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Thứ Sáu, 30 tháng 11, 2012

World’s First Wireless Ultrasound System

Siemens Showcases World’s First Wireless Ultrasound System at RSNA 2012

Wireless transducer technology will expand use of ultrasound into a variety of clinical settings

Press Release: Siemens Healthcare – Mon, Nov 26, 2012 10:00 AM EST

At the 98th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA), November 25-30 in Chicago, Siemens Healthcare (Booth #831, East Building/Lakeside Center at McCormick Place, Hall D) is introducing the ACUSON Freestyle™ ultrasound system that features wireless transducers, eliminating the impediment of cables in ultrasound imaging. To enable this pioneering technology, the system brings to the market a large number of innovations, including acoustics, system architecture, radio design, miniaturization, and image processing. The ACUSON Freestyle system will expand ultrasound’s use in interventional and therapeutic applications, where the technology provides numerous workflow and image quality advantages. The development of wireless ultrasound is in line with the objectives of the Healthcare Sector’s global initiative Agenda 2013 – specifically in the areas of innovation and accessibility.

For image acquisition and processing, the ACUSON Freestyle system employs advanced synthetic aperture imaging technology, an integration of proprietary hardware and software that was specifically developed for the wireless signal transmission of full-resolution digital image data at very high data rates. Focusing on each pixel in the image, this method produces excellent image quality throughout the field of view. This design reduces the transducer’s power requirements, increasing battery life. Wireless real-time ultrasound data transmission is further enabled through the proprietary development of a novel ultra-wideband radio technology, which, operating at a high frequency of 7.8 Gigahertz, is not susceptible to interference with other electronic equipment.


Three wireless transducers are available for the ACUSON Freestyle system, covering a range of general imaging, vascular, and high-frequency applications such as musculoskeletal and nerve imaging. The user can operate the transducers up to three meters away from the system, which includes an ergonomic interface that enables remote control of scanning parameters from within the sterile field. The ACUSON Freestyle system has a 38-centimeter, high-resolution LED display. The system console can be mounted easily on a lightweight cart and also operates on battery power.

The products mentioned here are not commercially available in all countries. Due to regulatory reasons the future availability in any country cannot be guaranteed. Further details are available from the local Siemens organizations.

Battery life and wireless specs

The transducer's rechargeable battery lasts for about 90 minutes of total scanning time. The system also comes with a spare battery pack that recharges at a charging station on the back of the system while the other one's working.

The development of the Acuson Freestyle was considered as a "huge technical challenge" as ultrasound is a real-time modality where the device must process a large amount of data fed from the transducer. The developers also had to make sure the wireless signals transmitted from the device wouldn't interfere with signals coming from all the other wireless systems in the hospital.

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