CyberKnife robotic radiosurgery system has revolutionized cancer surgery. Since receiving Food and Drug Administration clearance in 1999, CyberKnife has been used to treat patients numbering well into the six figures. The technology started out being used only for tumors in the head and neck, but it soon expanded for use anywhere in the body where radiation treatment could be used.
When Lamb was posting he had a good analysis of Hifu at the time. It is a scary procedure and was only done off shore, but urologists were making good money taking groups of people for a weekend treatment. For prostate, it has nowhere near the convenience, lack of side effects and over 5 year cancer free results as CK (my treatment was May 08 in Naples, Florida-convenient, accurate, no side effects, cancer gone)
FDA has accepted EDAP Premarket Approval Application for Ablaterm Hifu. EDAP anticipates to hear from FDA next year How this will play in the market? Time will tell. CyberKnife will have its advantage and Ablaterm Hifu will have its advantage too.
Ablatherm® HIFU treatments are performed as an outpatient procedure.
The treatment is performed transrectally with spinal anesthesia and intravenous sedation. A probe is placed in the rectum with the patient lying on the right side. The probe emits a beam of high intensity focused ultrasound.
At the point where the ultrasound waves are focused (focal point) the sudden and intense absorption of the ultrasound beam creates a sudden elevation of the temperature (to greater than 85°C), which destroys the cells located in the targeted zone.
About Ablatherm Hifu 7.5MHz ultrasound provides real time integrated imaging of the prostate while 3MHz high intensity ultrasound waves are focused through the rectal wall to the targeted prostate area. (Click image for larger view.)
The targeted zone destroyed by each pulse is oval-shaped and measures from 19 to 24mm in height, 1.7mm in width and 1.7mm in thickness. By repeating the pulses, and moving the focal point, it is possible to destroy the volume of the whole prostate (400 to 600 pulses are generally done to treat the volume previously defined). The treatment duration varies according to prostate volume (2 to 2 1/2 hours).
Swelling of the prostate appears during the treatment and compresses the urethra. A temporary urinary catheter is placed until the edema recedes (which takes generally 14 days, depending on the case).