Evaluation of radiation dose of triple rule-out coronary angiography protocols with different scan length using 256-slice CT
Tsai C.-J.1; Lee J.J.S.1; Chen L.-K.2,3; Mok G.S.P.4,5; Hsu S.-M.6; Wu T.-H.1
2011-10-01
Source PublicationNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ISSN01689002
Volume652Issue:1Pages:771-774
Abstract

Triple rule-out coronary CT angiography (TRO-CTA) is a new approach for providing noninvasive visualization of coronary arteries with simultaneous evaluation of pulmonary arteries, thoracic aorta and other intrathoracic structures. The increasing use of TRO-CTA examination with longer scan length is associated with the concerns about radiation dose and their corresponding cancer risk. The purpose of this study is to evaluate organ dose and effective dose for the TRO-CTA examination with 2 scan lengths: TRO and TRO, using 256-slice CT. TRO-CTA examinations were performed on a 256-slice CT scanner without ECG-based tube current modulation. Absorbed organ doses were measured using an anthropomorphic phantom and thermal-luminance dosimeters (TLDs). Effective dose was determined by taking a sum of the measured absorbed organ doses multiplied with the tissue weighting factor based on ICRP-103, and compared to that calculated using the dose-length product (DLP) method. We obtained high organ doses in the thyroid, esophagus, breast, heart and lung in both TRO-CTA protocols. Effective doses of the TRO and TRO protocols with the phantom method were 26.37 and 42.49 mSv, while those with the DLP method were 19.68 and 38.96 mSv, respectively. Our quantitative dose information establishes a relationship between radiation dose and scanning length, and can provide a practical guidance to best clinical practice. © 2010 Elsevier B.V.

KeywordAcute Coronary Syndrome Radiation Dose Triple Rule-out Ct Angiography
DOI10.1016/j.nima.2010.09.100
URLView the original
Indexed BySCI
WOS Research AreaInstruments & Instrumentation ; Nuclear Science & Technology ; Physics
WOS SubjectInstruments & Instrumentation ; Nuclear Science & Technology ; Physics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000295765000186
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University, 155 Li-Nong St., Sec. 2, Taipei 112, Taiwan
2.Department of Radiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
3.College of Medicine, Fu Jen Catholic University, Taipei, Taiwan
4.Department of Electrical and Electronics Engineering, Faculty of Science and Technology, University of Macau, Macau
5.Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong
6.Department of Biomedical Imaging and Radiological Science, China Medical University No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan
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GB/T 7714
Tsai C.-J.,Lee J.J.S.,Chen L.-K.,et al. Evaluation of radiation dose of triple rule-out coronary angiography protocols with different scan length using 256-slice CT[J]. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment,2011,652(1):771-774.
APA Tsai C.-J.,Lee J.J.S.,Chen L.-K.,Mok G.S.P.,Hsu S.-M.,&Wu T.-H..(2011).Evaluation of radiation dose of triple rule-out coronary angiography protocols with different scan length using 256-slice CT.Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment,652(1),771-774.
MLA Tsai C.-J.,et al."Evaluation of radiation dose of triple rule-out coronary angiography protocols with different scan length using 256-slice CT".Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 652.1(2011):771-774.
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