Testing and Calibration of Non-Invasive Optical Imaging Technology for Functional Brain Imaging

This study is currently recruiting participants. (see Contacts and Locations)
Verified April 2014 by National Institutes of Health Clinical Center (CC)
Information provided by:
National Institutes of Health Clinical Center (CC)
ClinicalTrials.gov Identifier:
First received: September 29, 2010
Last updated: April 23, 2014
Last verified: April 2014


- Non-invasive functional near infrared (fNIR) imaging techniques use infrared light to detect changes in blood volume and oxygen levels during brain activity. fNIR is being studied as a possible way to examine the brain activity of individuals who are unable to undergo standard brain function imaging techniques (such as functional magnetic resonance imaging, or fMRI). For instance, war veterans who have iron shrapnel in the body are not able to have fMRI scans, and very young children or children with autism and related disorders are often not able or willing to cooperate long enough in the MRI environment to allow full imaging studies to take place. Researchers are interested in comparing the results of fNIR and fMRI performed on healthy volunteers to determine if fNIR produces similarly accurate results.


- To examine the capabilities of non-invasive functional near infrared imaging techniques on healthy volunteers and compare the results with the existing outcomes of functional magnetic resonance imaging.


- Healthy volunteers at least 18 years of age.


  • Participants will have one study visit. Depending on the complexity of the task, the whole exam will take between 5 minutes and 1 hour to perform.
  • Participants will be asked to sit as still as possible while wearing a headband that includes light sources and detectors (the fNIR device).
  • Participants will be asked to perform a set of tasks (e.g., reading sentences or counting numbers in one s head). Data will be collected during these experiments.

Neurovascular Coupling
Functional Brain Imaging

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Testing and Calibration of Non-Invasive Optical Imaging Technology for Functional Brain Imaging

Further study details as provided by National Institutes of Health Clinical Center (CC):

Estimated Enrollment: 40
Study Start Date: August 2010
Detailed Description:

Objective: to cross-validate our near infrared spectroscopy (NIRS) imaging system with existing functional magnetic resonance imaging (fMRI) data, and b) to investigate any significant technical issues associated with optode placement and motion artifacts, and to explore techniques that will potentially improve the feasibility and reliability of the system according to the needs of the population whom existing imaging systems are unsuitable for.

Study population: 40 healthy volunteers

Design: The study will look for correlations between NIRS signal changes in healthy subjects when performing functional tasks, and existing fMRI data.

Outcome Measures: graded changes in blood flow and oxygen, measured with NIRS, in response to different functional tasks.

Note: This study is sponsored by the Center for Neuroscience and Regenerative Medicine (CNRM). De-identified data including imaging data sent to CNRM may be shared with outside investigators or collaborators. This data may be used for a variety of research purposes. The Henry M. Jackson Foundation for the Advancement for Military Medicine (HJF), USUHS, or DoD representatives may also access data for audit purposes.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Age 18 years or greater.


  • Healthy volunteers with any skin disease.
  • Past or present hematologic abnormality of Hgb less than 9.0 gm/dl.
  • Healthy volunteers with any past or present vascular disease
  • Known adverse reaction to latex.
  • Any medical condition that, in the opinion of the Principal Investigator, would preclude the inclusion of a patient onto this research study.
  • Unable or unwilling to give informed consent.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01212029

Contact: Fatima A Chowdhry (301) 402-7804 fatima.chowdhry@nih.gov
Contact: Amir Gandjbakhche, Ph.D. (301) 435-9235 amir@helix.nih.gov

United States, Maryland
National Institutes of Health Clinical Center, 9000 Rockville Pike Recruiting
Bethesda, Maryland, United States, 20892
Contact: For more information at the NIH Clinical Center contact Patient Recruitment and Public Liaison Office (PRPL)    800-411-1222 ext TTY8664111010    prpl@mail.cc.nih.gov   
Sponsors and Collaborators
Principal Investigator: Amir Gandjbakhche, Ph.D. Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
  More Information

Additional Information:
ClinicalTrials.gov Identifier: NCT01212029     History of Changes
Other Study ID Numbers: 100198, 10-CH-0198
Study First Received: September 29, 2010
Last Updated: April 23, 2014
Health Authority: United States: Federal Government

Keywords provided by National Institutes of Health Clinical Center (CC):
Near Infrared
Optical Imaging
Brain Imaging
Healthy Volunteer

ClinicalTrials.gov processed this record on October 21, 2014