Aside from the X-ray doses, mammography has other potential drawbacks. For one, while it is very effective in diagnosing women over 50, it can be far less conclusive in younger women, in which 20 percent of breast cancer cases occur. Further, mammography is not a real-time procedure, so clinical staff could be more prone to miss a problem area. With the new system, patients simply lay down and insert their breasts into the scanning cup – no need for that special gel used in mammography, as the radio frequency method works with oil, milk, even water – and the scanner starts producing 30 images per second that are projected onto a screen. Clinicians can then thoroughly observe a potentially problematic area in real time until they are sure there isn't a problem.