PET 검사에서 CT 장비의 차이에 따른 PET/CT의 SUV 비교 평가

• 영문명: The Comparison Evaluation of SUV Using Different CT Devices in PET/CT Scans
• 발행기관: 대한핵의학기술학회
• 저자명: 김우현(Woo Hyun Kim) 고현수(Hyeon Soo Go) 이정은(Jeong Eun Lee) 김호성(Ho Sung Kim) 류재광(Jae Kwang Ryu) 정우영(Woo Young Jung)
• 간행물 정보: 『핵의학기술』Vol.18 No.1, 10~18쪽, 전체 9쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2014.05.30

영문 초록

Purpose: Among different PET/CT devices which are composed of same PET model but different CT models, SUV, usually used for quantitative evaluation, was measured to assess the accuracy of follow up scans in different PET/CT and confirm that interequipment compatibility is useful in arranging the PET/CT exam appointment. Materials and Methods: Using ACR PET Phantom, PET NEMA IEC Body Phantom, SNM Chest Phantom and Ge-68 cylinder Phantom, SUVₘₑₐₙ and SUVₘₐₓ was measured by 3 different models of PET/CT (Discovery 690, Discovery 690Elite and Discovery 710, GE) made in same company. ANOVA was used to evaluate the significant difference in the result. Results: In the result, the average of SUVₘₐₓ was D690 (25 mm-1.82, 16 mm-1.75, 12 mm-1.73, 8 mm-1.44), D690E (25 mm-1.76, 16 mm-1.92, 12 mm-1.78, 8 mm-1.55) and D710 (25 mm-1.84, 16 mm-1.89, 12 mm-1.77, 8 mm-1.61) in ACR Phantom, D690 (25 mm-2.26, 16 mm-2.25, 12 mm-1.92, 8 mm-1.85), D690E (25 mm-2.45, 16 mm-2.25, 12 mm-2.05 8 mm-1.91) and D710(25 mm-2.49, 16 mm-2.20, 1 2mm-2.30, 8 mm-2.05) in PET NEMA IEC Body Phantom, D690-1.04, D690E-1.10 and D710-1.09 in SNM Chest Phantom and D690-0.81, D690E-0.81, D710-0.84 in Ge-68 cylinder Phantom. The differences between average SUV of 4 phantoms were SUVₘₑₐₙ-1.87%, SUVₘₐₓ-2.15%. And also as a result of ANOVA analysis, there was no significant difference statistically. Conclusion: If different models of PET/CT have same specification of PET system, there was no significant difference in SUVₘₑₐₙ and SUVₘₐₓ even though they have different CT system. And also differences of SUVₘₑₐₙ and SUVₘₐₓ in phantom images were under 5% which many manufacturers recommend. Therefore, follow up scan will be possible using different PET/CT if it has same specification of PET system with the previous PET/CT. This information will enable the accurate comparative analysis when conducting follow up scans and be helpful to schedule PET/CT exam more effectively.

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키워드

PET/CT SUV OptimaTM CT 660 LightSpeedTM VCT BrightSpeedTM Elite