MR-guided core biopsy with MR fluoroscopy using a short, wide-bore 1.5-Tesla scanner: feasibility and initial results

Journal of Magnetic Resonance Imaging : JMRI
Joerg StattausMark E Ladd

Abstract

To evaluate MR fluoroscopy in a short, wide-bore 1.5T MRI suitable for near real-time biopsy guidance. A total of eight consecutive patients underwent MR-guided core biopsy in a 1.5T system with a 70 cm bore diameter. A total of five biopsies were performed in focal liver lesions, three biopsies in soft-tissue tumors. Before biopsy, three different fast MR sequences were compared for image quality (anatomical visibility, lesion visibility, and artifacts), and signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. In all cases, an MR-compatible guidance needle was positioned under MR fluoroscopy using the most suitable sequence. In each patient the guidance needle could be placed accurately under MR fluoroscopy without having to remove the patient from the isocenter of the magnet during needle movement. All biopsies were technically successful and appropriate specimens could be obtained. In prebiopsy imaging, a T2-weighted single shot turbo spinecho sequence (half-Fourier acquisition single-shot turbo spin-echo [HASTE]) achieved the best rating for lesion visibility and superior SNR and CNR values. Findings of this study demonstrate that MR fluoroscopy for biopsy guidance in a short, wide-bore 1.5T scanne...Continue Reading

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Citations

Mar 5, 2009·Abdominal Imaging·Chandan Jyoti DasDeep Narayan Srivastava
Jul 22, 2008·European Radiology·Joerg StattausMark E Ladd
Mar 21, 2013·Investigative Radiology·Kamran AhrarR Jason Stafford
Aug 1, 2011·Topics in Magnetic Resonance Imaging : TMRI·Marietta Garmer, Dietrich Grönemeyer
Nov 19, 2010·Radiology·Stephen B Solomon, Stuart G Silverman
Jan 8, 2016·Radiological Physics and Technology·Shigeyoshi SaitoTakashi Hashido
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Feb 23, 2010·Journal of Vascular and Interventional Radiology : JVIR·Christoph ThomasPhilippe L Pereira
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Feb 27, 2019·AJR. American Journal of Roentgenology·Michael P RechtRoy Wiggins
Feb 7, 2018·Topics in Magnetic Resonance Imaging : TMRI·Harald BusseMichael Moche
Feb 7, 2018·Topics in Magnetic Resonance Imaging : TMRI·Farzad Sedaghat, Kemal Tuncali
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