AffiliationNorth Western Medical Physics, Christie Hospital, Withington, Manchester, UK.
MetadataShow full item record
AbstractDoses from CT examinations are difficult to estimate. However, they are requested more frequently due to the increase in CT examinations. In particular, fetal dose estimations are frequently required for patients who have discovered, subsequent to the examination, that they were pregnant when the examination was conducted. A computer model has been developed to facilitate such dose calculations. This model combines empirical beam data with anatomical information. The model has been verified using thermoluminescent dosemeter (TLD) readings of internal and surface dose from both phantoms and patients, including intrauterine doses for patients undergoing afterloading gynaecological intracavitary treatment. Although only limited experimental data were available, the results indicate that the model accurately predicts uterine doses within acceptable errors. This approach has been validated for fetal dose estimation. The model was also used in a comparison with the nationally available CT dose data from the National Radiological Protection Board (NRPB). The two models were found to be in agreement for fetal dose estimations.
CitationEstimation of fetal and effective dose for CT examinations. 1997, 70:272-8 Br J Radiol
JournalBritish Journal of Radiology
- 16-detector multislice CT: dosimetry estimation by TLD measurement compared with Monte Carlo simulation.
- Authors: Groves AM, Owen KE, Courtney HM, Yates SJ, Goldstone KE, Blake GM, Dixon AK
- Issue date: 2004 Aug
- Estimation of fetal radiation dose from computed tomography scanning in late pregnancy: depth-dose data from routine examinations.
- Authors: Damilakis J, Perisinakis K, Voloudaki A, Gourtsoyiannis N
- Issue date: 2000 Sep
- Practical CT dosimetry.
- Authors: Yoshizumi TT, Suneja SK, Teal JS
- Issue date: 1989 Jul-Aug
- Determination of potential uterine (conceptus) doses from axial and helical CT scans.
- Authors: Dietrich MF, Miller KL, King SH
- Issue date: 2005 Feb
- NCICT: a computational solution to estimate organ doses for pediatric and adult patients undergoing CT scans.
- Authors: Lee C, Kim KP, Bolch WE, Moroz BE, Folio L
- Issue date: 2015 Dec