Imaging Word Scramble

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The __________ referred to the sharpness of structural line recorded in the image.	Geometric properties.
Some information is always lost during the process of?	Image formation
___________ is achieved by maximizing the amount of recorded detail in minimizing the amount of distortion.	Optimal geometric quality.
__________ refers to the distinctness or sharpness of the structural lines that make up the recorded image.	Recorded detail
The amount of _______ is a result of the relationship among the size of the focal spot, SID and OID.	Geometric unsharpness.
A __________ cannot be the exact reconstruction of the anatomic structure.	Radiographic image
Manipulating each variable __________________ alters the amount of unsharpness recorded in the image.	Individually or in combination
Focal spot size is determined by?	Filament size
When you select a focal spot size, you're actually selecting a ___________ that will be energized during x-ray production.	Filament size
Small focal sizes are usually ________mm	0.5 to 0.6 mm
Large focal sizes are usually _________mm	1.0 to 1.2 mm
Focal spot size only affects recorded _______	Detail
As focal spot size Increases, unsharpness ________ and recorded detail _______	Unsharpness increases and recorded detail decreases
As focal spot size decreases, unsharpness ________ and recorded detail ________	Unsharpness decreases and recorded detail increases
In general, the smallest focal spot size available should be used in every _______	Exposure.
The exposure is limited with a _________	Small focal size.
When a small focal spot is used, the ________ created during x-ray exposure is concentrated in a small area and could cause tube damage.	Heat
You have to weigh the importance of improved recorded detail for a particular exam or anatomic part against the amount of __________ used.	Radiation exposure.
______________ are equipped with safety circuits that prevent an exposure from being make if that exposure will exceed the tube loading capacity for the focal spot size selected.	Modern generators.
____________ made just under the limit over a long period can still jeopardize the life of the x-ray tube.	Repeated exposures
Intensity of the x-ray beam is altered when changing the __________ between the source and object or object and receptor, some is the amount of unsharpness recorded on the image.	Distance.
Because of the _________________, A geometric relationship exist among the source of x-rays, the object, and the image receptor.	Diverging beam.
Increasing the SID, ______ The amount of unsharpness and ________ The amount of recorded detail in the image.	Decreases unsharpness, increases detail.
Decreasing the SID, _______The amount of unsharpness and ________The amount of recorded detail in the image.	Increases unsharpness, decreases detail.
Increasing that OID, ________ The amount of unsharpness and ________ The recorded detail.	Increases unsharpness, decreases detail
Decreasing the amount of OID, ______ The amount of unsharpness and _______ the detail.	Decreases unsharpness, increases detail
_____________ distances for SID are used in x-ray to accommodate equipment limitations.	Standard
Except for chest and cervical spine exams, a 40 inch or 48 inch SID is the _____	Standard
In addition to the SID, the OID also affects the amount of	Unsharpness
Optimal detail is achieved when the OID is _____	0
But there is always some ______ created between the area of interest and the image receptor.	Distance
As the exit beam leaves the patient, it continues to ______	Diverge.
When _______ is created between the area of interest and the image receptor, they diverging beam records ________ unsharpness within the image	Distance; increased
The distance between the area of interest and the image receptor has a greatest effect on the amount of ________	Geometric unsharpness
When possible, the distance between the area of interest and the image receptor should be kept to a ________	Minimum
The distance between the area of interest in the image receptor has a greatest effect on the amount of geometric unsharpness recorded than does	Focal spot size or SID
The relationship among the variables of focal spot size and distance can be demonstrated by the geometric unsharpness _______	Formula
Focal spot size X OID / SOD =	Geometric unsharpness
Dimensions of the nominal focal spot in millimeters is	Focal spot size
The distance between the object ( Area of interest) And the image receptor.	OID
The distance between the focal spot (source) and the object (area of interest).	SOD
______ = SID - OID	SOD
When calculating the amount of unsharpness, keep the distance in the same units (I.e., inches or centimeters) this will cancel the units and result in	The unsharpness unit in millimeters
Motion unsharpness has the most detrimental effect on the ___________ of the radiographic image	Recorded detail
Motion of the tube, Port, or image receptor cause a decrease in ______	Detail
Motion needs to be ________	Eliminated
Unsharpness resulting from patient motion is known as	Blur
Blur is the most detrimental Factor to maximizing ______	Detail
Unsharpness due to motion is classified as	Voluntary - within the patients control or involuntary - outside the patients control ex. Peristalsis
Most motion results from the patient _____	Moving during an exposure
How would you eliminate emotion?	Shorter exposure time, higher mA. Provide clear instructions for the patients. Using physical Immobilization ex. Sandbags, tape.
Size distortion/magnification refers to an _____________________ compared to its true or actual size.	Increase in the objects image size
Radiographic images of objects are always ______ in terms of the true object size.	Magnified
The _______ used (______ and _______) Play an important part in minimizing the amount of size distortion.	Distances (SID and OID).
Magnification of the true object will occur because there is always some ______	OID
______ Is directly related to magnification	OID
As OID increases, size distortion ( magnification) _________	Increases
As OID decreases, size distortion _________	Decreases
_______. Also influences the total amount of size distortion represented on an image	SID
________ has the greatest effect on size distortion, _______ is still an important factor to control to minimize size distortion.	OID; SID
________ is inversely related to magnification.	SID
As SID increases, size distortion magnification ________	Decreases
Distortion results from the radiographic ________ and either the size magnification or shape of the anatomic part	Misrepresentation
When the image is distorted, detail is ______	Reduced
The _______________ indicates how much size distortion is demonstrated.	Magnification factor (MF)
SID/SOD=	MF
SID - OID=	SOD

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