Overview

Question 1

MF RANGE

Answer 1

.1-3.0 T

Question 2

RF RANGE

Answer 2

10-300 MHZ

Question 3

MRI USES ___ & ___ To create 3D IMAGES

Answer 3

Magnetic Fields
Radio waves

Question 4

Radiowave absorbed by patient

Answer 4

Resonance

Question 5

MRI STRUCTURE
1.
2.
3.
4.
5.
6.

Answer 5

Magnet
Shim coil
Gradient Coil
Radiofrequency Coil
Bore
Table

Question 6

2 types BORE

Answer 6

Fringe MF
External MF

Question 7

Old name of MRI

Answer 7

Nuclear Magnetic Resonance

Question 8

MF is measured in __
Commonly used___ ( superconductive)

Answer 8

Tesla
1.5

Question 9

Source of strong MF wherr px is exposed
Located inside bore

Answer 9

Primary Magnet- External MF

Question 10

Localized signal that produces slices (x,y,z)

Answer 10

Gradient Coils

Question 11

X-____ slice
Y-____
Z-____

Answer 11

Sagittal (right left)
Coronal ( front back)
Transverse (head toe)

Question 12

Group homogeneity of Ext. MF

Answer 12

Shim coil

Question 13

A type of bore OUTSIDE gantry that attracts metal and considered hazard. Acts as a scatter Radiation

Answer 13

Fringe MF

Question 14

Source of Frequency acts as a transmitter receiver or both part of electromagnetic spectrum that causes a ionization

Answer 14

RFC- radiofrequency coils

Question 15

final product of rf coils and tissue interaction

Answer 15

Tissue eating

Question 16

two purpose of exposure

Answer 16

Alignment
Precession

Question 17

to align hydrogen proton in body same direction as magnetic force

Answer 17

Alignment

Question 18

happens once patient exposed to strong magnetic field influenced by external magnetic force

Answer 18

Precession

Question 19

rf pulse sent in ____ happened

Answer 19

Resonance

Question 20

happened when rf pulse is turned off

Answer 20

Relaxation

Question 21

three common parameters

Answer 21

PD, T1, T2

Question 22

basic mri signal

Answer 22

FiD
Free induction Decay