X-Ray Equip Review
Full Wave Rectifiers generate ________ pulses per second
What is 120 Pulses per second
The control console inspection includes a visual of _____________
What are panel lights, switches and tube heat sensors
Beam-Bucky alignment can be tested utilizing what two testing methods?
1. Collimator Test Tool
2. Washer/Coin Method
Positive Beam Limitation Systems must be within
3% SID for either length or width
Combined length/width error </- 4% SID
Purpose of performing repeat analysis is
- to identify common causes
- improve image quality, workflow and staff performance
Half-Wave Rectified Generators are still used in?
What are dental offices?
The Overhead Tube Crane Assembly visual inspection includes_________________________
What is high voltage cables, lock functions, SID/angle accuracy, collimator light
Digital Displays are evaluated utilizing what?
SMPTE Test Patterns/ AAPM (TG18)
X/Y Collimator Accuracy must be within:
+/- 2% of SID
List three common causes of radiographic artifacts.
1. Motion
2. Operator Error (grid lines, tube angle)
3. Failure to remove clothing, jewelry etc.
The filament transformer is a _________ transformer
What is a step down transformer?
Mechanical Visual Inspections for electrical integrity includes___________________________
High-tension Cable insulation (discoloration, loose retaining rings)
What key item is utilized in determining Radiation Output reproducibility?
Dosimeter
At 110 kVp, what must the HVL be?
3.9 mm of aluminum
In DR systems, ghosting is caused by _______________
Residual charge within the TFTs
Three-phase twelve-pulse generators produce _________ voltage ripple.
What is 3.5%
Visual inspections of the patient table include _________________________
Table surface condition/cleanliness, function of angulation/power switches, bucky tray and tabletop material is less than </- mm Al equivalent
SNR is a measure of what radiographic concept?
Image Noise
AEC testing should be completed ______________
At installation and annually
Scratches and dirt show up how, on radiographic images utilizing CR plates?
Power Rating determines_________________
What is the Xray systems maximum power?
Miscellaneous equipment that requires visual inspection includes ________________________
Positioning sponges, patient aids, step stools, IV poles
What is used to determine the HVL and how much is generally required
6-8 mm aluminum plates
Radiation output variability must not exceed _____
5%
Failure in radiation output reproducibility would result in ______________________
Inconsistent image quality, increased repeat exposures, failure to meet SC 35