Which magnet type cannot be turned off?
Anonymous Quiz
3%
Resistive magnet
22%
Permanent magnet
61%
Superconducting magnet
14%
Electromagnet
Superconductivity means:
Anonymous Quiz
16%
High resistance
77%
Zero electrical resistance
3%
High voltage
5%
No current
The coolant commonly used in superconducting magnets is:
Anonymous Quiz
2%
nitrogen
5%
oxygen
93%
liquid helium
0%
water
The Nobel Prize in 2003 was awarded to:
Anonymous Quiz
5%
bloch and purcel
77%
lauterbur and mansfield
16%
damadian and ernst
2%
roentgen
🍓1
Open MRI systems are more suitable for:
Anonymous Quiz
0%
High field imaging
97%
Claustrophobic patients
3%
Fastest scans
0%
Bone density only
The process of improving magnetic field uniformity is called:
Anonymous Quiz
0%
Imaging
93%
shimming
5%
scanning
2%
encoding
The homogeneity of the magnetic field is measured in:
Anonymous Quiz
62%
ppm
15%
hetez
23%
tesla
0%
watts
Passive shimming involves using:
Anonymous Quiz
5%
Electric current
5%
RF pulses
89%
Steel or iron pieces
0%
Gradient coils
A surface coil can "see" to a depth of:
Anonymous Quiz
7%
Double its diameter
9%
Its full diameter
56%
Half of its diameter
28%
One-fourth its diameter
A quadrature coil consists of:
Anonymous Quiz
0%
one coils
71%
two coils
18%
three coils
11%
four coils
Quadrature coils produce how much more signal than single loop coils?
Anonymous Quiz
32%
2 times
25%
1.4 times
28%
three times
15%
half
MRI rooms are shielded from external RF interference using a:
Anonymous Quiz
3%
Lead wall
19%
Copper pipe
68%
Faraday cage
10%
Aluminum sheet
The Earth behaves like a giant:
Anonymous Quiz
17%
elctric motor
74%
par magnet
3%
battery
6%
proton
MRI can produce images in:
Anonymous Quiz
20%
axial plane only
15%
sagittal only
5%
coronal only
60%
any plane
The gyromagnetic ratio for Hydrogen is:
Anonymous Quiz
3%
21.5 MHz/T
81%
42.57 MHz/T
16%
63.8 MHz/T
0%
128 MHz/T
What happens to net magnetization (M) when B0 increases?
Anonymous Quiz
34%
It increases
9%
It decreases
34%
It stays the same
23%
It becomes zero
اول 4 ملازم تم ✅
خطة اليوم: 👇🏻
( محاضرة
نفس النمط: قراية، اختبارات الدكتور، امتحان يمي
اعتذر عن التأخير، في أمان الله brothers
خطة اليوم: 👇🏻
( محاضرة
5,6,7 ⌛⏳
نفس النمط: قراية، اختبارات الدكتور، امتحان يمي
اعتذر عن التأخير، في أمان الله brothers
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