The First Positron Emission Tomography-Magnetic Resonance Imaging in Hong Kong: Preliminary Experience
S Ka, G Lo, V Ai, P Au-Yeung, H Chan
Hong Kong J Radiol 2017;20:84-9
DOI: 10.12809/hkjr1716828
A new hybrid imaging modality that combines positron emission tomography (PET) and magnetic resonance imaging (MRI) has emerged as an alternative to a combination of PET and computed tomography (CT). PETMRI offers many advantages over PET-CT such as radiation dose reduction, superior contrast resolution, and the capability of multiparametric imaging. Our preliminary experience shows that PET-MRI can achieve reasonable workflow and scanning time. Compared with PET-CT, PET-MRI can provide comparable information with much less radiation (up to 77% reduction). It has a reasonable scan time (about 25 mins). In oncology, it has clear advantages in T- and M-staging. It is appropriate for tumour monitoring and surveillance owing to its reduced radiation dose.
Authors’ affiliation:
S Ka, G Lo, V Ai, P Au-Yeung, H Chan: Department of Diagnostic and Interventional Radiology, Hong Kong Sanatorium and Hospital, Happy Valley,
Hong Kong
中文摘要
香港第一台正電子發射斷層掃描 – 磁共振成像器：初步經驗
賈亦尊、羅吳美英、倪浩光、歐陽啟明、陳羲璘
結合正電子發射斷層掃描（PET）和磁共振成像（MRI）的混合成像（PET-MRI）已漸作為PET和計算機斷層掃描（CT）混合成像（PET-CT）的替代技術出現。PET-MRI有優於PET-CT的特點，例如輻射劑量減少、優異的對比度解析度和多參數成像的能力。我們的初步經驗表明，PET-MRI可以達到合理的工作流程和掃描時間。與PET-CT相比，PET-MRI能提供相似的資訊，但是輻射更少（高達77%的減少）。PET-MRI具有合理的掃描時間（約25分鐘）。在腫瘤學中，它在T和M分期中具有明顯的優勢。因其輻射劑量減少PET-MRI更適用於腫瘤監測。