ISSN:0091-2751    

DOI:10.1002/jcu.1870130102

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractThe histopathological findings at second‐look laparotomy in 20 patients with complete clinical remission of epithelial ovarian cancer were compared with the findings at preoperative ultrasound (US) examination. Discrepancies between pelvic US and histological findings occurred in 4/20 (20%) of the patients, and both the specificity and negative predictive value of US were 89%. Of the two false‐negative studies, one showed only microscopic disease and the other showed a 0.5‐cm nodule. The results of the two false‐positive studies were due to postoperative scarring and adhesions, respectively. Obscuring intestinal gas precluded assessment of para‐aortic nodes in 10 of 16 patients in which data from abdominal (US) evaluation were available. Although the status of residual gynecological organs could be determined in most cases, the study shows that US cannot replace second‐look

ISSN:0091-2751    

DOI:10.1002/jcu.1870130103

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractDoppler ultrasound has been shown to be a useful clinical tool in the noninvasive detection of vascular stenoses, occlusion, or plaques. The presence of atherosclerotic lesions in blood vessel walls can distort the Doppler ultrasonic signal, producing inverted or biphasic tracings. This observation, in fact, has been used frequently as a criterion for the diagnosis of plaque formation and calcification of these lesions. To define the source of this distortion, we have examined the effects of various types of atherosclerotic lesions on the transmitted ultrasonic beam generated by a continuous wave (CW) Doppler ultrasonic probe. These results are compared to the Doppler flow tracings obtained by a CW ultrasonic Doppler flowmeter from blood vessels with overlaying lesions in a mock flow system. It is concluded that severe distortion in the form of beam refraction or diffraction can be produced by calcified lesions, resulting in biphasic or inverted flow signals.

ISSN:0091-2751    

DOI:10.1002/jcu.1870130104

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractAsymptomatic testicular enlargement is common in mentally retarded males. This enlargement includes males with non‐specific forms of mental retardation as well as a subgroup of males who have a chromosomally recognizable feature involving the X‐chromosome (“fragile X” chromosome). We examined the testes of a group of 25 mentally retarded males with macro‐orchidism including both fragile X and nonfragile X patients. Apart from large size, the testes scanned were all normal in appearance. In particular, there was no evidence for neoplasia. There were no distinguishing features between the fragile X and the non‐fragi

ISSN:0091-2751    

DOI:10.1002/jcu.1870130105

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractWhen intestinal obstruction presents with fluid‐filled bowel loops instead of air‐distended loops, subtle elongated masses representing these bowel loops may be missed on plain abdominal radiographs. In these cases, ultrasound will show sausageshaped, cystic structures, with uneven margins representing mucosal folds, distributed throughout the abdomen and sometimes accompanied by peristalsis. These features differentiate fluid‐filled bowel loops from other cystic structures in the abdomen and help make a diagnosis of bowel obstru

ISSN:0091-2751    

DOI:10.1002/jcu.1870130106

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractA 10‐MHz electronic linear array real‐time scanner was developed. The axial resolution was 0.26 mm at the ‐20dB ring down point. The display field was 6.0 cm in width. Excellent high‐resolution sonograms of the thyroid, breast and other diseases were obtained using this

ISSN:0091-2751    

DOI:10.1002/jcu.1870130107

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870130108

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870130109

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870130110

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870130111

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY