ISSN:0091-2751    

DOI:10.1002/jcu.1870210102

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

年代:1993

数据来源: WILEY

摘要:

AbstractTransvaginal color Doppler was performed in 198 volunteer pregnant women whose menstrual age ranged from the fifth to the twelfth week. In all patients an attempt was made to obtain signals from both uterine arteries, peritrophoblastic/retroplacental vessels, umbilical arteries, fetal aorta, intracranial vessels, and corpus luteum flow.With the combination of color and pulsed Doppler transvaginal sonography, detection of vascular structures was greatly facilitated and the amount of time for examination significantly reduced. Flow velocity waveforms were measured and results were analyzed by calculation of the Resistance Index.During the early stage of pregnancy, we were able to locate both uterine arteries in all cases and continuous diastolic shift signal was found. Flow in the peritrophoblastic/retroplacental area was observed with an overall success rate of 94%. Blood flow in the umbilical artery and fetal aorta was visualized by color Doppler starting from the seventh week. Intracranial blood flow could be visualized starting from the tenth week in some cases. Diastolic flow in these vessels was detectable starting from the twelfth week. Corpus luteum flow was found in 148 cases (75%) and the Resistance Index decreased as pregnancy progressed © 1993 by John Wiley&Sons, Inc

ISSN:0091-2751    

DOI:10.1002/jcu.1870210103

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

年代:1993

数据来源: WILEY

摘要:

AbstractThe purpose of this article was to investigate the detection rate of gastroduodenal artery blood flow (GDABF), and to measure its velocity and volume flow rate using Doppler color imaging. The GDABF was detected in 40 of 41 (98%) normal subjects with longitudinal scanning and in 36 (88%) with transverse scanning. The velocity of the GDABF was 21 ± 8 cm/sec (m ± SD) and the volume flow rate was 67 ± 20 mL/min. Without color Doppler, the vascular lumina of the GDA was demonstrated in 27 (66%) subjects by longitudinal scanning and in 26 (63%) by transverse scanning. The hemodynamics of the GDA were revealed noninvasively using Doppler ultrasonography in a patient with a malignant islet cell tumor of the pancreas and one with a ductal cell carcinoma of the pancreas. © 1993 John Wiley&Sons,

ISSN:0091-2751    

DOI:10.1002/jcu.1870210104

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

年代:1993

数据来源: WILEY

摘要:

AbstractWomen with a normal menstrual cycle (n = 21, controls), polycystic ovary syndrome (n = 10) and hypogonadotropic amenorrhea (n = 3) were stimulated with clomiphen‐citrate (4th day to 8th day of the cycle) and with human menopausal gonadotropin (8th day to 11th day). The vascular impedance of the ovary carrying the dominant follicles was monitored by endovaginal pulsed Doppler flow measurement. Simultaneously, serum levels of LH, E2and 17‐OHP were assayed. Contrary to controls, women with polycystic ovary syndrome or hypogonadotropic amenorrhea showed decreased hormone levels and no lowering of the vascular impedance. In controls, the lower pulsatility index is caused by neovascularization around the dominant follicle and by E2‐induced vasodilatation in the ovarian artery. © 1993 by John Wile

ISSN:0091-2751    

DOI:10.1002/jcu.1870210105

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

年代:1993

数据来源: WILEY

摘要:

AbstractA prospective ultrasound study of the renal morphology of 51 neonates with no clinical signs of renal impairment showed transient medullary hyperechogenicity of varying intensity in 37%. These findings were made in the first few postnatal days, were not accompanied by any other echographic changes, and disappeared again within the first week of life. They were encountered twice as often in full‐term as in premature babies. In parallel with this phenomenon, the concentration of Tamm–Horsfall protein, calcium, and uric acid, and the osmolality were determined in the daily urine of 44 of these neonates. The analyses did not provide any definite clues as to the etiology of the ultrasound findings. It is therefore suggested that the term “Tamm‐Horsfall nephropathy or proteinuria” should no longer be used for such sonographic phenomena in the neonatal kidney, but rather, they should be regarded as normal. Furthermore, the term “tubular stasis nephropathy” should be reserved for cases with clinically demonstrable impairment of renal function. © 1993 John W

ISSN:0091-2751    

DOI:10.1002/jcu.1870210106

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

年代:1993

数据来源: WILEY

摘要:

AbstractAdenomatoid tumors are regarded as uncommon neoplasms of the paratesticular tissues, probably of mesothelial origin, and the majority of cases reported have involved the epididymis. Ultrasonography is the method of choice for imaging scrotal pathology, but there are very few data on ultrasound findings in cases of adenomatoid tumors. We report our experience and ultrasound findings regarding 8 intrascrotal adenomatoid tumors–3 cases of a testicular tunica albuginea tumor and 5 cases of epididymal origin. Ultrasonography is recommended as the preoperative imaging method for excluding the possibility of a cystic lesion and for determining the location of the tumor. Local excision is regarded as the treatment of choice. The clinical course of all these tumors was benign, without recurrences. © 1993 John Wiley&Sons, I

ISSN:0091-2751    

DOI:10.1002/jcu.1870210107

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.1870210108

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.1870210109

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.1870210110

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.1870210111

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

年代:1993

数据来源: WILEY