PATIENT DOSE ASSESSMENT AND OPTIMISATION OF PELVIC RADIOGRAPHY WITH COMPUTED RADIOGRAPHY SYSTEMS-Reference-Cited by-同舟云学术

PATIENT DOSE ASSESSMENT AND OPTIMISATION OF PELVIC RADIOGRAPHY WITH COMPUTED RADIOGRAPHY SYSTEMS

Published:2021-06 Issue:1 Volume:195 Page:41-49
ISSN:0144-8420
Container-title:Radiation Protection Dosimetry
language:en
Short-container-title:

Author:

Abbeyquaye D¹²,Inkoom S¹³,Hammond N B¹⁴,Fletcher J J¹⁵,Botwe B O⁶

Affiliation:

1. Department of Medical Physics, School of Nuclear and Allied Sciences, University of Ghana, Atomic Energy Campus, P.O. Box AE 1, Atomic Energy-Accra, Ghana

2. Department of Biomedical Engineering Technology, Faculty of Health and Allied Sciences, Koforidua Technical University, P.O. Box KF-981, Koforidua, Ghana

3. Radiation Protection and Consultancy Centre, Radiation Protection Institute, Ghana Atomic Energy Commission, P.O. Box LG 80, Legon-Accra, Ghana

4. Department of Nuclear Medicine, National Centre for Radiotherapy and Nuclear Medicine, Korle-Bu Teaching Hospital, P.O. Box 77, Accra, Ghana

5. Department of Applied Physics, Faculty of Applied Sciences, University for Development Studies, Navrongo Campus, Upper East Region, P.O. Box TL 1350, Tamale, Ghana

6. Department of Radiography, School of Biomedical and Allied Health Science, College of Health Sciences, University of Ghana, P.O. Box KB143, Korle-Bu Campus, Accra, Ghana

Abstract

Abstract Digital radiography systems can reduce radiation dose, this capability was harnessed to explore dose and image quality (IQ) optimisation strategies. Entrance surface dose (ESD), effective dose (ED) and organ doses were determined by the indirect method for patients undergoing pelvic anteroposterior X-ray examinations with computed radiography systems. The IQ of patients’ radiographs was assessed in terms of signal-to-noise ratio (SNR). An anthropomorphic phantom was exposed with varying tube potential (kVp), tube current-time product (mAs), and focus-to-detector distance (FDD) to determine phantom-entrance dose for the optimisation studies. SNR of each phantom radiograph was determined. Patients’ mean ESD of 2.38 ± 0.60 mGy, ED of 0.25 ± 0.07 mSv and SNR of 8.5 ± 2.2 were obtained. After optimisation, entrance dose was reduced by 29.2% with 5 cm increment in FDD, and 5 kVp reduction in tube potential. kVp and/or mAs reduction with an increment in FDD reduced entrance dose without adversely compromising radiographic-IQ.

Publisher

Oxford University Press (OUP)

Subject

Public Health, Environmental and Occupational Health,Radiology Nuclear Medicine and imaging,General Medicine,Radiation,Radiological and Ultrasound Technology

Link

http://academic.oup.com/rpd/article-pdf/195/1/41/39738384/ncab111.pdf

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