| Improved identification of the palmar fibrocartilage of the navicular bone with saline magnetic resonance bursography. | |
| | |
MedLine Citation:
|
PMID: 19999343 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Fibrocartilage degeneration is the earliest pathologic finding in navicular disease but remains difficult to detect, even with magnetic resonance (MR) imaging. We hypothesized that injection of the navicular bursa with saline would improve accuracy of MR imaging evaluation of palmar fibrocartilage. Thoracic limbs were collected from 11 horses within 6 h of death. Imaging was performed with a 1.5 T magnet using sagittal 2D proton density and transverse 3D FLASH sequences with fat saturation. For the purpose of determining sensitivity and specificity of the MR images, fibrocartilage was classified as normal or abnormal, based on combination of the findings of gross and microscopic pathology. Thickness of fibrocartilage was measured on histologic sections and corresponding transverse FLASH MR images before and after injection of saline. A paired Student's t-test was used for comparison of measurements. Partial thickness fibrocartilage loss was present in 6 of 22 limbs. Sensitivity of precontrast MR images for detection of lesions was 100% while specificity was 6%. Saline MR arthrography resulted in both sensitivity and specificity of 100% based on consensus review. Mean histologic fibrocartilage thickness was 0.75 +/- 0.12 mm. Mean fibrocartilage thickness on precontrast transverse FLASH images was 0.93 +/- 0.065 and 0.73 +/- 0.09 mm on postsaline images. The histologic cartilage thickness was signficantly different from that in precontrast images (P<0.001) but not in images acquired after saline injection (P = 0.716). Based on our results, and using pulse sequences as described herein, navicular fibrocartilage can only be evaluated reliably for the presence of partial thickness lesions after intrabursal injection of saline. |
| | |
Authors:
|
Michael Schramme; Zoltan Kerekes; Stuart Hunter; Krisztina Nagy; Anthony Pease |
Related Documents
:
|
14504823 - "mesorectum": the surgical value of an anatomical approach. 15762263 - Computer-assisted fluoroscopic navigation of pedicle screw insertion: an in vivo feasib... 10103293 - Cerebral magnetic resonance imaging and ultrasonography findings after neonatal hypogly... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association Volume: 50 ISSN: 1058-8183 ISO Abbreviation: Vet Radiol Ultrasound Publication Date: 2009 Nov-Dec |
Date Detail:
|
Created Date: 2009-12-14 Completed Date: 2010-04-26 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9209635 Medline TA: Vet Radiol Ultrasound Country: United States |
Other Details:
|
Languages: eng Pagination: 606-14 Citation Subset: IM |
Affiliation:
|
College of Veterinary Medicine, North Carolina State University, Hillsborough Street 4700, Raleigh, NC 27606, USA. michael_schramme@ncsu.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Ankle / radiography* Contrast Media / administration & dosage Euthanasia, Animal Fibrocartilage / radiography* Horse Diseases / diagnosis* Horses Imaging, Three-Dimensional / veterinary Magnetic Resonance Imaging / methods, veterinary* Sensitivity and Specificity Sodium Chloride / administration & dosage Tarsus, Animal / radiography* |
| Chemical | |
Reg. No./Substance:
|
0/Contrast Media; 7647-14-5/Sodium Chloride |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Magnetic resonance anatomy of the proximal metacarpal region of the horse described from images acqu...
Next Document: Magnetic resonance imaging of the canine brain at 7 T.