- Evaluation study of radial and spiral based volumetric thermometry for monitoring of hepatic microwave ablationMicrowave ablation (MWA) of hepatic tumors benefits from MR thermometry, enabling real-time temperature monitoring to guide treatment and protect healthy tissue. However, MR thermometry in the abdomen is challenging due to respiratory and intestinal motion. This study evaluates two advanced 3D imaging sequences, Stack-of-Stars (Stars) and Stack-of-Spirals (Spirals), for precise… Read more »
- Evaluation study of radial and spiral based volumetric thermometry for monitoring of hepatic microwave ablationMicrowave ablation (MWA) of hepatic tumors benefits from MR thermometry, enabling real-time temperature monitoring to guide treatment and protect healthy tissue. However, MR thermometry in the abdomen is challenging due to respiratory and intestinal motion. This study evaluates two advanced 3D imaging sequences, Stack-of-Stars (Stars) and Stack-of-Spirals (Spirals), for precise… Read more »
- Sarcopenia-A Valuable Imaging Biomarker for Disease Progression in Patients With Primary Sclerosing Cholangitis (PSC)?CONCLUSIONS: Sarcopenia is highly prevalent in a large PSC cohort from a tertiary care centre, even more frequent in female patients and in patients without concomitant IBD. Furthermore, the presence of sarcopenia in PSC patients is associated with an inferior liver-related event-free survival. Read more »
- Proof of concept for voice based MRI scanner control using large language models in real time guided interventionsIn clinical MRI-guided interventions, the lack of high-quality peripheral equipment and specialized interventional MRI systems often necessitates delegating real-time control of MRI scanners to an assistant. We proposed a voice-based interaction system powered by large language models that enabled hands-free natural language control of MRI scanners. The system leveraged multi-agent… Read more »
- Proof of concept for voice based MRI scanner control using large language models in real time guided interventionsIn clinical MRI-guided interventions, the lack of high-quality peripheral equipment and specialized interventional MRI systems often necessitates delegating real-time control of MRI scanners to an assistant. We proposed a voice-based interaction system powered by large language models that enabled hands-free natural language control of MRI scanners. The system leveraged multi-agent… Read more »
- Percutaneous Cryoablation of Central Liver Tumors with Thermal Protection of the Bile DuctCONCLUSION: According to our initial experience, percutaneous cryoablation of CLLT with simultaneous bile duct protection is technically feasible without an increased risk of biliary complications and local tumor recurrence. Read more »
- Prostate Cancer Detection in Younger Men: A Comparative Analysis of Systematic and Magnetic Resonance Imaging-targeted Biopsy in the PROBASE TrialThe optimal approach for prostate cancer (PC) screening, including the ideal starting age and most effective diagnostic method, remains under investigation. We evaluated the diagnostic performance of magnetic resonance imaging (MRI)-targeted biopsy (TBx) and systematic biopsy (SBx) in detecting clinically significant PC (csPC) in men aged 45-50 yr in PROBASE,… Read more »
- Improving necrosis estimation in MR-guided prostate focused ultrasound ablations with a probabilistic thermal dose modelFalse positive necrosis classification close to ablation zones in magnetic resonance (MR)-guided transurethral ultrasound ablation of the prostate poses an issue for real-time assessment of the treatment. Typically, apriori knowledge about transducers is utilized to filter temperature maps, thereby reducing false positives. Our innovation, however, lies in the ability of… Read more »
- Improving necrosis estimation in MR-guided prostate focused ultrasound ablations with a probabilistic thermal dose modelFalse positive necrosis classification close to ablation zones in magnetic resonance (MR)-guided transurethral ultrasound ablation of the prostate poses an issue for real-time assessment of the treatment. Typically, apriori knowledge about transducers is utilized to filter temperature maps, thereby reducing false positives. Our innovation, however, lies in the ability of… Read more »
- Flexible and wireless metasurface coils for knee and elbow MRICONCLUSION: Wireless MCs exhibited great potential for knee and elbow MRI outperforming the flex coil. Future developments will improve the posterior illumination to increase its clinical value. Read more »
- Flexible and wireless metasurface coils for knee and elbow MRICONCLUSION: Wireless MCs exhibited great potential for knee and elbow MRI outperforming the flex coil. Future developments will improve the posterior illumination to increase its clinical value. Read more »
- MRI features that predict progression of residual disease after ablation of extra-abdominal desmoid fibromatosisOBJECTIVE: To identify MRI features of desmoid tumors (DTs) that predict the growth of residual disease following ablation. Read more »
- Temperature Simulation of an Ablation Needle for the Prediction of Tissue Necrosis during Liver AblationBackground/Objectives: Microwave ablation (MWA) is the leading therapy method for treating patients with liver cancer. MWA simulation is used to further improve the therapy and to help develop new devices. Methods: A water-cooled ablation needle was reconstructed. MWA simulations of a polyacrylamide phantom were carried out and compared with a… Read more »
- Temperature Simulation of an Ablation Needle for the Prediction of Tissue Necrosis during Liver AblationBackground/Objectives: Microwave ablation (MWA) is the leading therapy method for treating patients with liver cancer. MWA simulation is used to further improve the therapy and to help develop new devices. Methods: A water-cooled ablation needle was reconstructed. MWA simulations of a polyacrylamide phantom were carried out and compared with a… Read more »
- MRI-compatible and sensorless haptic feedback for cable-driven medical robotics to perform teleoperated needle-based interventionsCONCLUSION: The presented SHF of the µRIGS system introduced a novel MR-compatible technique to bridge the gap between medical robotics and interaction during real-time needle-based interventions. Read more »
- MRI-compatible and sensorless haptic feedback for cable-driven medical robotics to perform teleoperated needle-based interventionsCONCLUSION: The presented SHF of the µRIGS system introduced a novel MR-compatible technique to bridge the gap between medical robotics and interaction during real-time needle-based interventions. Read more »
- Reducing electromagnetic interference in MR thermometry: A comparison of setup configurations for MR-guided microwave ablationsMagnetic Resonance (MR) thermometry is used for the monitoring of MR-guided microwave ablations (MWA), and for the intraoperative evaluation of ablation regions. Nevertheless, the accuracy of temperature mapping may be compromised by electromagnetic interference emanating from the microwave (MW) generator. This study evaluated different setups for improving magnetic resonance imaging… Read more »
- Reducing electromagnetic interference in MR thermometry: A comparison of setup configurations for MR-guided microwave ablationsMagnetic Resonance (MR) thermometry is used for the monitoring of MR-guided microwave ablations (MWA), and for the intraoperative evaluation of ablation regions. Nevertheless, the accuracy of temperature mapping may be compromised by electromagnetic interference emanating from the microwave (MW) generator. This study evaluated different setups for improving magnetic resonance imaging… Read more »
- MRI-compatible abdomen phantom to mimic respiratory-triggered organ movement while performing needle-based interventionsCONCLUSION: This work presents a novel modularizable and low-cost PVA-C based APB to mimic fundamental organ motion. Beside a further organ motion analysis, an optimization of APB's chemical composition is needed to ensure a realistic motion simulation and reproducible long-term use. This phantom enhances diverse and varied training environments for… Read more »
- Compartment-specific 129Xe HyperCEST z spectroscopy and chemical shift imaging of cucurbit[6]uril in spontaneously breathing rats^(129)Xe hyperpolarized gas chemical exchange saturation transfer (HyperCEST) MRI has been suggested as molecular imaging modality but translation to in vivo imaging has been slow, likely due to difficulties of synthesizing suitable molecules. Cucurbit[6]uril-either in readily available non-functionalized or potentially in functionalized form-may, combined with ^(129)Xe HyperCEST MRI, prove useful… Read more »