A comparative assessment of entrance surface doses in analogue and digital radiography during common radiographic examinations

Abstract

Digital radiography is often performed at a higher dose rate than analogue radiography for image acquisition. The authors measured the Entrance Surface Dose (ESD) of analogue and digital radiography techniques for 14 radiographic examinations from randomly selected medical centres in the central district of Korea. It was that the mean ESD of the digital examinations was 2.84 mGy (range, 0.37-6.38 mGy) and that of the analogue examinations was 1.83 mGy (range, 0.38-4.74 mGy), resulting in a 55.25 % higher ESD for digital technique. Although this survey is not completely representative of Korea, findings of this study indicate a need for closer exposure management in digital radiography to minimise patient dose.

Patient dose measurement in common medical X-ray examinations and propose the first local dose reference levels to diagnostic radiology in Iran

“…There was no clear association between daily workload and patient doses. As Table 5 shows, the kVp values obtained in this study for pelvis examination were lower than those of obtained in the Korea (2007Korea ( , 2013, India, three the UK studies, EC and the previous studies which have been done in Iran (2007 and 2015) [3,5,24]. This is also true for abdomen examination if India and Iran (2007) studies be ignored [1].…”

“…Several patient dose surveys have been performed around the world during the past decades and comparison has been carried out on obtained results with DRLs (dose reference levels) reported by international legislative organizations like the IAEA (International Atomic Energy Agency) and EC (European Commission) [1][2][3][4][5][6]. Some developed countries have drawn up a comprehensive NDRLs (national dose reference levels) plan for X-ray examinations based on the ICRP (International Commission on Radiological Protection) recommendations [7,8] and try to update it regularly.…”

Proper Management of the Clinical Exposure Index Based on Body Thickness Using Dose Optimization Tools in Digital Chest Radiography: A Phantom Study

“…The radiographic system has evolved from the analog screen-film system to computed radiography (CR), which is considered to be a bridge that links the analog system to a fully digital system and digital radiography (DR) system, such as indirect/direct flat panel detector (FPD). Earlier, it was important to adjust an optimal exposure condition for obtaining proper image quality, as the radiological technologist cannot check the quality of the image until the film is developed due to the characteristics of the film/screen, such as the sensitivity [ 1 , 2 , 3 ]. However, digital radiography systems with wide dynamic range have made it possible to take radiographs of intended quality to introduce the post-image processing and lookup table, which can offer proper sensitivity of an image [ 2 , 3 , 4 ].…”

“…Digital image processing can provide convenience to both the operator and patients, but there is a concern that a digital radiographic system can increase the exposure dose [ 2 ]. Previous studies have revealed that radiological technologists tend to take a radiograph with a higher exposure dose to avoid re-examination.…”

Monte Carlo simulation-based feasibility study of novel indirect flat panel detector system for removing scatter radiation

“…The recent trend in plain radiography is away from film/screen systems and toward digital systems such as storage phosphor systems and indirect/direct flat panel detectors (FPDs) [4]. The grid struc-ture has been used to remove scatter radiation in film/screen systems since the early 1900s [5] and in digital radiography without any new innovative changes except for using a different interspace material and high-density grids.…”