منابع مشابه
I-46: Color Doppler Assessment in IUGR
Background Fetal growth restriction is the second leading cause of perinatal morbidity and mortality. The incidence of intrauterine growth restriction (IUGR) is estimated to be approximately 5 percent in the general obstetric population. Abnormal uterine artery suggest a maternal cause for the growth restriction where as normal uterine artery Doppler studies suggest that a fetal cause. Use of u...
متن کاملI-44: Color Doppler Imaging in Impotence
Sexual impotent is very common entity and define as inability to induce or maintaining penile erection during sexual intercourse. Studies reveals about 10% of men aged 40-70 years have complete, 17% have mild and 25% have moderate amount of erectile dysfunction. The sexual impotence has different etiology including psychogenic, neurogenic, arteriogenic and venogenic causes. Current studies reve...
متن کاملColor Doppler twinkling artifacts in various conditions during abdominal and pelvic sonography.
OBJECTIVE The aims of this study were to describe the mechanisms likely to be responsible for color Doppler twinkling artifacts and their associated machine factors and to illustrate the various conditions that cause twinkling artifacts and those pitfalls. METHODS We evaluated various sonographic machine-associated factors that influence artifact appearance and identified various conditions t...
متن کاملassessment of regional myocardial displacement via spectral tissue doppler compared with color tissue tracking
background: the recent developments in tissue doppler imaging (tdi) now more than ever permit the quantification of the myocardial function. in the current systems, tissue tracking or displacement curves are generated from color tissue doppler data through the instantaneous temporal integral of velocity-time curves. methods: the purpose of the present study was to assess regional myocardial dis...
متن کاملThe role of the acoustic radiation force in color Doppler twinkling artifacts
PURPOSE The aim of this experimental study was to evaluate whether the acoustic radiation force (ARF) is a potential source of twinkling artifacts in color Doppler images. METHODS Color Doppler images were obtained using a clinical ultrasonic scanner (Voluson e, GE Healthcare) for a high contrast (+15 dB) circular scattering phantom at pulse repetition frequencies (PRFs) ranging from 0.1 to 1...
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ژورنال
عنوان ژورنال: RadioGraphics
سال: 1992
ISSN: 0271-5333,1527-1323
DOI: 10.1148/radiographics.12.1.1734480