Abdollahi, H. and Shiri, I. and Salimi, Y. and Sarebani, M. and Mehdinia, R. and Deevband, M.R. and Mahdavi, S.R. and Sohrabi, A. and Bitarafan-Rajabi, A. (2016) Radiation dose in cardiac SPECT/CT: An estimation of SSDE and effective dose. European Journal of Radiology, 85 (12). pp. 2257-2261.
Full text not available from this repository.Abstract
Aims The dose levels for Computed Tomography (CT) localization and attenuation correction of Single Photon Emission Computed Tomography (SPECT) are limited and reported as Volume Computed Tomography Dose Index (CTDIvol) and Dose-Length Product (DLP). This work presents CT dose estimation from Cardiac SPECT/CT based on new American Association of Physicists in Medicine (AAPM) Size Specific Dose Estimation (SSDE) parameter, effective dose, organ doses and also emission dose from nuclear issue. Material and methods Myocardial perfusion SPECT/CT for 509 patients was included in the study. SSDE, effective dose and organ dose were calculated using AAPM guideline and Impact-Dose software. Data were analyzed using R and SPSS statistical software. Spearman-Pearson correlation test and linear regression models were used for finding correlations and relationships among parameters. Results The mean CTDIvol was 1.34 mGy ± 0.19 and the mean SSDE was 1.7 mGy ± 0.16. The mean ± SD of effective dose from emission, CT and total dose were 11.5 ± 1.4, 0.49 ± 0.11 and 12.67 ± 1.73 (mSv) respectively. The mean ± SD of effective dose from emission, CT and total dose were 11.5 ± 1.4, 0.49 ± 0.11 and 12.67 ± 1.73 (mSv) respectively. The spearman test showed that correlation between body size and organ doses is significant except thyroid and red bone marrow. CTDIvol was strongly dependent on patient size, but SSDE was not. Emission dose was strongly dependent on patient weight, but its dependency was lower to effective diameter. Conclusion The dose parameters including CTDIvol, DLP, SSDE, effective dose values reported here are very low and below the reference level. This data suggest that appropriate CT acquisition parameters in SPECT/CT localization and attenuation correction are very beneficial for patients and lowering cancer risks. © 2016 Elsevier Ireland Ltd
| Item Type: | Article |
|---|---|
| Additional Information: | cited By 0 |
| Subjects: | WG Cardiovascular System |
| Depositing User: | eprints admin |
| Date Deposited: | 16 Jul 2018 06:57 |
| Last Modified: | 29 Nov 2022 11:06 |
| URI: | http://eprints.iums.ac.ir/id/eprint/2924 |
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