Therapy Systems

Sonalleve MR-HIFU

Therapy platform

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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.

Specifications

Compatibility
Compatibility
Philips MR systems
  • Achieva: 1.5T, 3.0T, and 3.0T TX T
  • Achieva SmartPath to dStream: 1.5T and 3.0T TX T
  • Multiva 1.5 T
  • Ingenia: 1.5T and 3.0T T
  • Ingenia CX: 1.5T and 3.0T T
Configuration overview
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 mm
  • Focal length 140 mm
Sonalleve therapy console
  • Hardware and software for treatment planning, temperature mapping, ablation feedback, therapy guidance and communication with the Philips MR scanner
Heating method
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
DISC
DISC
DIrect Skin Cooling
  • Patient’s skin is kept at a constant temperature of about 20 °C
Direct coupling
  • For cooling efficiency, the patient is positioned directly onto the membrane; most patients don’t require a gel pad
Feedback
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
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
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
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
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 sec
  • Three coronal and one sagittal slice through focus, two slices freely positioned, such as near field and far field sec
Accuracy
  • Temperature changes ±1 °C
T2-based temperature monitoring
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 °C
Software and user interface
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
  • *Women who are planning on becoming pregnant should consult their physician before seeking MR-HIFU treatment.