Determination of t1 relaxation time of normal equine tendons using magic angle magnetic resonance imaging

Mathieu Spriet, Erik R Wisner, Lucy A. Anthenill, Michael H. Buonocore

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)149-153
Number of pages5
JournalVeterinary Radiology and Ultrasound
Volume52
Issue number2
DOIs
StatePublished - Mar 2011

Keywords

  • Horses
  • Magic angle
  • MR
  • T1 relaxation time
  • Tendon

ASJC Scopus subject areas

  • veterinary(all)

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