The Cavitron Ultrasonic Surgical Aspirator is a unique modality for precise tissue removal which results in increased visibility, reduced bleeding, and shorter operating time when dealing with vascular lesions or organs.
Mutations in the gene for the enzymes superoxide dismutase 1 (SOD1) or copper zinc superoxide dismutase have been found in approximately 15-20 percent of the familial cases of ALS. Some quick math shows, then, that approximately 1 to 2 percent of all cases of ALS involve this particular gene mutation.
ALS is extremely rare, affecting only about two out of every 100,000 people, according to the ALS Association [source: ALSA]. About 5,600 people are diagnosed with the disease in the U.S. each year, and between 20,000 and 30,000 people live with it at any one time [source: ALSA]. What exactly causes ALS isnât known, but researchers are learning more about the disease all the time. In most cases (90 to 95 percent), there is no known cause, and the disease is called sporadic ALS. In the remaining cases (5 to 10 percent), the disease is passed down through families, and is called familial ALS.