Ablatherm vs. Sonablate

Comparison of HIFU

Sonablate® 500
TURP required?At American HIFU, fewer than 2% of patients have required a TURP prior to Ablatherm HIFUWilling to treat larger prostates but frequently require TURP post treatment or prolonged catheterization.
Image QualityDual ultrasound transducers in treatment probe provides superior 7.5 MHZ imaging while allowing optimum High Intensity Ultrasound Production with a separate 3 MHZ crystal.Single 4.0 MHZ transducer compromises image quality and treatment results.
Nerve DetectionSuperior imaging allows precise visualization and localization of neurovascular bundles allowing improved nerve sparing.No data available on preservation of erectile function with suboptimal visualization of 4.0 MHZ probe.
The ProbePositioned by the physician the probe is robotically controlled via extremely precise software. Allows very accurate delivery of energy to tolerance of 0.1 mm. Fully automated.Several probe heads needed to complete treatment. Each must be manually placed and manipulated. Very operator dependent.
PrecisionVariable lesion height in single probe allows energy to be delivered in pattern conformed to prostate anatomy.Short focal length requires use of multiple probes to complete treatment. Probe geometry poorly configures to prostate anatomy.
Safety FeaturesFour Safety features including external motion detector, rectal wall temperature monitoring, rectal wall thickness and “probe to rectal wall” distance protect against rectal or periprostatic tissue injury. Automatic disengagement of firing device if parameters are violated.Safety devices require constant operator attention to monitor limited safety parameters and adjust device energy output to prevent rectal injury (fistula) or injury to surrounding tissue.
Treatment TimeIntegrated imaging with single probe and automated control keep treatment time under 2 ½ hours.Manual requirement of probe changes, poor image quality and small treatment field extend treatment time from 3 ½ to 5 hours.