XRAY CORE ! Flashcards
PASS 90%
What is the process of cell division of somatic cell ?
Mitosis
Which of the following are in the correct order going from most to least radiosensitive ?
lymphoid epithelial, muscle
Which of the following structure as a common passage way for both food and air ?
Pharynx
The three parts of the pharynx are ?
nasopharynx, oropharynx, and laryngopharnyx
what are the phase of mitosis ?
Prophase, Metaphase, anaphase, telophase
Medical asepsis is the ___ of microorganisms in the immediate environment ?
Reduction without sterilization
what does res ipsa loquitur mean ?
The things steaks for it self
What does respondent superior mean
The master speaks for itself
Which of the following materials in the most effective as protective barrier ?
Lead
Which of the following is refers to the measuring of the quality of an x ray beam ?
Dosimetry
How much can the whole body dose absorb, eyes, and extremities ?
Whole Body Dose 50mSv
Eyes 150mSv
Extremeties 500mSv
When referring to the whole body dose what is not included
Hands & feet
The dose equivalent limits for radiation workers based on which sources ?
Occupational Exposure
The optically stimulated luminescence dosimeter used which of the following to detect radiation ?
Aluminum Oxide
What is the equivalent dose limit for a embryo-fetus ?
5 mSv or 0.5 mSv per month
What is the whole body dose limit for a 25 year old radiation worker ?
250 mSv
Occupational radiation cannot exceed his/her age time 10mSv
What percentage of the primary exposure to the patient will reach a radiographer standing 1 meter away
0.1%
What is the look up table ?
Is used to along with the histogram a file or stored images for each projection
What are the four requirement for the X-ray production ?
A vacuum, a source of electrons, a target, and a high potential difference.
Below 70% kvp-
Above 70% kvp -
Below - 100 % of Bremsstrahlung
Above - 85% of bremsstrahlung
What is called when the results are uneven distribution of radiation intensity in the x ray beam
Anode heel affect
Radiation that leaved the time housing by any mean other than through the window is called
Leakage
A Recommendation that is necessary to meet the accepted standards is indicated by the use of which term
Shall
Which of the following is best protection from radiation
Distance
The primary radiation barrier in walls and other construction should be contained how much lead
1/16 inch lead
The second Barriers are only required 1/32inch lead
What is the radiation survey instrument ?
Cutie pie
What is a cutie pie ?
Is an instrument designed to detect X-rays, gamma and beta radiation.
Who is responsible for the governing the use of radiation sources ?
Radiation safety officer
The primary factor for radiation protection
Time, distance and Shielding
What is the primary factor in protecting radiographs from scatter radiation
Increasing distance from the patient
What is the lead equivalency for the lead apron ?
0.5 mm lead
To prevent leakage radiation from exposing the patient, the X ray tube must be how much protection lead ?
1.5mm
What combines an automatic exposure control with a computerized technique chart
APT Anatomically Programed technique
If a digital imaging system can record 10 lines per millimeter what is the spatial resolution ?
5 Ip/mm
What is the following affects the attenuation of the x ray beam ?
Thickness of the body part, and type of tissue
Which of follow would be demonstrate if the patient had a left posterior rib trauma ?
LPO & AP
How many times must the primary beam scatter before reaching the radiographer behind the control booth ?
3
What would cause an image to have low contrast ?
Long scale, Many shades of gray, high mAs
What is the document that express a patient choice about his/her future cases ?
Living will
What are the quality of an image that display on a monitor ?
Matrix size, Size of the field, Bit depth
how does quantum noise appear on a digital image
grainy
What is photoemission ?
Electrons when stimulated by light
What is the correct American Heart Association guideline ?
Circulation, Airway, Breathing
What is called when the radiation has passed through an anatomical part and is available for recording
Remnant (exit radiation)
