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1.
ROBERT H. WRIGLEY BVSc MS DVR MRCVS RICHARD D. PARK DVM PHD LINDA J. KONDE DVM JACK L. LEBEL DVM PHD 《Veterinary radiology & ultrasound》1987,28(6):208-212
Photographic subtraction was made of 38 canine portal venograms to remove the images of the overlying abdominal structures and enhance the radiographic contrast of portal veins. The improved visual quality of the subtracted portogram aided in the detection of portosystemic shunts and intrahepatic portal veins. The subtraction studies revealed portosystemic shunts not detected on the initial portal venogram. 相似文献
2.
Samuel Jakovljevic DVM MSc DVR Nicole MacLaren DVM 《Veterinary radiology & ultrasound》1995,36(5):457-457
3.
ANATOMY OF THE PORTAL AND HEPATIC VEINS OF THE DOG: A BASIS FOR SYSTEMATIC EVALUATION OF THE LIVER BY ULTRASONOGRAPHY 总被引:1,自引:1,他引:0
Carol H. Carlisle MVSc DVR FACVSc Jian-Xin WU MVSc PhD Trevor J. HEATH BVSc MA PhD 《Veterinary radiology & ultrasound》1995,36(3):227-233
The objective of this study was to define, in detail, the anatomy of the portal and hepatic veins in the dog in order to establish a procedure for the systematic evaluation of the liver by ultrasonography. Anatomical details were obtained from the formalin fixed livers of ten dogs. The hepatic and portal veins were removed intact from these livers so that a detailed pattern of distribution could be established and the numbers of branches could be counted. Silastic casts were also made of the hepatic and portal veins of two livers, one in situ and one in which it had been removed. The former was to enable the relationship of the portal to the hepatic veins to be established as closely as possible within the animal and the other to provide a model of the distribution of each venous system within the liver. Contrast medium was infused into two other livers and radiographs taken to establish the relationship of each branch to each lobe. It was found that there was a consistent pattern of venous branching to each lobe of the liver in the dog with little variation between individual specimens. All liver lobes contained definite venous branches so that the left lateral and medial, quadrate, right medial and lateral, caudate and papillary veins could be distinguished in each venous system. We believe that an appreciation of this venous distribution will aid in the systematic evaluation of the liver during ultrasonography by enabling identification of each liver lobe. It should be of value for differentiating portal from hepatic veins and veins from dilated bile ducts. 相似文献
4.
Mike P. Targett MA VetMB PhD MRCVS Elizabeth McInnes BVSc PhD MRC MRCVS Ruth Dennis MA VetMB DVR MRCVS 《Veterinary radiology & ultrasound》1999,40(1):23-26
Magnetic resonance images were acquired of the brain of a 7-year-old male Golden Retriever with hydrocephalus secondary to a medullary lesion. Images were acquired prior to and 4 weeks following surgical treatment for the hydrocephalus, and the dog was euthanased following the second imaging session. The MR images demonstrated a medullary lesion with patchy but predominantly hyperintense signal with both T1- and T2-weighting, within which small areas of low signal were scattered. There was little edema associated with this lesion and no enhancement with gadolinium. Postmortem examination revealed the medullary mass to be a dermoid cyst. Several small nodular lesions were identified within the central nervous system on the magnetic resonance images whose origin was uncertain on postmortem examination. 相似文献
5.
J. F. McConnell BVM&S DVR DipECDVI Cert. SAM MRCVS L. Garosi DVM S. R. Platt BVM&S 《Veterinary radiology & ultrasound》2005,46(1):1-10
The magnetic resonance imaging (MRI) findings of presumed cerebrovascular accident in 12 dogs are described. Fourteen lesions were seen, commonly (11 of 14) within the gray matter of the cerebellar hemispheres or vermis. Thirteen lesions were hyperintense on T2-weighted images (in 11 dogs) and one was hypointense. Eleven of 14 lesions were within the region supplied by the rostral cerebellar artery or one of its main branches and there was no, or minimal, mass effect. Contrast enhancement was only seen in six lesions and was mild in all. Gradient-echo images provided additional information in two dogs. The appearance of infarction in dogs with diffusion-weighted images (DWI) is similar to that in humans, and provided supportive evidence for the diagnosis of infarction in five dogs. The use of gradient-echo and DWI is recommended for the evaluation of suspected cerebrovascular accidents in dogs. Six of the 12 affected animals were spaniels or spaniel crosses, suggesting a possible breed predisposition. 相似文献
6.
Robert H. Wrigley BVSc MS DVR George M. Angleton PhD 《Veterinary radiology & ultrasound》1988,29(5):223-226
Computer programs were developed to record and retrieve the diagnostic findings of a veterinary radiology department. The concluding statements of reports are abstracted into a data file. Records may be retrieved by the computer after selecting any of the following: owner's name, patient number, date, species, breed, sex, age, state of residence, imaging type and diagnosis (word or statement). Also, information retrieved from the hospital financial records (procedures performed) and medical record databases may be combined with imaging report information to provide a powerful tool for clinical research and teaching. 相似文献
7.
R. N. WHITE BSc BVetMed CertVA Diplomate ECVS J. V. DAVIES BVetMed PhD DVR Diplomate ECVS S. P. GREGORY BVetMed PhD DVR 《Veterinary surgery : VS》1996,25(6):503-510
Vaginourethroplasty was performed in six bitches with infiltrative, obstructive urethral disease. The initial clinical signs included dysuria, hematuria, pollakiuria, and stranguria. Diagnosis was based on the clinical signs, plain radiography and contrast vagino-urethrogram examination, and urethral biopsy. Five dogs were diagnosed as having urethral neoplasia; the sixth dog had granulomatous urethritis. In all six dogs, up to 50% of the urethra and the urethral tubercle were resected to ensure adequate surgical margins. One dog was euthanatized 4 months after surgery for recurrence of a transitional cell carcinoma at the surgical site. Long-term resolution of the problem (minimum of 12 months) was achieved in the other five dogs. The frequency of serious complications, including urinary incontinence and ascending lower urinary tract infections, was low. 相似文献
8.
Jean K. Frazho DVM John Graham MVB MSC DVR Diplomate ACVR & ECVDI Jeffrey N. Peck DVM Diplomate ACVS Jacek J. De Haan DVM Diplomate ACVS & ECVS 《Veterinary surgery : VS》2010,39(7):829-832
Objective: To determine if a secondary center of ossification (SCO) of the anconeal process is present in skeletally immature dogs that do not develop an ununited anconeal process (UAP). Study Design: Case series. Animals: Dogs 77–154 days of age with conditions other than developmental disease of the elbow (n=78 dogs; total elbows=100). Methods: Mediolateral radiographic projections of the elbow were reviewed for presence or absence of a SCO of the anconeal process. Results: A SCO was radiographically evident in 16% of elbows from breeds that have been reported to be affected by UAP. The appearance of the SCO was different to an UAP fragment. None of the elbows with SCO of the anconeal process developed UAP. A SCO was not present in any small breed dogs. Conclusions: A SCO of the anconeal process is uncommon in medium and large breed dogs and the presence of a SCO does not indicate that UAP will develop. Clinical Relevance: Because radiographic diagnosis of a SCO of the anconeal process and UAP lesions have distinct appearances, an earlier diagnosis of UAP is possible. 相似文献
9.
Linda J. Konde DVM Robert H. Wrigley BVSc MS DVR MRCVS Richard D. Park DVM PhD Jack L. Lebel DVM PhD 《Veterinary radiology & ultrasound》1985,26(3):74-81
Eight dogs with renal neoplasia were radiographically and sonographically examined. An enlarged, nonopacified kidney was seen on the excretory urogram in four dogs, but differentiation between a solid mass or severe hydronephrosis was not possible. The excretory urogram suggested an avascular lesion in one kidney, but differentiation between solid or cystic disease was not possible. Renal neoplasia was diagnosed in two dogs by excretory urography. Radiographic examination suggested splenic neoplasia in one dog. Solid masses were sonographically diagnosed in all dogs. A metastatic lesion was sonographically diagnosed in the opposite kidney of one dog that was missed on the radiographic examination. Ultrasonography com-plemented radiography as a diagnostic modality in eliciting additional information on renal disease. Sonograms did not allow determination of tumor cell type or whether the tumor was benign or malignant. 相似文献
10.
Wolfgang Henninger DR MED VET E. Mairi Frame BVMS DVR MRCVS Michael Willmann DR MED VET Hubert Simhofer DR MET VET Dieter Malleczek MAG MED VET Sibylle M. Kneissl DR MED VET Elisabeth Mayrhofer PROF DR MED VET 《Veterinary radiology & ultrasound》2003,44(3):269-276
Sinusitis is a common disorder in horses and may result from trauma, dental diseases, or space-occupying lesions. Radiography can only provide a limited amount of information. Computed tomography (CT) has been documented as an alternative imaging method. Eighteen horses (mostly Warmblood) with signs of chronic sinusitis were examined preoperatively with CT to assist in diagnosis of the underlying cause. There was a group of common CT features in horses with dental disease and sinusitis. The first molar was the most frequently affected maxillary cheek tooth. Hypoattenuation of the cementum, destruction of the enamel, and filling of the infundibular cavity with gas were the most frequent CT findings associated with caries. Gas bubbles within the bulging root area or fragmentation of the root in combination with swelling of the adjacent sinus lining were the most important CT features of dental decay. CT findings associated with sinusitis included excessive thickening of the respiratory epithelium in the rostral maxillary sinus; the caudal maxillary sinus was less often involved. The infraorbital canal, the nasomaxillary duct, and the frontomaxillary aperture were usually involved. The maxillary bone, however, especially the facial crest, was involved in nearly every horse, being characterized by endosteal sclerosis, thickening, periosteal reaction, and deformation leading to facial swelling in chronic infections. CT images allowed identification of involvement of individual teeth more clearly to reveal the diseased one for treatment. Three-dimensional imaging allowed improved understanding of the extent and severity of the pathologic change. 相似文献