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Relieving the amount of physical stress sonographers experience every day was a key driver motivating vendors to enhance their existing lines of ultrasound systems for RSNA 2003. In addition to a handful of new systems and features revealed, the units got more compact, but better in performance - one company even paved the way for the introduction of wireless technology into ultrasound.

Siemens Medical Solutions announced at RSNA a release of performance advancements for its Acuson Sequoia ultrasound system. Currently available on the Sequoia 512, the release includes further expansion of Siemens' TEQ technology, which in addition to producing a two-dimensional image, it now offers instant optimization for spectral Doppler imaging. According to Siemens, this enhanced technology reduces the amount of time sonographers spend adjusting for patient-specific variables.

In addition, the enhancements include a new 1024 transducer, a high frequency, small footprint probe for neonatal and pediatric imaging, as well as spatial compounding plus, a real-time, steered image compounding technique.

Siemens showcased its new fourSight 4D ultrasound system that permits real-time display of 3D images and will be integrated into the Sonoline Antares ultrasound system along with two new MultiHertz 4D transducers. A StellarPlus upgrade was announced for the Antares system as well, which includes the new PX4-1 matrix-array transducer for transcranial and abdominal imaging and digital clips that preserve image quality throughout the exam process in a DICOM standard format.

GE Medical Systems at RSNA displayed its family line of Logiq ultrasound systems at the show, from its full-sized premium scanner - Logiq 9 - to their compact hand carried system - Logiq 3.

Logiq 9 has been enhanced with new features, the company announced, including CrossBeam, speckle reduction imaging (SRI) and VoiceScan.

CrossBeam extends the system's spatial compounding technology by featuring simultaneous side-by-side displays, support for high-frequency coded harmonics and selectable number of compounded angles. A voice-activated control feature, VoiceScan, is triggered when physicians and sonographers talk into a wireless headset, allowing them to interact with the scanner and have it perform more than 150 actions.

SRI technology, now available on Logiq 9, was unveiled at the show as a means to reduce the speckle inherent in ultrasound imaging, improving overall appearance and contrast of the images.

"Our family of scanner products are really complete, beginning with the Logiq 9, which is the high end leadership in radiology, Logiq 7, Logiq 5, 3 and the laptop version - Logiq Book," says Robert Thompson, global marketing manager for GE. "What's unique about the family is that they all have the same user interface. The Logiq 9 has the latest technology and it's migrated into the other systems over time."

The Logiq 3 is the newest addition to the family, introduced this year.

Philips Medical Systems at RSNA touted improvements to its EnVisor. Tagged as its fastest-selling ultrasound system ever, EnVisor has been upgraded to include QuickSCAN intelligent technologies, six new transducers, on-line OB trending and more international languages. With a system cost of less than $100,000, EnVisor's new transducers expand EnVisor's clinical utility to include small parts, vascular, radiology, obstetrics(OB)/gynecology (GYN), and cardiology.

The latest upgrade to the Philips HDI 4000 system combines patented High Definition Imaging with live 3D (4D) imaging and data management tools for broad clinical utility in the OB/GYN practice. Making 3D volume acquisition and manipulation easier, the system is now equipped with twice the volume rendering speed for improved 3D exam workflow. Also improved are the device's 2D, 3D and MPR resolution.

Wireless technology and Toshiba America Medical Systems paired at RSNA 2003. The company highlighted a number of technological advancements on Aplio, its high-end ultrasound system.

Iassist, the newest component to Aplio, is driven by Bluetooth wireless technology. It enables remote operation of the entire ultrasound system. Similar in look and feel to a television remote control, the Iassist controller can engage the system from several feet away and is capable of customizing and sharing clinical protocols between other Aplio systems.

Toshiba also equipped the ultrasound device with a complete range of transducers that