Effect of using immobilization device in fluoroscopic study in pediatric patient: Focused on radiation dose reduction in voiding cystourethrogram

Autoři: Hyun-Hae Cho aff001;  So Mi Lee aff002;  Sun Kyoung You aff003
Působiště autorů: Department of Radiology, Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea aff001;  Department of Radiology, Kyungpook National University Hospital, Daegu, Republic of Korea aff002;  Department of Radiology, Chungnam National University Hospital, Daejeon, Republic of Korea aff003
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article
doi: 10.1371/journal.pone.0224063



To prove objective effect of using mechanical device for immobilization of pediatric patient during voiding cystourethrogram (VCUG) compare immobilization by hand-holding.


This study included 77 patients, who underwent VCUG in our center from April to October 2017, who had a clinically suspicious urinary tract infection. Patients were classified into one of two groups based on whether examination was done before (Group A) or after (Group B) adaptation of immobilization device. Patient-related data, image quality related score and dose-related data were collected and compared between two groups.


Group A included 36 patients and group B included 41. Patient related data including mean age, sex, body weight and height didn’t show significant difference between two groups (p > 0.05 for all). Among the image quality scoring, overall image quality, motion artifact, showed significant difference between two groups with improved inadequate timing and centering after adaptation of immobilization device. Dose related data showed significantly decreased shot number, mean fluoroscopic time with decreased mean dose area product (DAP) value and effective dose after adaptation of immobilization device (p < 0.05 for all).


Adaptation of immobilization device can improve overall image quality with decreased motion artifact and improved centering and timing with even shot number, mean fluoroscopic time with decreased mean DAP value and effective dose.

Klíčová slova:

Body weight – Bone imaging – Catheters – Image processing – Pediatrics – Urinary tract infections – Urine – Radiation exposure


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2019 Číslo 10