ISSN:0091-2751    

DOI:10.1002/jcu.1870120103

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120104

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120102

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120105

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120118

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

年代:1984

数据来源: WILEY

摘要:

AbstractThe size, shape, margins, and structure of the ovaries, as observed in 26 patients with polycystic ovarian disease were analyzed, and uterinelovarian ratio (maximum antero‐posterior diameter of uterine fundus divided for longitudinal diameter of ovary) was calculated. The maximum surface area of the organs ranged from 9.5 cm2to 17.3 cm2(average value 12.9 cm2). A “roundness index” (minimum diameter × 100/maximum diameter) was calculated in order to evaluate the shape: it ranged from a value of 100 in perfectly rounded ovaries to a value of 54 in ovaries of oval shape. The ovarian structure was characterized by many small cysts of the same dimensions in 19 cases; in two patients there was a predominant cyst; in five cases it appeared as many thick echoes arranged along parallel lines. The uterinelovarian ratio was always equal to or less than 1. Correlation tests for size, shape of the ovaries, patient's age, and duration of symptoms were highly significant. This leads one to suppose that both of these ultrasonic findings are a function of the duration of the disease and that polycystic ovarian disease, once established, is the cause of progressive enlargement of these

ISSN:0091-2751    

DOI:10.1002/jcu.1870120106

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

年代:1984

数据来源: WILEY

摘要:

AbstractThe technique reported here uses a simple electronic system adaptable to a standard manual echograph with the aim of obtaining a numerical index of echogenicity. The index is the ratio of the average echo amplitude within a gated portion of tissue at a given depth to the average echo amplitude within the same gated portion measured under the same conditions on a phantom filled with a “tissue‐mimicking” material. A theoretical analysis shows that the index depends not only on the attenuation coefficient and the backscattering coefficient of the tissue but also on the depth of the measurement. It is demonstrated that it is feasible to measure the attenuation coefficient using the current system, and the reproducibility of the index measurement is evaluated on a normal th

ISSN:0091-2751    

DOI:10.1002/jcu.1870120107

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

年代:1984

数据来源: WILEY

摘要:

AbstractIn the preceding article, the measurement of an index of echogenicity has been described. In this article, we present the mean value and standard deviation of this index in normal thyroid and pathological cases. It appears that the index is very significantly lowered in Hashimoto's disease compared to its value in normal thyroids and simple goiters. The advantage of this index in other cases such as Graves' disease, subacute thyroiditis, and thyroid nodules is discussed.

ISSN:0091-2751    

DOI:10.1002/jcu.1870120108

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120109

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120110

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

年代:1984

数据来源: WILEY