相关实验视频
Updated: Jun 12, 2026

10:46
MRI and PET in Mouse Models of Myocardial Infarction
Published on: December 19, 2013
12.4K
时间稳固的心肌[68 Ga]Ga-FAPI PET生物标志物反映了大动脉狭窄的严重程度,并预测TAVI后的结果
Song Xue1, Qianling Ye2, Aleksa Lazarević1
1Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, Vienna General Hospital, Medical University of Vienna, Vienna, Austria.
European journal of nuclear medicine and molecular imaging
|February 15, 2026
概括
一个新的Ga-FAPI PET成像生物标志物,TBR,EFM,有效地测量主动纤维细胞信号在大动脉狭窄 (AS). 这种生物标志物预测了通过导管的大动脉植入 (TAVI) 后的临床反应和恢复.
科学领域:
- 心血管成像 - 心血管成像
- 核医学是一种核医学.
- 纤维化生物标志物纤维化生物标志物
背景情况:
- 大动脉狭窄 (AS) 导致心肌重塑和纤维细胞激活,但缺乏可靠的生物标志物来预测纤维生成和TAVI后恢复.
- 纤维细胞激活蛋白 (FAP) 向的PET成像在体内提供了激活纤维细胞的非侵入性可视化.
- 这项研究评估了一种新的,时间稳定的,血液池正常化的心肌[68Ga]Ga-FAPI PET成像生物标志物用于AS评估.
研究的目的:
- 为了评估一个具有时间稳定的,血液池正常化的心肌[Ga]Ga-FAPI PET成像生物标志物在患有严重症状AS的患者中.
- 确定这个生物标志物是否反映了AS负担,并预测了通过导管的大动脉植入 (TAVI) 后的结果.
- 为了将生物标志物与已建立的临床标志物如NT-proBNP和LVEF相关联.
主要方法:
- 19名患有严重症状AS的患者在60,70和120分钟后接受了Ga-FAPI-04 PET/CT扫描.
- 一个半自动管道细分了左心室 (LV) 心肌,以划分纤维细胞活性升高 (EFM) 的区域.
- 心肌和血液池SUV平均值被量化,以及心肌与血液的正常化指数,TBR(EFM),与NT-proBNP和LVEF相关联.
主要成果:
- 图像成像时间点的TBR (EFM) 保持稳定,与显著下降的心肌SUV不同.
- TBR ((EFM) 在所有时间点都与NT-proBNP有显著的相关性,而心肌SUVmean没有.
- 在一年后对TAVI反应的患者中,基线TBR (EFM) 显着较低,预测了更好的临床结果.
结论:
- 心肌[68]Ga-FAPI TBR (EFM) 作为AS中活性纤维细胞信号的时间稳定指数,反映出血液动力学压力.
- 这种生物标志物有效地分层TAVI后一年的临床反应,表明60分钟的获取可能足够.
- 对于这些产生假设的发现,需要在更大,多中心的队列中进一步验证.
相关概念视频
Radiological Investigation III: Pulmonary Angiogram and PET Scan
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...
Acute Coronary Syndrome III: Diagnostic Studies
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...

