نتایج جستجو برای: tissue harmonic imaging

تعداد نتایج: 1349927  

Journal: :Heart 2000
M J Monaghan

As with so many important discoveries in science, the significant improvements in echocardiographic image quality generated by second harmonic imaging were discovered almost by chance. Sound signals, including ultrasound transmitted through tissue, usually contain harmonics. These are additional frequencies, at multiples of the main frequency (called the fundamental). Therefore, second harmonic...

2000
MARK J MONAGHAN

As with so many important discoveries in science, the significant improvements in echocardiographic image quality generated by second harmonic imaging were discovered almost by chance. Sound signals, including ultrasound transmitted through tissue, usually contain harmonics. These are additional frequencies, at multiples of the main frequency (called the fundamental). Therefore, second harmonic...

Journal: :Diagnostic and interventional radiology 2014
Lars Kamper Alexander Sascha Brandt Hendrik Ekamp Matthias Hofer Stephan Roth Patrick Haage Werner Piroth

PURPOSE We aimed to evaluate a standardized ultrasonography (US) algorithm for the visualization of pathologic para-aortic tissue in retroperitoneal fibrosis (RPF). MATERIALS AND METHODS Thirty-five patients with lumbar RPF of typical extent, as determined by abdominal magnetic resonance imaging, were included. Examinations were conducted using standardized abdominal US with axial sections ob...

Journal: :archives of cardiovascular imaging 0
marie paule bernadette n’cho-mottoh department of emergency, abidjan cardiology institute, abidjan, ivory coast; department of emergency, abidjan cardiology institute, abidjan, ivory coast. tel: +22-507821541, fax: +22-521259210 komlavi yayehd department of emergency, abidjan cardiology institute, abidjan, ivory coast coulibaly iklo department of emergency, abidjan cardiology institute, abidjan, ivory coast justin ben koffi department of emergency, abidjan cardiology institute, abidjan, ivory coast arnaud kouadio ekou department of emergency, abidjan cardiology institute, abidjan, ivory coast roland aka n’guetta hemodynamic department, abidjan cardiology institute, abidjan, ivory coast

conclusions large-scale studies on the healthy black african population could assess the relationship between diastolic dyssynchrony and changes in myocardial performance related to racial differences. results the frequency of some dyssynchrony markers was similar to that of other studies. the difference between maximal time-to-peak systolic velocity and minimal time-to-peak systolic velocity w...

ژورنال: :مجله دانشکده پزشکی اصفهان 0
حسن شمیرانی دانشیار، گروه داخلی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. کژال کریمی دستیار، گروه داخلی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. رضا مددی استادیار، گروه داخلی- قلب، دانشکده ی پزشکی،دانشگاه علوم پزشکی کردستان، سنندج، ایران.

مقدمه: در مطالعات تجربی و بالینی، پس از انجام percutanouse coronary angioplasty (pci)، چه در فاز اولیه و چه در فاز دیررس، بهبودی عملکرد دیاستولی left ventricle (lv) اتفاق می افتد. از آن جا که فلوی دیاستولی میترال، که توسط pulse wave (pw) اندازه گیری می شود، محدودیت هایی دارد، به تازگی از tissue doppler imaging (tdi) که یک روش ساده، حساس و ارزان قیمت می باشد، برای ارزیابی عملکرد دیاستولی بطن چپ ...

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