#radioscopy

• Actinoscopy — A historical medical term used in the past to designate fluoroscopy or radioscopy; a method of direct, real-time visual examination of the internal structures of the human body by projecting radiological shadows onto a fluorescent screen under the action of X-rays. This early structural technique allowed physicians in the last century to observe organ movements (such as heart pulsations or lung respiration) without developing a photographic plate.