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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:00 |
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Conference: Bucharest University Faculty of Physics 2006 Meeting
Section: Electricity and Biophysics
Title:
Optimization of the relationship between dose and image quality in diagnostic radiology
Authors:
Tănase Alina
Affiliation:
Faculty of Physics, University of Bucharest Physics Faculty, University of Bucharest, P.O. Box MG 11 Magurele Bucharest, Romania and OTDM*
E-mail
alinatanase_otdm@yahoo.com
Keywords:
X-rays, diagnostic radiology, dose, image quality
Abstract:
X-rays are known to cause malignancies, skin damage and other side effects and they are thus potentially dangerous. Therefore, it is essential and in fact mandatory to reduce the radiation dose in diagnostic radiology as far as possible.
The dose is linked to image quality and the image quality may not be lowered so far that it jeopardizes the diagnostic outcome of a radiographic procedure. The process of reaching this balance between dose and image quality is called optimization. The aim of this thesis was to propose and evaluate methods for optimizing the radiation dose-image quality relationship in diagnostic radiography with a focus on clinical usefulness.
Two recently developed methods for digital scoliosis radiography (digital exposure and pulse fluoroscopy) were evaluated and compared to the standard screen-film method
Radiation dose was measured as dose area-product (DAP), entrance surface dose (ESD) and effective dose; image quality was assessed with a contrast-detail phantom.
Results concerning the possibility of dose reduction in diagnostic radiology through optimization of the radiographic process, are presented and discussed.
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