NCT05213793

Multi-delay Arterial Spin Labeling Application in Acute Ischemic Stroke

Application of a Noninvasive Quantitative Assessment System for Cerebral Perfusion Function in the "Green Channel" of Acute Stroke

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 200 (estimated)
• Sponsor: Xuanwu Hospital, Beijing · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This study explores the value of the non-invasive quantitative evaluation system for cerebral blood flow perfusion function in the diagnosis of stroke. Compared with traditional perfusion techniques, multi-delay arterial spin labeling (ASL) is validated to determine the accuracy of perfusion level, ischemic penumbra and other indexes in patients with acute ischemic stroke. The relationship between perfusion levels of mD-ASL parameters and clinical outcome is also studied.

Detailed description

A total of 200 patients with acute anterior circulation ischemic stroke will be prospectively enrolled. All patients underwent CTP, multi-delay ASL, DWI, CTA or TOF-MRA scanning. CBF, CBV, MTT and Tmax will be obtained based on CTP, and the range of reversible cerebral ischemia injury will be calculated based on DWI and CTP data. CBF, CBV and ATT images will be obtained based on the multi-delay ASL, and the calculated results of reversible cerebral ischemia injury will also be obtained. Meanwhile, the image quality of CTP and multi-delay ASL will be evaluated. The time from the patient to the completion of imaging examination and the imaging examination time will be recorded. Mann-whitney U test and T test can be used to compare the difference of assessment time between different test methods. Chi-square test can be used to compare the differences of image quality among different examination methods. Wilcoxon rank sum test can be used to evaluate the difference between CTP and Multi-delay ASL in terms of parameters and volume of reversible ischemic injury.

Conditions

• Stroke

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	multi-delay arterial spin labeling	Multi-delay arterial spin labeling is a new method to evaluate the degree of the cerebral perfusion. It can obtain three parameters including CBF,CBV and ATT without radiation,which is similar to the traditional technology. Multi-delay ASL can provide more information of the acute stroke patients.

Timeline

• Start date: 2021-04-01
• Primary completion: 2022-12-31
• Completion: 2025-12-31
• First posted: 2022-01-28
• Last updated: 2022-01-28

Locations

1 site across 1 country: China