Research output per year
Research output per year
Peter Heide Pedersen, Asger Greval Petersen, Svend Erik Østgaard, Torben Tvedebrink, Søren P. Eiskjær
Research output: Contribution to journal › Journal article › Research › peer-review
STUDY DESIGN: A comparative study of radiation dose measured in anthropomorphic phantoms.
OBJECTIVES: First, to report the first organ dose and effective dose measurements in anthropomorphic phantoms using the new EOS imaging micro-dose protocol in full-spine examinations. Next, to compare these measurements of radiation dose to measurements in the EOS standard-dose protocol and CR.
SUMMARY OF BACKGROUND DATA: Few studies evaluating organ dose and effective dose for the EOS low-dose scanner exists, and mainly for the standard-dose protocol. To the best of our knowledge, no studies of effective dose based on anthropomorphic phantom measurements exits for the new micro-dose protocol.
METHODS: Two anthropomorphic phantoms, representing a 5-year-old (pediatric) and a 15-year-old (adolescent). The phantoms were exposed to EOS micro-dose and standard-dose protocols during full-spine imaging. Additionally, CR in scoliosis settings was performed. For all modalities, organ doses were measured and effective doses were calculated using thermoluminescent dosimeters (TLD).
RESULTS: We found a 17-fold reduction (94%) of effective dose in micro-dose protocol compared with our CR system in the adolescent phantom. Micro-dose versus standard-dose protocol, showed a 6-fold reduction (83%), and for standard-dose versus our CR system a 2.8-fold reduction (64%) reduction of effective dose was observed.For the pediatric phantom, a 5-fold reduction (81%) of effective dose in micro-dose protocol compared to our CR system was observed. Micro-dose versus standard-dose protocol, showed a 7-fold (86%) reduction. However, we observed an increase in absorbed dose of 38% when comparing the EOS standard-dose protocol with our CR system.
CONCLUSIONS: The EOS imaging micro-dose option exposes patients to lower radiation doses than any currently available modality for full-spine examination. Expected reduction of dose was established for the adolescent phantom when comparing CR and standard-dose protocol. However, no reduction of effective dose with EOS standard-dose protocol compared to our reference CR system was observed in the pediatric phantom.
LEVEL OF EVIDENCE: N/A.
Original language | English |
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Journal | Spine |
Volume | 43 |
Issue number | 22 |
Pages (from-to) | E1313–E1321 |
Number of pages | 9 |
ISSN | 0362-2436 |
DOIs | |
Publication status | Published - 15 Nov 2018 |
Research output: PhD thesis