摘要:

Shunt fraction was determined using transcolonic123I‐iodoamphetamine (IMP) and portal vein injection of99mTc‐macroaggregated albumin (MAA) in a group of eight dogs with chronic cirrhosis and acquired portosystemic shunts subsequent to total common bile duct ligation. Hepatic parenchymal damage was confirmed by alterations in liver function tests and liver histology. Seven of the eight dogs developed portal hypertension and had angiographic evidence of hepatofugal portal blood flow with multiple peripheral portosystemic anastomoses. Shunt fractions determined in the seven dogs with shunts varied from 39 to 100 using IMP and 45 to 93 using MAA. The remaining dog had normal portal pressure, a normal portal angiogram, and normal IMP and MAA scintigraphic studies. There was an excellent correlation between the two methods of shunt fraction calculation (R2= 0.98) and the line of regression was not significantly different from unity (IMP = 1.09 × MAA ‐

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01805.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Per‐rectal portal scintigraphy using tech‐netium‐99m pertechnetate (99mTcO4‐) was performed in 8 normal dogs before and after surgical creation of a portacaval shunt. Shunt fractions were calculated by computer assisted analysis of dynamic images (IMG) and compared to shunt fractions determined by mesenteric venous injection of radioactive microspheres (MIC). The mean pre‐operative shunt fraction was 1.59% using IMG and 3.00% using MCI. The mean postoperative shunt fraction was 64.56% using IMG and 69.56% using MIC. There was excellent correlation between both methods (r20.94). Per‐rectal portal scintigraphy is an easily performed, inexpensive method to diagnose and quantify portosystemic shu

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01806.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Radionuclide angiography was used to document occlusion of the distal aorta by thromboemboli in two dogs. Findings were confirmed by necropsy. The location of the thrombus corresponded with the scintigraphic lesion. Information obtained by the radionuclide angiogram was instrumental in patient management. We suggest the use of radionuclide angiography as a quick, non‐invasive alternative to contrast angiography in animals suspected of having aortic thromboembolis

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01807.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01808.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Portal blood flow was measured with duplex Doppler ultrasound in ten normal dogs and in ten dogs with hepatic cirrhosis induced by common bile duct ligation 4 weeks previously. Mean portal blood flow velocity in the 10 dogs with experimentally induced hepatic cirrhosis was markedly reduced (9.2 ± 1.70 cm/sec vs. normal 18.1 ± 7.6 cm/sec, p<0.01). Mean portal blood flow was also significantly decreased compared to normal (17.2 ± 4.9 cc/min/kg versus normal 31.06 ± 9.1 cc/min/kg, p<0.01) while portal vein diameter remained unchanged. The dogs with induced hepatic cirrhosis developed extensive extrahepatic portosystemic shunting that was confirmed at necropsy. It was concluded that decreased portal velocity and portal flow which resulted from hepatic cirrhosis was detectable noninvasively with Doppler ultraso

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01809.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

The testicles of ten dogs presented for routine castration were imaged with real time ultrasound. A scanning technique using multiple imaging planes (sagittal, transverse, and dorsal planes) was developed to image the testicles and epididymi. The testes were characterized by a coarse medium echo pattern. The mediastinum testis was consistently seen as a 0.2 cm wide linear hyperechoic structure in the central long axis of the testis. The ability to identify and the appearance of the epididymis was variable. The tail was consistently seen as an anechoic to hypoechoic structure. Ultrasound images were compared for anatomical structure with frozen gross sections. Ultrasonic and gross measurements were made and analyzed. Individual gross and ultrasonic measurements compared favorably. Linear regression coefficients between body surface area versus testicular length and diameter were 0.73 and 0.58 respectively. A Wilcoxin signed rank test for similarity p = 0.33 value was found when comparing the right to the left testicle.

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01810.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01811.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

A urinoma is an encapsulated extravasation of urine. In this case history report, the radiographic and ultrasonographic features of a urinoma in a dog are described. The dog presented with a palpable mass in the right flank which developed following ovariohysterectomy. Urinoma was considered when ultrasonographically, a sharply marginated, anechoic mass immediately caudal to the right kidney, ipsilateral hydroureter and hydronephrosis were detected. Extravasation of contrast medium was not seen during excretory urography. A fluid‐filled retroperitoneal mass adjacent to a transected ureter was found at exploratory laparotomy. The diagnosis of urinoma (para‐ureteral pseudocyst) and hydronephrosis was confirmed histopathologica

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01812.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01813.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Medial patellar desmotomy has been considered a benign surgical treatment in horses with suspected upward fixation of the patella. Our clinic has previously observed radiographic changes in the equine stifle following medial patellar desmotomy but preoperative radiographs were not made and the changes therefore could not be directly associated with the desmotomy. In this report we describe a case with normal stifle radiographs before medial patellar desmotomy. Radiographs made 3 months later demonstrated degeneration of the patella with enthesophytes, osteolysis and bone fragments. It is hypothesized that the lesion developed as a result of lateral rotation of the patella creating stress concentration in the subchondral bone of the distal articular surface of the patella. The pathogenesis of the patellar lesion is thought to be similar to the “gull wing” lesion on the distal palmar aspect of the third metacarpal bone. We recommend a more prudent approach to medial patellar desmotomy in the ho

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1990.tb01814.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY