Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage
Abstract Background To study radiation dose, image quality and low-contrast cylinder detectability from multislice CT (MSCT) abdomen by using low tube voltage using the American College of Radiology (ACR) phantom. The ACR phantom (low-contrast module) was scanned with 64 MSCT scanner (Brilliance, Ph...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-11-01
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| Series: | The Egyptian Journal of Radiology and Nuclear Medicine |
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| Online Access: | https://doi.org/10.1186/s43055-021-00613-y |
| _version_ | 1818834200866848768 |
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| author | A. Mokhtar Z. A. Aabdelbary A. Sarhan H. M. Gad M. T. Ahmed |
| author_facet | A. Mokhtar Z. A. Aabdelbary A. Sarhan H. M. Gad M. T. Ahmed |
| author_sort | A. Mokhtar |
| collection | DOAJ |
| description | Abstract Background To study radiation dose, image quality and low-contrast cylinder detectability from multislice CT (MSCT) abdomen by using low tube voltage using the American College of Radiology (ACR) phantom. The ACR phantom (low-contrast module) was scanned with 64 MSCT scanner (Brilliance, Philips Medical System, Eindhoven, Netherlands) with 80 and 120 KVP, utilizing different tube current time product (mAs) range from 50 to 380 mAs. The image noise (SD), signal to noise ratio, contrast-to-noise ratio (CNR), and scores of low contrast detectability were assessed for every image respectively. Results From images analyses, the noise essentially increased with the use of low tube voltage. The CNR was 0.94 ± 0.27 at 120 KVP, and CNR was 0.43 ± 0.22 at 80 KVP. However, with the same dose, there were no differences of statistical significance in scores of low-contrast detectability between 120 KVP at 300mAs and 80 KVP at (200–380) mAs (p > 0.05). At 300 mAs, the CTDIvol obtained at 80 KVP was about 29% of that at 120 KVP. The CTDIvol obtained at 80 KVP were decreased from 5% at 50 mAs, to 37% at 380 mAs. Conclusions There is a possibility to decrease exposure of radiation virtually by reducing KVP from 120 to 80 KVP in examination of abdominal CT when the high tube current is used, though increasing image noise at low tube voltage. |
| first_indexed | 2024-12-19T02:31:03Z |
| format | Article |
| id | doaj.art-aca2c517777d4b37b04fe1be4beb8a64 |
| institution | Directory Open Access Journal |
| issn | 2090-4762 |
| language | English |
| last_indexed | 2024-12-19T02:31:03Z |
| publishDate | 2021-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | The Egyptian Journal of Radiology and Nuclear Medicine |
| spelling | doaj.art-aca2c517777d4b37b04fe1be4beb8a642022-12-21T20:39:40ZengSpringerOpenThe Egyptian Journal of Radiology and Nuclear Medicine2090-47622021-11-015211710.1186/s43055-021-00613-yStudies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltageA. Mokhtar0Z. A. Aabdelbary1A. Sarhan2H. M. Gad3M. T. Ahmed4Radiology Department, Urology and Nephrology Center, Mansoura UniversityPhysics Department, Faculty of Science, Mansoura UniversityRadiology Department, Urology and Nephrology Center, Mansoura UniversityRadiology Department, Urology and Nephrology Center, Mansoura UniversityPhysics Department, Faculty of Science, Mansoura UniversityAbstract Background To study radiation dose, image quality and low-contrast cylinder detectability from multislice CT (MSCT) abdomen by using low tube voltage using the American College of Radiology (ACR) phantom. The ACR phantom (low-contrast module) was scanned with 64 MSCT scanner (Brilliance, Philips Medical System, Eindhoven, Netherlands) with 80 and 120 KVP, utilizing different tube current time product (mAs) range from 50 to 380 mAs. The image noise (SD), signal to noise ratio, contrast-to-noise ratio (CNR), and scores of low contrast detectability were assessed for every image respectively. Results From images analyses, the noise essentially increased with the use of low tube voltage. The CNR was 0.94 ± 0.27 at 120 KVP, and CNR was 0.43 ± 0.22 at 80 KVP. However, with the same dose, there were no differences of statistical significance in scores of low-contrast detectability between 120 KVP at 300mAs and 80 KVP at (200–380) mAs (p > 0.05). At 300 mAs, the CTDIvol obtained at 80 KVP was about 29% of that at 120 KVP. The CTDIvol obtained at 80 KVP were decreased from 5% at 50 mAs, to 37% at 380 mAs. Conclusions There is a possibility to decrease exposure of radiation virtually by reducing KVP from 120 to 80 KVP in examination of abdominal CT when the high tube current is used, though increasing image noise at low tube voltage.https://doi.org/10.1186/s43055-021-00613-yMultislice CTRadiation doseImage qualityCT ACR phantom |
| spellingShingle | A. Mokhtar Z. A. Aabdelbary A. Sarhan H. M. Gad M. T. Ahmed Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage The Egyptian Journal of Radiology and Nuclear Medicine Multislice CT Radiation dose Image qualityCT ACR phantom |
| title | Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage |
| title_full | Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage |
| title_fullStr | Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage |
| title_full_unstemmed | Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage |
| title_short | Studies on the radiation dose, image quality and low contrast detectability from MSCT abdomen by using low tube voltage |
| title_sort | studies on the radiation dose image quality and low contrast detectability from msct abdomen by using low tube voltage |
| topic | Multislice CT Radiation dose Image qualityCT ACR phantom |
| url | https://doi.org/10.1186/s43055-021-00613-y |
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