Affiliation:
1. Department of Radiology, Children\'s Hospital of Chongqing Medical University, Chongqing 400014, China | Ministry
of Education Key Laboratory of Child Development and Disorders, Chongqing 400014, China | National Clinical
Research Center for Child Health and Disorders, Chongqing 400014, China | China International Science and Technology
Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China | Chongqing Key
Laboratory of Pediatrics, Chongqing 400014, China
2. Department of Radiology, Children\'s Hospital of Chongqing Medical University, Chongqing 400014, China
Abstract
Background:
Until now few studies have specially validated whether the sex, body
mass index, or imaging projections of pediatric patients undergoing chest Digital Radiography
(DR) affect the radiation dose and image quality.
Introduction:
To investigate the impact of different photography positions on radiation dose for
and image quality of chest DR for 3-4-year-old children.
Method:
One-hundred twenty 3-4-year-old patients who required chest DR were included. The patients
were divided into 3 groups, with 40 patients in each group: supine Anterior-Posterior Projection
(APP), standing APP and posterior-anterior projection (PAP). The Dose Area Product (DAP)
and Entrance Surface Dose (ESD) values for every patient were recorded after each exposure. The
Visual Grading Analysis Score (VGAS) was used to evaluate image quality.
Result:
The DAP and ESD values for the standing PAP and APP groups were significantly lower
than those for the supine APP group (0.19 ± 0.04 dGy cm2 and 0.05 ± 0.01 mGy vs. 0.25 ± 0.05
dGy cm2 and 0.08 ± 0.01 mGy, P<0.05, respectively). Additionally, the VGAS for the standing
APP group was significantly lower than those for the standing PAP and supine APP groups (28.58
± 0.96 vs. 29.08 ± 0.94 and 29.03 ± 0.80, P<0.05, respectively), whereas the pulmonary field area
for the standing PAP group was significantly higher than those for the standing and supine APP
groups (118.95 ± 16.81 cm2vs. 105.65 ± 14.76 cm2 and 105.24 ± 16.32 cm2, P<0.05, respectively).
However, there were no statistically significant differences in DAP, ESD, VGAS, pulmonary field
area and body mass index between the male and female patients in the three groups (P>0.05, respectively).
Conclusion:
The standing PAP should be the first projection choice for chest DR for 3-4-year-old
children; compared with the supine and standing APP, the standing PAP may improve image quality
and decrease the required radiation dose.
Funder
Chongqing Science and Technology Commission
Publisher
Bentham Science Publishers Ltd.
Subject
Radiology, Nuclear Medicine and imaging
Cited by
1 articles.
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