Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study
Background: To investigate lateral lumbar spine radiography technical parameters for reduction of effective dose whilst maintaining image quality (IQ). Methods: Thirty-six radiograms of an anthropomorphic phantom were acquired using different exposure parameters: source-to-detector distance (SDD)...
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| Format: | Journal Article |
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Springer
2020
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| Online Access: | http://hdl.handle.net/20.500.11937/78027 |
| _version_ | 1848763928121704448 |
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| author | Lai, Zer Hau Sa dos Reis, C. Sun, Zhonghua |
| author_facet | Lai, Zer Hau Sa dos Reis, C. Sun, Zhonghua |
| author_sort | Lai, Zer Hau |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Background: To investigate lateral lumbar spine radiography technical parameters for reduction of effective dose
whilst maintaining image quality (IQ).
Methods: Thirty-six radiograms of an anthropomorphic phantom were acquired using different exposure
parameters: source-to-detector distance (SDD) (100, 130 or 150 cm), tube potential (75, 85 or 95 kVp), tube current
× exposure time product (4.5, 9, 18 mAs) and additional copper (Cu) filter (no filter, 0.1-, 0.2-, or 0.3-mm thickness.
IQ was assessed using an objective approach (contrast-to-noise-ratio [CNR] calculation and magnification
measurement) and a perceptual approach (six observers); ED was estimated using the PCXMC 2.0 software.
Descriptive statistics, paired t test, and intraclass correlation coefficient (ICC) were used.
Results: The highest ED (0.022 mSv) was found with 100 cm SSD, 75 kVp, 18 mAs, and without Cu filter, whilst the
highest CNR (7.23) was achieved at 130 cm SSD, 75 kVp, 18 mAs, and without Cu filter. The lowest ED and CNR
were generated at 150 cm SDD, 95 kVp, 4.5 mAs, and 0.3-mm Cu filter. All observers identified the relevant
anatomical structures on all images with the lowest ED and IQ. The intra-observer (0.61–0.79) and inter-observer
(0.55–0.82) ICC ranged from moderate to excellent.
Conclusion: All relevant anatomical structures were identified on the lateral lumbar spine radiographs despite
using low-dose protocols. The lowest ED (0.002 mSv) was obtained with 150 cm SDD, 95 kVp, 4.5 mAs, and 0.3-mm
Cu filter. Further technical and clinical studies are needed to verify these preliminary findings |
| first_indexed | 2025-11-14T11:11:15Z |
| format | Journal Article |
| id | curtin-20.500.11937-78027 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:11:15Z |
| publishDate | 2020 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-780272021-03-08T03:59:48Z Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study Lai, Zer Hau Sa dos Reis, C. Sun, Zhonghua 1103 - Clinical Sciences Background: To investigate lateral lumbar spine radiography technical parameters for reduction of effective dose whilst maintaining image quality (IQ). Methods: Thirty-six radiograms of an anthropomorphic phantom were acquired using different exposure parameters: source-to-detector distance (SDD) (100, 130 or 150 cm), tube potential (75, 85 or 95 kVp), tube current × exposure time product (4.5, 9, 18 mAs) and additional copper (Cu) filter (no filter, 0.1-, 0.2-, or 0.3-mm thickness. IQ was assessed using an objective approach (contrast-to-noise-ratio [CNR] calculation and magnification measurement) and a perceptual approach (six observers); ED was estimated using the PCXMC 2.0 software. Descriptive statistics, paired t test, and intraclass correlation coefficient (ICC) were used. Results: The highest ED (0.022 mSv) was found with 100 cm SSD, 75 kVp, 18 mAs, and without Cu filter, whilst the highest CNR (7.23) was achieved at 130 cm SSD, 75 kVp, 18 mAs, and without Cu filter. The lowest ED and CNR were generated at 150 cm SDD, 95 kVp, 4.5 mAs, and 0.3-mm Cu filter. All observers identified the relevant anatomical structures on all images with the lowest ED and IQ. The intra-observer (0.61–0.79) and inter-observer (0.55–0.82) ICC ranged from moderate to excellent. Conclusion: All relevant anatomical structures were identified on the lateral lumbar spine radiographs despite using low-dose protocols. The lowest ED (0.002 mSv) was obtained with 150 cm SDD, 95 kVp, 4.5 mAs, and 0.3-mm Cu filter. Further technical and clinical studies are needed to verify these preliminary findings 2020 Journal Article http://hdl.handle.net/20.500.11937/78027 10.1186/s41747-019-0132-3 http://creativecommons.org/licenses/by/4.0/ Springer fulltext |
| spellingShingle | 1103 - Clinical Sciences Lai, Zer Hau Sa dos Reis, C. Sun, Zhonghua Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study |
| title | Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study |
| title_full | Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study |
| title_fullStr | Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study |
| title_full_unstemmed | Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study |
| title_short | Effective dose and image optimisation of lateral lumbar spine radiography: a phantom study |
| title_sort | effective dose and image optimisation of lateral lumbar spine radiography: a phantom study |
| topic | 1103 - Clinical Sciences |
| url | http://hdl.handle.net/20.500.11937/78027 |