Radiografiamenetelmiä

Radiografiamenetelmiä, often translated as radiographic techniques, refers to the various methods used in radiography to produce images of the internal structure of an object. These techniques primarily rely on the differential absorption of radiation, typically X-rays or gamma rays, as it passes through the object. Denser or more absorbent materials will block more radiation, resulting in lighter areas on the resulting image, while less dense materials allow more radiation to pass through, appearing darker.

One of the most common techniques is conventional radiography, which uses a film or a digital detector to capture the transmitted radiation. Computed radiography (CR) is a digital method that uses a reusable phosphor plate to store the X-ray energy, which is then scanned by a laser to produce a digital image. Digital radiography (DR) is another digital technique that uses a flat-panel detector to convert X-rays directly into a digital signal, offering immediate image display and processing.

Specialized radiographic techniques exist for specific applications. Fluoroscopy, for instance, uses continuous X-ray beams to produce real-time moving images, allowing for dynamic observation of internal processes. Tomography, including CT scans, involves taking multiple X-ray images from different angles around the object and using computer processing to reconstruct cross-sectional images. These various methods are chosen based on the desired level of detail, the type of object being examined, and the specific diagnostic or inspection goals.