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Clinical Trial Summary

Hundreds of babies in the world are being treated with brain cooling to prevent brain injury after they lose oxygen at birth. This study will use the newly developed information from the magnet resonance image to determine the actual temperature of the brain. This will enable us to determine if the brain is being uniformly cooled and if techniques that provide cooling need to be changed to improve the injury prevention from cooling.


Clinical Trial Description

We propose to develop a non-invasive measurement of brain tissue temperature and to apply this measurement of infants under-going cooling for HIE

1. We propose to do this by refining the use of the MRI evaluation of the NAA-H20 frequency shift. This molecular relationship is quite accurate (based on preliminary studies of an NAA-H20 phantom subject to controlled temperature variations) for measuring relative temperature changes.

2. The next step will be to perform further phantom imaging with continuous temperature measurements and to expand the phantom model. This work needs funding support to be completed.

3. At the same time we will be applying the MRI thermal imaging protocol to infants whom have experienced HIE and who are being treated with hypothermia to ameliorate the HIE. We have IRB approval to approach families and to obtain the required data during clinically indicated MRI scans, this data accumulation will add an additional 3-5 minutes to the MRI. We will then perform a second MRI after the infant is rewarmed. We will compare the pairs of readings at two different core temperatures from at least five regions of the brain.

4. We will evaluate results of regional temperature measurements to determine if cooling of the human infant brain is uniform.

5. We will compare the two modalities of cooling to determine if selective head cooling and total body cooling provide similar distribution of cooling.

6. The final goal will be to compare MRI identified injury patterns to the temperature distribution in order to determine if distribution of cooling is related to outcome. ;


Study Design

Observational Model: Case-Only, Time Perspective: Prospective


Related Conditions & MeSH terms


NCT number NCT01128673
Study type Observational
Source Vanderbilt University
Contact
Status Withdrawn
Phase N/A
Start date May 2010
Completion date June 2018

See also
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