ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00766.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Magnetic resonance (MR) images of the canine brain were acquired during investigation of dogs with neurologic disease. A paramagnetic contrast medium was used for enhancement. MR provided images with excellent contrast between grey and white matter, as well as brain tissue and cerebrospinal fluid. Good resolution and anatomic detail of the canine brain were obtained. A series of images was compiled and labelled as a reference for MR anatomy of the canine brain.

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00767.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00768.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

The abilities of pulmonary angiography, digital subtraction angiography and ventilation‐perfusion scintigraphy (V/Q) to detect experimental acute pulmonary emboli were evaluated in a group of 18 research dogs. Emboli were produced by forceful intravenous injection of clotted blood. In five dogs, emboli were labeled with thallium‐201 prior to reinjection so that embolus position could be confirmed on scintigraphic studies.Studies were independently reviewed by three observers. Results were combined so that the relative sensitivity, specificity, and accuracy of each imaging technique could be compared using chi‐square and receiver‐operating characteristic curve analysis. Digital subtraction angiography and V/Q studies proved to be significantly more specific and accurate than conventional pulmonary angiography. V/Q studies were uniformly of good to excellent quality while the quality of digital subtraction angiography studies was variable depending on the adverse effects of respiratory motion. It was concluded that ventilation‐perfusion scintigraphy is the best available method to screen dogs suspected of having pulmonary thromb

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00769.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Persistent hypercalcemia in the dog is most commonly seen as a paraneoplastic syndrome or in association with widespread osteolytic lesions. In high concentrations calcium is a potent nephrotoxin and may cause severe and irreversible renal damage. The ultrasonographic changes in the kidneys of three dogs with hypercalcernic nephropathy are described'and compared with the changes described in the same human condition. It is suggested that ultrasound could be a useful technique for evaluation of the severity of renal damage and the potential return of renal function in such instances.

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00770.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Canine kidney measurements were obtainedin vivousing ultrasound before and after anesthesia and were compared with direct caliper measurements at laparotomy. Following excision, the kidney dimensions were also measured ultrasonically in a water bath and the results were used to calculate kidney ‐volume by a modified parallel planimetric method and three variations of a prolate ellipsoid method. The calculated volume was compared with actual kidney volume determined by volume displacement. All methods were found to underestimate actual volume so that a linear correction of ultrasonically calculated volume was required to predict actual volume. The modified parallel planimetric method and a prolate ellipsoid method using height and width determinations cranial and caudal to the renal pelvis were the best models. The prolate ellipsoid model was chosen for subsequent kidney volume calculations because of its simplicity. The noninvasive calculation of kidney volume using ultrasound was sufficiently accurate to be clinically useful, particularly when serially evaluating kidney size changes in the same do

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00771.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00772.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Collagenase‐induced lesions of the superficial digital flexor tendon were monitored using diagnostic ultrasound and subsequently compared with gross and microscopic findings. The postinjury sonograms demonstrated hypoechoic or anechoic areas corresponding to areas of hemorrhage and necrosis. The size of the lesion increased and the echogenicity decreased with increasing units of collagenase injected into the tendon. As postinjury time increased, echogenicity increased, which corresponded to fibrous‐tissue invasion and collagen deposition. The extent of tendon injury produced correlated with the amount of collagenase injected into the tendon. Diagnostic ultrasound is useful in evaluating injury and healing in collagenase— induced tendi

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00773.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00774.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Osseous development of the carpus of six clinically normal lambs was studied radiographically from birth to 18 months of age with the aim of forming a standard radiographic evaluation and reference for the sheep carpus.Radiographic data consisted of 200 radiographs. Dorsopalmar and lateromedial projections were made daily during the first week, then weekly until the sixth month, and finally monthly until 18 month of age. Ten radiographs were selected to illustrate normal development of the carpus.The distal ulnar epiphysis reached the ulnar carpal bone at the third week, but remained separate from the ulnar diaphysis until six months of age. The ulnar epiphysis was radiographically fused with the ulnar diaphysis at thirteen months of age.

ISSN:0196-3627    

DOI:10.1111/j.1740-8261.1989.tb00775.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY