Cancer is the most important problem for the human life. In addition to the high mortality rate
early detection and diagnosis are become crucial to understand cancer but depending on the
type of cancer diagnostic procedures can be quite costly. In the first part a novel system is
represented to localize cancerous regions for stomach images which were taken with computed
tomography (CT). Moreover brain tumor is regarded as the second most important disease after
cancer. In many patients early detection of a brain tumor is vital. Like cancer early
detection and diagnosis are become important. In the second part a novel method and a system
for the diagnosis of a brain tumor non-invasively are represented.
