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Frontiers of Medicine

ISSN 2095-0217

ISSN 2095-0225(Online)

CN 11-5983/R

Postal Subscription Code 80-967

2018 Impact Factor: 1.847

Front Med    2013, Vol. 7 Issue (4) : 506-509    https://doi.org/10.1007/s11684-013-0294-y
RESEARCH ARTICLE
An investigation on patient dose in screen-film diagnostic radiology in Lhasa City, Xizang Autonomous Region, China
Xiang Du()
Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, China
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Abstract

This study aimed to investigate patient dose in diagnostic screen-film radiographic examinations in the city of Lhasa, China. Seven out of the twenty-six hospitals registered with the Lhasa Health Bureau were included in the investigation. The entrance surface air Kerma (ESAK) of seven conventional screen-film radiology X-ray equipment in these hospitals was measured with a QA dosimeter in September 2012. The X-ray examinations were divided into three categories: PA (posterior-anterior) chest, upper/lower limb, and AP (anterior-posterior) lumbar spine. For each category, ESAKs were calculated and analyzed. The mean ESAK was 0.6 mGy for PA chest, 0.3 mGy for upper/lower limb, and 1.8 mGy for AP lumbar spine. In addition, the mean ESAK value recorded for PA chest X-ray examinations exceeded the corresponding value recommended by the International Atomic Energy Agency (0.4 mGy).

Keywords radiation dosage      radiology      radiation protection      radiography/statistics & numerical data     
Corresponding Author(s): Du Xiang,Email:xiang_du@126.com   
Issue Date: 05 December 2013
 Cite this article:   
Xiang Du. An investigation on patient dose in screen-film diagnostic radiology in Lhasa City, Xizang Autonomous Region, China[J]. Front Med, 2013, 7(4): 506-509.
 URL:  
https://academic.hep.com.cn/fmd/EN/10.1007/s11684-013-0294-y
https://academic.hep.com.cn/fmd/EN/Y2013/V7/I4/506
GroupsHospital scale
Above 300 patients per dayBelow 300 patients per day
Population hospitals4 (15.4%)22 (84.6%)
Sample hospitals1 (14.3%)6 (85.7%)
Tab.1  Proportion of hospitals with different scales in population and sample hospitals
GroupsGeographic distribution
City regionCounty
Population hospitals19 (73.1%)7 (26.9%)
Sample hospitals4 (57.1%)3 (42.9%)
Tab.2  Proportion of hospitals with different distributions in population and sample hospitals
GroupsHospital scale
GovernmentPrivate
Population hospitals19 (73.1%)7 (26.9%)
Sample hospitals5 (71.4%)2 (28.6%)
Tab.3  Proportion of hospitals with different attributions in population and sample hospitals
Examination categoriesMedian25% Values75% ValuesMeanSDRangeIAEA recommendation
PA chest0.50.20.80.60.50.1-1.50.4
Upper /lower limb0.10.10.40.30.30.04-0.7
AP lumbar spine1.51.02.31.81.00.9-3.610
Tab.4  ESAK calculation results in seven sampling hospitals (mGy)
HospitalExamination categoriesExamination conditionsESAK (mGy)FSD (cm)
Tube voltage (kV)PIt (mA·s)
Lhasa Maternal and Child Care HospitalPA chest80601.5100
Upper/lower limb80300.7100
AP lumbar spine801202.9100
Lhasa People’s HospitalPA chest80100.9100
Upper/lower limb8080.4100
AP lumbar spine80201.8100
Dangxiong County People’s HospitalPA chest72280.8100
Upper/lower limb72150.4100
AP lumbar spine72561.5100
Qushui County People’s HospitalPA chest52500.3100
Upper/lower limb50200.1100
AP lumbar spine64600.9100
Duilongdeqing County People’s HospitalPA chest65250.5100
Upper/lower limb5012.50.1100
AP lumbar spine751253.6100
Houbei HospitalPA chest8050.1100
Upper/lower limb6350.1100
AP lumbar spine84321.0100
Houlan HospitalPA chest706.30.1100
Upper/lower limb5550.04100
AP lumbar spine75321.0100
Tab.5  Characteristics and ESAK results of the radiological procedures
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