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An Electronic Device for Needle Placement during Sonographically Guided Percutaneous Intervention¹

¹ From the Department of Radiology, Duke University Medical Center, Erwin Rd, Box 3808, Durham, NC 27710. From the 1998 RSNA scientific assembly. Received February 17, 2000; revision requested April 3; revision received June 2; accepted June 5. Address correspondence to R.C.N. (e-mail: nelso017@mc.duke.edu).

An electronic device for guiding needle placement during sonographically directed percutaneous intervention was tested in a phantom and then in patients. In the phantom, targeting accuracy was similar for use of the needle guide alone, the needle guide with the device, and freehand techniques with the device, but all were superior to the freehand technique alone (P < .001). In 34 (79%) of 43 patients, the device worked well.

Index terms: Interventional procedures, technology • Phantoms • Ultrasound (US), guidance, _**.12985², _**.12986 • Ultrasound (US), technology

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