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mammogram
Age 50 as mammography screening threshold proven unfounded
By Dross at 2010-09-30 21:19
 

The landmark breast cancer screening study of women 40-49, published online in Cancer, has proven that annual mammography screening of women in their 40s reduces the breast cancer death rate in these women by nearly 30 percent. The results of this largest study ever conducted on women in this age group confirm that the use of the age of 50 as a threshold for breast cancer screening is scientifically unfounded. Women should begin getting annual mammograms at age 40.

read more | 12 comments | 2697 reads

Cone-Beam CT faster, potentially more accurate than conventional mammography
By Dross at 2007-12-27 23:45
 

Cone-beam breast CT provides exceptional tissue contrast and can potentially reduce examination time with comparable radiation dose to conventional 2D mammography, according to a new study by a team of researchers from the University of Texas M. D. Anderson Cancer Center in Houston.

Cone-beam breast CT employs a large area x-ray beam in conjunction with a flat panel x-ray detector to scan and generate 3D images of the breast. The scanner is placed below a table on which the patient lies prone with the breast protruding through an opening. Only the breast is exposed to radiation resulting in improved image quality and sparing the rest of the patient’s body from unnecessary radiation exposure. The scan can be completed in less than one minute with a single complete rotation of the x-ray tube-detector gantry around the breast. Unlike conventional CT, the patient is not moved through the gantry during scanning.

read more | 1482 reads

How accurate is your radiologist when giving a mammogram?
By Dross at 2007-12-12 09:57
 

 

According to group health study published recently, the ability of a mammogram to diagnose breast symptoms like lumps is highly dependent on the radiologist that reads them. 

“When a woman gets a mammogram, she wants to know that if she has breast cancer, the mammogram will be likely to detect it,” said study leader Diana Miglioretti, PhD, an associate investigator at Group Health Center for Health Studies. “This is especially important when the woman has a breast concern such as a lump.”

Ideally, this ability to accurately detect cancer (known as “sensitivity”) would be consistently high, with few false-positives—biopsies performed despite the absence of cancer. And it wouldn’t depend on which radiologist was reading the mammograms. “But that’s not what we found,” she added.

read more | 894 reads

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