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RecruitingNCT03607565Updated Sep 1, 2023

A New Parameter Derived From DSA to Evaluate Cerebral Perfusion

An observational study in Cerebral Ischemia, sponsored by Xi'an No.3 Hospital. Recruiting at 1 site in China. Per ClinicalTrials.gov, last updated 2023-09-01.

Sponsored by Xi'an No.3 Hospital · Observational

From the registry’s dates

  • Started Jul 2018; still recruiting 8 years 3 months later.
Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
30,000
Sex
All
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Study summary

This observational study focus on a new parameter of cerebral perfusion derived form digital substraction angiography.

Read the detailed description

Ischemic cerebrovascular disease is an important cause of death and disability in the world. Digital Subtraction Angiography (DSA) is the golden index for evaluating cerebral blood vessels. We introduced a new parameter derived from DSA to evaluate the perfusion to predict the outcomes in acute stroke with large vessel occlusion.

To study the possible relationship between the new parameter of cerebral perfusion derived from DSA and outcomes in cerebral ischemia(modified Rankin Scale), we intend to retrospectively analyze the images derived from patients who undergone the DSA and follow-up outcomes(modified Rankin Scale).

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Conditions studied

  • Cerebral Ischemia

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03

In context

Brain Ischemia

217 studies on the registry are indexed under Brain Ischemia; 42 are open to participants now.

This study's planned enrollment of 30,000 is above the median of 203 across 72 observational studies indexed under Brain Ischemia.

Browse Brain Ischemia studies →

Lead sponsor

Xi'an No.3 Hospital is the lead sponsor of 7 studies on the registry; 7 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

the study population is from primary care clinic

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Cerebral ischemia
  2. patients undergone DSA

Exclusion criteria

Exclusion Criteria:

1.cerebral hemorrhage

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Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
30,000 participants (estimated)
Patient registry
No

Groups and cohorts

  • good perfusion in DSA

    We introduced a new parameter derived from DSA to evaluate the perfusion in cerebral ischemia.(good perfusion)

  • middle perfusion in DSA

    We introduced a new parameter derived from DSA to evaluate the perfusion in cerebral ischemia.(middle perfusion)

  • poor perfusion in DSA

    We introduced a new parameter derived from DSA to evaluate the perfusion in cerebral ischemia.(poor perfusion)

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What researchers measure

Primary outcomes

  1. the outcomes between good perfusions and poor perfusions

    Results are reported as odds ratios (ORs) with 95% confidence intervals (CIs).

    Time frame: 3 months to 2 years

Secondary outcomes

  1. the outcomes between good perfusions and middle perfusions

    Results are reported as odds ratios (ORs) with 95% confidence intervals (CIs).

    Time frame: 3 months to 2 years

07

Study locations

1 of 1 sites recruiting
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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Jul 2018 (actual). Primary completion is estimated for Jul 2028, 120 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 20, 2018
First posted
Jul 31, 2018
StartActual
Jul 15, 2018
Primary completionEst.
Jul 15, 2028
CompletionEst.
Jul 15, 2038
Last update
Sep 1, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 1, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03607565
Lead sponsor
Xi'an No.3 Hospital
Responsible party
Sponsor
First posted
Jul 31, 2018
Start date
Jul 15, 2018
Primary completion
Jul 15, 2028 (estimated)
Completion
Jul 15, 2038 (estimated)
Last update
Sep 1, 2023

Study contacts

Tian Ye, doctor
Contact
chhty@sina.com
+8613519131549
Nannan Han, doctor
study director · department of neurology Xi'an No3 Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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