Radiation Exposure in Fluoroscopy of the Shoulder: A Comparison between Mini and Conventional C-arm Image Intensifier
Direk Tantigate MD*, Kongkhet Riansuwan MD*, Waiwit Sanguanwongwan MD*, Banchong Mahaisavariya MD*
Affiliation : * Department of Orthopedic Surgery and Rehabilitation, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
Objective : To compare the radiation exposure of the primary surgeon while using the conventional c-arm and mini c-arm
fluoroscopy at the shoulder.
Material and Method: Twelve shoulders of six fresh cadavers were used to simulate this experimental study. Radiation
exposure of the primary surgeon was measured at the head and neck region. The average radiation dose was measured using
both the conventional c-arm and mini c-arm, then the findings were compared.
Results : Mean radiation energy of the conventional c-arm was significantly lower than the mini c-arm at 59.39+1.43 kV and
70.58+4.01 kV, respectively (p<0.001). Dose rates to which the primary surgeon was exposed from the conventional c-arm
and the mini c-arm were 81.46+30.37 μSv/hour and 87.54+43.69 μSv/hour, respectively. However, the difference was not
statistically significant (p = 0.875).
Conclusion : There is no difference in the level of radiation safety for the primary surgeon when using the conventional c-arm
vs. the mini c-arm for a fluoroscopic-assisted shoulder procedure. Therefore, selection of the methodology should be based
on equipment availability and clinical considerations.
Keywords : Radiation, Exposure, Fluoroscopy, Shoulder, Mini c-arm
