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rt 115


distortion is a misrepresentation of size and shape
size distortion in radiography can be _____ only magnification
size distortion is controlled by SID, OID and radiographic distances
as size distortion decreases, the resolution of recorded detail increases
the _____ the SID, the _______ the magnification greater, smaller
examinations of body parts with a large inherent OID warrant a _________ whenever possible large SID
which examinations DOES NOT exhibit an inherently large OID AP lumbar spine
as OID increases and SID remains constant, entrance skin exposure (ESE) increases
large patients receive a greater exposure than small patients because their: SOD is decreased, OID is increased, and entrance skin surface is closer to the source
the magnification factor for a radiographic procedure is calculated at 1.25. It may be assumed that there is a ________ magnification of the object size 125%
what occurs when the TUBE or the image receptor is not properly aligned elongation
what occurs when the PART is improperly aligned foreshortening
proper alignment is achieved when the central ray is ______ to the part and _______ to the image receptor perpendicular, perpendicular
whyen the position of the part is reversed, the direction of the tube angle must be ______ to maintain the relationship reversed
because the xray beam is divergent, minification is impossible
xray tube angulations inherently change the SID, and introduce magnification to some degree
in order to achieve a true SID of 40" with an x-ray tube angle of 30 degrees, the overhead scale should read: 34.6"
performing a routine chest radiograph in the anterior posterior (AP) projection will produce improved resolution of the thoracic spine
a renal calculus that measures 0.2mm in size cannot be visualized with an effective focal spot of 0.5mm focal spot due to penumbral overlap
opening of the intervertebral joints of the cervical spine would best be accomplished with the patient in an AP projection with a 40" SID
object size ratio between image size and MF
kidneys best seen with patient supine
SID/OID MF (magnification factor)
patella inherently magnified in AP projection
Created by: jhill106