8years ago I did ct scan for head 5years Xray for kidney 2months panoramic Xray for teeth 2week Xray of spine 2days mri of spine Can this cause cancer?

No. All x-ray exposure is cumulative, but doses are minimized as much as possible. your Panoramic x-ray, for example, is less radiation than you would receive spending a day in the mountains, or two on the beach. If you are concerned, schedule an appointment with your General Physician for evaluation.