Fluoroscopy
The part of the image intensifier that absorbs light and produces electrons.
What is the photocathode?
A two-dimensional digital image cell.
What is a pixel?
In this interaction of x-ray with matter an incident x-ray interacts with an atom without ionization.
What is Coherent Scattering?
The dedicated unit used to determine if a patient has osteoporosis.
What is bone densitometry or DEXA?
This is the least penetrating form of ionizing radiation.
What is an alpha particle?
This component s uniquely essential to digital fluoroscopy.
What is an ADC?
The ability of the eye to detect differences in brightness levels in vision.
What is contrast perception?
The two primary forms of x-ray interaction in the diagnostic range.
What are compton scattering and photoelectric interaction?
The number of sets of locks generally on mobile C-arm fluoroscopic equipment.
What is 3?
In reference to magnetism, water is this type of material.
What is diamagnetic?
This is the energy sequence during fluoroscopy.
What is x-rays to light to electrons to light?
This is defined as a loss of brightness around the edge of the fluoroscopic image caused by the curve of the photocathode.
What is vignetting?
This interaction of x-ray with matter contributes most to the radiographic image.
What is photoelectric effect?
This type of x-ray equipment blurs the anatomic structures above and below the level of interest.
What is tomography (linear)?
Filament currents are in this range.
What is 3-6 amps?
An image intensifier tube is identified by the diameter of this.
What is the input phosphor?
Thickness, or width, of the focal plane is called this.
What is a section?
This takes place at only energies above 10MeV.
What is Photodisintegration?
During a panorex examination, the x-ray tube and image receptor move this way.
What is around the patient?
The N shell can hold this many electrons.
What is 32?
Vidicon refers to a type of this.
What is a camera tube?
The fixed point that is placed at the level of the anatomic structures to be imaged during tomography.
What is a fulcrum?
This x-ray interaction involves the ejection of the K-shell electron?
What is Photoelectric absorption?
DEXA stands for this.
What is dual energy x-ray absorptiometry?
X-ray tubes operating at 70 kVp produce x-ray intensities of ______ mircogray of air/mAs at 40 inch SID.
What is 50?