Physics of Xray
The X-Ray imaging system has one function, and that is to provide a constant flow of electrons that are strong enough to produce and x-ray beam to create an image. There are many different sizes and types of imaging systems but no matter what system you use, every type will have three main sections. Those sections are the control console, the high voltage generator and the x-ray tube. The x-ray tube is located in the exam room, the control console is located in an adjoining room that is separated from the exam room by a lead wall to protect the radiographer from radiation exposure. The wall will have a window so that the patient can be viewed without having to enter the radiation area. The high voltage section will most likely be housed in an equipment cabinet along the wall close to the x-ray tube however, sometimes the exam room will have false ceilings and the generators will be installed there to be hidden. There are two divisions to the main x ray circuit, those are the primary side and the secondary side and I will talk about both of those throughout this paper.
Control Console The Control Console is the section of the imaging system that most Technologists are familiar with. It is the Primary side of the main circuit and it includes the incoming current, the exposure switch, the autotransformer and the primary winding for the step up transformer. Through the Control Console, the tech is able to control the x-ray tube current and the voltage so that the useful x-ray beam that reaches the patient has the right quantity, or the intensity of the beam and is expressed in mR/mAs, and the right quality of x-ray beam, which refers to the penetrability and is expressed in kVp . There are four different things that need to be controlled by the control console, the Line Compensation, kVp, mA and exposure time. Also controlled by the control console are meters to monitor kVp, mA and exposure time. Some consoles will also provide a meter for mAs. All
Control Console The Control Console is the section of the imaging system that most Technologists are familiar with. It is the Primary side of the main circuit and it includes the incoming current, the exposure switch, the autotransformer and the primary winding for the step up transformer. Through the Control Console, the tech is able to control the x-ray tube current and the voltage so that the useful x-ray beam that reaches the patient has the right quantity, or the intensity of the beam and is expressed in mR/mAs, and the right quality of x-ray beam, which refers to the penetrability and is expressed in kVp . There are four different things that need to be controlled by the control console, the Line Compensation, kVp, mA and exposure time. Also controlled by the control console are meters to monitor kVp, mA and exposure time. Some consoles will also provide a meter for mAs. All
References: Website Article http://www.ndt-ed.org/EducationResources/CommunityCollege/Radiography/EquipmentMaterials/xrayGenerators.htm http://faculty.mwsu.edu/radsci/gary.morrison/RADS_1513/Chapters_5&39/X-ray_Circuits_and_Equipment.pdf http://www.wikiradiography.com/page/Physics+of+the+X-Ray+Tube http://en.wikipedia.org/wiki/ Books Sinclair Tousey, Medical electricity and Rontgen rays (3rd Edition) W. B. Saunders Co. 1921 Stewart Bushong, Radiologic Science for Technologist St. Louis: Mosby (9th Edition)