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NCT04033133 · ClinicalTrials.gov registry record · NA
Cerebral Blood Flow and tDCS
A NA study, sponsored by University of Iowa.
- Completed
- Registry status
- NA
- Development phase
- 3
- Enrollment target
NCT04033133: Completed NA study, sponsored by University of Iowa.
NCT04033133 is a NA study that has completed, run by University of Iowa. The registered enrollment target is 3 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (100% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04033133, a NA study, has completed, sponsored by University of Iowa.
- COMPLETED
- Registry status
- NA
- Development phase
- 3 participants
- Enrollment target
Study Summary
With this study, the investigators will substantiate if regional cerebral blood flow (CBF) is affected by tDCS, assess the amount of CBF change in relation to different currents, and measure differences in regional CBF under stimulation reactivity between healthy subjects and people with Multiple Sclerosis (PwMS)using Water O-15 PET (Water Oxygen-15 Positron EmissionTomography) imaging. The objective is to investigate the changes in regional CBF after transcranial direct current stimulation (tDCS) at different intensities (1 mA, 2 mA, 3 mA, 4 mA) in healthy subjects and PwMS. The design is a cross-sectional proof of principle study in 10 healthy subjects and 10 PwMS. Relative regional brain CBF (rCBF) will be analyzed semi-quantitatively using voxel-wise and region of interest-based approaches. Changes in CBF associated with tDCS-application will be calculated with a general linear model in a ramp function of the task-specific rCBF, according to previous work in our group using a glucose analogue. Exploratory statistical testing will be done using a paired samples t-test between task and rest conditions and unpaired t-tests between PwMS and healthy controls at the same intensities. With this study the investigators will be able to dose-dependently measure real-time rCBF changes after non-invasively stimulating the superficial parts of the dorsolateral prefrontal cortex (DLPFC), a commonly used target in therapeutic tDCS applications. This will provide further insight into whether tDCS is capable of inducing changes in rCBF.
Primary Outcome
Cerebral Blood flow will be measured while subjects undergo tDCS at different intensities in the PET scanner.
Interventions
- DEVICE tDCS
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 3 participants |
| Start Date | 2019-12-20 |
| Est. Completion | 2020-08-15 |
| Phase | NA |
What the finished NCT04033133 record still lists
NCT04033133 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 3 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (100% lower).
The record links to 0 conditions, and to 1 intervention - of which tDCS is the first listed.
NCT04033133 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04033133 about?
NCT04033133 is a clinical study titled "Cerebral Blood Flow and tDCS". With this study, the investigators will substantiate if regional cerebral blood flow (CBF) is affected by tDCS, assess the amount of CBF change in relation to different currents, and measure differences in regional CBF under stimulation reactivity between healthy subjects and people with Multiple Sc...
What is the current status of trial NCT04033133?
This trial is currently completed. It is a NA study. The enrollment target is 3 participants. The study started on 2019-12-20. Estimated completion is 2020-08-15.
What interventions are being tested in trial NCT04033133?
The interventions under investigation include: tDCS (DEVICE).
Who is sponsoring clinical trial NCT04033133?
This trial is sponsored by University of Iowa, which has 228 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04033133's enrollment target sits among peer trials
3 1996th of 2000 higher than 4 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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