ISSN:0091-2751    

DOI:10.1002/jcu.1870060103

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

年代:1978

数据来源: WILEY

摘要:

AbstractThe UI Octoson can provide accurate compound and simple scan cross sectional views of the heart. Sections taken in the transverse, sagittal, and other planes normal and parallel to the long axis of the heart are useful for providing full information that may be obtained by the examination. The views allow the visualization and measurement of most major structures of the heart, giving a more complete description of the geometry of the heart.

ISSN:0091-2751    

DOI:10.1002/jcu.1870060104

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

年代:1978

数据来源: WILEY

摘要:

AbstractPrevious studies relating mean velocity of circumferential fiber shortening (VCF) to heart rate suggested a linear correlation. Since there is considerable variability in the heart rate of normal subjects and in patients with myocardial disease, a normalization of VCF to heart rate could possibly increase the reliability of this echocardiographic parameter of myocardial function. In 106 normal subjects, a linear correlation between VCF and heart rate was confirmed (r=0.87). Values normalized to an arbitrary heart rate of 60/min by the calculated regression were called “relative velocity of contraction” (RVC). Because of the independence of RVC from heart rate, the RVC shows an obviously smaller physiological variation than VCF. Two hundred seventy‐six patients were grouped and classified according to hemodynamic and angiographic parameters. These parameters correlated closer to RVC than to VCF. In addition, RVC gave definitely superior diagnostic information in separating patients with cardiac abnormality from normal individuals than di

ISSN:0091-2751    

DOI:10.1002/jcu.1870060105

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

年代:1978

数据来源: WILEY

摘要:

AbstractThe interaction of the scan rates of ultrasonic scanning and television recording systems often causes portions of the resultant television image to be either over‐ or under‐scanned. This results in objectionable bright and dark sectors within the ultrasonic image on a television monitor during single‐frame playback. The usual method for dealing with this problem is to exchange time resolution for image quality when preparing pictures for analysis or presentation. Time resolution can be preserved by operating the ultrasonic scanner at a scan rate one‐half of the television frame rate and phase locking the ultrasonic scanner to the television system so that each angular scan of the ultrasonic system is initiated coincident with the beginning of each televisio

ISSN:0091-2751    

DOI:10.1002/jcu.1870060106

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

年代:1978

数据来源: WILEY

摘要:

AbstractThe dynamic aspects of the uterus have hitherto gone unrecognized by ultrasonographers. The inherent contractility of the uterus produces dynamic artifacts on static echograms that may lead to serious misdiagnoses. Four cases are presented which illustrated these dynamic changes. Time‐lapse echography is proposed as a method of assessing uterine dynamics and improving diagnostic accurac

ISSN:0091-2751    

DOI:10.1002/jcu.1870060107

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

年代:1978

数据来源: WILEY

摘要:

AbstractA series of seven cases of acute renal failure is presented in which sonographic study of the kidneys provided diagnostic information not otherwise obtainable. Ultrasonic imaging should be among the first diagnostic procedures applied in cases of acute unexplained renal failure because it provides rapid answers to the most urgent management problems — whether there is an obstructive component, and what is the potential for recover

ISSN:0091-2751    

DOI:10.1002/jcu.1870060108

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

年代:1978

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870060102

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

年代:1978

数据来源: WILEY

摘要:

AbstractA new technique is described for delineating pelvic structures by using a distended bladder in combination with a water enema. The distended urinary bladder, which acts as a sonic window to the pelvis, fully defines only the portion of structures that abut against the surface. With fluid in both the bladder and rectosigmoid colon, and occasionally the cecum, a ‘sandwich effect’ can be obtained, resulting in a more complete definition of interposed structures. Questionable masses that might be feces in the bowel can be easily distinguished from significant pathology. This new technique has the potential for increasing accuracy of diagnosis of pelvic masses and delineating tumor extension of masses arising in such pelvic organs as the bladder, prostate, and ute

ISSN:0091-2751    

DOI:10.1002/jcu.1870060109

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

年代:1978

数据来源: WILEY

摘要:

AbstractSixteen patients with a “phrygian cap” deformity of the gall bladder seen with oral cholecystography were further evaluated with both bistable and gray scale ultrasound. The bistable technique produced internal echoes that were suspicious of gall stones. When this same area was reevaluated with the more accurate gray scale technique, the folded‐fundus deformity was clearly visua

ISSN:0091-2751    

DOI:10.1002/jcu.1870060110

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

年代:1978

数据来源: WILEY

摘要:

AbstractPatients with orbital varices form a diagnostically important group of those referred for ultrasonic study of orbital proptosis. Two cases are presented in which diagnosis of dilated orbital blood vessels was established by B scan ultrasonography. The echographic appearance of normal and dilated orbital vessels is discussed.

ISSN:0091-2751    

DOI:10.1002/jcu.1870060111

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

年代:1978

数据来源: WILEY