Scoliosis imaging: An analysis of radiation risk in the CT scan projection radiograph and a comparison with projection radiography and EOS: An analysis of radiation risk in the CT scan projection radiograph and a comparison with projection radiography and EOS

F. Alrehily*, P. Hogg, M. Twiste, S. Johansen, A. Tootell

*Corresponding author for this work

Research output: Contribution to journalArticle (journal)peer-review

15 Citations (Scopus)

Abstract

Introduction: Scoliosis is defined as a deformity of the spine with lateral curvature in the coronal plane. It requires regular X-ray imaging to monitor the progress of the disorder, therefore scoliotic patients are frequently exposed to radiation. It is important to lower the risk from these exposures for young patients. The aim of this work is to compare organ dose (OD) values resulting from Scan Projection Radiograph (SPR) mode in CT against projection radiography and EOS® imaging system when assessing scoliosis. Methods: A dosimetry phantom was used to represent a 10-year old child. Thermoluminescent dosimetry detectors were used for measuring OD. The phantom was imaged with CT in SPR mode using 27 imaging parameters; projection radiography and EOS machines using local scoliosis imaging procedures. Imaging was performed in anteroposterior, posteroanterior and lateral positions. Results: 17 protocols delivered significantly lower radiation dose than projection radiography (p < 0.05). OD values from the CT SPR imaging protocols and projection radiography were statistically significant higher than the results from EOS. No statistically significant differences in OD were observed between 10 imaging protocols and those from projection radiography and EOS imaging protocols (p > 0.05). Conclusion: EOS has the lowest dose. Where this technology is not available we suggest there is a potential for OD reduction in scoliosis imaging using CT SPR compared to projection radiography.

Original languageEnglish
Pages (from-to)e68-e74
JournalRadiography
Volume25
Issue number3
DOIs
Publication statusPublished - 31 Aug 2019

Keywords

  • CT
  • Dose measurements
  • EOS
  • Radiation protection
  • Scoliosis
  • TLD

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