Science, 6th Edition by Richard R. Carlton, Arlene M. Adler,
Chapter 1 – 43 2025
Exam based questions and answers
,The relationship between the radiation exposure and optical density for any specific film depends on:
a. the shape of the densitometric curve
b. the position of the sensitometric curve
c. the slope of the sensitometric curve
d. all of the above ANS. all of the above
Geometric properties of the image determine:
a. how accurately anatomic details are recorded
b. the level of sharpness in the image
c. the visibility of the anatomy
d. A and B ANS.A and B
(how accurately anatomic details are recorded & the level of sharpness in the image)
To measure resolution, a _______ is necessary:
a. sensitometer
b. densitometer
c. resolution test pattern
d. resolution camera ANS.resolution test pattern
The maximum resolution the human eye is able to see is approximately:
a. 2 Lp/mm
b. 5 Lp/mm
c. 8 Lp/mm
d. 10 Lp/mm ANS.5 Lp/mm
The spatial resolution of film-screen imaging systems is:
a. excellent
, b. poor
c. horrible--that's why we now use digital imaging
d. none of the above ANS. excellent
Size distortion is also called:
a. elongation
b. magnification
c. shape distortion
d. foreshortening ANS. magnification
When the image of a structure appears longer than the actual structure, there is:
a. size distortion
b. foreshortening
c. magnification
d. elongation ANS .elongation
Shape distortion is caused by:
a. increasing the OID
b. angling the x-ray tube
c. angling the patient
d. B & C ANS.B & C
(Angling the x-ray tube & angling the patient)
The range of exposure intensities an image receptor can detect is:
a. density
b. contrast
c. speed
d. dynamic range ANS. dynamic range