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Published online before print March 18, 2008, 10.1148/radiol.2472071039

(Radiology 2008;247:535.)

A more recent version of this article appeared on May 1, 2008
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© RSNA, 2008

Technical Developments

Real-time MR-guided Wire Localization of Breast Lesions by Using an Open 1.0-T Imager: Initial Experience1

Axel Gossmann, MD, Christopher Bangard, MD, Mathias Warm, MD, Rita K. Schmutzler, MD, Peter Mallmann, MD, and Klaus-Jürgen Lackner, MD

1 From the Departments of Radiology (A.G., C.B., K.J.L.) and Obstetrics and Gynecology (M.W., R.K.S., P.M.), University of Cologne, Joseph-Stelzmann-Strasse 9, D-50924 Cologne, Germany. Received June 14, 2007; revision requested August 23; revision received August 31; accepted September 28; final version accepted Octo-ber 16.). Address correspondence to A.G. (e-mail: GossmannA{at}kliniken-koeln.de).

The purpose of this study was to prospectively evaluate technique and time factors for real-time magnetic resonance (MR) imaging–guided wire localization of suspicious breast lesions by using an open 1.0-T MR imager. It was conducted with institutional review board approval; informed consent was given by patients. Needle placement was monitored in 30 women (mean age, 50.5 years; range, 28–70 years) by using a dynamic balanced gradient-echo (single-shot turbo field-echo [TFE]) sequence with a temporal resolution of 0.5 second. In all patients, the tip of the needle was clearly identified during placement. Consistent with balanced TFE (BTFE) imaging, diagnostic MR imaging after the interventional procedure confirmed that the hookwires were placed 0–6 mm (mean, 3.3 mm) from the target lesions. The total procedure time ranged from 16–36 minutes. Results show that real-time MR-guided wire localization permits correction of the needle position during placement and reduces the interventional procedure time.

Supplemental material: http://radiology.rsnajnls.org/cgi/content/full/2472071039/DC1

© RSNA, 2008






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