相关实验视频
Updated: Jun 23, 2025

09:17
Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
21.6K
脑 perfusion SPECT 在痴呆症:放射科医生应该知道什么
Tomoki Imokawa1,2, Kota Yokoyama3, Kanae Takahashi1
1Department of Diagnostic Radiology, Tokyo Medical and Dental University, Bunkyo-Ku, Tokyo, Japan.
Japanese journal of radiology
|June 18, 2024
概括
脑输液SPECT可以早期检测神经退行,帮助诊断痴呆症. 特定的低 perfusion 模式有助于区分诸如阿尔茨海默病和莱维体痴呆症等疾病.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 神经成像是一种神经成像.
背景情况:
- 脑 perfusion SPECT 在形态成像之前检测神经退行变化,这对于痴呆症评估至关重要.
- 转向基于生物标志物的诊断和痴呆症疾病修饰治疗的范式转变需要SPECT在识别神经退行方面的作用.
- 了解特定的低 perfusion 模式对于准确的痴呆症亚型和预后至关重要.
研究的目的:
- 阐明脑 perfusion SPECT 在诊断和区分各种痴呆类型中的作用.
- 要突出SPECT上的特定低 perfusion 模式与不同的神经退行性疾病的相关性.
- 强调SPECT作为神经退行和疾病进展的生物标志物的实用性.
主要方法:
- 对阿尔茨海默氏症 (AD) 患者,勒维体痴呆症 (DLB) 患者,前性痴呆症,异常性正常压力水头症和子疾病患者的脑输液SPECT发现的分析.
- 用SPECT检测到的低 perfusion 模式与临床表现和潜在病理的相关性.
- 将SPECT结果与其他成像方法 (如MRI) 的比较,如适用.
主要成果:
- 阿尔茨海默氏病通常在后带状皮质和前皮质中表现出低,进展到 temporoparietal 区域.
- 非典型的AD变体存在于症状特定区域的低输液.
- 患有莱维体的痴呆症的特征是除了AD典型的模式外,还存在头叶的低输液.
- 前性痴呆症根据临床亚型表现出区域性低输液.
- 异常性正常压力头症显示出明显的低 perfusion 和高 perfusion 模式.
- 在MRI上,子疾病在扩散限制的区域显示出低 perfusion.
结论:
- 脑输液SPECT是检测神经退行症和协助痴呆症差异诊断的宝贵工具.
- 在SPECT上特定的hyperfusion模式可以帮助区分不同的痴呆症亚型,包括AD,DLB和FTD.
- 必须在患者的整体临床情况和潜在的并发症的背景下解释SPECT发现.
相关概念视频
Radiological Investigation II: MRI and Ventilation Perfusion Scan
111
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
111
Radiological Investigation III: Pulmonary Angiogram and PET Scan
91
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...
91

![Semi-quantitative Assessment Using [18F]FDG Tracer in Patients with Severe Brain Injury](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F58641.jpg&w=3840&q=50)