diagnostic procedure, diagnostic technique - a procedure followed in making a medical diagnosis

radiography - photography that uses other kinds of radiation than visible light

angiography - roentgenographic examination of blood vessels after injection of a radiopaque contrast medium; produces an angiogram

arthrography - roentgenographic examination of a joint after injection of radiopaque contrast medium; produces an arthrogram

cholangiography - roentgenographic examination of the bile ducts after a contrast medium has been injected

encephalography - roentgenography of the brain after spinal fluid has been replaced by a gas (usually oxygen); produces an encephalogram

myelography - roentgenography of the spinal cord to detect possible lesions (usually after injection of a contrast medium into the subarachnoid space)

pyelography - roentgenography of the kidney and ureters (usually after injection with a radiopaque dye)