HIFU machines
by alady on Sun Feb 14, 2010 12:22 AMQuote Reply
There are two machines.
The Ablatherm, which is made in France, and is robotic. The doctor inserts the wand up the rectum, clamps it down so it is secure, then he sets the margins and the machine cooks the tissue, leaving the shell of the prostate. The Ablatherm is capable of cooking a 25cc gland is has a 2.5cm focal length beam. This machine's short beam reach means most men need to undergo a gland reducing procedure, most often a TURP (rooto rooter) which can cause scarring and lead to incontinence. Green light lazer is a new technique, which is cheap and pain free, but isn't offered in many places in the USA. Or hormone treatment will reduce the size. The Ablatherm is capable of cooking a 25cc gland is has a 2.5cm focal length beam. The Ablatherm is not capable of monitoring neurovascular blood flow, or detecting the neurovascular bundles and it only gives the doctor one view of the prostate, not 3-D. It's treatment lesion is larger.
The Sonablate is made in America, Indiana. It is manual with a bit of a robotic capability. The doctor inserts the wand up the rectum and clamps it down so it is secure, there's no movement. Then he uses the computer screen which allows him to see multiple views of the prostate including 3D images. He watches his progress as he moves the ray of sound to cook the tissue, if any tissue is left the machine can see it and report it to the doctor. It also leaves the shell of the prostate intact. It can cook a prostate up to 40cm as it's focal length is 4.0. If your gland is over 40cm then one of the gland reducing methods mentioned above will be needed. The Sonablate is able to monitor blood flow through the neurovascular bundles with a color overlay during both planning and treatment. Through detecting the blood flow, physicians can clearly see the location of the neurovascular bundles, thus avoiding them to preserve potency. The doctor can control the power level of the Sonablate and it's treatment lesion is smaller, leading to a more percise treatment lesion.
HIFU is capable of treating recurrent prostate cancer after radiation failure.
HIFU takes 1-3 hours for treatment. Then a wake up period of 1-2 hours as you are put to sleep, to prevent any movement, sneezing, etc.
Dr. T Uchida has recently presented and published data using the Sonablate that showed Biochemical Disease Free Rate After 5 Years: Low Risk 97%, Intermediate Risk 71%, High Risk 64%
Find: Clinical Outcome of HIFU for the Treatment of localized prostate cancer: 5-year Experience. Toyoaki Uchida, Hiroshi Ohkusa, Hideyuki Yamashita, Yoshihiro Nagata Department of Urology, Tokai University Hachioji Hospital. Abstract - ISTU 2004
.......and my husband is doing great after HIFU!!
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