肺吸收值 (PUV):用于肺PET/CT成像的新量化方法.
Pierre-Yves Le Roux1, Romain Le Pennec2, Vincent Bourbonne3
1Univ Brest, CHU Brest, Médecine Nucléaire, GETBO, INSERM, UMR1304, CHU Cavale Blanche, 29609, Brest Cedex, France. pierre-yves.leroux@chu-brest.fr.
EJNMMI research
|July 1, 2025
概括
一种新的定量方法,肺吸收值 (PUV),准确地测量肺 perfusion PET/CT成像. 这种方法将标记物吸收正常化为解剖肺体积和总活动,克服了传统SUV指标的局限性.
科学领域:
- 核医学是一种核医学.
- 放射学 放射学是一门学科.
- 医疗成像医学成像
背景情况:
- 肺部PET/CT成像缺乏可靠的工具来量化标志物吸收强度.
- 准确的量化对于评估肺 perfusion,特别是辐射治疗后,至关重要.
研究的目的:
- 开发和验证肺 perfusion PET/CT成像的定量方法.
- 为了更好的量化,引入一种新的指标 - - 肺吸收值 (PUV).
主要方法:
- 分析了60名患者在放射治疗前后的[68Ga]Ga-MAA PET/CT扫描.
- 在CT上划分的解剖肺体积 (ALV),与PET共同记录.
- 计算标准化吸收值 (SUV),SUVp和肺吸收值 (PUV) 进行正常化.
主要成果:
- SUV和SUVp显示不一致的结果和广泛的变化.
- 在具有挑战性的量化场景中,PUV表现一致,在挑战性量化场景中表现优于SUV和SUVp.
- 将PUV正常化至ALV和总活性被证明比患者体重或注射剂量更可靠.
结论:
- 患者的体重和注射剂量不适合正常化肺 perfusion 量化.
- 拟议的PUV指标,使用ALV和总活性,为肺 perfusion PET/CT提供了可靠的定量方法.
- PUV提高了肺 perfusion 影像分析的可复制性和准确性.
更多相关视频
07:54Implantation and Monitoring by PET/CT of an Orthotopic Model of Human Pleural Mesothelioma in Athymic Mice
Published on: December 21, 2019
7.0K
06:53Management of Respiratory Motion Artefacts in 18F-fluorodeoxyglucose Positron Emission Tomography using an Amplitude-Based Optimal Respiratory Gating Algorithm
Published on: July 23, 2020
5.7K
相关概念视频
Positron Emission Tomography
5.9K
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
5.9K
Radiological Investigation III: Pulmonary Angiogram and PET Scan
171
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
171
