Can cancer be caused by having a bone scan?

No: There is no evidence that bone scan is related to or caused cancer. Bone scan is used to detect certain process in the bone- like cancer, infection in the bone, fractures etc. If a cancer detected in the bone by a bone scan- it 's not the bone scan that causes the cancer- but mainly there is a cancer somewhere else that spreads to the bone or the cancer originates from the bone itself.

Not likely: A bone scan is low radiation dose nuclear medicine study for detecting abnormal bone metabolism in processes such as tumor, infection and trauma. The radiopharmaceutical is injected intravenously.The radiation dose is reasonable, similar to fluoroscopy or ct. The risk of cancer usually increases with having many high radiation dose examinations.

Essentially not.: There is radiation with a bone scan, but it's reasonably low. Your drive to the clinic/hospital was probably more dangerous than the scan itself.