therefore recommended that calibration be performed for a larger field size. If the M4KDK Diamentor is calibrated for a field size of 3.8 cm x 3.8 cm (at the chamber), an uncertainty in the AK value of better than 15% for a field size larger than the calibration field, can be expected. The influence of backscattered radiation on the calibration factor is equivalent to that for the classic Diamentor chamber. The variation in response in accordance with tube potential, is also comparable with that of the classic Diamentor. Dramatic changes in response have to be expected if additional filters are introduced in close proximity to the Diamentor chamber.

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Citations

Feb 24, 1999·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·L A DeWerd, L K Wagner
Mar 19, 2011·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Edward Lee Nickoloff
Apr 29, 2008·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Dogan BorRenato Padovani
Aug 20, 2009·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·T OlgarT Yazar
Feb 9, 2006·Radiation Protection Dosimetry·A KosunenM Toivonen
Feb 8, 2006·Radiation Protection Dosimetry·D BorB Cil

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