摘要:

Serial radiographic examinations were used to assess the incidence of bilateral and unilateral pneumothorax and its resolution following the introduction of air into a pleural space in each of 24 adult mix‐breed dogs. Twenty‐two (92%) dogs developed bilateral pneumothorax and two dogs (8%) developed unilateral pneumothorax. Volumes of air equal to 5 ml/kg, 15 ml/kg, and 45 ml/kg of body weight had resolved in all dogs developing bilateral pneumothorax by 7, 10, and 14 days, respectively. The vertical beam left lateral recumhent and the expiratory horizontal beam ventrodorsal views were the most effective radiographic views for the detection of pneumothorax. Separation of the visceral and parietal pleural surfaces on the horizontal beam ventrodorsal view was a better indication of small amounts of air in the pleural spaces than separation of the heart from the sternum on the vertical beam lateral view. The right lateral recumbent view, regardless of heam orientation, was most sensitive for the detection of differences in the amount of air in the pleural spa

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02063.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

It was the intent of this study to define which, if any, radiographic observations corresponded with specific causes of diffuse infiltrative small bowel disease and if radiographic findings could differentiate inflammatory disease from neoplastic disease and either of them from normal. Bowel spasticity, luminal narrowing, and thumbprinting tend to indicate the presence of tumor more often than inflammatory disease. Increased bowel gas in cats and barium adhesion in dogs and cats suggest that a component of enteritis is present. Decreased bowel gas in dogs is more often associated with obstructive disease, but is not helpful in differentiating diffuse inflammatory disease from diffuse neoplastic disease. While several observations that can foster differentiation of neoplastic from inflammatory disease were found, this study also indicated that the UGI lacks a high degree of predictive value other than to indicate the presence of infiltrative small bowel disease.

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02064.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02065.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02066.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02067.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

Sialography of the bovine mandibular and parotid salivary glands was performed by injecting iodinated, water soluble contrast medium into the respective ducts. The anatomy of the above mentioned salivary glands was studied on cadaver heads. The mandibular duct enters the oral cavity on the ventral surface of the sublingual caruncles, which are located medial to the orifice of the ventral sublingual gland duct. The parotid gland duct enters the oral cavity on the cheek opposite the upper 2nd molar (Sth cheek tooth). Prior to applying sialography to live animals, the technique of catheterization, injection and radiography had to be developed, which was carried out on cadaver heads. Subsequently the technique was applied to 5 live animals. The animals were sedated, the mandibular and parotid ducts catheterized, and contrast medium was injected into each gland. Latero‐lateral radiographs were made immediately after the injection. The normal bovine mandibular and parotid glands, as depicted on sialograms, have a multilobutated appearance in cadaver heads, but in the live animal only the ducts and their smaller branches could be identified. The parotid duct leaves the deep surface of the rostral end of the gland and courses along the border of the masseter muscle before it enters the mouth. The mean diameter of the duct was 4.2 ± 0.3 mm. The mandibular duct is composed of a rostral and a caudal branch. The caudal branch describes a semi circular turn prior to joining the rostral branch. The mean diameter of the main duct was 2.8 ± 0.4

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02068.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

Precise localization of the needle tip during CT‐guided percutaneous biopsy is considered to be a key element of a successful procedure. To ensure accuracy, the true needle tip must be differentiated from a false or simulated tip which appears when the CT slice encompasses only the shaft of an angled needle. By obtaining images of an aspiration biopsy needle inserted vertically into a phantom and then incrementally tilting the gantry, the authors were able to compare the characteristic features of the true tip to the simulated tip. The true tip was abrupt and distinct and had an adjacent flame‐like low density artifact. The simulated tip was indistinct and tapered, yet still produced the adjacent artifact. We concluded that the shape and distinctness of the end portion of the needle itself, rather than the attendant artifact, were the most reliable criteria for accurate needle tip identificat

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02069.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

A technique for computed tomography (CT)‐guided percutaneous biopsy described for use in humans was adapted to the dog and cat and is evaluated in 14 patients. Nine retrobulbar, 1 cranial mediastinal and 4 pulmonary masses and 1 hilar lymph node were biopsied in 13 dogs and 1 cat. Tissue samples sufficient for diagnosis were obtained in 12 of the 15 lesions. Diagnoses were made following cytologic (3/12) or histopathologic (3/12) evaluation or both (6/12) and included retrobulbar lymphoma, carcinoma, spindle cell sarcoma and suppurative inflammation; pulmonary carcinoma, granuloma and eosinophilic/histiocytic inflammation; nasal carcinoma, thymoma and metastatic carcinoma of a hilar lymph node. In each patient, the needle tip was identified within the lesion on the CT image. The primary limitation was non‐diagnostic samples in 3 of 15 lesions due to necrosis or insufficient tissue. Complications were minor. In addition to biopsy guidance, CT imaging provided information not obtainable with fluoroscopy or ultrasonography which assisted in tumor staging and therapy planning. Although a larger number of patients and biopsy locations would be required for a thorough assessment, the free‐hand technique described in this preliminary report appeared to be a safe and useful option of biopsy guidance in the dog an

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02070.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

A normal equine carpus was used for computed tomography and magnetic resonance imaging. The structures outlined were identified and described. The two techniques were compared. This anatomic description could be helpful as a basis for clinical exams.

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02071.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY

摘要:

This report describes a presumed traumatic splenic hematoma in a six‐year‐old neutered male Greyhound presented for abdominal pain, vomiting, and anorexia. Multiple right‐sided rib fractures and minimal pneumothorax were detected on radiographs. Using ultrasonography, an irregular, mixed anechoic and hypoechoic splenic mass was detected. Based on history and ultrasonographic findings, a traumatic splenic hematoma was diagnosed. In follow‐up ultrasonographic evaluations there was progressive, and ultimately, complete resolution of this lesion. The animal was clinically normal at ten week follow‐up and remains healthy. Clinical, radiographic, and ultrasonographic features of splenic hematomas are discussed, with emphasis on the changing ultrasonographic appearance over time. The different imaging modalities used in people to diagnose traumatic splenic hematoma are

ISSN:1058-8183    

DOI:10.1111/j.1740-8261.1994.tb02072.x

出版商:Blackwell Publishing Ltd    

年代:1994

数据来源: WILEY