What is an x-ray tube head? X-ray tube, also called Roentgen tube, evacuated electron tube that produces X rays by accelerating electrons to a high velocity with a high-voltage field and causing them to collide
What is an x-ray tube head?
X-ray tube, also called Roentgen tube, evacuated electron tube that produces X rays by accelerating electrons to a high velocity with a high-voltage field and causing them to collide with a target, the anode plate. Only about 1 percent of the electron energy is converted to X rays.
What are the parts of xray tube?
The major x-ray tube components are the cathode and anode assemblies, the tube envelope, the rotor and stator (for rotating anode systems), and the tube housing. These x-ray beam characteristics are important because they affect radiologic parameters such as spatial resolution, image contrast, and patient dose.
How does a dental x-ray Tubehead work?
The heat is carried away from the copper stem and absorbed by the insulating oil in the tubehead. The x-rays travel through the unleaded glass window, the tubehead seal, and the aluminum filter. The aluminum filter removes the longer-wavelength x-rays. The x-ray beam travels through the collimator.
What is the positive side of the x-ray tube?
The anode is the electrically positive (+) side of the x-ray tube circuit Some anodes, like those used for dental x-rays and some portable x-ray machines, are stationary (the anode does not rotate).
What is the principle of X-ray machine?
CT, radiography, and fluoroscopy all work on the same basic principle: an X-ray beam is passed through the body where a portion of the X-rays are either absorbed or scattered by the internal structures, and the remaining X-ray pattern is transmitted to a detector (e.g., film or a computer screen) for recording or …
How dental radiation is produced in the X-ray tube head?
X-rays are created inside the X-ray head. Electrical current passes between the anode and the cathode and hit the target area where X-rays are produced. The X-rays then travel through the PID (positioning indicator device) where the X-ray beam exposes the receptor.
What type of x-ray tube is used today?
The Coolidge tube, also called hot cathode tube, is the most widely used. It works with a very good quality vacuum (about 10−4 Pa, or 10−6 Torr).
What is X-ray tube used for?
An X-ray tube is a vacuum tube that converts electrical input power into X-rays. The availability of this controllable source of X-rays created the field of radiography, the imaging of partly opaque objects with penetrating radiation.