Image Production
This image is created during the initial x-ray exposure when primary x-rays interact with various body tissues
What it is the projected image?
The rate of the flux of photons is referred
What is the Intensity or the Brightness of light?
X-rays with light details on a black background are seen as
What is negative images?
Low kv, low ma, and unusually thick anatomy can all produce
What is quantum mottle?
The latent image is only kept within the IR stored briefly as
What is an analog image?
The terms brightness, contrast, and grayscale should only be used in conjunction with
What is the displayed final image?
X-rays with dark anatomy against a white background is called
What is a "positive image"?
CR plate phosphor crystals
Indirect-conversion DR phosphor crystals
Image intensifier input phosphor crystals
Fiber-optic bundles
Are all examples of this type of mottle?
What is material mottle?
Once captured by the image receptor, the projected image becomes
What is the latent (stored) image?
Differing areas of x-ray intensity or receptor exposure possessed by the projected image at the time of the X-ray exposure
What is subject contrast?
The inherent level of brightness is based off of:
What is radiographer technique?
Insufficient digital sampling is an example of
What is an Aliasing artifact?
The latent image is never seen by the radiographer until it is transformed and viewed as the
What is the displayed digital image?
Proportional difference between two or more different intensities of light present in adjacent details is
What is Contrast?
True or False: Density is the opposite of brightness?
What is True?
Image intensifier
Charged-coupled devices (CCDs)
Can produce this type of noise?
What is electronic noise?
The image is not digitized until it passes through an
What is an analog to digital converter (ADC)?
To see the perfect level of color, brightness, contrast, etc. we need to be in the
What is the optimum range of contrast?
This device used to measure the darkness of different densities on film screen radiographs
What is a densitometer?
Name two ways to improve Image/SNR
Reduce the noise (ex. Scatter/Mottle)
Increase the useful signal (without adding noise along with it)