Gray-scale and color Doppler US findings of amniotic sheets.
نویسندگان
چکیده
PURPOSE To identify the gray-scale and color Doppler ultrasonography (US) findings of amniotic sheets. MATERIALS AND METHODS Among 1201 pregnant patients who underwent detailed second trimester US, nine had amniotic sheets. An amniotic sheet was defined as a shelf-like structure in the uterine cavity with a free edge not attached to the fetus or umbilical cord. There was no major fetal anomaly observed in any patient. Eight patients had solitary amniotic sheets, and one patient had double sheets. All gray-scale and Doppler US features of amniotic sheets were noted. RESULTS The incidence of an amniotic sheet was determined to be 0.75% (ten amniotic sheets were observed in nine patients). On gray-scale US images, amniotic sheets were observed as bands of tissue that originated from the uterine wall with a triangular-shaped base that tapered toward the free edge. A three-layered appearance was identified in seven amniotic sheets. Using Doppler US images, four of ten sheets showed a low-resistance arterial flow, and five of ten sheets showed non-pulsatile venous flows. No vascularization was observed in one patient with a thin, membranous sheet. CONCLUSION Gray-scale US is sufficient for the diagnosis of amniotic sheets because of the typical US characteristics; however, Doppler US findings of amniotic sheets are highly variable. Thus, Doppler US may not be beneficial in the diagnosis of amniotic sheets.
منابع مشابه
Ultra sonographic findings for chronic lateral epicondylitis.
PURPOSE To assess which individual gray-scale and color Doppler US findings and their combination are strongly associated with lateral epicondylitis. Also to determine whether chronic lateral epicondylitis is possible without any positive US findings. METHODS 49 patients (6 bilateral) underwent gray-scale ultrasonic imaging between 2005 to 2007. All had a history of lateral epicondylitis and ...
متن کاملI-42: Advanced Ultrasonic Techniques in The Assessment of Early Human Development
Background: To evaluate the role of 3D, 4D and color Doppler ultrasound (US) in the assessment of early human development. Materials and Methods: 380 women with uncomplicated early pregnancy between 5 and 14 weeks were evaluated by 3D, 4D and color Doppler US. Results: Regression analysis revealed exponential rise of the gestational sac volume with gestational age throughout the first trimester...
متن کاملProstate: high-frequency Doppler US imaging for cancer detection.
PURPOSE To evaluate cancer detection with targeted biopsy of the prostate performed on the basis of high-frequency Doppler ultrasonographic (US) imaging findings versus cancer detection with a modified sextant biopsy approach with laterally directed cores. MATERIALS AND METHODS Sixty-two patients were prospectively evaluated with gray-scale, color, and power Doppler transrectal US performed w...
متن کاملبررسی مقایسه ای ارزش تشخیصی سونوگرافی کالر داپلر و معمولی در تعیین بدخیمی لنف نودهای اگزیلاری در بیماران مبتلا به سرطان پستان
Background & Aims: Due to the high incidence of breast cancer, the use of easy, safe, noninvasive and readily available diagnostic procedures that can accurately determine the initial stages of the disease and its spread is very important. Ultrasonography as a method may be able to realize these goals and to help patients and physicians. The aim of this study was to evaluate diagnostic val...
متن کاملI-41: Imaging Strategy for Diagnosis of Adnexal Masses Including US,CT Scan and MRI
Adnexal masses are spectrum of diseases from benign non neoplastic and neoplastic masses to malignant neoplasms. Endovaginal ultrasonography (US) is the fisrt and invaluable modality for assessment of adnexal masses because it is available and has a high negative predictive value. Important morphologic features are solid (vascularized) tissue, vascular and thick septations, and papillary projec...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Diagnostic and interventional radiology
دوره 18 3 شماره
صفحات -
تاریخ انتشار 2012