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- Title
Radiation dose levels of thoracic–lumbar spine CT in pediatric trauma patients and assessment of scan parameters for dose optimization.
- Authors
Arslan, Sevtap; Onur, Mehmet Ruhi; Sarıkaya, Yasin; Özcan, H. Nursun; Haliloğlu, Mithat; Akata, Deniz
- Abstract
Background: CT is frequently used for assessing spinal trauma in children. Objective: To establish the local diagnostic reference levels of spine CT examinations in pediatric spinal trauma patients and analyze scan parameters to enable dose optimization. Materials and methods: In this retrospective study, we included 192 pediatric spinal trauma patients who underwent spine CT. Children were divided into two age groups: 0–10 years (group 1) and 11–17 years (group 2). Each group was subdivided into thoracic, thoracolumbar and lumbar CT groups. CT acquisition parameters (tube potential, in kilovoltage [kV]; mean tube current–time product, in milliamperes [mAs]; reference mAs; collimated slice width; tube rotation time; pitch; scan length) and radiation dose descriptors (volume CT dose index [CTDIvol] and dose–length product [DLP]) were recorded. The CTDIvol and DLP values of spine CTs obtained with different tube potential and collimated slice width values were compared for each group. Results: CTDIvol and DLP values of thoracolumbar spine CTs in group 1 and lumbar spine CTs in group 2 were significantly lower in CTs acquired with low tube potential levels (P<0.05). CTDIvol and DLP values of thoracolumbar spine CTs in both groups and lumbar spine CTs in group 2 acquired with high collimated slice width values were significantly lower than in corresponding CTs acquired with low collimated slice width values (P<0.05). Conclusion: Pediatric spine CT radiation doses can be notably reduced from the manufacturers' default protocols while preserving image quality.
- Subjects
CHILDREN'S injuries; RADIATION doses; SPINE; LUMBAR vertebrae; CONE beam computed tomography; SPINAL surgery; REFERENCE values; KRUSKAL-Wallis Test; ONE-way analysis of variance; RETROSPECTIVE studies; MANN Whitney U Test; T-test (Statistics); SPINAL injuries; DESCRIPTIVE statistics; COMPUTED tomography; DATA analysis software; THORACIC vertebrae; RADIATION dosimetry; CHILDREN; ADOLESCENCE
- Publication
Pediatric Radiology, 2022, Vol 52, Issue 1, p65
- ISSN
0301-0449
- Publication type
Article
- DOI
10.1007/s00247-021-05170-0