Question

Q1 Why would using a fixed mAs variable kVp technique chart increase radiation dose to smaller patients?

	A.	Decreased kVp for smaller patients increases radiographic contrast.
	B.	Decreased kVp for smaller patients increases x-ray absorption
	C.	Decreased kVp for smaller patients increases x-ray production
	D.	Decreased kVp for smaller patients decreases x-ray absorption

Q2 In digital imaging, why is a wide exposure latitude an advantage?

	A.	Use a fixed mAs variable kVp technique chart.
	B.	Use a fixed mAs variable kVp technique chart
	C.	Almost any choice of factors will yield an acceptable image.
	D.	Technical factors must be chosen carefully to yield an acceptable image.

Q3 What is the major controlling factor of radiographic contrast?

	A.	mAs
	B.	Exposure time
	C.	kVp
	D.	mA

Q4 What is automatic exposure control?

	A.	Built in software to determine technical factors on your x-ray machine
	B.	Built in software to determine radiographic positioning on your x-ray machine
	C.	A fixed kVp variable mAs technique chart
	D.	A fixed mAs variable kVp technique chart

Q5 What is the major controlling factor of radiographic density?

	A.	mAs
	B.	kVp
	C.	mA
	D.	Exposure time

Q6 What is quantum mottle?

	A.	A grainy appearance on an image due to fewer x-rays creating the image
	B.	An increase in contrast due to using a fixed kVp chart
	C.	A grainy appearance on an image due to more x-rays creating the image
	D.	A decrease in contrast on an image due to fewer x-rays creating the image

Q7 Why are there fewer retakes of x-rays with digital machines?

	A.	It is based on a fixed kVp, variable mAs technique chart.
	B.	The exposure times are shorter so less time for patient to move.
	C.	It has a narrow exposure latitude
	D.	Computer algorithms can correct the image post production

Q8 What is dose creep?

	A.	An decrease in patient exposure due to the narrow exposure latitude of digital machines
	B.	An increase in patient exposure due to the narrow exposure latitude of digital machines
	C.	An decrease in patient exposure due to the wide exposure latitude of digital machines
	D.	An increase in patient exposure due to the wide exposure latitude of digital machines

Q9 What is the major advantage of a fixed kVp variable mAs technique chart?

	A.	Increased radiographic contrast
	B.	Decreased radiographic density
	C.	Consistent radiographic contrast
	D.	Decreased radiographic contrast

Q10 What is exposure latitude?

	A.	Range for technical error in choosing projections
	B.	Finding an optimum kVp
	C.	Choosing factors on a technique chart
	D.	Range for technical error in choosing factors

Answer 1

1. Ans- A) Decreased kVp for smaller patients increases radiographic contrats.

In actual terms higher subject contrast areas usually required larger kVp so as to result in low radipgraphy contrast image.

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