Sonalleve MR-HIFU
Therapy platform
Sonalleve MR-HIFU
Therapy platform
Extend your options in women’s health and oncology. Sonalleve MR-HIFU opens up non-invasive alternatives to traditional surgical treatments of uterine fibroids and enables non-invasive palliative pain treatment of bone metastases.
Clinical image gallery
Features
Leverage the power of US and MR
Now you can work with image-guided precision thanks to built-in US and MR capabilities. The HIFU system and coil elements are integrated in the Sonalleve table. Ultrasound waves are focused onto the target volume, ablating the lesion without affecting nearby tissue. The process is monitored with real-time temperature-sensitive MRI.
MR guidance: good news for skin
Sonalleve MR-HIFU is designed for intact skin. High Intensity Focused Ultrasound (HIFU) is used to heat and coagulate tissue deep inside the body. MRI measures temperature changes within the human body, making it useful for planning and monitoring thermal ablation processes such as HIFU.
Monitor temperature in real time
The MR scanner acquires temperature-sensitive images for monitoring local heat distribution. The Real-TI bi-directional interface enables real-time data transfer for directing the MR system through the Sonalleve console and retrieving images.
Specifications
- Compatibility
- Philips MR systems
- Achieva: 1.5T, 3.0T, and 3.0T TX
- Achieva SmartPath to dStream: 1.5T and 3.0T TX
- Multiva 1.5
- Ingenia: 1.5T and 3.0T
- Ingenia CX: 1.5T and 3.0T
- Configuration overview
- Dedicated trolley-tabletop
- The separate trolley is positioned over the lowered MR patient support
- Save time with patient preparation outside the MR room
- Robotic transducer positioning system with five degrees of freedom
- HIFU therapy transducer
- Philips proprietary design, model SX140
- Focal length 140
- Sonalleve therapy console
- Hardware and software for treatment planning, temperature mapping, ablation feedback, therapy guidance and communication with the Philips MR scanner
- DISC
- DIrect Skin Cooling
- Patient’s skin is kept at a constant temperature of about 20
- Direct coupling
- For cooling efficiency, the patient is positioned directly onto the membrane; most patients don’t require a gel pad
- Heating method
- Treatment cell sizes
- Focus trajectories use heat diffusion to reach maximal ablation efficiency. Multiple cell sizes with diameters of 4, 8, 12, 14 and 16 mm are available. Cell length is usually 2.5 times the diameter
- Volumetric heating
- Focal spot is moved rapidly in concentric circles to reach homogenous temperature over macroscopic volume (treatment cell) in a short time
- Feedback
- Real-time feedback
- Temperature and thermal dose are measured in real time and used to adjust sonication parameters during a sonication event to achieve desired ablation temperature and volume, independent of local variations in tissue properties
- Real-time HIFU-MR interface
- System and MR console
- Between Sonalleve MR-HIFU and the Achieva MR console
- Rapid and dedicated interface allows fast scanner control and image retrieval to support real-time feedback
- Imaging sequences
- Treatment planning
- On 3D diagnostic MR images
- All standard diagnostic imaging sequences of the MR system are available for treatment planning
- Dedicated ExamCards are provided for HIFU applications
- DMT
- Dual Mode Thermometry
- Full workflow integration of novel fat tissue thermometry based on T2-weighted MR imaging data measuring cumulative heating over the whole treatment duration with PRFS thermometry for target heating
- PRFS temperature monitoring
- FFE-EPI-based phase sensitive MR sequences
- Temperature and thermal dose maps are calculated based on the temperature sensitive Proton Resonance Frequency Shift induced phase difference
- Refresh rate of thermal images
- Six slices every 3.5
- Three coronal and one sagittal slice through focus, two slices freely positioned, such as near field and far field
- Accuracy
- Temperature changes ±1
- T2-based temperature monitoring
- Reproducible and long-term
- Based on T2-weighted MRI
- Calibrated absolute temperature measurement, for adipose tissue
- Fully integrated and automated treatment workflow
- Accuracy
- ±2
- Software and user interface
- Dedicated tools
- Protocols and ExamCards for Philips MR systems
- Excellent scanning efficiency and ease of use
- Treatment planning
- Based on 3D diagnostic MR images
- Tools for efficient planning of treatment volumes, beam paths, and transducer positions
- Tools to verify a beam path free of obstruction to maintain patient safety
- Auto-population tool
- Calculates the size and position of multiple treatment cells to cover the desired treatment volume
- Beam shaping
- OAR (Organ Avoidance Region) or Critical OAR regions can be drawn to protect sensitive regions, such as scars and skin folds from high ultrasound exposure
- Thermal maps
- Real-time PRFS temperature maps and thermal dose maps overlaid on anatomical MR images for continuous treatment monitoring
- Heating curve
- Displays the temperature and thermal dose over time during a single sonication
Disclaimer
*Women who are planning on becoming pregnant should consult their physician before seeking MR-HIFU treatment.