The JPL/Caltech Medical Engineering Forum (MEF) is requesting your input in defining Challenge Problems in medical engineering and healthcare that JPL space-based technology can uniquely contribute to. In proposing a challenge problem, please have in mind that JPLers are primarily engineers and problem solves. Therefore, you are highly encouraged to make your description as specific as possible, and highly quantitative in nature. Please attach any supporting material that you have to substantiate the challenge problem including recent publications, reports from the national academy of sciences, NIH, or other agencies and institutions that would provide credibility to your claim. Please do not provide any proprietary or sensitive material. Your inputs will be treated with discretion and used for internal planning purposes only. Please select the capability you would like your challenge problem suggestion to be addressed to.