A feasibility study of in vivo T1rho imaging of the intervertebral disc.

A feasibility study of in vivo T1rho imaging of the intervertebral disc. Research Abstract Details 

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A feasibility study of in vivo T1rho imaging of the intervertebral disc. Abstract Text:

Gabrielle Blumenkrantz,Xiaojuan Li,Eric T Han,David C Newitt,Jason C Crane,Thomas M Link,Sharmila Majumdar,

PURPOSE: Recent studies have proposed that magnetic resonance (MR) T1rho relaxation time is associated with loss of macromolecules. The depletion of macromolecules in the matrix of the intervertebral disc may be an initiating factor in degenerative disc disease. The purpose of this study was to test the feasibility of quantifying T1rho relaxation time in phantoms and intervertebral discs of healthy volunteers using in vivo MR imaging at 3 T. MATERIALS AND METHODS: A multislice T1rho spiral sequence was used to quantify T1rho relaxation time in phantoms with different agarose concentrations and in the intervertebral discs of 11 healthy volunteers (mean age=31.3 years; age range=23-60 years; gender: 5 females, 6 males). RESULTS: The phantom studies demonstrated the feasibility of using spiral imaging at 3 T. The in vivo results indicate that the median T1rho value of the nucleus (116.6+/-21.4 ms) is significantly greater (P<0.05) than that of the annulus (84.1+/-11.7 ms). The correlations between the age of the volunteers and T1rho relaxation time in the nucleus (r2=-0.82; P=0.0001) and the annulus (r2=-0.37; P=0.04) were significant. A trend of decreasing T1rho values from L3-4 to L4-5 to L5-S1 was evident. CONCLUSION: The results of this study suggest that in vivo T1rho quantification is feasible and may potentially be a clinical tool in identifying early degenerative changes in the intervertebral disc.

A feasibility study of in vivo T1rho imaging of the intervertebral disc. Publishing Authors By Initials

G Blumenkrantz,X Li,ET Han,DC Newitt,JC Crane,TM Link,S Majumdar,

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A feasibility study of in vivo T1rho imaging of the intervertebral disc. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Magnetic resonance imaging

VOLUME: 24

Page Numbers: 1001-7

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ISSN: 0730-725X

DAY: 11

MONTH: 07

YEAR: 2006

A feasibility study of in vivo T1rho imaging of the intervertebral disc. Information

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LANGUAGE: eng

NlmUniqueID: 8214883

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Grant and Affiliation Information for A feasibility study of in vivo T1rho imaging of the intervertebral disc.

AFFILIATION: Department of Radiology, University of California-San Francisco, QB3 Building, Box 2520, San Francisco, CA 94158, USA. gabby@mrsc.ucsf.edu

Country: United States

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MEDLINETA: Magn Reson Imaging

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