Oral
Interventional MRI
ISMRM & ISMRT Annual Meeting & Exhibition • 10-15 May 2025 • Honolulu, Hawai'i
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0673. Design
and evaluation of a 16-channel TUS/MR head coil
L. Nohava, O. Soanca, M. Obermann, S. Grosshagauer, S.
Hodono, B. Campilho, H. Hewener, S. Tretbar, A.
Schmitgen, S. Arnold, C. Windischberger, E. Laistler
High Field MR Center, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria
Impact: The CITRUS coil advances TUS/fMRI capabilities,
enabling focused ultrasound for neuromodulation. This
development could expand clinical applications for
non-invasive brain stimulation, addressing neurological and
psychiatric conditions through precise, image-guided
therapies.
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| 15:57 |
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0674. Longitudinal
evaluation of MRgFUS lesion characteristics and retrospective
identification of the final target location using dMRI
A. Nayak, L. Goel, A. Bissoli, G. Ricciardi, E. Ciceri, M.
Fonda, C. Pierpaoli
National Institutes of Health (NIH), Bethesda, United States
Impact: The dMRI quantitative measurements in the MRgFUS
lesion are able to differentiate between regions of highest
tissue damage and edema. Clinicians can use these
measurements to assess the location of final target
placement and correlate with clinical outcome measures.
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| 16:09 |
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0675. Contralesional
motor-related functional networks following MR-guided focused
ultrasound thalamotomy for essential tremor.
D. Clark, C. Rockel, S. Pichardo, D. Martino, C. Aquino, T.
Sankar, F. Girgis, Z. Kiss, G. B. Pike
University of Calgary, Calgary, Canada
Impact: MRgFUS thalamotomy for essential tremor induces
lasting motor network reorganization, suggesting that
long-term tremor relief may arise from adaptive connectivity
changes. These findings could inform strategies to enhance
neuromodulatory treatments for essential tremor or movement
disorders.
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| 16:21 |
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0676. Single-shot
spiral MR-ARFI with Model-Based Displacement Map Reconstruction
in Non-Human Primates
S. Sengupta, M. A. Phipps, L. M. Chen, C. Caskey, W. Grissom
Vanderbilt University Medical Center, Nashville, United States
Impact: Used within current FDA limits, MR-ARFI has poor
sensitivity for visualizing the ultrasound focus to target
neuromodulation. We show that a recent spiral MR-ARFI method
enables focus visualization in vivo within limits, and we
maximize its sensitivity with model-based reconstruction.
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| 16:33 |
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0677. Active
Electromagnetic Interference Suppression for Real-Time MR
Thermometry During MR-Guided Microwave Ablation
Q. Dai, S-F Shih, J. Chiang, D. Lu, H. Wu
University of California, Los Angeles, Los Angeles, United States
Impact: The software-based active EMI suppression
technique enables reliable real-time MR temperature
monitoring during continuous microwave ablation without
additional hardware modifications. This technique has
potential for clinical deployment to enhance patient safety
and improve treatment outcomes.
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| 16:45 |
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0678. Susceptibility
artifact correction in MR thermometry during microwave ablation
of liver lesions
M. Wu, C. Boehm, O. Oecal, M. Fabritius, P. Bour, T. Faller,
E. Dantas, V. Ozenne, J. Ricke, D. Karampinos, O. Dietrich,
M. Seidensticker
Technical University of Munich, Munich, Germany
Impact: Susceptibility artifact correction improves
real-time MR thermometry guidance of thermoablation
therapies of patients with liver lesions. More accurate
temperature maps will provide increased safety during the
ablation and improve efficiency by ensuring sufficient
thermal dose delivery to the target tissue.
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| 16:57 |
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0679. Feasibility
of fast all-systolic volumetric MR thermometry with integrated
Active Tracking
C. Rogers, N. Stahl, V. Karloci, D. Sunnarborg, A. Krafft,
R. Neji, K. Pushparajah, R. Razavi, R. Botnar, S. Roujol
King's College London, London, United Kingdom
Impact: This study demonstrates the feasibility of fast
single-phase volumetric MR thermometry with integrated
Active Tracking, which may improve the safety of the
procedure and the accuracy of lesion formation.
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| 17:09 |
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0680. MRI-Guided
Trans-Perineal Cryoablation in the Treatment of Primary Prostate
Cancer: A Prospective Study
S. Sotoudehnia, L. Mynderse, S. Thompson, A. Lu, A.
Ganjizadeh, A. Bathke, D. Adamo, D. Woodrum
Mayo Clinic, Rochester, United States
Impact: MRI-guided trans-perineal cryoablation shows
promise as a minimally invasive, precise treatment for
localized prostate cancer, with significant PSA reductions
and a low 11.1% recurrence rate. These findings support its
potential as an effective alternative to traditional
therapies.
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| 17:21 |
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0681. Feasibility
of MR-guided RF Ablation and Lesion Evaluation in an Isolated
Beating Pig Heart Platform
E. Schrauben, L. Hopman, J. Nelissen, P. Reitzema, B.
Smeets, R. Boekhoven, D. Sunnarborg, J. Smink, J. Niessen,
C. Allaart, M. Götte, A. Nederveen
Amsterdam UMC, Amsterdam, Netherlands
Impact: The
collaborative combination proposed here lays the groundwork
for future innovations in MR-guided cardiac interventions by
offering real-time imaging, lesion characterization, and a
controlled platform for testing new techniques.
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| 17:33 |
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0682. From
Stars to Stripes: Increasing Image Quality and Acquisition Speed
in 4D Radiotherapy MR Imaging
C. Eichner, S. Doussin, M. Requardt, M. Helo, E. Weiland, M.
Nickel
Siemens Healthineers AG, Forchheim, Germany
Impact: This study shows that self-navigated cartesian
imaging enables rapid, precise abdominal 4D motion capture
in free breathing, potentially advancing radiotherapy
planning. Its high-resolution imaging capacity may refine
clinical protocols, supporting broader adoption of 4D
imaging in radiotherapy planning.
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