ARRT MRI REGISTRY EXAM |ACTUAL QUESTIONS AND VERIFIED ANSWERS|NEWEST UPDATE|GRADED A+

Question 1

What type of nonionizing electromagnetic radiation does MR use?

A. x-ray

B. Gamma

C. Radiofrequency

D. Alpha
CORRECT ANSWER

C. Radiofrequency




Question 2

Preventing potentially serious injury or death from strong magnetic field strengths
requires:

i. A knowledgeable and concerned MR technologist

ii. Controlled access to the magnetic field

iii. A detailed medical history of anyone entering the room

CORRECT ANSWER

1,2,3




Question 3

When protons spin in place within the atom they create

A. A small magnetic field


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,B. A small hydrogen moment

C. An electrical charge

D. Pressure on the electron

CORRECT ANSWER

A. A small magnetic field




Question 4

The process of producing voltage using magnetic fields is called

A. Electromagnetic induction

B. The Larmor equation

C. Megnetic generation

D. Static electric production

CORRECT ANSWER

A. Electromagnetic induction




Question 5

The steepness of the gradient slope or the power of the gradient is termed

A. Gradient slew rate

B. Gradient amplitude

C. Gradient rise time

D. Gradient direction

CORRECT ANSWER

B. Gradient amplitude




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,Question 6

One Tesla is equal to___gauss

A. 100

B. 1,000

C. 10,000

D. 100,000

CORRECT ANSWER

C. 10,000




Question 7

The static magnetic field of a PERMANENT magnet runs:

A. horizontally from bore to wall

B. Horizontally along the long axis of the patients body

C. In a stright line from the magnet bore to the edge of the room

D. Vertically from the ceiling to the floor

CORRECT ANSWER

D. Vertically from the ceiling to the floor




Question 8

Precessional frequency is determined by the ___equation

A. Faraday

B. Larmor

C. Precessional

D. Magnetic frequency
CORRECT ANSWER



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, B. Larmor




Question 9

Adding additional electric coils to the cryostat to maintain magnetic field homogeneity is
called

A. Active shimming

B. Passive shimming

C. Gross adjustments

D. Active shielding

CORRECT ANSWER

A. Active shimming




Question 10

The _____ line is a perimeter around the scanner defining where the static field is
potentially hazardous

A. 1.5T circle

B. 3.0 T line

C. 3-gauss circle

D. 5-gauss line
CORRECT ANSWER

D. 5-gauss line




Question 11

The rapid loss of voltage induced within the coil after the RF excitation due to relaxation is
called


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