SU-E-I-15: Comparison of Radiation Dose for Radiography and EOS in Adolescent Scoliosis Patients

Journal Article · Sun Jun 01 00:00:00 EDT 2014 · Medical Physics

DOI:https://doi.org/10.1118/1.4887963· OSTI ID:22325269

Schueler, B; Walz-Flannigan, A ^[1]

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1. Mayo Clinic, Rochester, MN (United States)

Purpose: To estimate patient radiation dose for whole spine imaging using EOS, a new biplanar slot-scanning radiographic system and compare with standard scoliosis radiography. Methods: The EOS imaging system (EOS Imaging, Paris, France) consists of two orthogonal x-ray fan beams which simultaneously acquire frontal and lateral projection images of a standing patient. The patient entrance skin air kerma was measured for each projection image using manufacturer-recommended exposure parameters for spine imaging. Organ and effective doses were estimated using a commercially-available Monte Carlo simulation program (PCXMC, STUK, Radiation and Nuclear Safety Authority, Helsinki, Finland) for a 15 year old mathematical phantom model. These results were compared to organ and effective dose estimated for scoliosis radiography using computed radiography (CR) with standard exposure parameters obtained from a survey of pediatric radiographic projections. Results: The entrance skin air kerma for EOS was found to be 0.18 mGy and 0.33 mGy for posterior-anterior (PA) and lateral projections, respectively. This compares to 0.76 mGy and 1.4 mGy for CR, PA and lateral projections. Effective dose for EOS (PA and lateral projections combined) is 0.19 mSv compared to 0.51 mSv for CR. Conclusion: The EOS slot-scanning radiographic system allows for reduced patient radiation dose in scoliosis patients as compared to standard CR radiography.

• OSTI ID: 22325269
• Journal Information: Medical Physics, Vol. 41, Issue 6; Other Information: (c) 2014 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-2405
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
60 APPLIED LIFE SCIENCES
ADOLESCENTS
AIR
BEAMS
BLOWERS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
COMPUTERIZED TOMOGRAPHY
FRANCE
IMAGES
KERMA
MANUFACTURERS
MARINE SURVEYS
MONTE CARLO METHOD
PATIENTS
PEDIATRICS
PHANTOMS
PUBLIC OPINION
RADIATION DOSES
RADIATION PROTECTION
SKIN
VERTEBRAE
X RADIATION