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...CyberKnife system from Accuray Inc. allows doctors to treat tumors using a noninvasive, outpatient procedure that helps patients avoid the side effects of surgery, chemotherapy or other forms of radiation. It uses software and robotics to home in on cancerous tissue and deliver large doses of radiation while sparing surrounding healthy tissue...
CyberKnife has its limitations. It cannot be used to treat blood-borne cancers, and because it is a local therapy, it cannot be used alone to treat metastatic disease?when the cancer has spread to involve not only the original area, but other organs or tissues as well. It can, however, be combined with other systemic treatments, such as chemotherapy, to treat metastatic disease, and has often been used to treat solid metastatic tumors most commonly found in the lungs, liver, spine and brain. And the technology is continually evolving. The company's Synchrony program allows doctors to irradiate lung...
...original version of this article inaccurately stated that Accuray's CyberKnife system, which noninvasively delivers radiation to cancerous tissue, "can?t be used when the disease has metastasized or to treat very large tumors." Since CyberKnife is a local therapy, it cannot be used alone to treat metastatic cancer, but in fact it can be combined with other systemic treatments, such as chemotherapy, to treat metastatic disease. And CyberKnife has proved useful for treating large tumors...
...Barriers to Understanding It's easy to think that, at their heart, Japanese instincts don't change. Japanese officialdom tends to treat foreigners who live in Japan as temporary residents, not potential immigrants. This predicament isn't confined to Chinese. Koreans, Brazilians and Peruvians who have lived in Japan for decades have a hard time gaining citizenship. But for highly skilled Chinese workers who could just as easily have emigrated to the U.S. or Europe, such restrictions are particularly galling...
...that to really understand dreams we must “stay on the surface and treat the dream as if it were real.” If we do this, then is “reality” really different or more “real” than dreams...