ISSN:0091-2751    

DOI:10.1002/jcu.1870170902

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

年代:1989

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870170903

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

年代:1989

数据来源: WILEY

摘要:

AbstractCross sectional curves and individual fetal growth curves standards from the Rossavik growth model [P = c(t)k+8(t)] were generated for abdominal and head circumferences, femur diaphysis length and estimated fetal weight from a sample of 59 women with twin pregnancy. These curves were compared to their counterparts in singleton pregnancies. Cross sectional curves of the four fetal anatomic parameters under study fell progressively below the curves for singletons during the last trimester of gestation. In contrast, there were few differences between individual fetal groth curve standards for twin and singleton pregnancies. In 11 of the 59 patients, both methods were used to evaluate fetal growth in the last trimester of gestation. In 5 of these patients, fetal growth was normal by both methods in all 10 fetuses. In the 6 other patients, there were 3 fetuses with anormal estimated fetal weights (EFWs) by both population and individual standards. However, 3 fetuses had abnormal EFWs by populations standards but not by individual standards while the EFW of another fetus was abnormal by individual standards but not by population standards. These results illustrate that the cross‐sectional approach to the assessment of growth in twins can be misleading and may lead to incorrect conclusions concerning the growth of these fetuse

ISSN:0091-2751    

DOI:10.1002/jcu.1870170904

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

年代:1989

数据来源: WILEY

摘要:

AbstractTo provide a more detailed assessment of the growth of twins, the individual second trimester growth patterns of six fetal parameters [HC, AC, FDL, ThC, head cube (A) and abdominal cube (B)] were studied in fourteen sets of normal twins (six monozygotic and eight dizygotic) and sixteen normal singletons using the Rossavik growth model [P = c(t)k+8(t)]. Comparisons of start points and coefficientcvalues indicated no statistically significant differences in the growth processes of twins and singletons in early pregnancy and no detectable effect of zygocity. Comparisons of second trimester growth within sets of twins and randomly paired singletons revealed the presence of differences in feto–placental support. A significant effect of differences in genetic growth potential or maternal support could not be demonstrated, however. These results suggest that with respect to growth, normal twins in the second trimester can be treated as two singletons in the same mothe

ISSN:0091-2751    

DOI:10.1002/jcu.1870170905

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

年代:1989

数据来源: WILEY

摘要:

AbstractEighty‐seven patients and 60 normal children were studied to determine the upper limit of the renal pelvic size in children and its relation to disease and age. The renal pelves were all measured by ultrasonography. Further radiologic examinations were performed on the disease group to confirm the final diagnosis. We found that a 10 mm diameter was the upper limit of the normal renal pelvis. Second, measuring the renal pelvic size on an ultrasonogram was highly reliable in diagnosing obstructive uropathy (100% sensitivity, 90.3% specificity). However, when the ultrasonogram with the 10 mm criterion was the sole diagnostic measure, many nonobstructive hydronephroses cases (26/37) were misdiagnosed. Therefore, other diagnostic tools should be employed. Third, the size of the renal pelvis was not influenced by age in childre

ISSN:0091-2751    

DOI:10.1002/jcu.1870170906

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

年代:1989

数据来源: WILEY

摘要:

AbstractAn echo‐poor band of fat is seen between the anterior surface of the left lobe of the liver and the anterior abdominal wall in 25% of patients undergoing an abdominal scan. A similar appearance can be seen in an anterior subphrenic abscess. Normally, with respiration the liver can be seen to slide deeply to this fat band. If the band is due to subphrenic abscess, there is a differential movement due to fixation of the anterior part of the liver. This feature was seen in 4 patients proven to have subphrenic abscesses. This real‐time sign is helpful in differentiating if the band is due to fat or to subphrenic absc

ISSN:0091-2751    

DOI:10.1002/jcu.1870170907

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

年代:1989

数据来源: WILEY

摘要:

AbstractThe ultrasonographic findings and the use of ultrasonography combined with fine needle aspiration in 4 cases of metastases to the thyroid are reported. The primary neoplasms were bronchogenic carcinoma (2 cases), malignant melanoma (1 case), and renal cell carcinoma (1 case). Ultrasonography demonstrated bilateral (2 cases) and unilateral (2 cases) enlargement of the gland. In 3 cases, the texture of the gland was heterogenous and had hypoechoic areas. In 1 case a homogeneous mass containing calcified focus was seen. Ultrasonography was able to evaluate the extent of the disease in all patients by revealing metastatic nodes or jugular vein thrombosis. Finally, ultrasonography was useful in guiding fine needle aspiration. The potential use of ultrasonography in detection and biopsy of small thyroid lesions in patients with malignant disease is discussed.

ISSN:0091-2751    

DOI:10.1002/jcu.1870170908

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

年代:1989

数据来源: WILEY

摘要:

AbstractIn a prospective study of 123 patients with clinical signs of acute intestinal inflammation, the sensitivity of ultrasonography in diagnosing acute colonic diverticulitis was 84.6% and the specificity 80.3%. The predictive value of a positive and a negative sonogram was 76.0% and 87.7%, respectively. Of the 52 patients with subsequently proven acute colonic diverticulitis, 44 presented sonographically with a thickened (>4 mm) hypoechoic bowel wall. In 15 patients, enlarged fluid‐filled bowel loops were also present. Air‐containing diverticula were demonstrated in 3 patients, abscesses in 8 patients, and colovesical fistulae in 2 patients. Eight large abscesses were successfully treated without emergency surgery by percutaneous sonographically guided evacuation. The described sonographic abnormalities strongly suggest acute colonic diverticulitis, particularly when localized in the left lower abdo

ISSN:0091-2751    

DOI:10.1002/jcu.1870170909

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

年代:1989

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870170910

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

年代:1989

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870170911

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

年代:1989

数据来源: WILEY