Article (Scientific journals)
Magnetic resonance signal changes during time in equine limbs refrigerated at 4 degrees C.
Bolen, Géraldine; Haye, Dimitri; Dondelinger, Robert et al.
2010In Veterinary Radiology and Ultrasound, 51 (1), p. 19-24
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Keywords :
foot, horse, magnetic resonance imaging, preservation, temperature; pied, cheval, imagerie par résonance magnétique, préservation, température
Abstract :
[en] When ex vivo magnetic resonance (MR) imaging studies are undertaken, specimen conservation should be taken into account when interpreting MR imaging results. The purpose of this study was to assess MR changes during time in the anatomic structures of the equine digit on eight cadaver limbs stored at 4 degrees C. The digits were imaged within 12 h after death and then after 1, 2, 7, and 14 days of refrigeration. After the last examination, four feet were warmed at room temperature for 24 h and reimaged. Sequences used were turbo spin echo (TSE) T1, TSE T2, short tau inversion recovery (STIR), and double-echo steady state (DESS). Images obtained were compared subjectively side by side for image quality and signal changes. Signal-to-noise ratio (SNR) was measured and compared between examinations. There were no subjective changes in image quality. A mild size reduction of the synovial recesses was detected subjectively. No signal change was seen subjectively except for bone marrow that appeared slightly hyperintense in STIR and slightly hypointense in TSE T2 sequence after refrigeration compared with day 0. Using quantitative analysis, significant SNR changes in bone marrow of refrigerated limbs compared with day 0 were detected in STIR and TSE T2 sequences. Warming at room temperature for 24 h produced a reverse effect on SNR compared with refrigeration with a significant increase in SNR in TSE T2 images. After 14 days of refrigeration a statistically significant decrease of SNR was found in bone marrow in TSE T2 and DESS sequences. The SNR in the deep digital flexor tendon was not characterized by significant change in SNR.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Bolen, Géraldine ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Département clinique des animaux de compagnie et des équidés
Haye, Dimitri
Dondelinger, Robert ;  Centre Hospitalier Universitaire de Liège - CHU > Imagerie médicale
Busoni, Valeria  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Imagerie médicale
Language :
English
Title :
Magnetic resonance signal changes during time in equine limbs refrigerated at 4 degrees C.
Publication date :
2010
Journal title :
Veterinary Radiology and Ultrasound
ISSN :
1058-8183
eISSN :
1740-8261
Publisher :
American College of Veterinary Radiology, Raleigh, United States - North Carolina
Volume :
51
Issue :
1
Pages :
19-24
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 March 2010

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