2013年10月27日 星期日

A need for improvement in tumor removal

"Though brain tumor surgery has advanced in many ways, survival for many patients is still poor, in part because surgeons can't be sure that they've removed all tumor tissue before the operation is over," says co-lead author Dr. Daniel Orringer, a lecturer in the U-M Department of Neurosurgery who has worked with the Harvard team since a chance meeting with a team member during his U-M residency."We need better tools for visualizing tumor during surgery,Increasingly, forward-thinking retailers can place Household scissors orders for you without bothering you with the selection process. and SRS microscopy is highly promising," he continues. "With SRS we can see something that's invisible through conventional surgical microscopy."The SRS in the technique's name stands for stimulated Raman scattering. Named for C.Large format entrees include Diver Sea Scallops with spaghetti vegetables and Provencal orchid sauce stainless steel kitchenware and Bone-In Dry Age Ribe Eye Steak.Another key to staying warm up on the roof: booze.V. Raman, one of the Indian scientists who co-discovered the effect and shared a 1930 Nobel Prize in physics for it, Raman scattering involves allows researchers to measure the unique chemical signature of materials. 

In the SRS technique, they can detect a weak light signal that comes out of a material after it's hit with light from a non-invasive laser. By carefully analyzing the spectrum of colors in the light signal, the researchers can tell a lot about the chemical makeup of the sample.Over the past 15 years, Xiaoliang Sunney Xie of the Department of Chemistry and Chemical Biology at Harvard University — the senior author of the new paper — has advanced the technique for high-speed chemical imaging. By amplifying the weak Raman signal by more than 10,000 times, it is now possible to make multicolor SRS images of living tissue or other materials.It has deployed over 5,000 Motion controller terminals, and is now hiring over 100 people in San Jose, San Francisco and elsewhere. The team can even make 30 new images every second -- the rate needed to create videos of the tissue in real time. 

"Biopsy has been the gold standard for detecting and removing these types of tumors," said Xie, the Mallinckrodt Professor of Chemistry and Chemical Biology. "But this technique, we believe, is better because it's live. Surgeons can now skip all the steps of taking a biopsy,But cyclists here said the work is only a small start on what needs to be done.All are vulnerable —sondaflex to scam artists as well as legitimate art buyers and are urged to use caution. freezing and staining the tissue — this technique allows them to do it all in vivo."A multidisciplinary team of chemists,Exoskeletons or other robotic prosthetics may give disabled folks new freedom or diamond core bit prevent injuries for industrial workers handling heavy loads. neurosurgeons, pathologists and others worked to develop and test the tool. The new paper is the first time SRS microscopy has been used in a living organism to see the "margin" of a tumor – the boundary area where tumor cells infiltrate among normal cells. That's the hardest area for a surgeon to operate – especially when a tumor has invaded a region with an important function.

沒有留言:

張貼留言