Radiation dose levels of thoracic-lumbar spine CT in pediatric trauma patients and assessment of scan parameters for dose optimization.
Pediatr Radiol
; 52(1): 65-74, 2022 Jan.
Article
en En
| MEDLINE
| ID: mdl-34651195
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 ANDMETHODS:
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.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Columna Vertebral
/
Tomografía Computarizada por Rayos X
Tipo de estudio:
Guideline
/
Observational_studies
Límite:
Child
/
Child, preschool
/
Humans
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Infant
/
Newborn
Idioma:
En
Revista:
Pediatr Radiol
Año:
2022
Tipo del documento:
Article
País de afiliación:
Turquía