In this work, we present the first triple quantum filtered (TQF) sodium MR images of the human knee joint in vivo. A 3D TQF data set of 16 slices was obtained in 20 min using a TQF pulse sequence preencoded to a twisted projection imaging readout. Images clearly demarcate patellar cartilage and also
Triple quantum sodium imaging of articular cartilage
โ Scribed by Ravinder Reddy; Erik K. Insko; John S. Leigh
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 566 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0740-3194
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โฆ Synopsis
Abstract
Triple quantum (TQ) sodium imaging of bovine articular cartilage is presented. True triple quantum imaging sequence was modified to incorporate asymmetric echo acquisition. Triple quantum signal expression in the presence of residual quadrupolar interaction is presented. The filtering capability of the sequence is first demonstrated on an agarose phantom. Both single and triple quantum images of articular cartilage are compared. The TQ image shows nonโzero signal intensity solely from cartilage, indicating complete suppression of signals from bone marrow and saline. The advantages of TQ imaging of articular cartilage, its feasibility in in vivo situations and further improvements in SNR are described.
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