Patients who have suffered a stroke can definitely be diagnosed if they undergo a head CT scan or MRI during a physical examination. Stroke is classified into hemorrhagic stroke, ischemic stroke, and tumor-induced stroke. A tumor-induced stroke is caused by a tumor, and hemorrhagic stroke includes cerebral hemorrhage and subarachnoid hemorrhage. Ischemic stroke refers to diseases such as cerebral embolism and cerebral infarction. Whether it is a hemorrhagic or ischemic lesion, over time, they tend to form a softening focus. These lesions are difficult to eliminate, and regardless of how many years have passed, these old lesions can still be seen in a head CT scan or MRI. In cases of stroke caused by brain tumors, the changes in size and location of the lesion can also be clearly seen on a head CT scan. Therefore, strokes can be diagnosed during a physical examination of the patients.