AGREEMENT BETWEEN T2 AND HASTE SEQUENCES IN THE EVALUATION OF THORACOLUMBAR INTERVERTEBRAL DISC DISEASE IN DOGS

作者：Mankin Joseph M^*; Hecht Silke; Thomas William B

来源：Veterinary Radiology & Ultrasound, 2012, 53(2): 162-166.

DOI：10.1111/j.1740-8261.2011.01894.x

• dog
• HASTE
• intervertebral disc disease
• MRI
• spinal cord compression

The purpose of this study was to compare half-Fourier-acquisition single-shot turbo spin-echo (HASTE) and T2-weighted (T2-W) sequences in dogs with thoracolumbar disc extrusion. MRI studies in 60 dogs (767 individual intervertebral disc spaces) were evaluated. Agreement between T2-W and HASTE sequences was assessed for two criteria: presence of an extradural lesion and treatment recommendation. There was moderate agreement between T2-W and HASTE sequences as to presence of an extradural lesion (kappa = 0.575). HASTE was in agreement in 96.1% of the sites where no extradural lesion was identified on T2-W images, but only in 58.1% of the sites where extradural lesions were identified on T2-W images. There was also moderate agreement between T2-W and HASTE sequences as to treatment recommendations (kappa = 0.476). HASTE was in agreement in 98.4% of the sites where a lesion was considered nonsurgical on T2 but only 82.1% of sites a lesion was considered surgical on T2. In 1.0% of sites considered not surgical and in 9.8% of sites considered equivocal based on T2-W images, a surgical lesion was identified on HASTE. Acquisition of a HASTE sequence in addition to conventional sequences may be beneficial in determining the severity of spinal cord compression in some cases when evaluating the canine spine.

• 出版日期2012-4