The American Cancer Society, the American College of Radiology and Society of Breast Imaging as well as Susan G.

CNN: After the mammogram storm, what should women do?

The American College of Radiology blasted the Columbia University study, arguing that links between CT scans and cancer have never been proved.

FORBES: Cranking Up the Volume

Mammography has helped reduce breast cancer mortality in the United States by nearly one-third since 1990, according to the American College of Radiology.

CNN: After the mammogram storm, what should women do?

Komen for the Cure, American Academy of Family Physicians, American College of Radiology, and even individual health care institutions.

FORBES: The ACA and the Power of the Breast Lobby

Louis radiologist Barbara Monsees, who heads the American College of Radiology's breast-imaging commission, suggests such women start by talking with their doctor about their overall breast-cancer risk.

WSJ: Dense Breasts Pose a Dilemma in the Search for Breast Cancer

Lee, chair of the American College of Radiology Breast Imaging Communications Committee, said straightforward guidelines for screening mammography are necessary because leaving it up to a woman and her doctor is impractical.

CNN: After the mammogram storm, what should women do?

The American College of Radiology is sponsoring a national Dose Index Registry to allow providers to compare their CT doses against national benchmarks, and is a lead sponsor of Image Wisely, a safety campaign.

WSJ: New Tracking of a Patient's Radiation Exposure

Marta Schulman, chair of the American College of Radiology Pediatric Imaging Commission, said the study adds to the impetus that patients should be scanned only when necessary and with the lowest dose of radiation possible.

WSJ: Childhood CT Scans Pose Cancer Risk

"We want to be using the optimal amount not too much and not too little, " says Mr. Morin, who also is the chairman of the Dose Index Registry for the American College of Radiology, based in Reston, Va.

WSJ: Reducing Patient Exposure to Radiation From CT Scans