Every woman I've ever talked to has exclaimed the discomfort associated with the breasts being squeezed. CTLM wins by default in that the breast rests naturally...not to mention it doesn't use x-rays or any other hazardous particle. The only other competitor to the CTLM requires the breast be dipped in gel, and doesn't use the patents IMDS possesses
"The CTLM is unique because it uses no x-radiation—only laser light—to create a 3D image. Unlike x-ray mammography, the CTLM never compresses or even touches the breast making the entire exam easy and painless."