|
|
|
| Reference value of surface radiation dose of digital radiography among adults in Beilun District |
| ZHANG Qun1, ZHANG Dandan2, WANG Aihong1, QU Lingyan1, HU Qunxiong3, WANG Xueying3
|
1. Department of Environmental and Occupational Health, Ningbo Center for Disease Control and Prevention, Ningbo, Zhejiang 315010, China;
2. Ningbo Center for Disease Control and Prevention, Ningbo, Zhejiang 315010, China;
3. Beilun Center for Disease Control and Prevention, Ningbo, Zhejiang 315800, China |
|
|
|
|
Abstract Objective To investigate the reference level of surface radiation dose of digital radiography (DR) among adult examinees in Beilun District, Ningbo City, so as to provide insights into the optimization of the parameters of DR systems and rational management of the radiation dose. Methods Based on the cloud imaging system covering 14 DR systems in 11 public hospitals in Beilun District, the diagnosis of adults receiving DR and DR systems check were collected from May 2020 to April 2021. The air kerma-area product ( PKA ) was selected as a measure, and the local diagnostic reference level ( LDRL ), the regional median dose ( RMD ), the regional lowest dose predicted level ( LDPL ) and the typical dose in the DR imaging room were defined using the quartile method according to the examination site, projection direction and radiography positions. The PKA value was transformed into incident air kerma ( Ka, e ), and compared with the recommended value in the Requirements for Radiological Protection in Diagnostic Radiology ( GBZ 130-2020 ). Results DR was performed among 133 065 person-times from May 2020 through April 2021 in Beilun District. The greatest RMD was found on abdomen AP DR in the supine position ( 120 μGy·m2 ), and the lowest RMD was seen on chest PA DR in the standing position ( 17 μGy·m2 ). The maximums of typical dose in the DR imaging room on chest PA ( 33 vs. 30 μGy·m2 ), abdomen AP ( 161 vs. 153 μGy·m2 ) and pelvis AP DR ( 164 vs. 162 μGy·m2 ) were greater than LDRL in the supine position, and the minimums of typical dose on chest PA ( 10 vs. 11 μGy·m2 ) and chest LAT DR ( 33 vs. 34 μGy·m2 ) were lower than LDPL in the standing position. Following transformation into Ka, e, the LDRL ranged from 0.27 to 3.80 mGy, and the maximums of typical dose ranged from 0.25 to 3.55 mGy, which was much lower than the recommended dose proposed in the national criteria. Conclusions The reference level of surface radiation dose of DR is established among adults in Beilun District, which is lower than the recommended dose in the national criteria of China. Such a reference level may be employed by medical institutions for optimization of the parameters of DR systems.
|
|
Received: 27 October 2021
Revised: 07 January 2022
Published: 13 April 2022
|
|
|
|
|
|
[1] VAÑÓ E,MILLER D L,MARTIN C J,et al.ICRP Publication 135:diagnostic reference levels in medical imaging[J].Ann ICRP,2017,46(1):1-144.
[2] 中华人民共和国国家卫生健康委员会.放射诊断放射防护要求:GBZ 130—2020[S]. 北京:人民卫生出版社,2020.
National Health Commission of the People's Republic of China. Requirements for radiological protection in diagnostic radiology:GBZ 130-2020[S]. Beijing:People's Medical Publishing House,2020.
[3] RAMPADO O,GARELLI E,ZATTERI R,et al.Patient dose evaluation by means of DICOM images for a direct radiography system[J].Radiol Med,2008,113(8):1219-1228.
[4] BRADY S L,KAUFMAN R A.Estimating pediatric entrance skin dose from digital radiography examination using DICOM metadata:a quality assurance tool[J].Med Phys,2015,42(5):2489-2497.
[5] 张丹丹,章群,陈斌,等.基于DICOM文件的数字化X射线摄影入射体表剂量计算值与热释光测读值的比较[J].中华放射医学与防护杂志,2018,38(10):787-791.
ZHANG D D,ZHANG Q,CHEN B,et al.Comparison of digital radiography's entrance surface doses computed from DICOM file or directly from TLDs[J].Chin J Radiol Med Prot,2018,38(10):787-791.
[6] 王鹏程. 放射物理与辐射防护[M].北京:人民卫生出版社,2009.
WANG P C.Radiation physics and radiation protection[M].Beijing:People's Medical Publishing House,2009.
[7] 国家技术监督局.中国成年人人体尺寸:GB 10000—1988[S].北京:中国标准出版社,1988.
The State Bureau of Quality and Technical Supervision. Human dimensions of Chinese adults:GB 10000-1988[S].Beijing:Standards Press of China,1988.
[8] ZARGHANI H,TOOSSI M.Local diagnostic reference levels for some common diagnostic X-ray examinations in Sabzevar county of Iran[J].Iran J Med Phys,2018,15(1):62-65.
[9] KANDA R,AKAHANE M,KOBA Y,et al.Developing diagnostic reference levels in Japan[J].Jpn J Radiol,2021,39(4):307-314.
[10] HART D,HILLIER M C,WALL B F .Doses to patients from radiographic and fluoroscopic X-ray imaging procedures in the UK-2005 Review[R/OL].(2007-08-01)[2022-01-07].http://europepmc.org/article/CTX/c3150.
[11] 赵洪波,曲良勇,张沉石,等.DR摄片管电压与影像质量和辐射剂量的相关性研究[J].医疗卫生装备,2013,34(5):108-110.
ZHAO H B,QU L Y,ZHANG C S,et al.Effects of kV on image quality and radiation dose for digital radiography[J].Chin Med Equip J,2013,34(5):108-110.
[12] HYEMIN P,YONGSU Y,JUNGMIN K,et al.Use of clinical exposure index and deviation index based on national diagnostic reference level as dose-optimization tools for general radiography in Korea[J].Radiat Prot Dosimetry,2020,191(4):439-451. |
|
|
|
