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International Journal of Computer Assisted Radiology and Surgery

Erschienen in:

01.05.2015 | Original Article

Preclinical feasibility of a technology framework for MRI-guided iliac angioplasty

verfasst von: Martin A. Rube, Fabiola Fernandez-Gutierrez, Benjamin F. Cox, Andrew B. Holbrook, J. Graeme Houston, Richard D. White, Helen McLeod, Mahsa Fatahi, Andreas Melzer

Erschienen in: International Journal of Computer Assisted Radiology and Surgery | Ausgabe 5/2015

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Abstract

Purpose

Interventional MRI has significant potential for image guidance of iliac angioplasty and related vascular procedures. A technology framework with in-room image display, control, communication and MRI-guided intervention techniques was designed and tested for its potential to provide safe, fast and efficient MRI-guided angioplasty of the iliac arteries.

Methods

A 1.5-T MRI scanner was adapted for interactive imaging during endovascular procedures using new or modified interventional devices such as guidewires and catheters. A perfused vascular phantom was used for testing. Pre-, intra- and post-procedural visualization and measurement of vascular morphology and flow was implemented. A detailed analysis of X-ray fluoroscopic angiography workflow was conducted and applied. Two interventional radiologists and one physician in training performed 39 procedures. All procedures were timed and analyzed.

Results

MRI-guided iliac angioplasty procedures were successfully performed with progressive adaptation of techniques and workflow. The workflow, setup and protocol enabled a reduction in table time for a dedicated MRI-guided procedure to 6 min 33 s with a mean procedure time of 9 min 2 s, comparable to the mean procedure time of 8 min 42 s for the standard X-ray-guided procedure.

Conclusions

MRI-guided iliac vascular interventions were found to be feasible and practical using this framework and optimized workflow. In particular, the real-time flow analysis was found to be helpful for pre- and post-interventional assessments. Design optimization of the catheters and in vivo experiments are required before clinical evaluation.

Vorheriger Artikel A miniature accelerometer-based guidance device for percutaneous computed tomography-guided punctures

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Titel: Preclinical feasibility of a technology framework for MRI-guided iliac angioplasty
verfasst von: Martin A. Rube
Fabiola Fernandez-Gutierrez
Benjamin F. Cox
Andrew B. Holbrook
J. Graeme Houston
Richard D. White
Helen McLeod
Mahsa Fatahi
Andreas Melzer
Publikationsdatum: 01.05.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: International Journal of Computer Assisted Radiology and Surgery / Ausgabe 5/2015
Print ISSN: 1861-6410
Elektronische ISSN: 1861-6429
DOI: https://doi.org/10.1007/s11548-014-1102-0

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Abstract

Purpose

Methods

Results

Conclusions

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