从癌症和心脏病到蛀牙和血液疾病的诊断主要依靠核辐射和X射线,或基于化学实验室分析的侵袭性方法。近年来声波已加入这种诊断手段,并用电视和计算机图象方法更好地探测由疾病引起的病理变化。考虑到X射线和核辐射可能的危险副作用,在疾病的探测中必须不用或少用X射线和核辐射的新技术。光学技术或许比X Diagnosis from cancer and heart disease to tooth decay and blood diseases mainly depends on nuclear radiation and X-rays, or aggressive methods based on chemical laboratory analysis. In recent years, sonic waves have been incorporated into this diagnostic tool, and television and computerized imagery have been used to better detect the pathological changes caused by the disease. Given the potentially dangerous side effects of X-rays and nuclear radiation, new technologies for X-ray and nuclear radiation must be eliminated or used less frequently in disease detection. Optical technology may be better than X.