ISSN:0091-2751    

DOI:10.1002/jcu.1870050102

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

年代:1977

数据来源: WILEY

摘要:

AbstractSixty‐five patients were studied for the presence of aortic insufficiency by auscultation, conventional M mode echocardiography (echo), range‐gated pulse Doppler flowmeter (Doppler), and supravalvular aortic angiography. Aortic insufficiency was demonstrated angiographically in 49 patients, of which eight (16 per cent) were missed by auscultation. Echo missed 20 (41 per cent), and Doppler missed seven (14 per cent). Only two (4 per cent) were missed by auscultation and Doppler combined. All methods were highly specific, but the combination of auscultation and Doppler was the most sensitive noninvasive method for detecting aortic insufficie

ISSN:0091-2751    

DOI:10.1002/jcu.1870050103

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

年代:1977

数据来源: WILEY

摘要:

AbstractAn ultrasonic multitransducer scanner has been developed. It works in combination with a conventional echocardiograph and is capable of instant dynamic cross‐sectional imaging of the heart. A 10 cm wide area is scanned by 50 parallel sound beams, spaced 2 mm apart, at a frame rate of 36 per second. The equipment is described and preliminary clinical experience is reported. The scanner has been used for routine heart examinations and for obstetrical and abdominal scanning as wel

ISSN:0091-2751    

DOI:10.1002/jcu.1870050104

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

年代:1977

数据来源: WILEY

摘要:

AbstractFetal biparietal diameter measurements were obtained simultaneously by gray scale and bistable ultrasonography. The bistable presentation was measured from leading edge to leading edge, while the gray scale presentation was measured from leading point to leading point and middle to middle of the band of echoes defining the fetal head. Statistical analysis of 50 patients demonstrated good reproducibility of the biparietal diameter measurement by each method and intraobserver variation fell well within the acceptable range. In all but one patient differences in measurements between observers and measurement methods were trivial and of no clinical significance. In the patients in whom there was a statistically significant difference, the variability was from 1 to 2 mm with the exception of one patient in whom the variability was about 4 mm.

ISSN:0091-2751    

DOI:10.1002/jcu.1870050105

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

年代:1977

数据来源: WILEY

摘要:

AbstractHigh‐frequency diastolic oscillation of the anterior mitral leaflet is a common echocardiographic feature in aortic regurgitation. We have studied a group of 56 patients with aortic regurgitation in whom diastolic oscillation of the anterior mitral leaflet was present. Thirty‐one of these had similar diastolic oscillation of the posterior leaflet; occasional patients demonstrated oscillation of the interventricular septum or chordae tendineae. The presence of these diastolic oscillations did not correlate with the presence of the Austin‐Flint murmur. We conclude that diastolic oscillation of left ventricular structures other than the anterior mitral leaflet can be recorded on echocardiograms of patients with aortic regurgiation. The mechanism responsible for these oscillations is not known; several possibilities are disc

ISSN:0091-2751    

DOI:10.1002/jcu.1870050106

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

年代:1977

数据来源: WILEY

摘要:

AbstractWith the development of gray scale, the appearance of pancreatic anatomy and its relationship to surrounding structures can be demonstrated more effectively. Gray scale has made it possible to identify such vessels as the portal vein, superior mesenteric vein, superior mesenteric artery, splenic vein, etc. This makes it possible to identify the pancreas more precisely. The normal pancreas appears to have a fairly specific echo pattern. The pancreas scanning techniques used in this study include the oblique, transverse, and longitudinal sections. Oblique views are especially useful.

ISSN:0091-2751    

DOI:10.1002/jcu.1870050107

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

年代:1977

数据来源: WILEY

摘要:

AbstractMetastatic involvement of the adrenal glands is a frequent complication of bronchogenic carcinoma, occuring in up to 33 per cent of these patients. Examination of ten patients with adrenal metastases revealed large adrenal masses, occuring bilaterally in five. Five of these patients were examined using the standard bistable technique. These patients demonstrated largely echofree masses with only occasional scattered internal echoes. The remaining five patients were examined with the gray scale technique. With the added resolution afforded by the use of gray scale, the masses in these patients showed a more uniform distribution of echoes. Presence of a margin between the kidney and the mass, and displacement of the kidney inferiorly, posteriorly, and laterally is used to differentiate between upper pole renal masses and those of adrenal origin. Autopsy confirmation was obtained in six of the patients.

ISSN:0091-2751    

DOI:10.1002/jcu.1870050108

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

年代:1977

数据来源: WILEY

摘要:

AbstractVarious estimates abound as to the incidence of conjoined (Siamese) twins, but they are indeed uncommon. The probability of their occurance has been calculated to be once in every 12,000 to once in every 100,000 deliveries. Although uncommon, the antepartum diagnosis can be extremely important to the twins and the mother, if only to spare the trauma of a trial by labor. The findings, both radiographic and ultrasonic, are presented herein.

ISSN:0091-2751    

DOI:10.1002/jcu.1870050109

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

年代:1977

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870050110

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

年代:1977

数据来源: WILEY

摘要:

AbstractThe ultrasonic appearance of extra‐amniotic blood clot simulating placenta previa is presented. The single case presented is the most illustrative and best documented example of this phenomenon in a series of 10 patients. The ultrasonic characteristics of this phenomenon are discusse

ISSN:0091-2751    

DOI:10.1002/jcu.1870050111

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

年代:1977

数据来源: WILEY