WEE1 and neoplasm: Due to the recent developments in imaging technologies and biology, molecular imaging provides not only the possibility to visualize the tumor, but also to assess the expression and activity of specific molecules (e.g., protein kinases, enzymes, proteases, etc.)and various processes (including metastasis, tumor cell apoptotic death, angiogenesis, etc.)involved in cancer progression, response to therapy, and recurrence [79].