Once injected in the patient, the grains can be detected using a portable magnetic wand - similar to a metal detector and are used to identify the lymph nodes closest to the cancer.
Lymph nodes are part of the lymphatic system, which drains fluid from tissues throughout the body in the bloodstream. If cancer cells obtained in this system, the disease can then spread to other parts of the body. The key to determine if the cancer has spread is to identify the ganglion Sentinel, the node that is closest to the tumor. Once you've located, can remove and check for which cancer cells (a sentinel lymph node biopsy) to see if the disease has reached the lymphatic system. The traditional way to identify the Sentinel lymph node is with aradioactive substance that is injected into the area around the tumor. A device that detects radioactivity to detect Sentinel node is then used. However, this method can be expensive, inconvenient and involvesa health risk. Instead of radiation, the new technology uses tiny magnetic beads - around one hundredth of the size of a blood cell red, made of iron oxide, which generate a magnetic field. They are coveredwith sugar to make them "biocompatible", by which do not damage the tissue. The beads are injected around the tumor and travel in the lymphatic system, Sentry reaches the node within 20 minutes. The surgeon then holds a sensitive wand, called the Sentimag, over the areato pick up a magnetic signal of the grains. A recent study by the University of California, who participated at 160 women with breast cancer, found that the accounts are as effective as the conventional technique of radioactive. The University Hospital of South Manchester is conducting a trial of UK technology. Grains have a shelf life of three years, as opposed to radioactive substances, which have a life span of only six hours, so hospitals and clinics without access to radioactive materials can perform Sentinel node biopsies, said Dr. Eric Mayes, Director Ejecutivo de Endomag, the company behind the innovation Cambridge. The technique is being tested with breast cancer, but in the future it could be used for other types of cancer. "It's a very promising technology that could have several advantages for the patient, the surgeon, the staff and the NHS,' says Jayant Vaidya, Professor of surgeryand Oncology of the University College of London." Use magnetism is very attractive because it could eliminate the risk faced by all involved due to exposure, however small, to radiation.' a version of the magnetic technology has been adapted to help surgeons locate breast tumors before removing them. Typically, mammography and ultrasound are used to locate small tumors before surgery. Then, a radiologist inserts a guide wire to mark the tumor on the day of the surgery. But it can be uncomfortable and cause delays. In one trial, also in theUniversity South Manchester Hospital, radiologists are insertion magnetic 'seeds', known as Magseed, which are the size of a grain of rice,in the tumor up to 30 days before the surgery, so the surgeon can then locate the tumor with a Sentimag rod on the day of the operation. Magseed was approved for use in the United States last year. UK approval is expected this year. Can a tattoo really stop sweating? Tattooscan reduce how much Sudan people, according to new research at the University of soul in United States researchers applied a chemical that stimulates the sweat glands to ten men who had a great arm andnot the other tattoo and measure how much each sweaty arm. Thinkof the tattoo ink permeates the deep layers of the skin, where the sweat glands and can trigger inflammation that damages the glands, which makes them unable to sweat. The researchers warn that this might endanger people with multiple tattoos of blow heat, because the sweat cools the body.
Shockwave treatment for wounds that do not heal
Shock waves can help treat chronic wounds, suggest researchers at the Hospital in Kuala Lumpur, Malaysia. They are testing a small and portable device that emits shockwaves down in 50 people with wounds difficult to heal. Already shock waves are used to break up kidney stones, but less intense forms of therapy have been found to help healsoft tissue.
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