MONDAY May 20, 2013 — The costly form of radiation therapy that has become the norm for prostate cancer in the United States may be no better than the older, cheaper variety — at least for some men, a new study suggests.
Researchers found that among more than 1,000 U.S. men who had radiation therapy after prostate cancer surgery, the newer form — known as intensity-modulated radiotherapy (IMRT) — had no advantage over the conventional version.
Men who received IMRT were no less likely to be treated for a prostate cancer recurrence over the next few years. And their rates of long-term side effects — such as urinary incontinence and erectile dysfunction — were no lower.
“I think the question is, when is the new technology helpful, and when is it not?” Chen said. “We need to be smart about how we use technology.”
The new findings suggest that when it comes to radiation given after surgery, “newer” does not mean “better.”
Read more: http://www.drugs.com/news/newer-pricier-prostate-cancer-radiation-no-better-than-old-study-44635.html
CHEMTRAILS Exposed on Discovery Channel
What in the World Are They Spraying?
She died of cancer … the press report said … that’s the usual assumption! … really of cancer? Or she died because of chemotherapy????????
Read more: http://www.dailychilli.com/happenings/20416-top-80s-mandarin-star-liu-qiu-yi-dies-of-cancer-at-56
Two weeks later, while the doctor was extracting bone marrow from Dai Peng, he discovered that the actor was suffering from lymphoma. The doctor said the situation was not optimistic and said chemotherapy had to be done as soon as possible. However, Dai Peng reacted negatively to the chemotherapy drugs, so treatment was stopped after a week.
Read more: http://www.asiaone.com/News/Latest%2BNews/Showbiz/Story/A1Story20130514-422553.html
At least four million Americans under age 65 are exposed to high doses of radiation each year from medical imaging tests, according to a new study in The New England Journal of Medicine. About 400,000 of those patients receive very high doses, more than the maximum annual exposure allowed for nuclear power plant employees or anyone else who works with radioactive material.
Dr. Rita Redberg, a cardiologist and researcher at the University of California, San Francisco, who has extensively studied the use of medical imaging, said it would probably result in tens of thousands of additional cancers. It’s certain that there are increased rates of cancer at low levels of radiation, and as you increase the levels of radiation, you increase cancer.
Dr. Reza Fazel, a cardiologist at Emory University, said the use of scans appeared to have increased even from 2005 to 2007, the period covered by the paper. “These procedures have a cost, not just in terms of dollars, but in terms of radiation risk.”
Read more: http://www.nytimes.com/2009/08/27/health/research/27scan.html?_r=0
• In x-ray procedures, x rays pass through the body to form pictures on film or on a computer or television monitor, which are viewed by a radiologist. If you have an x-ray test, it will be performed with a standard x-ray machine or with a more sophisticated x-ray machine called a CT or CAT scan machine.
• In nuclear medicine procedures, a very small amount of radioactive material is inhaled, injected, or swallowed by the patient. If you have a nuclear medicine exam, a special camera will be used to detect energy given off by the radioactive material in your body and form a picture of your organs and their function on a computer monitor. A nuclear medicine physician views these pictures. The radioactive material typically disappears from your body within a few hours or days.
Do magnetic resonance imaging (MRI) and ultrasound use radiation?
MRI and ultrasound procedures do not use ionizing radiation. If you have either of these types of studies, you are not exposed to radiation.
There is no conclusive evidence of radiation causing harm at the levels patients receive from diagnostic xray exams. Although high doses of radiation are linked to an increased risk of cancer, the effects of the low doses of radiation used in diagnostic imaging are not known.
Read more: https://hps.org/documents/meddiagimaging.pdf
Researchers from the Institute for Technology Assessment at the Massachusetts General Hospital Department of Radiology found that there was no mistaking that diagnostic imaging tests were being ordered far more than they deemed necessary. The question that begs to be answered is, “why?”
Many doctors referred their patients to imaging centers that were affiliated with their practice, or were even done by the doctor’s own staff. When a physician has such a close relationship with the provider conducting the imaging study, there is the possibility that the physician will benefit financially from ordering additional imaging studies.
Read more: http://voices.yahoo.com/doctors-order-more-tests-they-benefit-financially-631960.html?cat=5
CT and nuclear medicine tests do have a downside, however: they deliver doses of ionizing radiation from 50 to over 500 times that of a standard x-ray, such as a chest x-ray or mammogram. Scientists have raised concerns that such large doses of radiation plus the widespread and increasing use these diagnostic procedures may, in a small but significant way, pose a cancer risk in the general population.
“The use of CT in particular has gone up dramatically, and we’ve drastically lowered the threshold for using it,” said Dr. Rebecca Smith-Bindman, a visiting research scientist with NCI’s Radiation Epidemiology Branch (REB). “There’s a general belief that if you get a CT scan, you must be reasonably sick and must really need it. This is no longer true, and we are increasingly using CT scans in patients who are not that sick. There’s been drift not only in how often we use it but in how we use it.”
“We’ve only talked about the benefits of CT for the past 20 years, without considering any potential harm” she continued.
Research estimated that approximately 29,000 future cancers could be related to CT scans performed in the United States in that year alone, with women being at higher risk than men. About 35 percent of these cancers were projected to be related to scans performed in patients 35 to 54 years old, and 15 percent related to scans performed in children younger than 18.
The medical community has proposed many ways to reduce radiation exposure from diagnostic medicine without negatively impacting the quality of patient care:
- Reduce the number of CT exams by using other technologies (such as ultrasound or MRI) in cases where they would provide equal diagnostic quality.
- Limit the use of CT in healthy patients who would obtain little benefit (such as whole-body CT screening).
- Limit the use of repeat CT surveillance of patients in whom a diagnosis has already been made, when repeat scanning would lead to little change in their treatment.
- Track and collect information on radiation exposure for individual patients.
Read more: http://www.cancer.gov/aboutnci/ncicancerbulletin/archive/2010/012610/page8
Exposure to medical imaging radiation is a concern in both adults and children. However, radiation exposure in children is of a greater concern because they are more sensitive to radiation than adults. In addition, children have longer life expectancy than adults. With repeated exposure or accumulated exposure to radiation, children may be more likely to develop health problems in the future.
Life time risk of developing cancer increases when a patient undergoes more frequent X-ray exams and at larger doses, according to the FDA. Women who are exposed to the radiation may have higher lifetime risk for developing radiation-associated cancer than men after receiving the same exposures at the same ages.
While experts believe that the risk of developing cancer with radiation exposure is relatively small, radiation exposure through these medical imaging tests should never be taken lightly.
Read more: http://voices.yahoo.com/dangers-medical-imaging-tests-procedures-5452681.html?cat=5
- Getting a CT scan gives a patient as much radiation as 100 to 800 chest X-rays.
- Getting a nuclear medicine study exposes a patient to as much radiation as 10 to 2,050 chest X-rays.
- Getting a fluoroscopic procedure exposes a patient to as much radiation as 250 to 3,500 chest X-rays.
Moreover, doctors may prescribe scans that aren’t medically justified. And since risk from radiation exposure accumulates over a lifetime, certain scans may not be appropriate for people who’ve already had a lot of scans.
Read more: http://www.medicinenet.com/script/main/art.asp?articlekey=114953