Imaging techniques refer to methods used in medical imaging to visualize internal structures or organs of the body. These techniques use various forms of energy, such as X-rays, radio waves, sound waves, and magnetic fields, to create images that can be analyzed by physicians for diagnosis and treatment planning. Some common imaging techniques include CT scans (computerized tomography), MRI (magnetic resonance imaging), PET scans (positron emission tomography), ultrasound, and X-rays. These methods help in early detection of diseases, monitoring the progress of treatments, and guiding surgeries or other medical procedures.