X-rays were historically the first radiologic technique used and are still the most commonly ordered in diagnostic imaging. X-rays can be obtained quickly and are inexpensive. Therefore, x-rays are often used as the initial imaging modality. They are often the only imaging required for diagnosis for many diseases; however, an abnormality may be noted on plain film which could require further study with a more advanced imaging equipment such as a CT or MRI.


X-ray Resources:

All About X-ray Exams
X-ray Exams and Safety Concerns