PMID: 3763701Aug 1, 1986Paper

Relations between effective dose equivalent and mean absorbed dose (energy imparted) to patients in diagnostic radiology

Physics in Medicine and Biology
G A Carlsson, C CARLSSON

Abstract

Values of HE/D, the ratio of the effective dose equivalent HE to the mean absorbed dose D to the total body, have been derived as a function of beam quality (HVT) for a variety of Roentgen diagnostic examinations of the adult trunk and head, using tabulations from the literature. Problems in specifying beam quality are discussed. The energy epsilon imparted to the patient can, in Roentgen diagnostic examinations, be determined using a transmission chamber. Since, however, HB/epsilon depends more critically than HE/D on the mass M of the patient (D = epsilon/M), the latter quantity is preferred for risk assessment. HE/D takes values in the range 0.44-2.8 Sv Gy-1. This includes the value 1 Sv Gy-1 resulting from a uniform whole-body irradiation independent of M. The corresponding value of HE/epsilon = 1/M Sv J-1 if M is in kg. It is therefore recommended that clinical measurements of epsilon be supplemented by measurements of the patient's mass so that D = epsilon/M can be estimated and tabulations of organ absorbed doses be supplemented with values of D so as to allow accurate derivation of the ratio HE/D. In optimising the technical parameters of a given examination using the transmission chamber, HE/D as a function of beam qua...Continue Reading

References

Jan 1, 1978·Acta Radiologica: Oncology, Radiation, Physics, Biology·G BengtssonL Aberg
Nov 1, 1978·Health Physics·P W Laws, M Rosenstein
Jun 18, 1975·Radiation and Environmental Biophysics·W Jacobi
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Aug 1, 1984·Physics in Medicine and Biology·G A Carlsson, C A Carlsson
Aug 1, 1983·The British Journal of Radiology·B F Wall, G M Kendall
Nov 1, 1982·The International Journal of Applied Radiation and Isotopes·M Rosenstein
Aug 1, 1965·Acta Radiologica: Therapy, Physics, Biology·C CARLSSON

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Citations

Oct 6, 1988·Biochimica Et Biophysica Acta·M MagócsiG Gárdos
Dec 10, 1987·Biochimica Et Biophysica Acta·J Watras, D Benevolensky
Mar 1, 1994·Computer Methods and Programs in Biomedicine·M SandborgG A Carlsson
Feb 24, 1999·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·G A CarlssonM Sandborg
Jun 7, 2000·Medical Physics·C H McCollough, B A Schueler
Apr 1, 1993·The British Journal of Radiology·R A Coulden, L P Readman
Jun 1, 1995·The British Journal of Radiology·A Almén, S Mattsson
Jan 1, 1988·Dento Maxillo Facial Radiology·E HelmrotS Ericson
May 1, 1995·Physics in Medicine and Biology·J V Atherton, W Huda

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