MR-guided biopsies with high-resolution ultrafast T2-weighted turbo spin-echo sequence LoLo: initial clinical experience

RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
A BückerR W Günther

Abstract

The feasibility of the "LoLo"-technique for MR guidance of biopsy procedures was tested. MR-guided biopsies were performed on 10 patients employing a 1.5 T system. The "LoLo"-technique used is a single shot turbo spin echo technique. Only a small field of view is covered in order to yield images with a resolution of 1 mm2 in 600 ms. The orthogonal orientation of the slice selective radio frequency pulses to each other prevents foldover artifacts. No complications occurred. All biopsy procedures yielded sufficient material to diagnose the underlying disease. The "LoLo"-technique enabled good depiction of the needle tip in all cases. T2-weighted contrast typical for turbo spin echo images was observed. No foldover artifacts were detectable. MR-guided biopsies are possible with the "LoLo"technique. Compared to gradient echo sequences T2-weighting and smaller susceptibility artifacts proved to be advantageous.

Citations

Jun 26, 1999·Cardiovascular and Interventional Radiology·R W GüntherG Adam
Apr 13, 2013·Cardiovascular and Interventional Radiology·Tobias PenzkoferChristiane K Kuhl
Mar 21, 1998·Journal of Magnetic Resonance Imaging : JMRI·J M NeuerburgR W Guenther

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