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Measuring Cerebral Blood Flow Using Pseudo-continuous Arterial Spin Labeling Perfusion Magnetic Resonance Imaging

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT02767609
Recruitment Status : Completed
First Posted : May 10, 2016
Results First Posted : April 30, 2019
Last Update Posted : April 30, 2019
Information provided by (Responsible Party):
Brenda Bartnik Olson, PhD, Loma Linda University

Brief Summary:
This study will test a new MRI sequence that measures cerebral blood flow (CBF). Because this technique for measuring CBF is new, there is little information on what the normal values for different regions of the brain should be. Information from the study will be used to establish normative CBF values for the brain, improving the reliable use of this technique for the diagnosis of brain injury or disease.

Condition or disease Intervention/treatment Phase
Traumatic Brain Injury Multiple Sclerosis Alzheimer's Disease Tumor Device: Magnetic Resonance Imaging Not Applicable

Detailed Description:

Cerebral blood flow (CBF) represents an important physiological parameter for the diagnosis and management of multiple brain disorders. The clinical need for CBF measurements is further complicated by the desire to have a non-invasive method with high temporal resolution that can measure CBF over a wide range of blood flows and in a wide range of patients. Numerous techniques are available to measure CBF. Nuclear medicine approaches, such as single positron emission computed tomography (SPECT) and positron emission tomography (PET) rely on radioisotopes which can be problematic in the pediatric population. In contrast, MRI-based methods are non-invasive and the CBF information can be obtained in conjunction with other MRI techniques (i.e. diffusion weighted imaging or spectroscopy) which allows for a combined longitudinal assessment of CBF, morphology, and metabolism, to provide a more complete understanding of the developing pathophysiological mechanisms.

Arterial spin labeling (ASL) perfusion imaging uses arterial blood water as an endogenous diffusible tracer where radiofrequency (RF) pulses magnetically label the moving spins in flowing blood without the use of a contrast agent. After a time delay allowing for the magnetically labeled blow to flow into the brain, "labeled" images are acquired. Separate control images are also acquired, without labeling and the difference between the two sets of imaged provides a measure of perfusion. Since gadolinium-based contrast agents are not required, the ASL perfusion technique is completely non-invasive. In addition, ASL techniques are insensitive to blood-brain barrier permeability changes, which can occur after strokes or with tumors.

Because gadolinium-based contrast is not used, the ASL technique has an inherently lower sensitivity than DSC-PWI. To date, there are a number of commercially available ASL techniques that differ in their labeling schemes, which has contributed to the difficulty in obtaining consistent results across different patient populations (pediatric, elderly, stroke, tumors). A number of recent reports using pseudo-continuous ASL (pCASL) have been published and show increased reliability across different patient populations. Moreover, a recent consensus statement published by the International Society of Magnetic Resonance in Medicine Perfusion Study Group recommends the use of pCASL labeling strategies for clinical applications.

The objectives of this study is to determine the accuracy and reliability of a newly developed pCASL sequence and post-processing software across multiple patient populations (neonate to elderly) and pathological processes.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 1 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Measuring Cerebral Blood Flow Using Pseudo-continuous Arterial Spin Labeling Perfusion Magnetic Resonance Imaging
Study Start Date : May 2014
Actual Primary Completion Date : March 3, 2017
Actual Study Completion Date : March 3, 2017

Arm Intervention/treatment
Experimental: Magentic Resonance Imaging
magnetic Resonance Imaging.
Device: Magnetic Resonance Imaging
All participants will have be given a MRI using a pseudo-continuous arterial spin labeling perfusion sequence.

Primary Outcome Measures :
  1. Regional Cerebral Blood Flow Values of the Brain Measured Using Pseudo-continuous Arterial Spin Labeling (pCASL) MRI. [ Time Frame: single encounter ]
    The relative cerebral blood flow (CBF) in frontal, parietal, occipital gray matter and white matter regions, basal ganglia, thalami, and cerebellum will be measured using region of interest analysis to determine institutional normative values for healthy subjects.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 90 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Any person between the ages of 18-90 years, who is undergoing routine magnetic resonance imaging (MRI) of the head with or without contrast at Loma Linda University Medical Center.
  • Must be eligible for MRI (no electronic or metal implants that are not MR compatible).

Exclusion Criteria:

  • Electronic or metal implant that is not MRI safe, pregnancy or claustrophobia.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02767609

Sponsors and Collaborators
Loma Linda University
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Principal Investigator: Brenda Bartnik Olson, PhD Loma Linda University Medical Center
  Study Documents (Full-Text)

Documents provided by Brenda Bartnik Olson, PhD, Loma Linda University:
Informed Consent Form  [PDF] May 11, 2016

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Responsible Party: Brenda Bartnik Olson, PhD, Associate Proffesor, Loma Linda University
ClinicalTrials.gov Identifier: NCT02767609    
Other Study ID Numbers: 5140083
First Posted: May 10, 2016    Key Record Dates
Results First Posted: April 30, 2019
Last Update Posted: April 30, 2019
Last Verified: April 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Additional relevant MeSH terms:
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Multiple Sclerosis
Alzheimer Disease
Brain Injuries
Brain Injuries, Traumatic
Demyelinating Autoimmune Diseases, CNS
Autoimmune Diseases of the Nervous System
Nervous System Diseases
Demyelinating Diseases
Autoimmune Diseases
Immune System Diseases
Brain Diseases
Central Nervous System Diseases
Neurodegenerative Diseases
Neurocognitive Disorders
Mental Disorders
Craniocerebral Trauma
Trauma, Nervous System
Wounds and Injuries