PSW FOUNDATION MODULE 6 ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS A NEW
UPDATED VERSION LATEST 2025-2026 (VERIFIED
ANSWERS) ALREADY GRADED A+
Why does beam restriction reduce scatter radiation production? -
ANSWER-By restricting the x-ray beam, less volume of tissue is
irradiated which reduces scatter production in the patient
It's good to decrease patient dose, but as you decrease your field size,
what happens? - ANSWER-There are fewer photons reaching the IR
-The IR exposure decreases
-You need increase mass to maintain IR exposure
Does a higher atomic number produce more or less scatter? - ANSWER-
Less
What is the effect of adding filtration on radiographic exposure? -
ANSWER-Adding filtration decreases radiographic exposure to the
image receptor
,At what KPV does soft tissue penetration occur? - ANSWER-30-40 Kev
How does filtration effect the emission spectrum? - ANSWER-An
increase in filtration, causes a decrease in quantity and an increase in
quality
-The average energy is higher
What is a filter? - ANSWER-Any material designed to selectively absorb
photons from the x-ray beam is called a filter
What are some examples of a filter? - ANSWER-Aluminum
Glass
Oil
Copper
Tin
What is the most common filtering material used in diagnostic
radiology? - ANSWER-Aluminum
How is filtration expressed? - ANSWER-Aluminum equivalency
-Al/Eel
, Where does scatter radiation come from? - ANSWER-The patient
How is scatter radiation produced? - ANSWER--Compton scatter
interaction mostly.
-They can come from Coherent interactions, but not as common
What are the factors contributing to Compton scatter? - ANSWER--kept
-Volume of irradiated material (field size and part thickness)
How does kPV contribute to Compton scatter? - ANSWER-It affects the
penetrability of the beam
What are some words used when we are talking about Compton
scattering? - ANSWER-Recoil
Secondary
Quickly describe the process of Compton scattering - ANSWER--There's
an incident photon
-Hits an outer shell electron
-This creates a scatter photon
-Also knocks electron out of the shell to create a recoil electron
QUESTIONS AND CORRECT DETAILED ANSWERS A NEW
UPDATED VERSION LATEST 2025-2026 (VERIFIED
ANSWERS) ALREADY GRADED A+
Why does beam restriction reduce scatter radiation production? -
ANSWER-By restricting the x-ray beam, less volume of tissue is
irradiated which reduces scatter production in the patient
It's good to decrease patient dose, but as you decrease your field size,
what happens? - ANSWER-There are fewer photons reaching the IR
-The IR exposure decreases
-You need increase mass to maintain IR exposure
Does a higher atomic number produce more or less scatter? - ANSWER-
Less
What is the effect of adding filtration on radiographic exposure? -
ANSWER-Adding filtration decreases radiographic exposure to the
image receptor
,At what KPV does soft tissue penetration occur? - ANSWER-30-40 Kev
How does filtration effect the emission spectrum? - ANSWER-An
increase in filtration, causes a decrease in quantity and an increase in
quality
-The average energy is higher
What is a filter? - ANSWER-Any material designed to selectively absorb
photons from the x-ray beam is called a filter
What are some examples of a filter? - ANSWER-Aluminum
Glass
Oil
Copper
Tin
What is the most common filtering material used in diagnostic
radiology? - ANSWER-Aluminum
How is filtration expressed? - ANSWER-Aluminum equivalency
-Al/Eel
, Where does scatter radiation come from? - ANSWER-The patient
How is scatter radiation produced? - ANSWER--Compton scatter
interaction mostly.
-They can come from Coherent interactions, but not as common
What are the factors contributing to Compton scatter? - ANSWER--kept
-Volume of irradiated material (field size and part thickness)
How does kPV contribute to Compton scatter? - ANSWER-It affects the
penetrability of the beam
What are some words used when we are talking about Compton
scattering? - ANSWER-Recoil
Secondary
Quickly describe the process of Compton scattering - ANSWER--There's
an incident photon
-Hits an outer shell electron
-This creates a scatter photon
-Also knocks electron out of the shell to create a recoil electron
