Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography
We investigated the relationships between radiation dose indices and body size indices in adult body computed tomography (CT). A total of 3200 CT scans of the thoracic, abdominal, abdominopelvic, or thoraco-abdominopelvic regions performed using one of four CT scanners were analyzed. Volume CT dose...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Tomography |
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| Online Access: | https://www.mdpi.com/2379-139X/9/4/110 |
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| author | Yusuke Inoue Hiroyasu Itoh Kazunori Nagahara Hirofumi Hata Kohei Mitsui |
| author_facet | Yusuke Inoue Hiroyasu Itoh Kazunori Nagahara Hirofumi Hata Kohei Mitsui |
| author_sort | Yusuke Inoue |
| collection | DOAJ |
| description | We investigated the relationships between radiation dose indices and body size indices in adult body computed tomography (CT). A total of 3200 CT scans of the thoracic, abdominal, abdominopelvic, or thoraco-abdominopelvic regions performed using one of four CT scanners were analyzed. Volume CT dose index (CTDIvol) and dose length product (DLP) were compared with various body size indices derived from CT images (water-equivalent diameter, WED; effective diameter, ED) and physical measurements (weight, weight/height, body mass index, and body surface area). CTDIvol showed excellent positive linear correlations with WED and ED. CTDIvol also showed high linear correlations with physical measurement-based indices, whereas the correlation coefficients were lower than for WED and ED. Among the physical measurement-based indices, weight/height showed the strongest correlations, followed by weight. Compared to CTDIvol, the correlation coefficients with DLP tended to be lower for WED, ED, and weight/height and higher for weight. The standard CTDIvol values at 60 kg and dose increase ratios with increasing weight, estimated using the regression equations, differed among scanners. Radiation dose indices closely correlated with body size indices such as WED, ED, weight/height, and weight. The relationships between dose and body size differed among scanners, indicating the significance of dose management considering body size. |
| first_indexed | 2024-03-10T23:31:18Z |
| format | Article |
| id | doaj.art-11694236368f405e853046ebf21bd693 |
| institution | Directory Open Access Journal |
| issn | 2379-1381 2379-139X |
| language | English |
| last_indexed | 2024-03-10T23:31:18Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
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| series | Tomography |
| spelling | doaj.art-11694236368f405e853046ebf21bd6932023-11-19T03:13:48ZengMDPI AGTomography2379-13812379-139X2023-07-01941381139210.3390/tomography9040110Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed TomographyYusuke Inoue0Hiroyasu Itoh1Kazunori Nagahara2Hirofumi Hata3Kohei Mitsui4Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara 252-0374, JapanDepartment of Radiology, Kitasato University Hospital, Sagamihara 252-0375, JapanDepartment of Radiology, Kitasato University Hospital, Sagamihara 252-0375, JapanDepartment of Radiology, Kitasato University Hospital, Sagamihara 252-0375, JapanDepartment of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara 252-0374, JapanWe investigated the relationships between radiation dose indices and body size indices in adult body computed tomography (CT). A total of 3200 CT scans of the thoracic, abdominal, abdominopelvic, or thoraco-abdominopelvic regions performed using one of four CT scanners were analyzed. Volume CT dose index (CTDIvol) and dose length product (DLP) were compared with various body size indices derived from CT images (water-equivalent diameter, WED; effective diameter, ED) and physical measurements (weight, weight/height, body mass index, and body surface area). CTDIvol showed excellent positive linear correlations with WED and ED. CTDIvol also showed high linear correlations with physical measurement-based indices, whereas the correlation coefficients were lower than for WED and ED. Among the physical measurement-based indices, weight/height showed the strongest correlations, followed by weight. Compared to CTDIvol, the correlation coefficients with DLP tended to be lower for WED, ED, and weight/height and higher for weight. The standard CTDIvol values at 60 kg and dose increase ratios with increasing weight, estimated using the regression equations, differed among scanners. Radiation dose indices closely correlated with body size indices such as WED, ED, weight/height, and weight. The relationships between dose and body size differed among scanners, indicating the significance of dose management considering body size.https://www.mdpi.com/2379-139X/9/4/110computed tomographyradiation dosebody sizeoptimization |
| spellingShingle | Yusuke Inoue Hiroyasu Itoh Kazunori Nagahara Hirofumi Hata Kohei Mitsui Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography Tomography computed tomography radiation dose body size optimization |
| title | Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography |
| title_full | Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography |
| title_fullStr | Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography |
| title_full_unstemmed | Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography |
| title_short | Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography |
| title_sort | relationships of radiation dose indices with body size indices in adult body computed tomography |
| topic | computed tomography radiation dose body size optimization |
| url | https://www.mdpi.com/2379-139X/9/4/110 |
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