Patients have the right to inspect their own medical records. That includes most of the notes and other records that the doctor has prepared about the patient and the progression of their illness. This includes all documents for the current and future treatments, in particular medical history, diagnosis, tests (results), findings, therapies and their impact, interventions, and consents, explanations and medical reports. With electronic records, the doctor must hand out a copy of the medical records to the patient, he may, however charge for the copy.
X-rays, and other documents that cannot easily be copied, must be handed over to the patient by the doctor. This might be important if you want to seek the opinion of another doctor. The doctor may demand that the patient return the documents later.