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Researchers develop femtosecond laser that can diagnose, blast cancerous tumors
Researchers at the University of Tennessee's Center for Laser Applications have developed a femtosecond laser that can non-invasively diagnose, map, irradiate and burn cancerous tumors. Utilizing a beam that pulses at one-quadrillionth of a second, the technology is able to seek out growths and obliterate them with an increased burst of intensity. "Using ultra-short light pulses gives us the ability to focus in a well confined region and the ability for intense radiation," says Associate Professor of Physics Christian Parigger. "This allows us to come in and leave a specific area quickly so we can diagnose and attack tumorous cells fast." The swift, precise technique can avoiding heating up adjacent, healthy tissues and has potential for use in outpatient procedures, particularly for people afflicted with brain tumors. For now, however, the scientists are working with the non-profit University of Tennessee Research Foundation to bring their tech to market. Roll past the jump for the press release and a glimpse of the laser in action.
Another reason to buy gold: nanoparticles help to kill brain tumors
Stanford scientists have used lab-made gold nanoparticles to highlight malignant tissue in the brain, making it easier for surgeons to cut out tumors while leaving healthy bits in tact. Measuring just five millionths of an inch in diameter, these tiny glistening orbs are injected into the patient and then left to bleed out through leaky blood vessels in parts of the brain that have been damaged by the disease. They then get stuck in the bad tissue itself, marking it out for the scalpel when viewed with the right type of imaging. It's not totally new -- we've actually seen gold nanotech deployed against the Big C in stem cells before, but better to be useful than avant-garde. [Brain image via Shutterstock]
Cellphones are dangerous / not dangerous: little tykes under the spotlight
In the rough and tumble debate surrounding the mobile phone's ability to cause cancer, both sides agree that our young ones -- indeed, some of the heaviest users -- could be at an increased risk for cellular-induced tumors. According to a study published in the Journal of the National Cancer Institute, the radio emissions from mobile devices penetrate much deeper into the brains of children, and in the case of little tykes ages five to eight, their noggins will absorb twice the energy of the average adult. This, combined with their developing nervous systems, has brought concern for the welfare of our youngest mobile-savvy citizens, and led to a European study of nearly 1,000 (informed?) participants. Data was gathered over a four-year period, which relied upon self-reporting methods, where youngsters were found to not talk very often, and typically sent text messages instead -- big surprise, right? While long-term risks remain unknown, the researchers conclude that "a large and immediate risk of cellphones causing brain tumors in children can be excluded." In other words: little Suzy won't begin sprouting cancer cells overnight. While you doting parents may find comfort in the latest research, you might consider stopping short of giving the mischievous rascal an unlimited voice plan. After all, gossip still spreads best at the school yard. [Image courtesy Derek Olson (flickr)]
Cellphones are dangerous / not dangerous: Danish chatterbox edition
Concerned that a decade and a half of regular cellphone will have a long-term effect on your health? Hopefully the latest study conducted by members of the World Health Organization (WHO) will put your mind at ease. The examination followed nearly 3 million Danish adults, studying links between phone use and the formation of acoustic neuromas -- non-cancerous, slow-growing brain tumors that form on the main nerve that connects the inner ear to the brain. The study concluded that people who've used a handset for 11-15 years weren't any more likely to develop a tumor than those who don't use cellphones at all, though scientists are unsure that this is a long enough period of time to determine a significant correlation (or lack thereof). Still, this comes as refreshing news two months after the WHO released a study revealing that RF waves coming from phones are "potentially carcinogenic," due to a limited link to glioma and acoustic neuroma. Of course, none of these reports can actually conclude that cellphones cause cancer -- only that the two may be correlated. So, what does this latest study really do? It legitimizes the need to conduct more studies.
Cellphones are dangerous / not dangerous: cancer experts say 'What, me worry?'
If you haven't already gotten whiplash from the ongoing cellphone-cancer debate, a freshly released scientific review might just do the trick. In the paper, published Friday, a panel of experts from Britain, Sweden and the US conducted a thorough survey of previous studies, before concluding that existing literature is "increasingly against" the theory that cellphone use causes brain tumors in adults. The researchers also questioned the biological mechanisms underpinning this hypothesis, while acknowledging some lingering uncertainties, since data on childhood tumors and longer-term research are still lacking. The results come just a few weeks after the World Health Organization released its own literature review, in which it claimed that cell phones should be considered "potentially carcinogenic." But Anthony Swerdlow, a professor at Britain's Institute of Cancer Research and leader of the most recent investigation, said his group's work doesn't necessarily contradict the WHO, since the latter was simply seeking to evaluate cancer risks according to its own "pre-set classification system" -- under which things like pickled vegetables and coffee are also considered "potentially carcinogenic." Unfortunately, this doesn't mean that the debate will die down anytime soon, though Swerdlow expects more definitive conclusions within the next few years -- assuming, of course, that all of our brains haven't turned to oatmeal by then.
Startup's headset will bathe your brain in ultrasound, might help fight cancer, too
The scientific community has spent a decade exploring ultrasound as a means of breaking through the blood-brain barrier -- a layer of tightly-packed cells that surround the brain's blood vessels, making it difficult for doctors to deliver chemotherapy and other treatments to cancer patients. Thus far, though, most ultrasound-based techniques have relied upon complex and often costly equipment, including MRI machines and infusion pumps. But researchers at a startup called Perfusion Technology think they may have come up with a less invasive, more cost-effective alternative -- a new headset designed to deliver low-intensity ultrasound therapy to the entire brain over the course of extended treatment periods. This approach differs markedly from most other methods, which typically target smaller areas of the brain with high-intensity ultrasound doses. As with most other potential breakthroughs, however, Perfusion's technique still needs to undergo some major testing. The company has already conducted several tests on animals, but the last time a similar method was tried on humans, many subjects ended up suffering from excessive bleeding. And that doesn't sound good at all.
Portable brain tumor treatment system kills cancer while you take out the trash
We've seen robots that perform brain surgery and lasers that cook tumors, and now a team of researchers are well on their way to bringing mobility to the battle against brain cancer. The NovoTTF-100A, which just received FDA approval, is basically a set of insulated electrodes, attached to an electronic box, that pumps low intensity electrical fields to the site of a freshly diagnosed GBM (glioblastoma multiforme) tumor. The fields, known as Tumor Treatment Fields (TTF), play off the electrically charged elements of cancer cells to stunt the tumor's growth, and may in some cases actually reverse it. A recent test of the system showed comparable results to chemotherapy, without the usual lineup of side effects, including nausea, anemia, fatigue, and infection. Given, patients using the system are expected to wear the thing continuously, but we'd say walking around with a cap full of electrodes is a small price to pay for giving cancer the boot. Full PR after the break.
Neurosurgeons use MRI-guided lasers to 'cook' brain tumors
In the seemingly perpetual battle to rid this planet of cancer, a team of neurosurgeons from Washington University are using a new MRI-guided high-intensity laser probe to "cook" brain tumors that would otherwise be completely inoperable. According to Dr. Eric C. Leuthardt, this procedure "offers hope to certain patients who had few or no options before," with the laser baking the cancer cells deep within the brain while leaving the good tissue around it unmarred. The best part, however, is that this is already moving beyond the laboratory, with a pair of doctors at Barnes-Jewish Hospital using it successfully on a patient last month. Regrettably, just three hospitals at the moment are equipped with the Monteris AutoLITT device, but if we know anything about anything related to lasers, it'll be everywhere in no time flat.
Cellphones are dangerous/not dangerous, eyezapoppin! edition
While you're totally in your rights to keep frettin' over brain tumors, it looks like your eyes are safe from the cellphone cancer -- at least until another study is released. According to a paper published in the Journal of the National Cancer Institute, a German study involving roughly 1,600 people has found no conclusive link between cellphone use and uveal melanoma. This contradicts an earlier, smaller study by the same researchers that suggested that there indeed might be a connection. Is that clear? It doesn't seem that a consensus will be reached on this subject any time soon, but for the morbidly curious we have years of cellphone / cancer hodgepodge for your perusal.
Toronto's public health department recommends kids limit mobile use
In case it wasn't already obvious that kids under the age of eight should be using cellphones strictly for emergencies, here's another reason: Toronto's public health department says so. In what might be a first in all of Canada, the agency is officially laying down recommendations that tykes be restricted to emergency calls and teens talk on their phones for no more than ten minutes at a time (good luck with that one) due to growing evidence that prolonged use could lead to brain tumors and other health-related unpleasantness later in life. Moving up the governmental food chain, Health Canada still officially recommends no restrictions, so the endless confusion over cellphone safety continues as usual.[Thanks, Thierry]
Cellphones are dangerous/not dangerous, you're better off smoking edition
You've heard just how dangerous holding that cellphone upside your noggin is, but this time, the research is really for real. Reportedly, an award-winning cancer expert (Dr. Vini Khurana) has concluded that mobile phones -- in the long run -- could end up killing far more Earthlings than smoking or asbestos ever could. As we've heard countless times before, this fellow is warning that heavy mobile users could end up with brain tumors that threaten their livelihood, and feels that a direct link between handset use and certain tumors will be "definitively proven" in the next decade. Additionally, he suggests that individuals avoid using the cancer generators whenever possible, and that governments and the mobile industry at large take "immediate steps" to reduce radiation exposure. You won't be laughing if he's right.[Via Digital Lifestyles]
