scholarly journals Interventional MR elastography for MRI‐guided percutaneous procedures

2016 ◽  
Vol 75 (3) ◽  
pp. 1110-1118 ◽  
Author(s):  
Nadège Corbin ◽  
Jonathan Vappou ◽  
Elodie Breton ◽  
Quentin Boehler ◽  
Laurent Barbé ◽  
...  
2017 ◽  
Vol 11 (3) ◽  
Author(s):  
Koushik Kanti Mandal ◽  
Francois Parent ◽  
Raman Kashyap ◽  
Sylvain Martel ◽  
Samuel Kadoury

Accurate needle guidance is essential for a number of magnetic resonance imaging (MRI)-guided percutaneous procedures, such as radiofrequency ablation (RFA) of metastatic liver tumors. A promising technology to obtain real-time tracking of the shape and tip of a needle is by using high-frequency (up to 20 kHz) fiber Bragg grating (FBG) sensors embedded in optical fibers, which are insensitive to external magnetic fields. We fabricated an MRI-compatible needle designed for percutaneous procedures with a series of FBG sensors which would be tracked in an image-guidance system, allowing to display the needle shape within a navigation image. A series of phantom experiments demonstrated needle tip tracking errors of 1.05 ± 0.08 mm for a needle deflection up to 16.82 mm on a ground-truth model and showed nearly similar accuracy to electromagnetic (EM) tracking (i.e., 0.89 ± 0.09 mm). We demonstrated feasibility of the FBG-based tracking system for MRI-guided interventions with differences under 1 mm between tracking systems. This study establishes the needle tracking accuracy of FBG needle tracking for image-guided procedures.


2012 ◽  
Vol 19 (9) ◽  
pp. 1121-1126 ◽  
Author(s):  
Ryan B. Perumpail ◽  
Josh Levitsky ◽  
Yi Wang ◽  
Victoria S. Lee ◽  
Jennifer Karp ◽  
...  

2004 ◽  
Vol 171 (4S) ◽  
pp. 223-223
Author(s):  
Jonathan A. Coleman ◽  
Robert C. Susil ◽  
Axel Krieger ◽  
Peter L. Choyke ◽  
Betty Wise ◽  
...  

Author(s):  
CR Habermann ◽  
R Sinkus ◽  
A Albrecht ◽  
MC Cramer ◽  
F Weiss ◽  
...  

2020 ◽  
pp. 25-31
Author(s):  
M. L. Mazo ◽  
O. E. Jacobs ◽  
O. S. Puchkova ◽  
M. V. Feldsherov ◽  
E. V. Kondratyev

The rate of detection of breast cancer by MRI, while other methods of radiological diagnosis are not sufficiently informative, ranges from 5.2 to 26.3 per cent. Suspicious breast tumors of category BI-RADS 4, 5 show morphological image-guided biopsy verification, in particular MRI with contrast. Purpose. To show the possibilities and features of carrying out MRI-guided vacuum breast biopsy, including after aesthetic breast augmentation. Material and methods. A comprehensive X-ray, ultrasound and MRI examination of 54 women aged between 28 and 70 years with different breast tumors was conducted. Of these, five were detected only by breast MRI with contrast, and were morphologically verified by MRI-guided vacuum aspiration biopsy. Results. 14 of the 54 patients with breast mass were diagnosed with breast cancer and 26 were diagnosed with benign diseases. The effectiveness of comprehensive examination and low-invasive high-tech MRI-guided procedures in early refined screening for breast cancer, including after aesthetic breast augmentation, has been demonstrated. MRI-guided vacuum-assisted breast biopsy is a fast, safe and accurate diagnostic method of morphological verification of suspicious breast tumors that do not have X-ray and ultrasound.


2011 ◽  
Vol 6 (1) ◽  
pp. 67
Author(s):  
Antonio L Bartorelli ◽  
Claudio Tondo ◽  
◽  

Innovative percutaneous procedures for stroke prevention have emerged in the last two decades. Transcatheter closure of the patent foramen ovale (PFO) is performed in patients who suffered a cryptogenic stroke or a transient ischaemic attach (TIA) in order to prevent recurrence of thromboembolic events. Percutaneous occlusion of the left atrial appendage (LAA) has been introduced to reduce stroke risk in patients with atrial fibrillation (AF). The role of PFO and LAA in the occurrence of cerebrovascular events and the interventional device-based therapies to occlude the PFO and LAA are discussed.


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