fluoroscopy (method); indirect radiography
Medical imaging technique where X-ray images are viewed on a fluorescent screen or captured indirectly, rather than on film directly.
Indirect radiography is sometimes used to reduce radiation exposure.
Direct radiography, where X-rays directly expose film or a digital detector, as opposed to the indirect method.
Compound of 間接 (indirect) + 撮影 (photography/radiography) + 法 (method).