Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography
<strong><em>Introduction:</em></strong> Digital radiography possesses a wide dynamic range and has a major advantage in producing an acceptable image of diagnostic value even though overexposure occurs. Lumbar spine (LS) radiography is the most common examinations that gives...
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Mashhad University of Medical Sciences
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doaj-74cc239521fe41139c1ffba41bb239fe2020-11-24T21:40:13ZengMashhad University of Medical SciencesIranian Journal of Medical Physics2345-36722345-36722019-09-0116536837110.22038/ijmp.2018.34167.143111841Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital RadiographyHanis Aisyah Ramli0Soo-Foon Moey1Department of Diagnostic Imaging and Radiotherapy, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuantan, PahangInternational Islamic University Malaysia<strong><em>Introduction:</em></strong> Digital radiography possesses a wide dynamic range and has a major advantage in producing an acceptable image of diagnostic value even though overexposure occurs. Lumbar spine (LS) radiography is the most common examinations that gives high radiation dose to patients and accounts for the highest collective population dose of any conventional radiographic examinations. As such, this study was carried out to ascertain the impact of image quality and entrance surface dose (ESD) with different exposure settings in the anteroposterior (AP) and lateral LS. <strong><em>Material and Methods:</em></strong> The torso of the PBU-50 phantom was exposed to medium and high kilovoltage peak (kVp). A total of 14 images for LS were obtained. Relative image quality was assessed using Leeds Test Objects TOR CDR whilst the ESD was ascertained using an optically stimulated luminescence dosimeter. <strong><em>Results:</em></strong> The results of Friedman test indicated a significant difference in image quality when using medium and high kVp. Wilcoxon signed-rank test also reflected a significant difference in ESD between the use of medium and high kVp for both AP and lateral LS. <strong><em>Conclusion: </em></strong>Significant differences in image quality and ESD were obtained using medium and high kVp with medium kVp resulting in high contrast but low contrast sensitivity and vice versa. The findings of the present study indicated that the recommended kVp for AP LS was from 75kVp to 81kVp whilst for lateral LS the recommended kVp was from 85kVp to 90kVp for an average adult patient.http://ijmp.mums.ac.ir/article_11841_3306b92c18a28a3f51924704d1a732ee.pdfDigital RadiographyImage QualityRadiation Dosagelumbar spine |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hanis Aisyah Ramli Soo-Foon Moey |
spellingShingle |
Hanis Aisyah Ramli Soo-Foon Moey Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography Iranian Journal of Medical Physics Digital Radiography Image Quality Radiation Dosage lumbar spine |
author_facet |
Hanis Aisyah Ramli Soo-Foon Moey |
author_sort |
Hanis Aisyah Ramli |
title |
Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography |
title_short |
Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography |
title_full |
Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography |
title_fullStr |
Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography |
title_full_unstemmed |
Effects of Kilovoltage on Image Quality and Entrance Surface Dose in Lumbar Spine Digital Radiography |
title_sort |
effects of kilovoltage on image quality and entrance surface dose in lumbar spine digital radiography |
publisher |
Mashhad University of Medical Sciences |
series |
Iranian Journal of Medical Physics |
issn |
2345-3672 2345-3672 |
publishDate |
2019-09-01 |
description |
<strong><em>Introduction:</em></strong> Digital radiography possesses a wide dynamic range and has a major advantage in producing an acceptable image of diagnostic value even though overexposure occurs. Lumbar spine (LS) radiography is the most common examinations that gives high radiation dose to patients and accounts for the highest collective population dose of any conventional radiographic examinations. As such, this study was carried out to ascertain the impact of image quality and entrance surface dose (ESD) with different exposure settings in the anteroposterior (AP) and lateral LS.
<strong><em>Material and Methods:</em></strong> The torso of the PBU-50 phantom was exposed to medium and high kilovoltage peak (kVp). A total of 14 images for LS were obtained. Relative image quality was assessed using Leeds Test Objects TOR CDR whilst the ESD was ascertained using an optically stimulated luminescence dosimeter.
<strong><em>Results:</em></strong> The results of Friedman test indicated a significant difference in image quality when using medium and high kVp. Wilcoxon signed-rank test also reflected a significant difference in ESD between the use of medium and high kVp for both AP and lateral LS.
<strong><em>Conclusion: </em></strong>Significant differences in image quality and ESD were obtained using medium and high kVp with medium kVp resulting in high contrast but low contrast sensitivity and vice versa. The findings of the present study indicated that the recommended kVp for AP LS was from 75kVp to 81kVp whilst for lateral LS the recommended kVp was from 85kVp to 90kVp for an average adult patient. |
topic |
Digital Radiography Image Quality Radiation Dosage lumbar spine |
url |
http://ijmp.mums.ac.ir/article_11841_3306b92c18a28a3f51924704d1a732ee.pdf |
work_keys_str_mv |
AT hanisaisyahramli effectsofkilovoltageonimagequalityandentrancesurfacedoseinlumbarspinedigitalradiography AT soofoonmoey effectsofkilovoltageonimagequalityandentrancesurfacedoseinlumbarspinedigitalradiography |
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