THE CONSISTENCY OF EXPOSURE INDICATOR VALUES IN DIGITAL RADIOGRAPHY SYSTEMS

Radiation Protection Dosimetry
A JamilN M Zain

Abstract

After years of establishment of computed radiography (CR) and digital radiography (DR), manufacturers have introduced exposure indicator/index (EI) as a feedback mechanism for patient dose. However, EI consistency is uncertain for CR. Most manufacturers recommended EI values in a range of numbers for all examination, instead of giving the exact range for a specific body part, raising a concern of inappropriate exposure given to the patient in clinical practice. The aims of this study were to investigate the EI consistency in DR systems produced in constant exposure parameters and clinical condition, and to determine the interaction between the anatomical part and EI. A phantom study of skull, chest, abdomen and hand was carried out and four systems were used for comparison-Fuji CR, Carestream CR, Siemens DR and Carestream DR. For each projection, the phantom positioning and exposure parameters were set according to the standard clinical practice. All exposure parameters and clinical conditions were kept constant. Twenty (20) exposures were taken for each projection and the EI was recorded. Findings showed that EI is not consistent in DR systems despite constant exposure parameters and clinical condition except in Siemens DR, th...Continue Reading

Citations

May 22, 2019·Radiation Protection Dosimetry·Helle PrechtMartin Weber Kusk
Nov 16, 2020··Farida WahyuniDionysius J. D. H. Santjojo

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