Supported by the Center for Equine Health, UC Davis.
DETERMINATION OF T1 RELAXATION TIME OF NORMAL EQUINE TENDONS USING MAGIC ANGLE MAGNETIC RESONANCE IMAGING
Version of Record online: 26 OCT 2010
© 2010 Veterinary Radiology & Ultrasound
Veterinary Radiology & Ultrasound
Volume 52, Issue 2, pages 149–153, March/April 2011
How to Cite
SPRIET, M., WISNER, E. R., ANTHENILL, L. A. and BUONOCORE, M. H. (2011), DETERMINATION OF T1 RELAXATION TIME OF NORMAL EQUINE TENDONS USING MAGIC ANGLE MAGNETIC RESONANCE IMAGING. Veterinary Radiology & Ultrasound, 52: 149–153. doi: 10.1111/j.1740-8261.2010.01753.x
Presented at the 2009 Annual ACVR Meeting, Memphis, TN.
- Issue online: 9 MAR 2011
- Version of Record online: 26 OCT 2010
- Received April 16, 2010; accepted for publication August 25, 2010.
- magic angle;
- T1 relaxation time;
Seven isolated equine front limbs were used to establish the normal T1 relaxation time of equine superficial digital flexor tendon (SDFT), deep digital flexor tendon (DDFT), and suspensory ligament (SL) using magic angle magnetic resonance (MR) imaging. MR imaging of the metacarpi was performed with the limbs positioned at 55° (the magic angle) relative to the main magnetic field. Transverse spin-echo proton density and inversion recovery images were acquired. T1 relaxation time was calculated based on ratios of signal intensity determined from the different pulse sequences. T1 relaxation times for SDFT, DDFT, and SL were 288 (±17), 244 (±14), and 349 (±16) ms, respectively. The difference in T1 values between SDFT, DDFT, and SL was statistically significant. T1 values of equine tendons can be determined with magic angle imaging on a clinical MR system using <10 min total scan time. The knowledge of the normal range of T1 values may be useful to identify horses with chronic tendinopathy, where based on the human literature, an increased T1 value may be expected.