Korean Journal of Radiology

  • 제15권6호
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  • Pages.739-745
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  • 2014
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  • 1229-6929(pISSN)
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  • 2005-8330(eISSN)
대한영상의학회 (The Korean Society of Radiology)
권호 표지
DOI QR코드

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Comparison of Image Quality of Shoulder CT Arthrography Conducted Using 120 kVp and 140 kVp Protocols

  • Ahn, Se Jin (Department of Radiology, Seoul National University College of Medicine) ;
  • Hong, Sung Hwan (Department of Radiology, Seoul National University College of Medicine) ;
  • Chai, Jee Won (Department of Radiology, Boramae Medical Center) ;
  • Choi, Ja-Young (Department of Radiology, Seoul National University College of Medicine) ;
  • Yoo, Hye Jin (Department of Radiology, Seoul National University College of Medicine) ;
  • Kim, Sae Hoon (Department of Orthopedic Surgery, Seoul National University College of Medicine) ;
  • Kang, Heung Sik (Department of Radiology, Seoul National University College of Medicine)
  • 투고 : 2014.02.03
  • 심사 : 2014.07.23
  • 발행 : 2014.12.01
⟨ 이전 논문 다음 논문 ⟩

초록

Objective: To compare the image quality of shoulder CT arthrography performed using 120 kVp and 140 kVp protocols. Materials and Methods: Fifty-four CT examinations were prospectively included. CT scans were performed on each patient at 120 kVp and 140 kVp; other scanning parameters were kept constant. Image qualities were qualitatively and quantitatively compared with respect to noise, contrast, and diagnostic acceptability. Diagnostic acceptabilities were graded using a one to five scale as follows: 1, suboptimal; 2, below average; 3, acceptable; 4, above average; and 5, superior. Radiation doses were also compared. Results: Contrast was better at 120 kVp, but noise was greater. No significant differences were observed between the 120 kVp and 140 kVp protocols in terms of diagnostic acceptability, signal-to-noise ratio, or contrast-to-noise ratio. Lowering tube voltage from 140 kVp to 120 kVp reduced the radiation dose by 33%. Conclusion: The use of 120 kVp during shoulder CT arthrography reduces radiation dose versus 140 kVp without significant loss of image quality.

키워드

참고문헌

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