Survey of patients’ CT radiation dose in Jiangsu Province

Zhou, Yuanyuan; Chen, Yang; Cao, Xingjiang; Du, Xiang; Yu, Nian; Zhou, Xianfeng; Zhu, Baoli; Wang, Jin

doi:10.21037/phe.2016.11.06

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…And we compared the DRLs (Q3) of CTDI vol and DLP in our study with those in other researches or guidelines published in previous, including DRLs from the United States of America (13), UK (15), Japan (18), and China's Jilin (19) and Jiangsu (20) Province. The results are shown in Figures 1 and 2 [Zhou et al's (20) study did not provide DRLs of CTDI vol .…”

Section: Comparison With Other Drlsmentioning

confidence: 99%

“…In China, although the national standard of DRLs for adults in CT scans has been issued by the National Health Commission (27), there are still few studies on dose data of a large sample of patients or multicenter and cross-regional studies. Zhou et al (20) and Zhou et al (19) investigated radiation dose data from CT scans in Jiangsu and Jilin provinces of China to help establish their local DRLs, but these studies did not collect data of singlephase and multi-phase scans separately. Multiphase scans, including angiography and contrast-enhanced scans, often have higher radiation doses than plain scans because they require separate scans before and after contrast injections.…”

Section: Comparison With Other Drlsmentioning

confidence: 99%

See 1 more Smart Citation

Radiation doses in CT examinations from the West China Hospital, Sichuan University and setting local diagnostic references levels

Li¹,

Zhang²,

Xia³

et al. 2020

Ann Transl Med

View full text Add to dashboard Cite

Background: Our study aims to summarize the data of radiation doses collected from consecutive CT examinations by using the Radiometrics software and contributing to the establishment of the region's diagnostic reference levels (DRLs). Methods:The radiation doses in 158,463 CT examinations performed on 106,275 adults between April 2017 and April 2019 were retrospectively analyzed. The median value and interquartile range (IQR) of volumetric CT dose index (CTDIvol), dose-length product (DLP), effective dose (ED), and size-specific dose estimate (SSDE) were calculated according to the scanning region.Results: The median CTDIvol (mGy) for each scanning region was 42.3 (head), 6.2 (chest), and 9.0 (abdomen). The median DLPs (mGy.cm) for single-phase, multi-phase, and all examinations were as follows:

show abstract

Section: Comparison With Other Drlsmentioning

confidence: 99%

Section: Comparison With Other Drlsmentioning

confidence: 99%

Radiation doses in CT examinations from the West China Hospital, Sichuan University and setting local diagnostic references levels

Li¹,

Zhang²,

Xia³

et al. 2020

Ann Transl Med

View full text Add to dashboard Cite

show abstract

“…The k-factor is defined as the proportionality constant between the effective dose and the DLP. In the clinical setting, the DLP is understood to be the product of the CTDIvol and the scan length: where the k is k-factor (mSv mGy-1 cm-1), E is effective dose (mSv), DLP is dose-length product (mGy cm), CTDIvol is in mGy and l is the scan length (cm) for different scan types (Zhou et al, 2017). The k-factors used to date were initially developed by Shrimpton et al using computational phantoms (Shrimpton, PC, Hillier MC, 2014).…”

Section: Introductionmentioning

confidence: 99%

Association of Radiation Doses and Cancer Risks from CT Pulmonary Angiography Examinations in Relation to Body Effective Diameter

Harun¹,

Karim²,

Abbas³

et al. 2020

Preprint

View full text Add to dashboard Cite

This study aims to evaluate the patient's dose exposure from Computed Tomography Pulmonary Angiography (CTPA) examination and to estimates the cancer risk induced from the examinations based on the patient's size. One hundred patients were recruited, and data information was collected retrospectively. A multi-detector (MDCT) (Philips Brilliance 128, USA) scanner were utilized for the CTPA examination, and dose data were obtained from the system. The effective diameter of each subjects' image was measured for the Size-specific dose estimates (SSDEs). All subjects divided into Group 1 (19 -25 cm), Group 2 (25-28 cm) and Group 3 (28-38 cm), where the association between gender were analysed.Effective dose (E), SSDE, organ dose and cancer risk of each group were evaluated and compared statistically using independent t-test and one-way ANOVA. The range of mean CTDIvol, DLP and E values were (6.44 -17.42 mGy), (239 -631 mGy), (5.19 -13.90 mSv), respectively. In respective with the patient's effective diameter, the mean SSDE value for Group 1, Group 2 and Group 3 were 9.93 ± 3.89 mGy, 13.70 ± 9.04 mGy and 22.29 ± 7.35 mGy. The organ dose and cancer risk attained for breast, lung and liver were 17.05 ± 10.40 mGy (194 per one million procedure), 17.55 ± 10.86 mGy (192 per one million procedure) and 15.04 ± 9.75 mGy (53 per one million procedure), respectively. Lung and breast with more massive patient's effective diameter received the highest dose exposure which increases the probability of the cancer risk. CTDIvol was found to be underestimated, and SSDE provides more accurate in describing the radiation dose and cancer risk. Body effective diameter found to be significant on the estimation except for gender. Therefore, it is essential to apply optimised protocols in order to reduce patient's exposure during CTPA examination.

show abstract

Survey of patients’ CT radiation dose in Jiangsu Province

Cited by 2 publications

References 0 publications

Radiation doses in CT examinations from the West China Hospital, Sichuan University and setting local diagnostic references levels

Radiation doses in CT examinations from the West China Hospital, Sichuan University and setting local diagnostic references levels

Association of Radiation Doses and Cancer Risks from CT Pulmonary Angiography Examinations in Relation to Body Effective Diameter

Contact Info

Product

Resources

About