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PennPET Explorer: Human Imaging on a Whole-Body Imager.
The Journal of Nuclear Medicine ( IF 9.3 ) Pub Date : 2019-09-27 , DOI: 10.2967/jnumed.119.231845
Austin R Pantel 1 , Varsha Viswanath 2 , Margaret E Daube-Witherspoon 1 , Jacob G Dubroff 1 , Gerd Muehllehner 3 , Michael J Parma 1 , Daniel A Pryma 1 , Erin K Schubert 1 , David A Mankoff 1 , Joel S Karp 4
Affiliation  

The PennPET Explorer, a prototype whole-body imager currently operating with a 64-cm axial field of view, can image the major body organs simultaneously with higher sensitivity than that of commercial devices. We report here the initial human imaging studies on the PennPET Explorer, with each study designed to test specific capabilities of the device. Methods: Healthy subjects were imaged with FDG on the PennPET Explorer. Subsequently, clinical subjects with disease were imaged with 18F-FDG and 68Ga-DOTATATE, and research subjects were imaged with experimental radiotracers. Results: We demonstrated the ability to scan for a shorter duration or, alternatively, with less activity, without a compromise in image quality. Delayed images, up to 10 half-lives with 18F-FDG, revealed biologic insight and supported the ability to track biologic processes over time. In a clinical subject, the PennPET Explorer better delineated the extent of 18F-FDG-avid disease. In a second clinical study with 68Ga-DOTATATE, we demonstrated comparable diagnostic image quality between the PennPET scan and the clinical scan, but with one fifth the activity. Dynamic imaging studies captured relatively noise-free input functions for kinetic modeling approaches. Additional studies with experimental research radiotracers illustrated the benefits from the combination of large axial coverage and high sensitivity. Conclusion: These studies provided a proof of concept for many proposed applications for a PET scanner with a long axial field of view.

中文翻译:

PennPET Explorer:全身成像仪上的人体成像。

PennPET Explorer 是一种原型全身成像仪,目前以 64 厘米轴向视野运行,可以同时对主要身体器官进行成像,其灵敏度高于商业设备。我们在此报告 PennPET Explorer 的初步人体成像研究,每项研究都旨在测试设备的特定功能。方法:在 PennPET Explorer 上使用 FDG 对健康受试者进行成像。随后,患有疾病的临床受试者使用 18F-FDG 和 68Ga-DOTATATE 成像,研究对象使用实验性放射性示踪剂成像。结果:我们展示了在不影响图像质量的情况下扫描更短时间或更少活动的能力。延迟图像,18F-FDG 最多 10 个半衰期,揭示了生物学洞察力并支持随着时间的推移跟踪生物学过程的能力。在临床受试者中,PennPET Explorer 更好地描绘了 18F-FDG 嗜酸性疾病的范围。在使用 68Ga-DOTATATE 进行的第二项临床研究中,我们证明了 PennPET 扫描和临床扫描之间的诊断图像质量相当,但活性只有五分之一。动态成像研究为动力学建模方法捕获了相对无噪声的输入函数。与实验研究放射性示踪剂的其他研究说明了大轴向覆盖范围和高灵敏度相结合的好处。结论:这些研究为具有长轴向视野的 PET 扫描仪的许多提议应用提供了概念证明。PennPET Explorer 更好地描述了 18F-FDG-avid 疾病的范围。在使用 68Ga-DOTATATE 进行的第二项临床研究中,我们证明了 PennPET 扫描和临床扫描之间的诊断图像质量相当,但活性只有五分之一。动态成像研究为动力学建模方法捕获了相对无噪声的输入函数。与实验研究放射性示踪剂的其他研究说明了大轴向覆盖范围和高灵敏度相结合的好处。结论:这些研究为具有长轴向视野的 PET 扫描仪的许多提议应用提供了概念证明。PennPET Explorer 更好地描述了 18F-FDG-avid 疾病的范围。在使用 68Ga-DOTATATE 进行的第二项临床研究中,我们证明了 PennPET 扫描和临床扫描之间的诊断图像质量相当,但活性只有五分之一。动态成像研究为动力学建模方法捕获了相对无噪声的输入函数。与实验研究放射性示踪剂的其他研究说明了大轴向覆盖范围和高灵敏度相结合的好处。结论:这些研究为具有长轴向视野的 PET 扫描仪的许多提议应用提供了概念证明。动态成像研究为动力学建模方法捕获了相对无噪声的输入函数。与实验研究放射性示踪剂的其他研究说明了大轴向覆盖范围和高灵敏度相结合的好处。结论:这些研究为具有长轴向视野的 PET 扫描仪的许多提议应用提供了概念证明。动态成像研究为动力学建模方法捕获了相对无噪声的输入函数。与实验研究放射性示踪剂的其他研究说明了大轴向覆盖范围和高灵敏度相结合的好处。结论:这些研究为具有长轴向视野的 PET 扫描仪的许多提议应用提供了概念证明。
更新日期:2020-01-02
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