Intro to Diagnostic Imaging
This is the location of the focal spot.
What is the anode?
Adjusting mAs in this direction increases patient dose.
What is up?
If there is not rotation, these structures should be superimposed in V/D and D/V thoracic, and thoracic spinal radiographs.
What are the spine and sternum?
This setting controls the number of x-ray photons produced in a specific period of time.
What is mAs?
Since radiography, CT and fluoroscopy all rely on x-ray radiation, bones appear (blank) in the images from all of these modalities.
What is white?
This is the electrical charge of electrons.
What is negative?
Adjusting kVP in this direction increases scatter radiation.
What is up?
This is the correct position for a patient when being measure for radiography.
What is the position in which the exposure will occur?
Because x-ray photons pass through, and are not absorbed by, low density tissues such as air in lungs, they appear (blank) on the radiograph.
What is black?
In nuclear scintigraphy, this radioisotope is used diagnostically and therapeutically for hyperthyroidism.
What is I-131?
This is the speed x-ray photons travel in a vaccum.
What is the speed of light (or 186,000 miles/sec, or 300,000 kilometers/sec)?
This is where your dosimeter badge should be worn.
What is clipped to thyroid shield?
This is the correct center beam/measurement landmark for thoracic radiographs.
What is the caudal border of the scapula?
Compared to bone imaging, abdominal radiographs have a (blank) kVp setting to decrease contrast.
What is higher?
Acoustic enhancement, reverberation, shadowing and mirror-image are all examples of artifacts in which imagining modality?
What is ultrasound?
The formula for the anode cooling curve includes the number of (blank) taken during a designated period of time.
What are exposures?
This is how defects in the lead in PPE appear on radiographs.
What is black?
This is the lateral radiographic view that would best delineate a lesion in the right lung.
What is left lateral view?
Using a V-trough decreases this distance and increases this distance.
What are SID and OID?
This imaging modality is superior for imaging soft tissues such as tendons and ligaments.
What is MRI?
This feature is needed to redirect excess electricity away from the circuit in order to avoid overloading the circuit.
What is a ground wire?
Shorter exposure time reduces this, but compromises image quality.
What is patient dose?
When viewing a V/D or D/V radiograph, the head cranial aspect will be at the top of the image and the left side of the patient will appear on the (blank) side of the image.
What is the right side?
Increasing OID, intentionally or not, causes this (sometimes useful) artifact?
What is magnification?
This is the type of distortion that occurs when the object is not parallel to the image receptor.
What is foreshortening?