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Preliminary Evaluation of Absorbed Dose in Mammography : Six Views

Preliminary Evaluation of Absorbed Dose in Mammography : Six Views ABSTRACT-Absorbed doses were measured in rads (tissue) in 10 females undergoing mammography by the Egan technique. The patients were selected at random, and no attempt was made to correlate the data with breast type. To compare these data with those of Gilbertson, the latter must first be converted from exposure in air (R) to absorbed dose in tissue (rads) by multiplying by 0.92 rads (tissue)/R for the energies used in the technique proposed by Egan. When this conversion is made, the two sets of data agree within the statistical limits of the experiments. INDEX TERMS: Mammography, dosimetry Radiology 95: 395-397, May 1970 • is a presentation of the results obtained in a preliminary study of the absorbed dose in routine mammography by the Egan technique (1). The information obtained to date is intended to furnish the basis for a detailed evaluation of the factors influencing absorbed dose and is published at this time for correlation with the data of Gilbertson et at. (2). H I S PAPER DOSIMETRY TECHNIQUE The radiological examination utilized in this program is that developed by Egan. It consists of the following factors: low kilovoltage, high milliampere seconds, industrial fine-grain film, low filtration, and http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Radiology Radiological Society of North America, Inc.

Preliminary Evaluation of Absorbed Dose in Mammography : Six Views

R. C. Palmer , R. L. Egan , and B. J. Barrett
Radiology , Volume 95: 395 – May 1, 1970
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Publisher
Radiological Society of North America, Inc.
Copyright
Copyright © May 1970 by Radiological Society of North America
ISSN
1527-1315
eISSN
0033-8419
Publisher site
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Abstract

ABSTRACT-Absorbed doses were measured in rads (tissue) in 10 females undergoing mammography by the Egan technique. The patients were selected at random, and no attempt was made to correlate the data with breast type. To compare these data with those of Gilbertson, the latter must first be converted from exposure in air (R) to absorbed dose in tissue (rads) by multiplying by 0.92 rads (tissue)/R for the energies used in the technique proposed by Egan. When this conversion is made, the two sets of data agree within the statistical limits of the experiments. INDEX TERMS: Mammography, dosimetry Radiology 95: 395-397, May 1970 • is a presentation of the results obtained in a preliminary study of the absorbed dose in routine mammography by the Egan technique (1). The information obtained to date is intended to furnish the basis for a detailed evaluation of the factors influencing absorbed dose and is published at this time for correlation with the data of Gilbertson et at. (2). H I S PAPER DOSIMETRY TECHNIQUE The radiological examination utilized in this program is that developed by Egan. It consists of the following factors: low kilovoltage, high milliampere seconds, industrial fine-grain film, low filtration, and

Journal

Radiology – Radiological Society of North America, Inc.

Published: May 1, 1970

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