What is unipolar x-ray tube?
The unipolar X-ray tube has a cooled anode at ground potential and a high voltage receptacle socket and the bipolar provides two integrated high voltage receptacle sockets.
What tube is used for dental X-rays?
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 Bipolar x-ray tube?
For inspection applications that require different imaging parameters, dual and single focus X-ray tubes are available, with small focal spots for high-resolution imaging. In addition, Gulmay offers X-ray tubes with Beryllium (Be) windows for low inherent filtration.
What are the 3 parts of the x-ray 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.
What happens in the X-ray tube?
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. The voltage applied to accelerate the electrons is in the range of 30 to 100 kilovolts. …
How does an X-ray tube generate X-rays?
X-rays are commonly produced in X-ray tubes by accelerating electrons through a potential difference (a voltage drop) and directing them onto a target material (i.e. tungsten). Another electron may fill the vacancy and in so doing release an X-ray photon of a specific energy (a characteristic X-ray).
What are the two main components of the x-ray tube?
The x-ray tube contains two principal elements:
- filament (also acts as cathode): boils off electrons by thermionic emission.
- target (also acts as anode): electrons strike to produce x-rays.
What is XRAY collimator?
In radiology, a collimator is an arrangement of absorbers for limiting a beam of X-rays, gamma rays, or nuclear particles to the dimensions and angular spread required for the specific application.
What is the most common cause of x-ray tube failure?
Modes of Failure. The most frequent mode of failure of an x-ray tube is the failure to adequately dissipate the heat generated during normal operation. It is well known that 99%+ of the kinetic energy imparted on the electron beam is lost in the form of heat at the anode target.
What voltage does an x-ray machine use?
In most clinics and hospitals, a standard 220 volt current supplies power to the x-ray machine. The transformer raises the voltage to 100,000’s of volts, the amount of energy necessary to produce x-rays.
What is collimator tube?
collimator, device for changing the diverging light or other radiation from a point source into a parallel beam. An optical collimator consists of a tube containing a convex lens at one end and an adjustable aperture at the other, the aperture being in the focal plane of the lens.
Why is collimator used?
Collimators (beam limiting devices) are used in linear accelerators used for radiotherapy treatments. They help to shape the beam of radiation emerging from the machine and can limit the maximum field size of a beam.
Why choose dunlee X-ray tube technology?
With more than 125 years of experience in innovating X-ray tube technology, Dunlee is a trusted partner for those looking for cost effective solutions paired with outstanding support.
What is dunlee brand?
About Dunlee. Dunlee is a brand of the Philips Company Group and distributes all products, solutions and services for the third-party imaging business. The product portfolio includes CT and X-ray solutions for OEMs, CT replacement tubes and 3D printed tungsten products.
Is dunlee owned by Philips?
About Dunlee Dunlee is a brand of the Philips Company Group and distributes all products, solutions and services for the third-party imaging business. The product portfolio includes CT, MR and X-ray solutions for OEMs, CT replacement tubes and 3D printed tungsten products.
Why dunlee tungsten tubes?
We are capable of processing pure tungsten under controlled conditions and in strict accordance with medical standards. Dunlee’s replacement tubes and support services help reduce total replacement costs and scanner downtime.