Rad Bio Worksheets (part 2) Flashcards
Standardization of film processing techniques, including monitoring and maintenance of all processors in a facility
Quality control program
Hangs over the area of clinical interest to cast a shadow in the primary beam over the patient’s reproductive organs
Shadow shield
Front material in a cassette that can result in a lower radiation dose for patient because a lower radiographic technique is used to produce the recorded image
Carbon Fiber
Device that increases the patient dose
Radiographic Grid
Cup shaped radiopaque device that encloses the scrotum and penis to protect the male reproductive organs from exposure to ionizing radiation
Shaped contact shield
Feature of a radiographic collimator that automatically adjusts the collimator so that radiation file size matches the film size
PBL
Allows the fluoroscopist to see the most recent image without exposing the patient to another pulse of radiation
Last image hold
An interaction that produces a satisfying result through an exchange of information
Effective Communication
Thickness of a designed absorber required to reduce the intensity of the primary beam by 50% of its initial value
HVL
Sheets of aluminum of appropriate thickness localized outside the glass window of the x-rays tube housing above the collimator shutters
Added Filtration
Alternative to using a radiographic grid to reduce scattered radiation during certain examinations
Air gap technique
The distance from the anode focal spot to the radiographic image receptor
SID
The glass envelope encasing the x-ray tube, the insulating oil surrounding the tube, and the glass window in the tube housing
Inherent filtration
Devices used during diagnostic x-ray procedures to protect the reproductive organs from exposure to the useful beam while they are in or within approximately 5cm of properly collimated beam
Gonadal Shielding
Process in which the invisible, or latent image, generated in conventional radiography in produced in a digital format using computer technology; the digital image can be displayed on a monitor for viewing or printed on a laser film when hard copy is needed
Computed Radiography (CR)
Quantity of radiation incident upon an object; backscatter is excluded
ESE
Image produced by computer representation of anatomic information
Digital Image
Radiation exposure received by the male and female reproductive organs
Gonadal dose
X-rays emitted from parts of the tube other than the focal spot
Off focus radiation
An operating mode of fluoroscopic equipment in which exposure rates are significantly higher than normally allowed for routine fluoroscopic procedures; this allows visualization of smaller and lower contrast objects than normally are visible during fluoroscopy
High level control fluoroscopy (HLCF)
The equivalent dose to the reproductive organs that, if received by every human being, would be expected to cause an identical gross genetic injury to the total population as does the sum of the actual doses received by exposed individual population members
Genetically significant dose (GSD)
Faint blotches in the radiographic image produced by an intrinsic fluctuation in the incident photon intensity
Quantum mottle
Radiation that emerges directly from the x-ray tube collimator and moves without deflection toward a wall, door, viewing window, and so on
Useful beam
All the radiation that arises from the interactions of an x-ray beam with the atoms of an object in the path of the beam
Scattered radiation
