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推进肺部PET-CT的快速获取:通过减少F-FDG活动和扫描时间来优化协议

K M Bedair¹, S I Hammoury², M H Moustafa³

¹Medical Biophysics Department, Medical Research Institute, Alexandria University, 5433005 Alexandria, Egypt; Medical Physics and Radiotherapy Department, Ayady Almostakbal Oncology Hospital, 5411401 Alexandria, Egypt.

Radiography (London, England : 1995)

|February 28, 2026

概括

优化氧葡萄糖 (F-FDG) PET-CT扫描用于肺癌 (LC) 患者是可能的,获得时间更短. 半剂量66秒的每次床位方案平衡了效率和诊断性能.

科学领域:

核医学是一种核医学.
在瘤学瘤学.
放射学放射学是指放射学

背景情况:

肺癌 (LC) 在全球范围内是一个重大的健康问题,诊断和分期严重依赖于F-FDG PET-CT.
目前的PET-CT协议可以优化以提高效率和患者安全,而不会影响诊断准确度.

研究的目的:

评估缩短获取持续时间对半剂量F-FDG PET-CT在肺癌患者的诊断性能的影响.
为了确定最佳的扫描持续时间,以平衡效率,安全性和诊断质量.

主要方法:

有望招募30名新诊断的肺癌患者.
使用50%剂量的F-FDG (1.85 MBq/kg),然后进行PET-CT成像.
在每次床位 (s/bp) 获得50,66和120秒的数据集的回顾性重建,以评估损伤对比率 (TLR,TSR,TBR).

主要成果:

F-FDG PET-CT扫描缩短了获取时间 (66秒/秒),维持了肺癌病变的稳定SUV_max值.
较长的获取持续时间 (66 和 120 s/bp) 改善了瘤对比率 (TLR,TSR,TBR),提高了诊断信心.
瘤与背景比率 (TBR) 显示出高可靠性和近乎完美的协议在收购持续时间,作为一个强大的指标.

结论:

缩短半剂量F-FDG PET-CT获取对于肺癌分期是可行的.
减少F-FDG剂量的66s/bp协议在扫描效率,患者安全和诊断性能之间提供了最佳平衡.
这种优化方案适用于常规的临床瘤实践,特别是对于需要频繁成像的患者.

关键词:

收购时间收购时间暴露暴露暴露氧正酸盐 (LSO) 晶体探测器辐射安全辐射安全放射性标记物 ((18) F-FDG) 的使用飞行时间 (ToF)

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