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数据驱动的GatingFDG PET/CT对腹部区域的有效性

Ryoma Ito¹, Kazuki Motegi², Kosuke Yamashita³

¹Department of Nuclear Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan; ryoma.ito@jfcr.or.jp.

Journal of nuclear medicine technology

|January 15, 2025

概括

在PET/CT扫描中,MotionFree (MF) 有效地减少了呼吸道运动器件,特别是在腹部上部较小的病变中. 将MF应用于腹部上部可以改善SUV测量,而不会延长扫描时间.

科学领域:

核医学是一种核医学.
医疗成像医学成像
放射学放射学是一门学科.

背景情况:

呼吸道运动器件是正子发射断层扫描/计算机断层扫描 (PET/CT) 成像中的一个重大挑战,可能会影响诊断的准确性.
运动自由 (MF) 是一种技术,旨在减轻PET/CT扫描期间的呼吸运动.
评估MF在不同PET/CT扫描平台和腹部区域的疗效对于优化其临床应用至关重要.

研究的目的:

通过使用两个不同的PET/CT扫描仪,验证MotionFree (MF) 在减少腹部区域呼吸运动器件方面的有效性.
确定MF有效使用的最佳策略,考虑扫描仪类型,病变位置和病变大小等因素.
评估MF对腹部病变标准化摄入值 (SUV) 测量的影响.

主要方法:

198名患者接受了F-FDG PET/CT呼吸门¹⁸,有或没有MF.
图像检测是在发现MI (DMI) 和发现IQ (DIQ) PET/CT扫描仪上进行的.
根据腹部区域 (上部与下部),病变大小 (<20毫米与≥20毫米) 和扫描仪类型分析了数据;医生对运动器件减少的评估和SUV变化率 (ΔSUV) 的计算进行了.

主要成果:

在上腹部扫描的31.3%和下腹部扫描的0.5%中,MF减少了运动器件.
与DIQ扫描仪 (12.0%) 相比,使用DMI扫描仪 (52.0%) 的文物减少更为明显.
对于腹部上部病变,较小的病变 (<20毫米),以及DMI扫描仪的病变,观察到显著的 ΔSUV 增加,表明病变的检测和量化能力有所改善.

结论:

MotionFree (MF) 有效地减少呼吸道运动器件,特别是在高空间分辨率的PET/CT图像和腹部上部病变中.
在两种经过测试的PET/CT扫描仪上,MF显著增加了小型病变 (<20毫米) 和腹部上部病变的SUV测量.
建议将MF应用于腹部上部,以增强SUV测量,并可能减少获取时间,优化其临床实用性.

关键词:

18F-FDG 关于PET/CT 的研究运动自由的运动.数据驱动的门关是数据驱动的.图像模糊导致图像模糊.呼吸运动是呼吸的运动.

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