DSC1520 EXAM PACK ACTUAL PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
⩥ digital receptor exposure is _______ to selected SID.
Answer: inversely proportional to the square of
⩥ In (cassette-based) CR, what is used to express an acceptable
exposure level to the PSP.
Answer: The recommended exposure range---expressed as S number, EI
value, lgM number, dependent on equipment type
⩥ what *units* are used to express an *acceptable exposure level to the
PSP* in cassette radiology.
Answer: S : number
EI: value
IgM: number (Intergalactic Medium)
⩥ what is the term used to describe the value for *the exposure that the
IR receives* in digital radiography.
Answer: EI: exposure indicator
,⩥ what should the radiographer use as a guide to evaluate a CR image
and determine if it has been optimally exposed.
Answer: the exposure indicator (EI) should indicate values within the
recommended range
⩥ From these list of factors, select the one(s) that have an effect on
DIGITAL image contrast/grayscale:
pixel bit depth
window width
window level
matrix size
pixel density
LUT (lookup table).
Answer: pixel bit depth
window width
,LUT (lookup table)
⩥ From these list of factors, select the one(s) that have an effect on
FILM-SCREEN image contrast/grayscale:
grid ratio
SID
kV
mA
protective filtration
focal spot size
OID.
Answer: Grid
kV
, OID
⩥ From these list of factors, select the one(s) that have an effect on
*DIGITAL IMAGE BRIGHTNESS*
pixel bit depth
window width
window level
matrix size
pixel density.
Answer: window level
⩥ From these list of factors, select the one(s) that have an effect on
*DIGITAL IMAGE RESOLUTION*
pixel density
window level
QUESTIONS WITH SOLUTIONS GRADED A+
⩥ digital receptor exposure is _______ to selected SID.
Answer: inversely proportional to the square of
⩥ In (cassette-based) CR, what is used to express an acceptable
exposure level to the PSP.
Answer: The recommended exposure range---expressed as S number, EI
value, lgM number, dependent on equipment type
⩥ what *units* are used to express an *acceptable exposure level to the
PSP* in cassette radiology.
Answer: S : number
EI: value
IgM: number (Intergalactic Medium)
⩥ what is the term used to describe the value for *the exposure that the
IR receives* in digital radiography.
Answer: EI: exposure indicator
,⩥ what should the radiographer use as a guide to evaluate a CR image
and determine if it has been optimally exposed.
Answer: the exposure indicator (EI) should indicate values within the
recommended range
⩥ From these list of factors, select the one(s) that have an effect on
DIGITAL image contrast/grayscale:
pixel bit depth
window width
window level
matrix size
pixel density
LUT (lookup table).
Answer: pixel bit depth
window width
,LUT (lookup table)
⩥ From these list of factors, select the one(s) that have an effect on
FILM-SCREEN image contrast/grayscale:
grid ratio
SID
kV
mA
protective filtration
focal spot size
OID.
Answer: Grid
kV
, OID
⩥ From these list of factors, select the one(s) that have an effect on
*DIGITAL IMAGE BRIGHTNESS*
pixel bit depth
window width
window level
matrix size
pixel density.
Answer: window level
⩥ From these list of factors, select the one(s) that have an effect on
*DIGITAL IMAGE RESOLUTION*
pixel density
window level
