摘要:

AbstractAbdominal complications were evaluated with ultrasonography in 20 patients who received marrow‐ablative chemotherapy and bone marrow or blood stem cell transplantation for the treatment of hematologic malignancies. Ultrasonographic findings compatible with veno‐occlussive disease of the liver, cytomegalovirus infection of the colon, hepatic lesion of graft‐versus‐host disease, and cyclophosphamide‐induced hemorrhagic cystitis were demonstrated in 6 of these patients. In addition, ascites, pleural effusion, gall bladder wall thickening, and hepatosplenomegaly were easily detected. Since ultrasonography is noninvasive and can be repeated, ultrasonographic studies are useful for evaluating and monitoring abdominal complications which are frequently encountered in these transplant

ISSN:0091-2751    

DOI:10.1002/jcu.1870190602

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

年代:1991

数据来源: WILEY

摘要:

AbstractIn a cross‐sectional study, umbilical artery velocity waveforms were recorded in 214 low‐risk pregnancies at 7 weeks to 16 weeks, menstrual age, by means of transvaginal color and pulsed Doppler ultrasonography. In all the cases studied, end diastolic velocities were absent until the 10th week. From this age onward end diastolic velocities were present in a percentage of pregnancies, progressively increasing with gestation and reaching 100% at 15 weeks. Similarly, the percentage of cardiac cycles in which end diastolic velocities were absent progressively decreased with advancing menstrual age. The normal range for the pulsatility index was constructed and a quadratic function was found to optimally fit its fall during gestation. No differences in pulsatility index values were found at these menstrual ages in 12 pregnancies that later developed intrauterine growth retardation and/or pregnancy‐induced hypertension, suggesting that placental alterations causing abnormalities in umbilical velocity waveforms occur later in gest

ISSN:0091-2751    

DOI:10.1002/jcu.1870190603

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

年代:1991

数据来源: WILEY

摘要:

AbstractIn an in vitro study, 10 gallbladders of adult pigs and 6 gallbladders of lambs, all removed immediately after slaughtering, were stimulated in a water bath by electric means to induce active contraction. Gallbladder emptying was followed by ultrasonography employing five measurement procedures: (1) gallbladder width, (2) longitudinal planimetry, (3) transverse planimetry, (4) ellipsoid method, and (5) sum of cylinders method.In an in vivo investigation, gallbladder emptying of 30 volunteers (12) healthy subjects, 18 diabetics) was evaluated in the same way after ingestion of a fatty meal. Gallbladder width was found to be unsuitable to estimate the decrease in gallbladder volume due to a nonlinear relation of the parameters. Longitudinal planimetry tended to be less valid than transverse of planimetry in assessing gallbladder volume reduction.The most valid estimation of gallbladder volume decreases was obtained by the two three‐dimensional procedures. However, in neither in vitro nor in vivo could a significant difference between the sum of cylinders method and the ellipsoid method in determining relative volume reduction be established.We conclude that a three‐dimensional measurement procedure should be used for valid assessments of gallbladder motility. However, according to our data there is no advantage in using the time‐consuming sum of cylinders method compared to the simple ellipsoid m

ISSN:0091-2751    

DOI:10.1002/jcu.1870190604

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

年代:1991

数据来源: WILEY

摘要:

AbstractAn in vitro sonographic model was developed to simulate the transvaginal sonographic appearance of hair‐containing cystic teratomas of the ovary. Two groups of patients with ovarian teratomas were compared: group A—consisting of 32 patients scannedbeforethe simulation model was used, and group B—consisting of 25 patients in whom the diagnosis of hair‐containing ovarian teratomas was madeafterthe simulation model experience. The positive predictive value of transvaginal sonography in correctly diagnosing this type of tumor was 27/32 (84%) in group A and 25/25 (100%) in group B. By using this simple in vitro simulation model, the preoperative diagnosis of ovarian cystic teratomas by transvaginal sonography was made very accurate, enabling prospective planning of the type of operation and its

ISSN:0091-2751    

DOI:10.1002/jcu.1870190605

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

年代:1991

数据来源: WILEY

摘要:

AbstractThe thickening of the gallbladder wall in patients with ascites is commonly related to hypoalbuminemia and/or portal hypertension. To evaluate the pathogenetic role of these two factors, we correlated gallbladder wall thickness (GBWT) with the albuminemia and the serum–ascites albumin gradient (SAAG), an index of portal hypertension, in 47 patients with ascites caused by cirrhosis of the liver or abdominal malignancy. We found a thickened gallbladder wall in 30/47 patients. The correlation between GBWT and SAAG was 0.64 (n= 47p<0.001). No correlation was found between GBWT and albuminemia (r= 0.04). We suggest that the sonographic finding of ascites and gallbladder wall thickening should be considered a valuable sign of transudative ascites and of portal hypertension whatever its caus

ISSN:0091-2751    

DOI:10.1002/jcu.1870190606

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

年代:1991

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870190607

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

年代:1991

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870190608

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

年代:1991

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870190609

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

年代:1991

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870190610

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

年代:1991

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870190611

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

年代:1991

数据来源: WILEY