Pre_ Multiple attempt quiz - week 2
Identify the correct ways to handle film.
1. Handle film with clean hands 2. Handle film in the appropriate environment/temperatures 3. Handle film gently
List the correct steps in film processing:
1. Wetting 2. Developing 3. Fixing 4. Washing 5. Drying
Match the DR elements/types with the material associated with it. 1. Direct conversion 2. Indirect conversion 3. Capture element 4. Coupling element 5. Collecting element
1.Direct conversion =Amorphous selenium 2.Indirect conversion = Amorphous silicon 3. Capture element = Sodium iodide 4. Coupling element = Fiber optics 5. Collecting element = Photodiode
About what percentage of latent image do we expect to lose in 8 hours?
25%
Identify each step in the CR process: Answers
A. Expose B. Stimulate C. Read D. Erase
Identify each step in the CR process.
A.? B. ? C. ? D. ? Answers: OnNext slide
Identify the base layer.
Lowest level (Black Arrow)
Which of the following is known as picture elements in individual boxes?
Pixels
Which of the following artifacts is caused by inadequate exposure?
Quantum mottle
Which part of a cassetteless indirect digital radiography (DR) image receptor produces light photons?
Scintillation layer
Which of the following is the most common silver halide used in radiographic film?
Silver bromide
___________ is controlled by the size of the matrix and how many pixels can be displayed on the monitor.
Spatial Resolution
Typically, an increase in kVp warrants a: __________ in mAs due to the ________ rule.
decrease & 15%
Which technique is especially useful for scoliosis studies of the spine, long bone studies, or angiographic imaging of peripheral vasculature?
Image stitching
Increased margin for error in overexposure and underexposure to the digital receptor is due to what?
Increased latitude
Which of the following describes the faithful representation of the patient on a medical radiograph?
Diagnostic efficacy
Identify the type of image capture based on the image below.
Direct conversion
What layer is made of gelatin in which photosensitive silver halide crystals are suspended?
Emulsion
Which of the following reflects the amount of x-ray exposure to an image receptor, which looks at the quantity of photons that strike the detector?
Exposure indicators
Increasing kVp, decreases patient dose.
TRUE
What is the first step in establishing an exposure technique system?
The use of a phantom to produce a series of test exposures