Experimental measurement of radiation dose in a dedicated breast CT system
Shen SW(申善威); Wang YF(王燕芳); Shu H(舒航); Shen, SW; Wang, YF; Shu, H; Tang, X; Wei, CF; Song, YS; Shi, RJ; Wei, L; 唐晓(核); Wei CF(魏存峰); Shi RJ(史戎坚); Wei L(魏龙)
Source PublicationCHINESE PHYSICS C
AbstractRadiation dose is an important performance indicator of a dedicated breast CT (DBCT). In this paper, the method of putting thermoluminescent dosimeters (TLD) into a breast shaped PMMA phantom to study the dose distribution in breasts was improved by using smaller TLDs and a new half-ellipsoid PMMA phantom. Then the weighted CT dose index (CTDIw) was introduced to average glandular assessment in DBCT for the first time and two measurement modes were proposed for different sizes of breasts. The dose deviations caused by using cylindrical phantoms were simulated using the Monte Carlo method and a set of correction factors were calculated. The results of the confirmatory measurement with a cylindrical phantom (11 cm/8 cm) show that CTDIw gives a relatively conservative overestimate of the average glandular dose comparing to the results of Monte Carlo simulation and TLDs measurement. But with better practicability and stability, the CTDIw is suitable for dose evaluations in daily clinical practice. Both of the TLDs and CTDIw measurements demonstrate that the radiation dose of our DBCT system is lower than conventional two-view mammography.
Keyworddedicated breast CT radiation dose experimental measurement
Subject AreaPhysics
Indexed BySCI ; ADS
WOS IDWOS:000332920700017
ADS Bibcode2014ChPhC..38c8201S
ADS URLhttps://ui.adsabs.harvard.edu/abs/2014ChPhC..38c8201S
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2014ChPhC..38c8201S/citations
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Cited Times:0 [ADS]
Document Type期刊论文
Recommended Citation
GB/T 7714
Shen SW,Wang YF,Shu H,et al. Experimental measurement of radiation dose in a dedicated breast CT system[J]. CHINESE PHYSICS C,2014,38(3):38201.
APA 申善威.,王燕芳.,舒航.,Shen, SW.,Wang, YF.,...&魏龙.(2014).Experimental measurement of radiation dose in a dedicated breast CT system.CHINESE PHYSICS C,38(3),38201.
MLA 申善威,et al."Experimental measurement of radiation dose in a dedicated breast CT system".CHINESE PHYSICS C 38.3(2014):38201.
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