Journal article
Usefulness of a half-fourier acquisition single-shot turbo spin-echo pulse sequence in identifying arachnoid diverticular in dogs
Veterinary Radiology & Ultrasound, Vol.53(2), pp.157-161
2012
Abstract
Single-shot turbo spin-echo sequences are heavily T2-weighted sequences that are exceptionally well suited to evaluate the subarachnoid space. In the T2-weighted fast spin-echo sequences that are used routinely in spinal magnetic resonance (MR) imaging, the subarachnoid space is not well differentiated from the surrounding epidural fat, which could lead to decreased detection of lesions of the subarachnoid space such as arachnoid diverticula. Our purpose was to determine the added value of a single-shot turbo spin-echo sequence in identifying cystic lesions of the subarachnoid space in dogs. MR images of six dogs with a confirmed arachnoid diverticulum and 24 dogs with other spinal disease were included. Six observers were asked to interpret only T2-weighted images initially, and in a second session, T2-weighted and half-Fourier acquisition single-shot turbo spin-echo (HASTE) sequences. The MR images were anonymized, and no signalment, history, or clinical information was provided. Without the HASTE sequences, 25% of arachnoid diverticula were identified. Adding the HASTE sequence increased the diagnosis of arachnoid diverticulum to 52.8%. The resulting difference, after adding the HASTE sequence, of 27.8% was statistically significant (P = 0.002). No false-positive diagnoses of arachnoid diverticulum were made with either sequence. Although sensitivity in this study was likely artificially low, the significantly increased detection rate of arachnoid diverticula when using HASTE imaging indicates that this sequence is a valuable addition to MR imaging protocols for the canine spine.
Details
- Title
- Usefulness of a half-fourier acquisition single-shot turbo spin-echo pulse sequence in identifying arachnoid diverticular in dogs
- Authors/Creators
- G.S. Seiler (Author/Creator) - North Carolina State UniversityI.D. Robertson (Author/Creator) - North Carolina State UniversityW. Mai (Author/Creator) - University of PennsylvaniaW.R. Widmer (Author/Creator) - Purdue University West LafayetteJ. Suran (Author/Creator) - University of PennsylvaniaS. Nemanic (Author/Creator) - Michigan State UniversityC.R. Lamb (Author/Creator) - Royal Veterinary CollegeJ. Lang (Author/Creator) - University of BernJ.L. Johnson (Author/Creator) - Duke Comprehensive Cancer Center, Durham, NC.D.E. Thrall (Author/Creator) - North Carolina State University
- Publication Details
- Veterinary Radiology & Ultrasound, Vol.53(2), pp.157-161
- Publisher
- Blackwell Publishing Inc.
- Identifiers
- 991005539975807891
- Copyright
- © 2012 Veterinary Radiology & Ultrasound
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- 3 Agriculture, Environment & Ecology
- 3.232 Veterinary Sciences
- 3.232.1715 Canine Orthopedics
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