In vitro stent assessment by MRI: visibility of lumen and artifacts for 27 modern stents
-
Andreas Heinrich
,
Felix V. Güttler
Abstract
Purpose:
The purpose of this study was to measure artifacts and visibility of lumen for modern and most commonly used stents in vascular interventions according to a standardized test method of the American Society for Testing and Materials (ASTM).
Materials and methods:
Twenty-four peripheral self-expanding nitinol stents and three stainless steel stents with diameters between 5 and 8 mm and lengths between 30 and 250 mm from seven different manufacturers were compared on a 1.5T and a 3T magnetic resonance (MR) scanner. The visualization of lumen and artifacts was measured according to ASTM F2119 for a turbo spin echo (TSE) [repetition time(TR)/echo time (TE) 500/26 ms] and a gradient echo (GRE) (TR/TE 100/15 ms) sequence. The stents were placed parallel and perpendicular to the radio frequency field (B1).
Results:
There were large differences in visibility of the lumen for the stent models. The visualization of the lumen varies between 0% and 93% (perpendicular to B1), and 0% and 78% (parallel to B1), respectively. The maximum signal loss beyond the actual diameter was 6 mm (TSE) and 10 mm (GRE) for stents made of stainless steel, and lower than 1 mm (TSE) and 4 mm (GRE) for nitinol stents.
Conclusion:
Reliable stent lumen visualization is possible for Misago, Supera, Tigris, and Viabahn stents, if their axis is perpendicular to B1, and independent of the orientation with respect to B1 for short Tigris stents at 1.5T.
References
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©2017 Walter de Gruyter GmbH, Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Review
- Breast sentinel lymph node biopsy with imaging towards minimally invasive surgery
- Research articles
- Tailored interactive sequences for continuous MR-image-guided freehand biopsies of different organs in an open system at 1.0 tesla (T) – Initial experience
- In vitro stent assessment by MRI: visibility of lumen and artifacts for 27 modern stents
- Computer-assisted system on mandibular canal detection
- DCS-SVM: a novel semi-automated method for human brain MR image segmentation
- An image-processing strategy to extract important information suitable for a low-size stimulus pattern in a retinal prosthesis
- Framework for 2D-3D image fusion of infrared thermography with preoperative MRI
- Rapid, automated mosaicking of the human corneal subbasal nerve plexus
- Regular research articles
- Examination of the reliability of an inertial sensor-based gait analysis system
- Response of a physiological controller for ventricular assist devices during acute patho-physiological events: an in vitro study
- Effects of the nasal passage on forced oscillation lung function measurements
- Design of a mechanism for converting the energy of knee motions by using electroactive polymers
