ISSN:0091-2751    

DOI:10.1002/jcu.1870090214

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.1870090215

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.1870090216

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.1870090217

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

年代:1981

数据来源: WILEY

摘要:

AbstractThe fluid‐filled stomach allows visualization of the gastric wall on real‐time ultrasonic examination. In four cases with small focal gastric wall lesions (two cases with hyperplastic polyps, one with pseudopolypoid lesions, and one with polypoid infiltration of the gastric mucosa by maligant lymphoma), typical ultrasonic pictures were demonstrated. The polypoid lesions were located on the anterior and posterior gastric walls and at the gastric fundus, respectively. All who use the gastric sonic window for imaging the pancreas or the left upper abdomen should be aware that focal gastric lesions are also observa

ISSN:0091-2751    

DOI:10.1002/jcu.1870090202

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

年代:1981

数据来源: WILEY

摘要:

AbstractThe involution of the uterus was studied between 1 and 40 days postpartum utilizing serial ultrasonic scans. All pregnancies and postpartum periods were uncomplicated. The decrease in uterine size was related to a diminution in uterine length. No difference was observed between nullipara and primipara or breast‐ or bottle‐feeding moth

ISSN:0091-2751    

DOI:10.1002/jcu.1870090203

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

年代:1981

数据来源: WILEY

摘要:

AbstractLeft ventricular (LV) wall motion (anterior and posterior) and simultaneous LV pressure were recorded during 30‐second left anterior descending (LAD) or circumflex (CX) coronary artery occlusions in open‐chest dogs to provide an echocardiographic model of the evolution of wall motion changes during myocardial ischemia. Prominent diastolic echocardiographic motion changes of progressive decrease in LV wall rapid‐filling velocities (RFS), slow‐filling velocities (SFS), and increased end‐diastolic diameter were accompanied by a marked increase in initial and end‐diastolic pressures (150% and 70%, respectively; all p<0.05). Early (within ten seconds) and progressive decrease in rate (SES), amplitude (E), and duration (TTR) of systolic motion were noted with an increased systolic diameter (p<0.05). Ischemic regions developed a characteristic pattern with early relaxation followed by a diastolic inward motion (DIM). These observations confirm and extend other investigators' findings on the motion of the ischemic myocardium and may be applicable to responses to transient myocardial ischemia note

ISSN:0091-2751    

DOI:10.1002/jcu.1870090204

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

年代:1981

数据来源: WILEY

摘要:

AbstractDetermination of gestational age without an accurate last menstrual period is difficult. In the later stages of pregnancy, the correlation between fetal biparietal diameter (BPD), as determined by ultrasound, and gestational age is compromised by normal biologic variation in fetal growth rates. The fetal crown‐rump measurement (CRM) by gray‐scale sonography has been described but has not been evaluated using real‐time ultrasound. Currently available tables for determining gestational age from the fetal CRM were evaluated using a linear array real‐time ultrasound system. A normal obstetric population with known menstrual histories, delivery dates, and Dubowitz scores at delivery was used for evaluation. On the basis of this study, Robinson's data listed as “regression analysis values” are suggested for application to real‐time ultrasound. Alternatively, the equation generated from data on the above 86 patients could be used and further evaluated. The fetal CRM appears to be a valid and accurate assessment of ge

ISSN:0091-2751    

DOI:10.1002/jcu.1870090205

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

年代:1981

数据来源: WILEY

摘要:

AbstractA series of 237 patients in the first trimester of pregnancy were examined to derive normal growth curves for fetal crown‐rump length (CRL) and biparietal diameter (BPD) using sector scanner real‐time ultrasound equipment. Conventional B‐scan CRL measurements were obtained from 50 of these patients: In 41 (82%), the values fell within a range ± 5 mm of those of real‐time. Another group of 97 patients between 7 and 13 wk of gestation was then examined in a blind trial to confirm the accuracy of real‐time measurements in estimating gestational age. An estimate was made in 95% of cases to within 4.6 days with CRL and to within 5 days with BPD. A similar comparison was made with both of these dimensions using a comparative nomogram, giving a prediction within 3.9 days in 957percnt; of cases. This method is now used

ISSN:0091-2751    

DOI:10.1002/jcu.1870090206

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

年代:1981

数据来源: WILEY

摘要:

AbstractBiliary obstruction was accomplished by surgically occluding the distal common bile duct in seven rhesus monkeys. Ultrasound scanning at 24‐hour intervals showed that dilation of the common bile duct and gallbladder occurred before elevation of bilirubin or development of jaundice. The bile ducts expanded centrifugally from the obstructing point, with dilation of the intrahepatic ducts occurring several days after the onset of obstruction. After surgical release of the obstruction, the biliary ducts contracted centripetally, with the common bile duct requiring 30–50 days to return to normal s

ISSN:0091-2751    

DOI:10.1002/jcu.1870090207

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

年代:1981

数据来源: WILEY