ISSN:0091-2751    

DOI:10.1002/jcu.1870060402

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.1870060403

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

年代:1978

数据来源: WILEY

摘要:

AbstractA comparison of the gray scale characteristics of 119 intra‐abdominal cystic masses was performed. Each cystic mass was evaluated with regard to: (1) The presence or absence of internal echoes, septa, and fluid‐fluid levels; (2) The appearance of the wall; (3) Conformity to adjacent organs and, (4) Changes in the surrounding soft tissues. Abscesses, hematomas, lymphoceles, urinomas, and necrotic tumors were evaluated. Necrotic tumors and some abscesses and hematomas have specific sonographic characteristics. In most cases, a definite diagnosis cannot be made from the sonographic appearance; however, in conjunction with the clinical history, the differential diagnosis can be narrowed to a couple of cystic lesions among the many that may be found in the abdomen. The diagnosis can be confirmed by aspiration under ultrasound. A comparison between these cystic masses and pancreatic pseudocysts, renal cysts, and ovarian cysts was m

ISSN:0091-2751    

DOI:10.1002/jcu.1870060404

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

年代:1978

数据来源: WILEY

摘要:

AbstractAdvanced glaucomatous excavation of the optic nervehead can be demonstrated reliably with contact B scan ultrasonography; large physiologic cups do not produce an abnormal optic nervehead pattern. Demonstration of a depression at the surface of the optic nerve insertion must be interpreted as indicative of glaucomatous excavation but should not be used as a contraindication to surgery.

ISSN:0091-2751    

DOI:10.1002/jcu.1870060405

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.1870060406

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

年代:1978

数据来源: WILEY

摘要:

AbstractA new method for determining the area of the gestation sac by thread planimetry is described. Mean weekly values with two standard deviations were determined on a series of 237 measurements of gestation sac area, age five to 11 weeks, in normal pregnancies. The gestation sac area grows curvilinearly from 1.85 cm2at five weeks to 15 cm2at 11 weeks. The mean diameter was calculated from the gestation sac area by using an adequate approximation of the irregular gestation sac shape to a circle of the same area. The dependence of the mean gestation sac diameter on gestation age is defined by the regression equation y = 0.46x − 0.95 and the correlation factor r = 0.92. Practical applications of gestation sac planimetry include the determination of gestation age in early pregnancy, and the follow‐up of growth or determination of delayed growth in disturbed or failed early pregna

ISSN:0091-2751    

DOI:10.1002/jcu.1870060407

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

年代:1978

数据来源: WILEY

摘要:

AbstractThe index of predictability of estimated gestational age (EGA) and birth weight (BW) from biparietal diameter (BPD) was tested in 1333 normal pregnancies; 96% of the patients were black. The correlation BPD and actual weeks to delivery was 0.834, r2= 69.5%. Confidence limits were established and a nomogram for EGA was derived. Our nomogram and two similar ones were compared. The overall correlation between them was good, but that for specific BPD and EGA was not. In addition, our BPD values were smaller for corresponding gestational ages in other nomograms. The overall accuracy of estimated delivery date was ± 1.6 weeks. We were not able to predict birth weight at all from a single, random BPD measurement. We have demonstrated the serious limitations that exist in the prediction of gestational age from previously established nomograms. We infer that this error is even greater when homogeneous populations are so studied. We suggest that any published BPD‐EGA or BPD‐BW nomogram be given close, intensive statistical scrutiny, within the population studied, before it is used. When such scrutiny is not possible, serial sonographic determinations, or longitudinal use of growth charts, would be more accept

ISSN:0091-2751    

DOI:10.1002/jcu.1870060408

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

年代:1978

数据来源: WILEY

摘要:

AbstractTo determine the effect of development of ultrasonographic guidance techniques on the frequency of amniocentesis, we compared two two‐year periods before and after the use of ultrasound. Statistically significant decreases in both the number of amniocenteses ordered and the number performed were observed. We concluded that ultrasound has been judiciously used and has not prompted an increased use of amniocentesis merely because of improved ease and safety. A slight decrease in the perinatal mortality rate mitigates against any compromise in the standard of antenatal car

ISSN:0091-2751    

DOI:10.1002/jcu.1870060409

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

年代:1978

数据来源: WILEY

摘要:

AbstractAn informal survey of 25 obstetrics and gynecology practices that use real time B scan ultrasound equipment was carried out to assess the economic and patient‐care impact of such equipment. From this informal survey, it can be seen that the incorporation of real time B scan ultrasound scanning into private practice has become economically feasible and useful for the daily clinical management of obstetric patients. The implications and economics of such changes for obstetric health care costs remain to be assesse

ISSN:0091-2751    

DOI:10.1002/jcu.1870060410

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

年代:1978

数据来源: WILEY

摘要:

AbstractThe principal ultrasonic signs of death of the fetus in the first 12 weeks of pregnancy are reviewed and illustrated. Several new signs, one probably due to CO2in the conceptus, are recorded. The use of two‐dimensional B scanning and multiplanar stereoscopic sonar is mad

ISSN:0091-2751    

DOI:10.1002/jcu.1870060411

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

年代:1978

数据来源: WILEY