摘要:

AbstractUltrasonography of prospectively followed chronic hepatitis B patients who developed liver cirrhosis were reevaluated in order to identify the ultrasonographic changes of early cirrhosis. Ultrasonographic features of 29 patients before and after cirrhosis were as follows: portal vein diameter—1.20 cm/1.29 cm (NS); cirrhosis score—5.69/7.52 (p<0.01); spleen size index—21.99 cm2/25.84 cm2(NS). The result suggests that ultrasonographic diagnosis of early cirrhosis is not easy on a single occasion; however, the score system method is helpful in longitudinal follow‐up chronic hepatitis patients. A careful comparison of hepatic parenchymal and surface changes are mandatory. © 1993 John Wiley&S

ISSN:0091-2751    

DOI:10.1002/jcu.1870210502

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

年代:1993

数据来源: WILEY

摘要:

AbstractSeven cases of retroperitoneal neurilemoma confirmed by histology had an ultrasound examination. There were 5 women and 2 men with a mean age of 55. Most of the cases (5/7) had a palpable mass clinically. Of the 7 cases, 4 had a mass with cystic degeneration and internal echoes on sonogram, consistent with the macroscopic findings of tumors. The internal echoes represented blood clots and residual tissue (or septa) in cyst. Or the remaining 3 cases, one showed a confluent lobulated mass, the second had a solitary homogeneous mass with small cysts, and the third one, which was the smallest (4 cm × 4 cm × 6 cm), had a hypoechoic and homogeneous pattern. The sonograms of all 7 cases were consistent with the macroscopic features of the tumors. The sonographic pattern of tumor parenchyma is either homogenously hyperechoic or hypoechoic. Because of the cystic degeneration, hemorrhage, and residual tissue of retroperitoneal neurilemoma, the sonographic pattern was variable. © 1993 John Wiley&Sons, I

ISSN:0091-2751    

DOI:10.1002/jcu.1870210503

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

年代:1993

数据来源: WILEY

摘要:

AbstractImplantable cardioverter defibrillators are being used with increasing frequency for the management of life‐threatening ventricular arrhythmias. In order to determine whether the titanium mesh of the defibrillator patch causes ultrasonographic acoustical interference, 30 patients underwent prospective serial echocardiographic examination. In addition, studies were reviewed to determine whether the defibrillator patches could be visualized with standard two‐dimensional echocardiography. In no patient did the anterior patch produce acoustical interference, and, unless specific measures were utilized (such as a standoff pad, a zoom feature, or a 5‐MHz transducer), the patches were rarely visualized. © 1993 John Wiley&Son

ISSN:0091-2751    

DOI:10.1002/jcu.1870210504

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

年代:1993

数据来源: WILEY

摘要:

AbstractA range‐gated Doppler ultrasound system combined with a real‐time imaging system was used to determine arterial blood velocity values from the fetal and placental ends of the umbilical cord in 269 normal pregnancies between 17 and 40 weeks, menstrual age. The systolic–diastolic ratio (S/D), pulsatility index (PI), and resistance index (RI) were higher at the fetal end compared to the placental end of the cord. The individual differences in these Doppler indices, obtained between the fetal and placental recording sites, were inversely related to menstrual age: S/D:r= −0.38,p<0.001; PI:r= −0.25,p<0.001; and RI:r= −0.15,p<0.01. After normalization for the angle of insonation, the peak systolic velocity was higher and the enddiastolic velocity was lower at the fetal than at the placental end of the cord. It is concluded that routine recordings for Doppler velocimetric indices should take into account the recording site on the umbilical cord in order to reduce methodological sources of variance, especially during midgestation. Furthermore, the data presented here in the form of the median and percentile values are proposed as normal reference values to facilitate this procedure. © 1993 John Wil

ISSN:0091-2751    

DOI:10.1002/jcu.1870210505

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

年代:1993

数据来源: WILEY

摘要:

AbstractWe studied the correlation of ultrasound patterns with laparoscopy and biopsy results in 140 patients with chronic liver disease (CLD). Of the 23 patients with a normal ultrasound pattern (N), biopsies revealed CLD in 18; in the 22 patients with unspecific hepatomegaly (H), biopsies disclosed CLD in 20; and in the 64 patients with a homogeneous bright pattern (HB), biopsies showed CLD in 62. All 22 cases of heterogeneous bright pattern (HTB) and all 9 patients with nodular pattern (ND) had CLD. In conclusion, it appears that the HTB and nodular ultrasound patterns confirm the presence of CLD, the HB pattern is suggestive of CLD, but diagnosis of CLD cannot be made from N and H patterns. © 1993 John Wiley&Sons, Inc

ISSN:0091-2751    

DOI:10.1002/jcu.1870210506

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

年代:1993

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870210507

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

年代:1993

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870210508

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

年代:1993

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870210509

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

年代:1993

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870210510

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

年代:1993

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870210511

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

年代:1993

数据来源: WILEY