ISSN:0091-2751    

DOI:10.1002/jcu.1870090514

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

年代:1981

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870090516

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

年代:1981

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870090517

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

年代:1981

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870090519

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

年代:1981

数据来源: WILEY

摘要:

AbstractThis paper describes the results of a reevaluation of the reliability of a newly developed ultrasonic volume flow meter which was developed by Yoshimura and his co‐workers (1978). Measurements of volume blood flow (cc/sec) by this new technique were compared withmeasurement by the electromagnetic flow meter. Experiments were performed with an in vitro model as well as with physiological pulsatile flow in an animal model. Results of the study indicated a high degree of correlation between values measured by both techniques with a correlation coefficient of 0.99. I believe that this is an important technical development in the field of noninvasive quantitative determination of blood flo

ISSN:0091-2751    

DOI:10.1002/jcu.1870090502

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

年代:1981

数据来源: WILEY

摘要:

AbstractUltrasound has become an accepted diagnostic modality since the late 1950s. Since its introduction as a soft‐tissue imaging method, ultrasound has broadened and assumed many research and clinical roles in medicine. Yet, despite the growing enthusiasm for ultrasound, there has been little written about its growth that brings together the latest areas of clinical utilization and research. To gather this data, we personally researched 32 leading medical centers in the United States. This paper shows where ultrasound stands now and where it is likely to go in the near futur

ISSN:0091-2751    

DOI:10.1002/jcu.1870090503

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

年代:1981

数据来源: WILEY

摘要:

AbstractPolycystic ovaries are usually manifest on an ultrasound study as symmetrically enlarged ovaries containing numerous tiny cysts. The cysts are difficult to detect with conventional contact B‐scanners but are readily detected with high‐resolution, real‐time sector scanners. The cysts range in diameter from 2 to 6 mm and may be arranged inthe periphery of an ovary or throughout the parenchyma.In patients with ultrasonically demonstrated polycystic ovaries (aged 15 to 35 years), there is a spectrum of clinical findings. Halfthe patients have most of the classic signs and symptoms (hirsutism, menstrual irregularity, and obesity) associated with Stein‐Leventhal syndrome. Twenty‐five percent have variants of the syndrome. In another 25%, no clinical abnormality is evident at the time of an ultrasound ex

ISSN:0091-2751    

DOI:10.1002/jcu.1870090504

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

年代:1981

数据来源: WILEY

摘要:

AbstractFetal heart motion was observed by T‐M‐mode echocardiography from the twelfth to fortieth week of gestation in 47 apparently normal pregnancies. In the earliest case (at 12 weeks), cardiac pulsations were recorded in a fetus in which the heart sounds couldnot be detected by Doppler ultrasound. The left and right ventricular dimensionsand left‐to‐right ventricular ratios were determined in 24 of the 35 fetuses in which high‐quality images were obtained. Interventricular septal motion was evaluated in 30 of these 35 fetuses. Potential clinical applications of echocardiography in evaluating fetal status are also

ISSN:0091-2751    

DOI:10.1002/jcu.1870090505

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

年代:1981

数据来源: WILEY

摘要:

AbstractForty‐five children with sickle cell anemia were studied with meticulous cholecystosonograms using a 5‐MHz thyroid transducer. Good‐quality images were obtained. The most informative and useful view was the left‐side‐down decubitus study with the ultrasound gantry angled 45% to the anteroposterior axis. Rotating the patient rapidly through 360 degrees did not increase the information content of the examination. We found that one third of a random group of children with sickle cell anemia will have gallstones and one fifth will have “sludge”. A kinked deformity of the gallbladder may simulate a gallstone. Neither age, sex, weight, physical findings (except for hepatomegaly), nor a variety of biochemical measurements of the blood will be of much value in predicting gallbladder disease in any

ISSN:0091-2751    

DOI:10.1002/jcu.1870090506

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

年代:1981

数据来源: WILEY

摘要:

AbstractEchocardiographic examinations of 21 unselected patients with systemic lupus erythematosus revealed a wide variety of abnormalities. The abnormalities consisted of substantial pericardial effusion in five patients (24%) and a thickened pericardium in six patients (29%);significantly larger left atrial and left ventricular dimensions and significantly smaller ejection fraction percentages, fractional shortening of the left ventricle, and rate of early diastolic mitral valve closure compared to that in a control group of subjects; and paradoxical and hypokinetic movement of the septum in one patient (5%) each.The presence of pericardial effusion and a thickened septum and a decrease in the ejection fraction percentage, fractional shorteningof the left ventricle, and mitral valve diastolic closing velocity showed no correlation with previous hypertension, the presence or absence of anemia, renal failure, serum levels of proteins, and duration of patients' illnesses.Long‐term follow‐up studies to determine the implications of these subclinical cardiac abnormalities using noninvasive techniques (such as echocardiography) is vitally import

ISSN:0091-2751    

DOI:10.1002/jcu.1870090507

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

年代:1981

数据来源: WILEY