Prediction Model for the Recanalization OuTcome Evaluation of Ischemic Stroke Using Multimodal CT

NCT ID: NCT03670862

Last Updated: 2021-09-20

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 862 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2019-01-01
• Study Completion Date: 2021-03-30

Brief Summary

Prediction model for the Recanalization OuTcome Evaluation of ischemic stroke using multimodal CT (PROTECT) study was a multicenter prospective observational study that recruited patients from 13 centers located in 10 provinces across China. The study was to assess the effects of novel imaging biomarkers/ imaging patterns based on multimodel CT for patients selection and outcome prediction in acute ischemic stroke.

Detailed Description

Patients Patients with cerebral ischemia symptoms of anterior circulation or posterior circulation onset in 24 hours were included. A neurological evaluation (Modified Rankin Scale and NIHSS); physical examination, including measurement of weight (kg) and vital signs (supine systolic and diastolic blood pressure); time from symptom onset to enrollment were recorded.

Imaging protocols:

CT scan protocols: Non-contrast computed tomography(NCCT) , computed tomography angiography(CTA), computed tomography perfusion(CTP)

Contrast agent:

CTA: Omniscan 40-50ml, 5ml/s; saline solution 50ml, 5ml/s

CTP: Omniscan 50ml, 5ml/s; saline solution 50ml, 5ml/s

Imaging evaluation:

CTA was reviewed and stenosis or occlusive lesions were identified. Parameter maps including cerebral blood flow, cerebral blood volume, mean transit time, the time to the maximum of the residue function derived from CTP were processed by the software Rapid to quantitatively assess infarct core volume and mismatch.

Multiphase CTA was extracted from CTP to evaluate the collateral circulation.

Treatment:

Intravenous recombinant tissue plasminogen activator(rtPA), endovascular therapy, and conventional treatment including neuroprotection, anti-platelet, and statin according to the guideline.

Follow up:

Modified Rankin Scale(mRS) was obtained at 90 days after symptom onset. An imaging follow-up was also recommended within 30 days after symptom onset.

Conditions

Stroke, Acute

Study Design

• Observational Model Type: CASE_ONLY
• Study Time Perspective: PROSPECTIVE

Study Groups

stroke

Ischemic stroke patients with sympton onset in 24 hours

CT

Intervention Type: OTHER

Non-contrast computed tomography , computed tomography angiography, computed tomography perfusion imaging

Interventions

CT

Non-contrast computed tomography , computed tomography angiography, computed tomography perfusion imaging

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Cerebral ischemic sympton with onset in 24 hours
• All CT examination performed according to study protocol
• Signed informed consent obtained from the patient or patient's legally authorized representative

Exclusion Criteria

• Acute intracranial hemorrhage
• Pre-existing medical, the neurological, or psychiatric disease that would confound the neurological, functional, or imaging evaluations
• Pregnancy
• Known allergy to iodine previously refractory to pretreatment medications
• Renal Failure (serum creatinine > 2.0 or Glomerular Filtration Rate < 30)
• History of severe kidney disease as an adult, including tumor or transplant surgery, or family history of kidney failure
• Severe cardiac insufficiency

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Chinese PLA General Hospital

OTHER

Sponsor Role: lead

Responsible Party

Xin Lou

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Xin Lou, M.D.,Ph.D.

Role: STUDY_CHAIR

Chinese PLA General Hospital

Locations

Chinese PLA General Hospital

Beijing, Beijing Municipality, China

Countries

China

Other Identifiers

PROTECT-ChinaPLAGH

Identifier Type: -

Identifier Source: org_study_id