ISSN:0091-2751    

DOI:10.1002/jcu.1870040302

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

年代:1976

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870040303

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

年代:1976

数据来源: WILEY

摘要:

AbstractThe frequency of mitotic cells in surgically stimulated rat livers in vivo was not affected by one and fiveminute exposures to 2.2 MHz ultrasound at intensities ranging from 60 to 16,000 mW/cm2. These results do not confirm Kremkau and Witcofski's report on mitotic reduction in rat liver similarly exposed to ultrasound.

ISSN:0091-2751    

DOI:10.1002/jcu.1870040304

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

年代:1976

数据来源: WILEY

摘要:

AbstractIn the past few years, echocardiography has emerged as a useful noninvasive clinical tool in cardiac diagnosis. Conventional methods for analyzing echocardiographic data involve time consuming and tedious manual techniques for measuring various distances and computing cardiac parameters of interest. This paper describes a useful method for automating the analysis of M scan echocardiograms both for routine clinical work as well as for special research oriented ultrasonic cardiac studies.Using a GRAF/PEN digitizer interfaced t o a PDP‐11 minicomputer system, relevant points of the ventricular and mitral valve interfaces, R‐R intervals, and time and distance calibration points are entered from hard copies of M scan echocardiograms. The computer then determines all the parameters of interest such as left ventricular (LV) diameters, LV volumes, LV mass, ejection fraction, stroke volume, cardiac output, septa1 and posterior wall dynamics, as well as such mitral valve (MV) parameters as opening/closing velocities, excursions, and areas subtended by both MV leaflets. The data and results are stored on disc or tape and a report of the results is immediately available from a printer for incorporation into the patient's record f

ISSN:0091-2751    

DOI:10.1002/jcu.1870040305

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

年代:1976

数据来源: WILEY

摘要:

AbstractContact B mode ultrasound was used to evaluate 53 patients with malignant lymphoma stages III and IV. The echographic characteristics of retroperitoneal involvement by these lesions were evaluated to establish diagnostic criteria. This method can be used also to evaluate regression of retroperitoneal tumor involvement of paravertebral or paraaortic lymph nodes during anticancer chemotherapy.

ISSN:0091-2751    

DOI:10.1002/jcu.1870040306

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

年代:1976

数据来源: WILEY

摘要:

AbstractFifteen hundred patients were scanned to predict fetal age and weight by biparietal diameter measurement. Three hundred eleven patients had more than one scan. Fortythree small for gestational age (SGA) babies were ultimately delivered in this population. Prenatal ultrasound screening criteria for grouping into appropriate for gestational age (AGA) or small for gestationa1age (SGA) categories were: a only an absolute biparietal diameter below the third percentile for the reference Rochester region population; b only ΔBPD calculated as less than 50 percent of the mean growth rate for the reference population; and c a combination of these two factors. Intrauterine growth retardation was most accurately determined when an absolutely small biparietal diameter was found (at the time of the last ultrasound examination) in a woman with accurate gestational age assessment. Least accurate was the prediction based on one biparietal diameter measurement in a woman with poor clinical dates. A 50 percent false positive detection rate and poor sensitivity to intrauterine growth retardation were found using ultrasound biparietal diameter measurements as a screening test in this manner

ISSN:0091-2751    

DOI:10.1002/jcu.1870040307

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

年代:1976

数据来源: WILEY

摘要:

AbstractThe use of gray scale B mode provides more effective visualization for sonographic evaluation of fetal ascities. Two cases of severely Rh isoimmunized fetuses with hydrops and one fetus with hydrops secondary to chylous ascites are presented to show the ultrasonic features of diagnosis of fetal edema and ascites. Thus, ultrasonic evaluation in known cases of Rh isoimmunization or diabetes provides additional information on the status of the fetus in utero and rapid recognition of fetal hydrops. This additional information aids in the management of the pregnancy and in the determination of the time of delivery.

ISSN:0091-2751    

DOI:10.1002/jcu.1870040308

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

年代:1976

数据来源: WILEY

摘要:

AbstractTwenty patients with pelvic abscesses diagnosed either at surgery or from typical clinical findings underwent sonography. Seventeen of the twenty patients had inflammatory processes of gynecological origin. In the main, two patterns were observed. The more common pattern was a small, round adnexal or cul de sac mass with a slightly irregular border. The other pattern consisted of large, rough‐bordered, multilocular masses that obscured the uterus. In single cases confusion had occurred between pelvic abscesses, fibroids, and chronic ruptured tuba1 pregnancy. The role of ultrasound in the management of patients with tuboovarian abscesses is discusse

ISSN:0091-2751    

DOI:10.1002/jcu.1870040309

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

年代:1976

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870040310

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

年代:1976

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870040311

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

年代:1976

数据来源: WILEY