Year: 2001
Type: article
Abstract: A new method was investigated to estimate patient dose by the use of a digital imaging system such as a computed radiography system. With this method, the patient dose was assumed to be comparable to the absorbed dose at the directly irradiated region of a detector. Two approaches were examined based on the histrogram of image data and also the image indices of a digital imaging system such as S and L of a computed radiography system for estimating the absorbed dose. The correlation coefficient between the actual patient dose calculated from the exposure condition for chest radiography and the estimated patient dose by use of histogram data was very high(R=0.943). Estimated patient dose calculated by use of image indices S and L showed a relatively low correlation coefficient(R=0.789). Although this method provides a rough estimation, we believe that it can be useful as a simple and practical way to monitor patient dose during routine examinations using a digital imaging system.
Institutions: Osaka City University Hospital, University of Chicago
Language: English
Topic: Radiation Dose and Imaging
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
OpenAlex ID: W2734482804