- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05735301
MR Imaging Selection for Endovascular Treatment in Acute Ischemic Stroke at 6 to 24 Hours (MIELS)
MR Imaging Selection for Endovascular Treatment in Acute Ischemic Stroke at 6 to 24 Hours: A Prospective Multicenter Randomized Clinical Trial of FVH-DWI Mismatch Versus CT/MR Perfusion
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The efficacy and safety of endovascular thrombectomy(EVT) in patients with acute ischemic stroke(AIS) due to anterior circulation large vessel occlusion(LVO) is well established in multiple randomized controlled trials (RCTs) in late (treatment) time windows (6-16hours),and compared with medical therapy, EVT can significantly improve the prognosis. DEFUSE 3(EndovascularTherapy FollowingImagingEvaluationforIschemicStroke3)andDAWN (DWIorCTPAssessmentWithClinicalMismatchintheTriageof Wake-UpandLatePresentingStrokesUndergoing NeurointerventionWithTrevo) reliedonCT-perfusion(CTP) or magneticresonancediffusion(DWI)and/orperfusion(PWI), and utilized automated imaging analysis with Rapid Processing of Perfusion and Diffusion (RAPID; iSchemaView, Menlo Park, CA) software to determine eligibility[2,3,4].Some use cerebral infarction volume, presence or absence of cerebral hemorrhage and bleeding tendency, arterial occlusion location, perfusion parameters (CBV<70 mL; The gold standard for mismatch ratio ≥1.8; mismatch volume >15 ml) toassess patients who were compatible with acute anterior circulation LVO ischemic stroke undergoing arterial thrombectomy. The advantages of using perfusion imaging assessment are the ability to identify DWI-negative cerebral ischaemia, objectively evaluate ischemic semi-dark bands, and identify some cases of overperfusion. However, for most centers, CT OR MRperfusion in the emergency department is limited, or the appropriate analysis software is not available, and even imaging equipment does not support perfusion.
As a result, most of the centers use multiparametric MR to screen EVT-eligible LVO patients. In the study of DAWN,researchers use MR and some complicated criterias such as clinical symptom-imaging mismatch, the relationship between age and NIHSS score to select patients who meet 6-24hours with acute anterior circulation LVO, It wasa certain complex way to used in clinical work, and difficult to promoting the application clinically.
All the acute ischemic stroke protocols are trying to find a way to balance theoptimal screening assessment of EVT patients (with)and minimal imaging time to facilitate rapid and effective treatment. Fast multiparametric MR sequences typically include DWI, FLAIR, MRA, and gradient echo(GRE) sequences, further reducing the time and versatility of multiparametricMRI scans, requiring more informations to be extracted from fewer sequences.
Early researches described that a rounded or serpentine brightening of the parenchyma or cortical surface bordering the subarachnoid space in FLIAR sequence on MRI scan is called fluid attenuation inversion recovery vascular hyperintensity(FVH). In a prospective study, slow blood flow on the FLAIR sequence was associated with cerebral collateral circulation and prognosis [12].At the same time, it has been suggested that FVH in the FLAIR sequence of the MRI scan sequence can indirectly indicate LVO or vascular stenosis, and insufficient collateral circulation leads to FVH and early ischemia [1]. According to our completed retrospective study, FVH-DWI mismatch assessment and perfusion assessment showed good interrater reliability( κ= 0.71,[95% CI, 0.62-0.81]). There is no statistical difference in the rate of good clinical prognosis of patients undergoing EVT based on the two evaluation methods(X2=0.204,P=0.652).
It has been found that FVHsign is an indicator of LVO or vascular stenosis, inadequate collateral circulation leading to slow blood flow and early ischaemia. The presence of the FVH sign is not only fairly consistent with areas of low perfusion, but its sensitivity and specificity is similar to that of time-flight magnetic resonance angiography(MRA) for the diagnosis of large vessel occlusion.DWI volume and FVH-DWI mismatch in acute stroke patients might be useful for predicting functional outcome after stroke[10]. It was thus hypothesized that FVH sign could be an important and convenient imaging manifestation reflecting the under-perfusion of brain tissue in patients with cerebral infarction with LVO.
. In this study, a randomised controlled approach was adopted to assess the risk and prognosis of endovascular treatment by using the "FVH-DWI mismatch" to determine the presence of an ischemic penumbra and collateral circulation in patients, with the aim of establishing a simple evaluation method based on the indirect evaluation of collateral circulation on MR to screen patients who underwent thrombolysis at 6 to 24 hours overtime. It may be similar to the perfuse evaluation system, but is more easily replicable.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Ming Wei, doctorate
- Phone Number: 13502182903
- Email: drweiming@163.com
Study Locations
-
-
Tianjin
-
Tianjin, Tianjin, China, 300222
- Recruiting
- TianJinHH
-
Contact:
- Ming Wei, doctorate
- Phone Number: 13502182903
- Email: drweiming@163.com
-
Principal Investigator:
- Ming Wei, doctorate
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients over 18 years of old;
- Patients with acute anterior circulation ischemic stroke 6-24h after onset and NIHSS score ≥6 and RACE score ≥5 score at 6-24 hours of onset;
- No intracranial hemorrhage confirmed by cranial CT and CT ASPECTS score ≥ 6;
- The Modified Rankin Scale (mRS) before the onset of the disease was 0-2;
- All patients' legal representatives have signed the informed consent form;
- Pre-survival period 6 months or more.
Exclusion Criteria:
- 1. Active hemorrhage or preexisting tendency to hemorrhage
- CT shows hypointense areas exceeding 1/3 of the middle cerebral artery supply area, with significant midline structural displacement of cerebral edema
- Rapid neurological improvement, NIHSS score less than 6, or evidence of spontaneous revascularization
- Signs and symptoms typical of posterior circulation stroke, such as vertigo, nystagmus, choking, swallowing disorder, ataxia, and gaze to the affected side
- A stroke attack with epilepsy that prevents an accurate NIHSS score from being obtained.
- A platelet count of less than 100 x 10^9 /L
- Hereditary or acquired bleeding tendency, coagulation factor deficiency, recent anticoagulant medication (INR>3 or PPT more than 3 times normal)
- Presence of signs of cardiac, hepatic or renal failure
- Baseline blood glucose <50mg/dL (2.78mmol) or >400mg/dL (22.20mmol)
- Uncontrolled hypertension (SBP >185mmHg; DBP >110mmHg)
- Expected survival less than 90 days.
- Pregnancy.
- Chronic obstructive pulmonary disease, inflammation of the lungs, pleural effusion, ARDS, irregular breathing and other pulmonary diseases requiring emergency treatment.
- Patients with unstable vital signs (heart rate ≤ 50bpm or ≥ 120bpm, oxygen saturation less than ≤ 90%. R ≥ 30bpm or ≤ 10bpm.
- Patients who are unable to complete the 90-day follow-up
- A history of severe allergy to contrast media
- The presence of any other condition that is not suitable for endovascular treatment.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Screening
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: MR/CT perfusion group
MRI group consisted of patients who underwent DWI, FLAIRE, T1, T2, and MRA sequences.After randomization, the attending physician determined surgical treatment based on the imaging results.
|
Endovascular therapy, as an adjunct to standard stroke therapy, may be beneficial for a very select population of patients who present with an acute ischemic stroke and have a proven large, proximal occlusion on imaging. Endovascular therapy includes any one or more of the following: Intra-arterial thrombolytic therapy, aspiration, stent retrieval, or a combination of multiple mechanical devices.Remedial measures after failed thrombectomy are permitted by pharmacologic arterial thrombolysis or intravenous infusion of antiplatelet drugs, such as tirofiban or rt-PA
Drug conservative therapy could be uesd in patients who with no indication of surgery
Other Names:
|
Other: MRI group
The perfusion sequence was examined by the Control Group, and the F-stroke Stroke software (Brainseal Intelligent Technology) was used for data processing.After randomization, the attending physician determined surgical treatment based on the imaging results.
|
Endovascular therapy, as an adjunct to standard stroke therapy, may be beneficial for a very select population of patients who present with an acute ischemic stroke and have a proven large, proximal occlusion on imaging. Endovascular therapy includes any one or more of the following: Intra-arterial thrombolytic therapy, aspiration, stent retrieval, or a combination of multiple mechanical devices.Remedial measures after failed thrombectomy are permitted by pharmacologic arterial thrombolysis or intravenous infusion of antiplatelet drugs, such as tirofiban or rt-PA
Drug conservative therapy could be uesd in patients who with no indication of surgery
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Functionally independent outcome in all enrolled patients
Time Frame: 90 days
|
defined as patients with a mRS Score of 0-2 at 90 days (mRS 90d(Scores on the modified Rankin scale range from 0 to 6, with 0 indicating no symptoms, 1 no clinically significant disability, 2 slight disability, 3 moderate disability, 4 moderately severe disability, 5 severe disability, and 6 death,) of a randomized group of modified intention-to-treat (mITT) patients (defined as patients with acute macrovascular occlusions treated optimally with endovascular or pharmacologic therapy) at 90 days (with an assessment time window of ±14 days) and analyzed for noninferiority.
|
90 days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Modified Rankin scale scores at 90 days
Time Frame: 90 days
|
(mRS 90d(Scores on the modified Rankin scale range from 0 to 6, with 0 indicating no symptoms, 1 no clinically significant disability, 2 slight disability, 3 moderate disability, 4 moderately severe disability, 5 severe disability, and 6 death,) of a randomized group of modified intention-to-treat (mITT) patients (defined as patients with acute macrovascular occlusions treated optimally with endovascular or pharmacologic therapy) at 90 days (with an assessment time window of ±14 days) and analyzed for noninferiority.
|
90 days
|
Successful reperfusion after endovascular treatment
Time Frame: immediately the surgeon thought the thrombectomy completed and performed a second cerebral angiography
|
extended Thrombolysis in Cerebral Infarction (eTICI) score of 2b, 2c or 3.
|
immediately the surgeon thought the thrombectomy completed and performed a second cerebral angiography
|
Recanalization rate
Time Frame: 72 hours
|
Number of subjects who achieved successful reperfusion/total number of subjects who received endovascular treatment, confirmed by MRA, CTA, or digital subtraction angiography (DSA).
|
72 hours
|
Final infarct volume
Time Frame: 72hours
|
change from baseline in the infarct volume as calculated by CBV or DWI.
|
72hours
|
NIHSS score
Time Frame: 24 hours、72hour sand 7 days postoperatively
|
scores range from 0 to 42, with higher scores indicating a more severe deficit.
|
24 hours、72hour sand 7 days postoperatively
|
Quality of life assessment at 90 days
Time Frame: 90 days
|
European Five Dimensions and Five Levels Scale (EQ-5D-5L) scores (range, -0.39 [worst] to 1.00 [best]); Barthel Index scores at 90 days (range, 0 [severe disability] to 100 [no disability]).
|
90 days
|
mortality
Time Frame: 90 days
|
mortality of all-cause.
|
90 days
|
symptomatic intracranial hemorrhage
Time Frame: 48 hours
|
the presence of extravascular blood in the cranium that was associated with an increase in the NIHSS score of ≥4 points or death and was judged to be the predominant cause of neurologic deterioration.
|
48 hours
|
FVH-ASPECT score
Time Frame: 24 hours、72hour sand 7 days postoperatively
|
FVH-ASPECTS: 0-7, with 0 indicating absence of FVH and 7 suggesting prominent FVH
|
24 hours、72hour sand 7 days postoperatively
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Ming Wei, doctorate, Tianjin Huanhu Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- wm-v1003
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Endovascular Thrombectomy
-
Hamilton Health Sciences CorporationCompletedBlood Pressure | Stroke, Acute | Mechanical Thrombectomy | Endovascular Thrombectomy | Vessels; OcclusionCanada
-
University of CincinnatiNational Institute of Neurological Disorders and Stroke (NINDS); Vanderbilt...CompletedAcute Stroke | Endovascular ThrombectomyUnited States
-
Tianjin Huanhu HospitalRecruiting
-
Hui-Sheng ChenCompletedStroke | Endovascular ThrombectomyChina
-
Sunnybrook Health Sciences CentreUnknownOptical Coherence Tomography | Stroke of Basilar Artery | Endovascular Thrombectomy | AntithromboticsCanada
-
RenJi HospitalChanghai Hospital; Huashan Hospital; Beijing Chao Yang Hospital; Henan Provincial... and other collaboratorsRecruitingAcute Ischemic Stroke | Endovascular ThrombectomyChina
-
The First Affiliated Hospital of University of...RecruitingAcute Ischemic Stroke | Endovascular ThrombectomyChina
-
The First Affiliated Hospital of University of...CompletedAcute Ischemic Stroke | Intracranial Artery Occlusion | Endovascular ThrombectomyChina
-
Beijing Tiantan HospitalNational Natural Science Foundation of China; Beijing Municipal Science & Technology... and other collaboratorsRecruitingStroke | Vascular Occlusion | Endovascular Treatment | Mechanical Thrombectomy | Perfusion ImagingChina
-
National Taiwan University Hospital Hsin-Chu BranchRecruiting
Clinical Trials on Endovascular therapy
-
Chengdu University of Traditional Chinese MedicineRecruitingFemoropopliteal Artery OcclusionChina
-
University Hospital, Basel, SwitzerlandStryker Neurovascular; Medtronic; Swiss National Fund for Scientific Research; Phenox... and other collaboratorsRecruitingAcute Ischemic StrokeSpain, Belgium, Germany, Finland, Switzerland, United Kingdom
-
Xuanwu Hospital, BeijingFudan University; RenJi Hospital; Huashan Hospital; First Affiliated Hospital of... and other collaboratorsRecruitingChronic Limb-threatening Ischemia | Endovascular TherapyChina
-
Chinese Academy of Medical Sciences, Fuwai HospitalNot yet recruitingRenal Artery Obstruction | Hypertension, RenovascularChina
-
Shinichi YoshimuraTerminatedIschemic StrokeJapan
-
Radiant MedicalTerminatedRenal Insufficiency | Renal Failure | Kidney FailureUnited States
-
Shanghai Zhongshan HospitalUnknownRenal Artery Obstruction | Aortic Dissection | Renal Artery Stenosis | Renal PerfusionChina
-
Radiant MedicalTerminatedAcute Myocardial InfarctionUnited States
-
Medical University of South CarolinaUniversity of California, Los Angeles; National Institute of Neurological Disorders... and other collaboratorsNot yet recruitingIschemic Stroke