摘要:

AbstractBetween 1 July and 31 December, 1985, 53 patients, clinically suspected of having deep venous thrombosis (DVT), were prospectively studied by B‐scan ultrasound prior to lower‐limb venography. Criteria for a positive ultrasound examination included visualization of frank clot, failure of the vein to collapse with compression, and absence of normal phasic flow with pulse Doppler sampling. All (100%) of the contrast venograms were considered of diagnostic quality. Fifty of the 53 ultrasound examinations (94%) were considered diagnostic. Of the 50 patients having venous ultrasound of diagnostic quality, contrast venography was positive in 25 and negative in 25 for DVT. Venous ultrasound was correct in 46 patients, for an accuracy of 92% (46/50). Sensitivity was 88% (22/25), specificity was 96% (24/25), the positive predictive value was 96% (22/23), and the negative predictive value was 89% (24/27). The single most useful sign of thrombosis in ultrasound examinations was the failure of the involved vein to collapse with compression. Venous ultrasound appears to be highly accurate in the detection of deep venous thrombosis of the lower extrem

ISSN:0091-2751    

DOI:10.1002/jcu.1870160102

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

年代:1988

数据来源: WILEY

摘要:

AbstractFetal growth after 37 weeks menstrual age was investigated by comparing ultrasound estimates of fetal weight with corresponding weights of newborns. Using a weight estimation equation with minimal systematic error, evidence was found that fetuses delivered at term do not increase in weight the last two weeks before delivery. This change in fetal growth is regarded as a biological process that is needed to prepare the fetus for its life after birth. Only one of three subsets, that of estimated weights below 3000 g, showed significant weight increase after 37 weeks. This subset had, however, on average the longest scan‐delivery interval. We conclude that conventional birthweight standards are influenced both by a cessation of fetal growth approximately two weeks before delivery and by an association between fetal size and the duration of gestatio

ISSN:0091-2751    

DOI:10.1002/jcu.1870160103

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

年代:1988

数据来源: WILEY

摘要:

AbstractA method for measuring the cross‐sectional area (CS area) of the peroneal nerve muscle groups (PNMG) by ultrasonography is presented. The method has a good reliability and can be performed easily. The mean value of the ratio (× 100) of the right‐sided PNMG CS area to the left‐sided PNMG CS area in right‐handed normal subjects was 98%, with a standard deviation of 8.5%. The normal range for this value was 81%−115% (mean ± 2 SD). Examples of these measurements in patients with peroneal pareses during denervation and reinnervatio

ISSN:0091-2751    

DOI:10.1002/jcu.1870160104

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

年代:1988

数据来源: WILEY

摘要:

AbstractA “bullet”‐shaped head, characterized by flattening in the parietal regions with pointing of the frontal bones, was noted in ultrasound examinations of fetuses with neural tube defects. In a series of 12 fetuses with spinal defects, this finding was present in nine. This abnormal head shape is a useful pointer to the spinal l

ISSN:0091-2751    

DOI:10.1002/jcu.1870160105

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

年代:1988

数据来源: WILEY

摘要:

AbstractHemobilia consists of an arteriobiliary fistula, usually due to central liver rupture with bleeding into the biliary tree. It is due to trauma in over 50% of cases, with an increasing incidence of iatrogenically caused hemobilia. The sonographic findings in two cases of traumatic hemobilia are presented and the literature is reviewed. These findings include clot within the gallbladder and the extrahepatic ducts, liver hematoma, and aneurysm of the hepatic artery.

ISSN:0091-2751    

DOI:10.1002/jcu.1870160106

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

年代:1988

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870160107

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

年代:1988

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870160108

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

年代:1988

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870160109

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

年代:1988

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870160110

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

年代:1988

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870160111

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

年代:1988

数据来源: WILEY