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New Ultrasound Imagers Offer Fast Fetal ECHO.
NEW ORLEANS -- A new generation of portable hand-held ultrasound imagers no bigger than a laptop shows great promise for point-of-care fetal echocardiographic screening, Dr. Margarete Olivier said at the annual scientific sessions of the American Heart Association.
"We envision that [such a device] can be a very useful tool, much like an optical stethoscope, in a situation where one wants to have a quick and focused glance at the fetus and fetal heart," said Dr. Olivier of the Mayo Clinic, Rochester, Minn.
The new point-of-care devices may, in many instances, enable physicians to avoid utilization of conventional echocardiographic equipment for obstetric screening for congenital heart disease. In addition to being far more expensive, standard echocardiographic gear is cumbersome and ill-suited to rapid deployment in pregnant patients in diverse settings such as the antenatal unit, emergency room, and ICU.
The first of these new highly portable devices to have reached the market is the SonoHeart. Its manufacturer, SonoSite Inc., refers to it as a "PUI," for personal ultrasound imager.
Meanwhile, Agilent Technologies Inc. is gearing up to market its first device, which it calls a Small Portable Ultrasound Device, or "SPUD."
SPUDs and PUIs weigh only 5-7 pounds. They consist of a 2.5-MHz transducer, battery and base unit with a small display screen. Compromises made to achieve superportability include a limited number of simplified controls for adjusting imaging depth and gain, an imaging capability limited to 2-D and color Doppler, and inability to store images for later use.
To study the utility of SonoSite's PUI in performing screening fetal echocardiography. Dr. Olivier examined 21 consecutive mothers carrying 22 fetuses ...
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