Comparison of ultrasound, computed tomography, and magnetic resonance imaging in detection of acute wooden foreign bodies in the canine manus.
We evaluated the diagnostic sensitivity of ultrasound, nonenhanced computed tomography (CT) and nonenhanced magnetic resonance (MR) imaging in detecting wooden foreign bodies in the canine manus. Identical wooden splinters were manually inserted into 30 cadaver canine manus, and the limbs were evaluated using ultrasound, CT, and MR imaging by independent observers. All sites were rated as positive or negative for the presence of a foreign body, and observer certainty was scored on a 1-10 scale. Using receiver operating characteristic analysis, CT was the most accurate modality for detection of wooden foreign bodies overall and within each of the three individual regions, followed by ultrasound and MR imaging, respectively. Ultrasound evaluations were most limited in the metacarpal pad, where distal acoustic shadowing from the pad surface hindered evaluation of the tissues in some specimens.
Department of Small Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, Virginia 24061, USA. ober@vt.edu
Christopher P
CP
Ober
Jeryl C
JC
Jones
Martha Moon
MM
Larson
Otto I
OI
Lanz
Stephen R
SR
Werre
D000818:Animals; D002102:Cadaver; D004285:Dogs; D005121:Extremities / Q000000981:diagnostic imaging; D005547:Foreign Bodies / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000662:veterinary*; D008279:Magnetic Resonance Imaging / Q000379:methods / Q000592:standards / Q000662:veterinary*; D012372:ROC Curve; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods / Q000592:standards / Q000662:veterinary*; D014463:Ultrasonography / Q000379:methods / Q000592:standards / Q000662:veterinary*; D014934:Wood