Data Management And Sharing System of China National Clinical Research Center for Neurological Diseases
Fractional Flow Assessment for the Evaluation of Intracranial Atherosclerosis: A Feasibility Study.
First author：Zhongrong Miao
Corresponding author：Yongjun Wang
essential_information
- Person in charge：Zhongrong Miao
- Data Sources： OTHERS
- Number of papers：OTHERS20190468
- Published time：2016-06-01
2016-06-01
Published articles
Journal：Interventional neurology
Publication type: Original Paper
IF(IF): NA
PMID: 27610123 Link To Pubmed Full text Download
Background And Purpose
Method
This was a feasibility study to assess the technical use and safety of applying a pressure guidewire to measure fractional flow across intracranial stenoses. Twenty patients with severe intracranial stenosis were recruited. The percentage of luminal stenosis, distal to proximal pressure ratios (fractional flow) and the fractional flow gradients across the stenosis were measured. Procedural success rate and safety outcomes were documented.
Conclusion
Fractional flow measurement by floating a pressure guidewire across the intracranial stenosis was technically feasible and safe in this study. Further studies are needed to validate its use for ischemic stroke risk assessment.
Main results
All 20 patients had successful crossing of stenosis by the pressure guidewire. Ten patients underwent angioplasty, and 5 had stenting performed. There was one perforator stroke, but not related to the use of the pressure wire. For the 13 patients with complete pre- and postintervention data, the mean preintervention stenosis, fractional flow and translesional pressure gradient were 76.2%, 0.66 and 29.9 mm Hg, whilst the corresponding postintervention measurements were 24.7%, 0.88 and 10.9 mm Hg, respectively. Fractional flow (r = -0.530, p = 0.001) and the translesional pressure gradient (r = 0.501, p = 0.002) only had a modest correlation with the luminal stenosis.