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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제51권 제6호
발행연도
2019.1
수록면
1,610 - 1,615 (6page)

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Positron emission tomography (PET)/magnetic resonance (MR) scanning has the advantage of lessadditional exposure to radiation than does PET/computed tomography (CT). In particular, MR basedattenuation correction (MR AC) can greatly affect the image quality of PET and is frequently obtainedusing various MR sequences. Thus, the purpose of the current study was to quantitatively compare theimage quality between MR non-AC (MR NAC) and MR AC in PET images with three MR sequences. Percent image uniformity (PIU), percent contrast recovery (PCR), and percent background variability(PBV) were estimated to evaluate the quality of PET images with MR AC. Based on the results of PIU, 15.2%increase in the average quality was observed for PET images with MR AC than for PET images with MRNAC. In addition, 28.6% and 71.1% improvement in the average results of PCR and PBV respectively, wasobserved for PET images with MR AC compared with that with MR NAC. Moreover, no significant differencewas observed among the average values using three MR sequences. In conclusion, the currentstudy demonstrated that PET with MR AC improved the image quality and can be help diagnosis in all MRsequence cases.

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