Results 211 to 220 of about 241,427 (245)
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Conversion From Dose Length Product to Effective Dose for the CT Component of Whole-Body PET/CT
Annals of Nuclear Medicine, 2022For dose management of CT, the ratio of effective dose (ED) to dose length product (DLP) is often used to convert DLP to ED. We evaluated this ratio in the CT component of whole-body PET/CT performed under various imaging conditions to determine a practical method for ED estimation applicable to PET/CT.In total, 400 patients who underwent whole-body ...
Yusuke Inoue, Kazunori Nagahara
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CT Effective Dose per Dose Length Product Using ICRP 103 Weighting Factors
Medical Physics, 2011Purpose:To generate effective dose per unit dose length product (E/DLP) conversion factors incorporating ICRP Publication 103 tissue weighting factors.Methods:Effective doses for CT examinations were obtained using theIMPACT Dosimetry Calculator using all 23 dose data sets that are offered by this spreadsheet.
Walter Huda, Wenjun He
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Journal of Radiological Protection, 2022
Abstract For radiation dose assessment of computed tomography (CT), effective dose (ED) is often estimated by multiplying the dose-length product (DLP), provided automatically by the CT scanner, by a conversion factor. We investigated such conversion in CT venography of the lower extremities performed in conjunction with CT pulmonary ...
Yusuke Inoue +4 more
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Abstract For radiation dose assessment of computed tomography (CT), effective dose (ED) is often estimated by multiplying the dose-length product (DLP), provided automatically by the CT scanner, by a conversion factor. We investigated such conversion in CT venography of the lower extremities performed in conjunction with CT pulmonary ...
Yusuke Inoue +4 more
openaire +2 more sources
Effective Dose and Dose-Length Product in CT
Radiology, 2009Lynne M Hurwitz, Philip C Goodman
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American Journal of Roentgenology, 2015
The purpose of this study is to show how to calculate effective dose in CT using size-specific dose estimates and to correct the current method using dose-length product (DLP).Data were analyzed from 352 chest and 241 abdominopelvic CT images. Size-specific dose estimate was used as a surrogate for organ dose in the chest and abdominopelvic regions ...
Samuel L Brady, Robert A. Kaufman
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The purpose of this study is to show how to calculate effective dose in CT using size-specific dose estimates and to correct the current method using dose-length product (DLP).Data were analyzed from 352 chest and 241 abdominopelvic CT images. Size-specific dose estimate was used as a surrogate for organ dose in the chest and abdominopelvic regions ...
Samuel L Brady, Robert A. Kaufman
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Oral Radiology, 2023
The use of dental cone-beam CT (CBCT) has increased in recent years. We aimed to calculate the organ and effective doses in dental CBCT using Monte Carlo simulation (MCS) and to correlate the effective dose with the dose-length product (DLP), which is a radiation dose index.Organ and effective doses were calculated by MCS using the adult male and ...
Shingo Terashima +5 more
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The use of dental cone-beam CT (CBCT) has increased in recent years. We aimed to calculate the organ and effective doses in dental CBCT using Monte Carlo simulation (MCS) and to correlate the effective dose with the dose-length product (DLP), which is a radiation dose index.Organ and effective doses were calculated by MCS using the adult male and ...
Shingo Terashima +5 more
openaire +2 more sources
Canadian Association of Radiologists Journal, 2013 Iain D C Kirkpatrick, Idris A Elbakri
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Medical Imaging 2021: Physics of Medical Imaging, 2021
The dosimetry of cone beam computed tomography (CBCT) is not fully elaborated yet, and some of these systems presents dose-area-product (DAP) values after an examination rather than, as in the case of traditional CT, the doselength- product (DLP). The purpose of this study was to provide a reproducible and straight-forward method for DLP measurements ...
Veronica Fransson, Anders Tingberg
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The dosimetry of cone beam computed tomography (CBCT) is not fully elaborated yet, and some of these systems presents dose-area-product (DAP) values after an examination rather than, as in the case of traditional CT, the doselength- product (DLP). The purpose of this study was to provide a reproducible and straight-forward method for DLP measurements ...
Veronica Fransson, Anders Tingberg
openaire +1 more source
Dose-Length Product of Scanners Correlates With DNA Damage in Patients Undergoing Contrast CT
European Journal of Radiology, 2012Computed tomography (CT) exams contribute for a large part to the population's radiation burden. This study addresses the question if dose settings of scanners expressed by dose-length product (DLP) are correlated with directly measurable biological effects in patients.DLP, blood dose, effective dose and DNA damage were analyzed for patients undergoing
Anne Vral, Peter Smeets, Hubert Thierens
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