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Simple Device for Determining an Index of Echogenicity
Author(s) -
Espinasse Pierre,
Desuzinges C.,
Cercassi J. C.
Publication year - 1984
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.1870120107
Subject(s) - echogenicity , imaging phantom , reproducibility , attenuation , amplitude , attenuation coefficient , biomedical engineering , medicine , echo (communications protocol) , nuclear medicine , measure (data warehouse) , coefficient of variation , acoustics , ultrasonography , optics , radiology , statistics , mathematics , physics , computer science , computer network , database
The 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 thyroid.