They lacked the knowledge of what it was and how it affected the human body. They would hold still until the skin would turn red for radiation. Both Roentgen and his wife later died of cancer from all the radiation exposure. Since than the concept of the x-ray has evolved and so has the understanding of dangers that come with it. Now diagnostic imaging has expanded from basic diagnostic x-ray, into fluoroscopy, computed tomography, MRI and ultrasound. The purpose of diagnostic imaging is to be able to look through your body and be able to see any pathological conditions, disease, broken bones. When a doctor needs to see more in depth information, they will suggest a different type of radiological approach. The evolution of radiation has allow us to treat and cure disease such as cancer with radiation