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Magnetic Resonance Imaging (284029)
Principal Investigator
Research Area:
Bone and calcium physiology
Muscle physiology
Species Studied
Scientific Name: Homo sapiens Species: Human

Magnetic resonance imaging (MRI) is a safe and non-invasive scanning technique that uses low frequency radio waves to form an image by reading the amount of hydrogen in an area. This method provides outstanding anatomical images for volume measurements and quantification of chemical and physical changes induced in tissues. Using MRI, the objectives of this study were 1) to determine the specific loss and recovery of muscle volume in the calf, thigh and lumbar region of the back, 2) to determine whether residual effects resulting from intervertebral disc expansion during weightlessness are evident upon return to Earth's gravity and 3) to determine changes in bone marrow composition as reflected by changes in the marrow transverse relaxation time.

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LeBlanc A, Rowe R, Schneider V, Evans H, Hedrick T. Regional muscle loss after short duration spaceflight. Aviat Space Environ Med 1995; 66:1151-4.[]

NASA-SP-525 Final Science Results Spacelab J National Aeronautics and Space Administration Office of Managment Science and Technical Information Program Adrian LeBlanc Mangetic Resonance Imaging After Exposure to Microgravity February 1995 Pg 56

Schneider V, Oganov V, LeBlanc A, Rakmonov A, Taggart L, Bakulin A, et. al. Bone and body mass changes during space flight. Acta Astronautica 1995; 36(8-12):463-466. []

Intervertebral disk
Magnetic resonance imaging (MRI)
Muscle, skeletal
Muscular atrophy
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Data Information
Data Availability
Archive is complete. Data sets are not publicly available but can be requested.
Data Sets+ Request data

24 hour urine volume
Activity log
Angular velocity
Body mass
Cross section area thigh
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Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
STS-47 09/12/1992 09/19/1992 7 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Pamela A. Bieri
Institutional Support
National Aeronautics and Space Administration (NASA)
Proposal Source