Noninvasive MRA-derived fractional flow for intracranial stenosis: methodological evaluation and hemodynamic insights - Scorecard - MDSpire

Noninvasive MRA-derived fractional flow for intracranial stenosis: methodological evaluation and hemodynamic insights

  • By

  • Xiaohui Wang

  • Haojing Zhu

  • Zhihua Du

  • Rongju Zhang

  • Yang Bian

  • Xinfeng Liu

  • Bin Lv

  • Rui Zhang

  • Jinhao Lyu

  • Xu Guan

  • Ziwei Guo

  • Xiangyu Cao

  • Jiawen Zhu

  • Rong Zou

  • Jianping Xiang

  • Shengyuan Yu

  • Jun Wang

  • June 29, 2026

  • 0 min

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Clinical Scorecard: Evaluation of a Noninvasive MRA-Based Fractional Flow Method for Assessing Intracranial Stenosis: Methodological Insights and Hemodynamic Implications

At a Glance

CategoryDetail
ConditionIntracranial Atherosclerotic Stenosis (ICAS)
Key MechanismsNoninvasive fractional flow (FF) assessment using magnetic resonance angiography (MRA)
Target PopulationPatients aged 18–80 with ischemic stroke or transient ischemic attack due to ICAS
Care SettingClinical evaluation of hemodynamic severity in cerebrovascular disease

Key Highlights

  • MRA-FF shows moderate-to-good agreement with invasive pressure-wire-derived FF (ICC = 0.743)
  • Good agreement with angiography-based FF (ICC = 0.784)
  • MRA-FF can discriminate hypoperfusion with an area under the ROC curve of 0.723
  • Exploratory optimal cutoff value for MRA-FF is 0.855
  • MRA provides a noninvasive alternative for functional assessment in ICAS

Guideline-Based Recommendations

Diagnosis

  • Use MRA-FF for noninvasive assessment of hemodynamic severity in ICAS

Management

  • Consider MRA-FF as a tool for functional evaluation in patients with ICAS

Monitoring & Follow-up

  • Utilize MRA-FF for serial monitoring of hemodynamic changes in ICAS

Risks

  • Invasive methods carry procedural risks and potential toxicity

Patient & Prescribing Data

Patients with ischemic events attributable to ICAS

MRA-FF may facilitate better management decisions based on hemodynamic assessment

Clinical Best Practices

  • Incorporate MRA-FF in the evaluation of patients with suspected ICAS
  • Use MRA-FF in conjunction with other imaging modalities for comprehensive assessment

Related Resources & Content

Original Source(s)

Noninvasive MRA-derived fractional flow for intracranial stenosis: methodological evaluation and hemodynamic insights

  • by Xiaohui Wang, Haojing Zhu, Zhihua Du, Rongju Zhang, Yang Bian, Xinfeng Liu, Bin Lv, Rui Zhang, Jinhao Lyu, Xu Guan, Ziwei Guo, Xiangyu Cao, Jiawen Zhu, Rong Zou, Jianping Xiang, Shengyuan Yu, Jun Wang

  • June 29, 2026

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