MAGNETIC RESONANCE IMAGING OF CANINE DEGENERATIVE LUMBAR SPINE DISEASES     

Marjatta  Kärkkäinen  DVM  Dr. med.vet.  Lauri U.  Punto  MD  DVM  PhD  Riitta-Mari  Tulamo  DVM  PhD 《Veterinary radiology & ultrasound》1993,34(6):399-404

Degenerative lumbar spine diseases, i.e., sacrolumbar stenosis, intervertebral disk degeneration and protrusion and spondylosis deformans of the canine lumbar spine were studied in eleven canine patients and three healthy controls using radiography and 0.02 T and 0.04 T low field magnetic resonance imaging. The T1 and T2 weighted images were obtained in sagittal and transverse planes. The loss of hydration of nucleus pulposus, taken as a sign of degeneration in the intervertebral disks, could be evaluated in both T1 and T2 weighted images. As a noninvasive method magnetic resonance imaging gave more exact information about the condition of intervertebral disks than did radiography. Sacrolumbar stenosis and compression of the spinal cord or cauda equina and surrounding tissue could be evaluated without contrast medium.  相似文献   

COMPUTED TOMOGRAPHY OF ASPIRATION PNEUMONIA IN A DOG     

Lauri V.  Punto  MD  ScD  DVM  PhD  Timo O.  Nevalainen  DVM  MS  Sirkka A.  Wiljasalo  MD  ScD  Ilkka V. O.  Alitalo  DVM  PhD 《Veterinary radiology & ultrasound》1984,25(1):43-45

A dog with aspiration pneumonia was examined by computed tomography (CT) with 8-mm continuous scans of the chest. The results demonstrated that CT is a useful procedure for evaluating pneumonia, although high cost prevents its routine use. A normal littermate was examined, and normal structures of the chest and chest wall were compared.  相似文献   

LOW FIELD MAGNETIC RESONANCE IMAGING OF THE CANINE CENTRAL NERVOUS SYSTEM   总被引：1，自引：0，他引：1  

Marjatta  Kärkkäinen  DVM  Drmedvet  Matti  Mero  DVM  MD  Pentti  Nummi  MSc  Lauri  Punto  DVM  MD 《Veterinary radiology & ultrasound》1991,32(2):71-74

Magnetic resonance (MR) imaging is a relatively new method of medical imaging. MR studies on the normal canine central nervous system were performed using a low field MR scanner. The regions of interest were the head, neck, and lumbar region. The MR findings in two patients with brain atrophy and cervical neck disc protrusion were also evaluated. Based on our findings it appears that low-field scanners will be satisfactory for use in veterinary diagnostic imaging.  相似文献   

Osteomedullography in Tibial Shaft Fractures of the Dog and Pig1     

L. Punto  J. Puranen  R. E. M. Mokka 《Veterinary radiology & ultrasound》1977,18(4):102-104

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Venous drainage of the femoral neck in Legg Perthes disease and in hip dysplasia. A clinical and experimental study in the dog and pig     

I Alitalo  E Heikkinen  S Paatsama  L Punto  J Puranen  P Virkkunen 《Acta veterinaria Scandinavica》1983,24(3):247-251

Three clinical cases of canine avascular femoral head necrosis and 4 cases of hip dysplasia were examined using intraosseus femoral neck venography. The contrast medium passed initio the diaphyseal bone marrow in all cases. Three growing dogs and 7 growing pigs were examined with the same method, before and after experimental ligation of the femoral veins. Before the venous tamponade, no contrast medium was visible in the femoral neck. The venography performed immediately after ligation showed contrast flow into the femoral neck similar to that seen in the clinical cases of Legg Perthes disease or hip dysplasia. However, a collateral circulation developed within 7 weeks. No more contrast-flow into the diaphysis was observed after that time.Although osteomedullography shows that both in Perthes disease and in hip dysplasia venous drainage has failed, venous tamponade may not induce the onset of the disease.Key words: hip dysplasia, Legg Perthes disease, osteomedullography  相似文献