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Evaluation of the Usefulness of Digital Tomosynthesis in the Chest

흉부영역에서 디지털 토모신테시스의 유용성 평가

  • 장동혁 (이대목동병원 영상의학과) ;
  • 심성신 (이대목동병원 영상의학과) ;
  • 최재욱 (고려대학교 예방의학과) ;
  • 최준구 (극동대학교 방사선학과)
  • Received : 2012.08.01
  • Accepted : 2012.09.17
  • Published : 2012.10.28

Abstract

To evaluate the usefulness of tomosynthesis in the chest area, simple radiograph, low-dose CT, and tomosynthesis examinations were performed, and their absorbed doses were compared, and finally the images were evaluated. The absorbed dose recorded with the simple Radiograph examination was $0.33{\pm}0.27$ mGy, that of low-dose CT $1.26{\pm}0.56$ mGy, and that of tomosynthesis $0.55{\pm}0.02$ mGy, which indicate significance differences in absorbed doses among the examinations(p<0.001). Based on the evaluations of the images, The simple radiograph scores were $1.66{\pm}0.72$, $1.61{\pm}0.63$, and $1.57{\pm}0.73$, respectively; low-dose CT scores were $2.92{\pm}0.26$, $2.91{\pm}0.29$, and $2.88{\pm}0.32$, respectively; and tomosynthesis scores were $2.69{\pm}0.51$, $2.76{\pm}0.43$, and $2.66{\pm}0.61$, respectively. That is, there were statistically significant differences among the examinations(p<0.001), although there was no significant difference between low-dose CT and tomosynthesis examinations. Therefore, tomosynthesis is judged to be a useful examination that can minimize radiation doses to patients during chest examinations and enhance diagnostic efficacy.

Keywords

Absorbed Dose;Low-dose Computed Tomography;Chest Simple Radiograph;Tomosynthesis

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