Pary

Question 1

T1 and PD — DIFFERENCE

Answer 1

20-30%

Question 2

T2 difference

Answer 2

40%

Question 3

Best parameter

Answer 3

T2

Question 4

Bright :__ PD, ___T1, ___T2

Answer 4

High, short, long

Question 5

one advantage of mri is no ionizing radiation but ___ used but a disadvantage is it causes heat. Excessive RF result ___ of px

Answer 5

Radiofrequency
High body temp.

Question 6

contrast media combination in mri
Proces:

Answer 6

Gd-DTPA
Chelation

Question 7

Enhacing agent

Answer 7

T1

Question 8

spinning charged particle induces____

Answer 8

MF

Spin charge particle= EC=MF

Question 9

Primary spin

Answer 9

Spinning hydrogen proton

Question 10

Secondary Spin

Answer 10

Precession

Question 11

precession happens when

Answer 11

hydrogen proton exposed to external magnetic field

Question 12

Types of magnet

Answer 12

Permanent, Ressistive and Superconductive

Question 13

Speed of Precession

Answer 13

Larmor Precession

Question 14

flip magnetic force on xy axis

Answer 14

RF PULSE

Question 15

mri signals can only be measured on

Answer 15

xy axis

Question 16

experiment that talks about no current no magnetic field

Answer 16

Oersted

Question 17

experiment that talks about stationary MF does not produce current

Answer 17

Faraday

Question 18

Measure EC

Answer 18

Ammeter

Question 19

Gyromagnetic Ratio
1T=

Answer 19

1T= 42.58 Mhz

Question 20

Vector properties, size and direction , denote by arrows

Answer 20

Magnetic Moment

Question 21

Sum of magnetic moment

Answer 21

Net Magnetization ( M)

Question 22

Sum of inviduals spins

Answer 22

NMV- NET MAGNETIZATION VECTOR

Question 23

produced as a result of alignment of excess hydrogen nuclei with Bo

Answer 23

Magnetization Vector

Question 24

Measurement of MRI Signals

Answer 24

RF PULSE