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A note on the determination of half-value layers of soft x-rays.
The British Journal of Radiology, 1952A method is described of deriving a reliable half-value layer of X radiation from measurements made with a dose-meter whose readings require to be corrected for quality. The magnitude of the corrections to the observed half-value layer is considered and the effect this has on the dosemeter quality factor is discussed.
M. T. Morrison, G. W. Reed
semanticscholar +3 more sources
Half-value layer determination using thermoluminescent dosimeters for digital mammography
Radiation Measurements, 2010Abstract The quality assurance of digital mammogram has been included in the Standards of Medical Exposure Quality Assurance in Taiwan since July, 2008. According to the Standards, determination of the half-value layer (HVL) is an integral part of mammographic dosimetry which requires the evaluation of patient's glandular dose.
Chuan-Jong Tung +5 more
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Problem of Determination of the First Half-Value Layer of X-Ray Radiation
Biomedical Engineering, 2009The methods for determination of the first half value layer of X-ray radiation are analyzed. The organized comparison revealed significant scatter from different sources of the first half value layer for identical conditions. The analytical expression was derived for calculation of the first half value layer based on the measured value and total ...
M. G. Petrushanskii
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Use of the term `half-value-layer'
Physics in Medicine & Biology, 1969D. E. Charlton
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Physica medica (Testo stampato), 2020
PURPOSE This study aimed to compare two methods of assessing the half-value layer (HVL) for computed tomography scanners in a single-rotation technique with and without lead apertures (SRTLA / SRT).
A. Fukuda +5 more
semanticscholar +1 more source
PURPOSE This study aimed to compare two methods of assessing the half-value layer (HVL) for computed tomography scanners in a single-rotation technique with and without lead apertures (SRTLA / SRT).
A. Fukuda +5 more
semanticscholar +1 more source
Nano Energy, 2015 Polypyrrole@Sulfur@Polypyrrole composite with a novel three-layer-3D-structure, which consists of an external polypyrrole coating layer, an intermediate sulfur filling layer, and an internal polypyrrole split-half-tube conducting matrix layer, has been ...
Xin Liang, Hua Kun Liu, Zhaoxiang Wang
exaly +1 more source
Uncertainties in half value layer determination in mammography
AIP Conference Proceedings, 2016A critical analysis of the methodologies for evaluating the x-ray half value layer was conducted. Experimental data were fitted by using MATLAB curve fitting toolbox, to an exponential function. Half value layer and its uncertainties were determined directly from the parameter of the fitted function.
S. Mijović +3 more
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Comparative half value layer study of novel PbO-B2O3-CuO-CaO glasses with previous reports
Nexus of Future MaterialsThis work assesses the gamma-ray shielding performance of newly fabricated glasses with diversified PbO and B 2 O 3 content, while comparing the results with those of previously reported glasses.
Vicram Setiawan +3 more
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