New ultrasound imager

perfusing cardiac patient during the mensional M-mode and PW/CW time needed to thread a transvenous Doppler capabilities. Although the pacing wire or administer drug therapy. complete imaging system can sit on a tabletop, the Series 100 has dual sector PHYSIO-CONTROL CORP., display, zoom and M-mode scroll, and a REDMOND, WA wide range (2.5, 3.0, 3.5, 5.0 and 1.5 Circle 25 on Reader Service Card MHz) of transducers for adult, pediatric and neonatal applications and peripheral vascular studies. HEWLETT-PACKARD MEDICAL PRODUCTS GROUP, ANDOVER, MA Circle 205 on Reader Service Card

Doppler Ultrasound Tester This new systemallows for quick on-site assessment of Doppler ultrasound equipment to assureaccuracy in critical diagnoses and reduce downtime. The standard parameters that can be tested include distance calibration, registration accuracy, sensitivity and spatial response testing, and verification of Doppler systemcorrection angle and velocity measurement. System components include a dynamic Doppler flow phantom, pump and pulser/control unit, fluid reservoir/ flow monitor and blood mimicking fluid.

Portable Minidefibrillator Small, light and inexpensive, the Liteguard@ minidefibrillator is well suited for even the smallest private practice or for hospitals choosingto have numerous low-cost units in their departments. Its unique design incorporates the contact surface on the bottom of the defibrillator case. The second contact paddle snaps into the top of the case, forming a ready-to-carry unit. The Liteguard releasescounter shocksof up to 300 watt-seconds. Automatic or manual charge time to full power is typically
NUCLEAR ASSOCIATES, CARLE PLACE, NY Circle 115 on Reader Service Card

New Ultrasound lmager

CAMBRIDGE MEDICAL INSTRUMENTS, INC., OSSINING, NY Circle 85 on Reader Service Card

To answer the specific imaging and quantitative blood flow information needs of cardiologists, Acuson designed its Model 128: a hybrid analog/digital computer that processesand forms ex-

Doppler Ultrasound Systems Ultrasound System

Compact, Low-Priced Ultrasound Created for the private office yet powerful enough for the hospital, the HP Series 100 is a low-priced, high performance ultrasound imager with 2-di28F

THE AMERICAN

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OF CARDIOLOGY

The Aloka 633” ultrasound device combines the capabilities of 3 complementary imaging modalities-convex array, linear array and mechanical sector scanning-to improve image quality and operational reliability. The advanced technology used in this systemincludes dynamic frequency and aperture imaging, transmit focal zone enhancement, geometric beam convergence, multiimpedance-matched transducer design and computer-collated data display. COROMETRICS MEDICAL SYSTEMS, INC., WALLINGFORD, CT Circle 245 on Reader Service Card

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ceptional real-time utlrasound images entirely under software control. Its 128 channels of active receivers and transmitters are separately programmable to provide total control of beam formation, focusing, image resolution and clarity. The 128’s fully simultaneous steerable continuous-wave and pulsed Doppler at all velocity scales increasesdiagnostic accuracy and the dual frequency cardiac transducers provide more exam flexibility. ACUSON, MOUNTAIN VIEW, CA Circle 165 on Reader Service Card

orbital Doppler, limb and digit volume pulse recording, maximal venous outflow and capacitance, and all other plethysmographic applications. D. E. HOKANSON, INC., ISSAQUAH, WA Circle 111 on Reader Service Card

Blood Velocimeter High frequency Doppler ultrasound combined with subminiature precision probes now make possiblethe measurement of blood velocity in vesselswith diameters as small as 0.5 mm. The PDV-20 velocimeter sensesdirection of flow as well as velocity and does not require vesselmanipulation. It provides audio output from a built-in speaker and offers 2 quadrature audio signalsfor further signal processing. CRYSTAL BIOTECH, HOLLISTON, MA Circle 105 on Reader Service Card

Electrocardiography

Duplex Ultrasound System The Interspec XL provides pulsed, continuous-wave and high PRF Doppler in a compact package. The Duplex imaging probes have a 2.25 to 1.5 MHz frequency range, with specialty versionsthat combine imaging and pulsed and continuous wave Doppler. New features include complete vascular capabilities, steerable CW, high resolution zoom and variable depth settings.

Doppler Ultrasound lmager

A new real-time ultrasound system, the Aloka 870 provides improved 2-dimensional imaging accomplished with a high density transducer scanning at 60 frames per second. Its full range realINTERSPEC, INC., time dynamic focusing usesa computerCONSHOHOCKEN, PA controlled multifocusing circuit to proCircle 135 on Reader Service Card duce an extremely fine ultrasound beam. The tine memory can store 64 frames Vascular Diagnostic Doppler and reproduce images without loss of A new, noninvasive device to study pe- original resolution, enabling advanced ripheral vascular function, the TL-400 biplane examinations. Totalab System from Hokanson offers continuous-wave Doppler with 3 differ- COROMETRICS MEDICAL ent plethysmographs and a 2-speed SYSTEMS, INC., chart recorder. The unit performs upper WALLINGFORD, CT and lower arterial and venous Doppler, Circle 185 on Reader Service Card carotid Doppler, periorbital and supraTHE AMERICAN

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Doppler Echocardiography Echocardiographic versatility and extended capability characterize the Aloka 725rMsystem. Its 7.5-MHz transducer is able to perform peripheral venous and arterial studies and has OF CARDIOLOGY

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