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Foundation Radiology
CH 38 - Foundations of Radiography/Equipment & Safety
| Question | Answer |
|---|---|
| Term for the concept of radiation protection that all exposures should be kept to. | ALARA |
| Term for a unit of electric current. | Ampere |
| Term for the positive electrode in the x-ray tube. | Anode |
| Term for the basic unit of matter. | Atom |
| Term for breaking radiation; a sudden deceleration of electrons as they interact with highly positively charged nuclei. | Bremsstrahlung Radiation |
| Term for the negative electrode in the x-ray tube. | Cathode |
| Term for the x-rays at the center of the beam. | Central Ray |
| Term for the differences in degree of blackness on an image. | Contrast |
| The portion of the x-ray unit that contains the master switch, light, buttons. | Control Panel |
| Term for the overall darkness or blackness of an image. | Density |
| Term for the process of recording images of the teeth and adjacent structures by exposure. | Dental Radiography |
| Term for the filmless method of capturing an image using an image receptor, electronic signal and computer. | Digital Imaging |
| Term for a change in the size of an image caused by incorrect vertical angulation. | Distortion |
| The amount of energy absorbed by tissues. | Dose |
| Th device used to detect and measure an accumulated dosage of radiation. | Dosimeter |
| Term for the negatively charged particle in the atom. | Electron |
| Term for the ability to do work. | Energy |
| The flexible arm that is attached to the x-ray tubehead. | Extension Arm |
| The effects of radiation that are passed on to future generations through those cells. | Genetic Effects |
| Term for film-based or digitally produced recording of anatomic structures. | Image |
| The recording medium for an image; film, phosphor storage plate or digital. | Image Receptor |
| Term for the total energy of the x-ray beam. | Intensity |
| Term for an electrically charged particle that gain or lose electrons; become unbalanced. | Ion |
| The process by which electrons are removed from the orbital shell atoms through collisions with x-ray photons, causing the harmful effects of radiation in humans. | Ionization |
| Term for the radiation that produces ionization. | Ionized Radiation |
| Term for the highest voltage of x-ray tube used during an exposure; controls the penetrating power of the beam. | Kilovoltage Peak |
| Term for the time between exposure to ionizing radiation and the appearance of symptoms. | Latent Period |
| The devise used to protect the reproductive and blood-forming tissues from scatter radiation. | Lead-Apron |
| Term for the proportional enlargement of an image. | Magnification |
| Term for anything that occupies space and has form or shape. | Matter |
| Term for a unit of measure used to describe the intensity of an electrical current; number of electrons produced. | Milliampere |
| Term for the blurred or indistinct area that surrounds an image. | Penumbra |
| Name of the device worn to measure the personal exposure to ionizing radiation. | Personal Radiation Monitoring Badge |
| Term for a tiny bundle of pure energy that has no weight or mass. | Photon |
| Term for the most penetrating beam produced at the target of the anode. | Primary Beam |
| Term for the mean energy or penetrating ability of the x-ray beam. | Quality |
| Term for the number of x-rays produced in the dental unit; quantity produced is controlled by milliamperage. | Quantity |
| Term for the forms of waves of energy emission through space or material. | Radiation |
| Term for the image produced by exposing films to radiation. | Radiograph |
| Term for the science or study of radiation as used in medicine. | Radiology |
| For of secondary radiation that occurs when an x-ray beam has been deflected from its path by interaction with matter. | Scatter Radiation |
| Term for the x-radiation that is created when the primary beam interacts with matter and has less penetrating creating a fog. | Secondary Radiation |
| Term for the x-rays that come from the target of the x-ray tube; aka-useful beam. | Primary Radiation |
| Term for the image receptor that contains a silicon chip with an electric current. | Sensor |
| The measure of how well an image produces the fine details or outline of an object. | Sharpness |
| The effects of radiation that cause illness and are responsible for poor health that are NOT passed on to offspring. | Somatic Effects |
| The flexible lead shield that is placed securely around the neck. | Thyroid collar |
| The part of the x-ray unit that contains the x-ray tube, transformers and insulating oil. | Tubehead |
| Term for the focal spot in the anode to convert bombarding electrons into energy (either heat or x-ray photons). | Tungsten Target |
| Term for the high-energy ionizing electromagnetic radiation. | X-radiation |
| Radiation that produces ionization, resulting in harmful effects. | Ionizing Radiation |
| master switch, indicator light, selector buttons, exposure button | Control Panel Components in Radiography |
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