ISSN:0091-2751    

DOI:10.1002/jcu.1870200102

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

年代:1992

数据来源: WILEY

摘要:

AbstractBecause of the fluid‐filled lungs in the fetus, the ultrasound beam can penetrate to the root of the pulmonary artery perpendicularly. Using M‐mode echocardiography, the following dimensions were measured: the pulmonary and aortic valve excursion in 19 fetuses, and the pulmonary and aortic root internal diameter in 70 fetuses, between 18 and 42 weeks, menstrual age. The measured dimensions were then correlated with the biparietal diameter. The correlation coefficients for the measurements ranged from 0.873 to 0.892. Regression analysis showed that the best fit of the data was a linear model from which the 5% and 95% confidence limits were derived for individual predictions of the arterial dimensions. The ratios of the pulmonary/aortic valve excursion and the pulmonary/aortic internal diameter were approximately 1 : 1. These results are of potential value in the prenatal detection of great arterial valve or root disea

ISSN:0091-2751    

DOI:10.1002/jcu.1870200103

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

年代:1992

数据来源: WILEY

摘要:

AbstractWe describe placement of a double pigtail cystogastric stent in 5 patients with pancreatic pseudocyst using real‐time ultrasonography and fluoroscopy as guidance techniques. This was done as a two‐step procedure. First, a transgastric drainage catheter was placed for a period of six days. All the patients continued to have high drainage output and the cyst size decreased, as seen sonographically. Simultaneous barium meal and sinogram were then done to measure the distance between the posterior gastric wall and the cyst. A polyurethane double pigtail stent of appropriate size was then introduced to achieve cystogastric drainage. The cyst resolved in all the patients by four weeks to six weeks, when the stent was removed endoscopically. There was no recurrence of pseudocyst during follow‐up for 6 months to 13 months. None of the patients suffered any complication. Cystogastric drainage using a double pigtail stent is an easy and safe alternative to surgical cystogastro

ISSN:0091-2751    

DOI:10.1002/jcu.1870200104

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

年代:1992

数据来源: WILEY

摘要:

AbstractImage‐directed Doppler measurement of superior mesenteric artery blood flow in volunteers was validated in two artificial models with either a venous or an arterial flow profile. In the “venous” model, the Doppler device overestimated the real flow velocity by 86 ± 7%, and in the “arterial” model by 24 ± 9%. The areas under the time‐frequency curves (AUCs) from the arterial model were measured by planimetry. A correction factor of 1.47 between flow velocities calculated after planimetry and real flow was established. Correction for this factor resulted in a flow velocity of 19.5 ± 4.7 cm/s and a blood flow rate of 377 ± 166 ml/min in

ISSN:0091-2751    

DOI:10.1002/jcu.1870200105

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

年代:1992

数据来源: WILEY

摘要:

AbstractWe review our two‐year experience with ultrasound‐guided fine needle aspiration biopsy of omental pathology. Eleven patients were referred for biopsy of omental abnormalities. Biopsy was performed without complication in all cases and the asprates were positive for malignancy in 9. The discharge diagnosis was ovarian carcinoma in 6 patients, adenocarcinoma of unknown origin in 1, lymphoma in 1, and carcinoma of the colon in 1. The technique requires the use of a linear array transducer for biopsy guidance, and is safe, rapid, and easy to perf

ISSN:0091-2751    

DOI:10.1002/jcu.1870200106

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

年代:1992

数据来源: WILEY

摘要:

AbstractIn a prospective series of 72 patients, clinical and ultrasonographic examination of the thyroid gland were compared in detail. Normal‐sized lobes were differentiated from enlarged ones both by inspection and by palpation. When lobar size was assessed by palpation, the estimate was most clearly influenced by increase in width. The correlation between two examiners in lobe size assessment was significant. In the classification of thyroid disease as diffuse, solitary, or multinodular, clinical examination and ultrasonography correlated significantly. However, only one third of the clinically solitary nodules proved to be solitary by ultrasound examination. Of 77 separate nodules, 43 escaped detection on clinical examination. Of these 43, 14 nodules exceeded 2 cm in diameter. It is concluded that the use of ultrasonography frequently alters the primary evaluation of thyroid nodularity based on palpatio

ISSN:0091-2751    

DOI:10.1002/jcu.1870200107

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

年代:1992

数据来源: WILEY

摘要:

AbstractDoppler ultrasound was used to study ophthalmic and middle cerebral artery flow velocities at different ambient lighting conditions in 28 preterm infants in the first week of life. We found significant increases of ophthalmic and middle cerebral artery blood flow velocities when ambient light was increased from moderate to intense. Flow velocities in the ophthalmic artery increased significantly more than in the middle cerebral artery. Doppler ultrasound studies of ophthalmic blood flow velocity may assist in answering the intriguing question whether light‐induced changes of ocular perfusion play a role in the development of retinopathy of prematurit

ISSN:0091-2751    

DOI:10.1002/jcu.1870200108

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

年代:1992

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870200109

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

年代:1992

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870200110

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

年代:1992

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870200111

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

年代:1992

数据来源: WILEY