| Literature DB >> 11526288 |
U Duvvuri1, S R Charagundla, S B Kudchodkar, J H Kaufman, J B Kneeland, R Rizi, J S Leigh, R Reddy.
Abstract
A fast spin-echo sequence weighted with a time constant that defines the magnetic relaxation of spins under the influence of a radio-frequency field (T1(rho)) was used in six subjects to measure magnetic resonance (MR) relaxation times in the knee joint with a 1.5-T MR imager. A quantitative comparison of T2- and T1(rho)-weighted MR images was also performed. Substantial T1(rho) dispersion was demonstrated in human articular cartilage, but muscle did not demonstrate much dispersion. T1(rho)-weighted images depicted a chondral lesion with 25% better signal-difference-to-noise ratios than comparable T2-weighted images. This technique may depict cartilage and muscular abnormalities.Entities:
Mesh:
Year: 2001 PMID: 11526288 DOI: 10.1148/radiol.2203001662
Source DB: PubMed Journal: Radiology ISSN: 0033-8419 Impact factor: 11.105