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Radial keyhole sequences for low field projection reconstruction interventional MRI
A Shankaranarayanan1, M Wendt, A J Aschoff
1Department of Radiology, Case Western Reserve University and University Hospitals of Cleveland, Cleveland, Ohio 44106, USA.
Journal of Magnetic Resonance Imaging : JMRI
|February 13, 2001
Summary
Two new rapid imaging strategies for interventional MRI (IMRI) were developed. These methods, interleaved and continuous projection reconstruction, enable faster image acquisition for real-time guidance during medical procedures.
Area of Science:
- Medical Imaging
- Interventional Radiology
- Magnetic Resonance Imaging
Background:
- Interventional magnetic resonance imaging (IMRI) integrates diagnostic and therapeutic procedures with MRI guidance.
- Real-time imaging and motion insensitivity are critical for intraoperative and interventional applications.
Purpose of the Study:
- To develop and evaluate two novel rapid acquisition strategies for IMRI.
- To adapt concepts from computed tomography fluoroscopy and keyhole MRI to a radial coordinate system.
Main Methods:
- Development of interleaved projection reconstruction (IPR) for rapid MR image acquisition.
- Development of continuous projection reconstruction (CPR) for rapid MR image acquisition.
- Comparison of IPR and CPR strategies in experimental interventional settings.
Main Results:
- Demonstration of the utility of IPR and CPR for rapid image acquisition in IMRI.
- Feasibility of applying these radial acquisition strategies in experimental interventional procedures.
- Comparison of the performance characteristics of IPR and CPR.
Conclusions:
- IPR and CPR are viable rapid acquisition strategies for IMRI.
- These methods enhance the potential for real-time image guidance in interventional procedures.
- Further study is warranted to explore the full capabilities of these techniques in clinical applications.