Consolidation Session 3 Flashcards
Which one of the following statements about MRI is not true?
MRI scanners don’t use ionising radiation
MRI gives excellent soft tissue detail
MRI records carbon nucleus
It is a time consuming process
MRI records carbon nucleus
Which of the following is the most common type of magnet used in MRI machines?
Permanent magnet
Superconducting magnet
Resistive magnet
Temporary magnet
Superconducting magnet
Which of the following components of the MRI machine allows it to choose exactly where in the body to acquire an image?
Gradient magnets
Radiofrequency generating coil
Radiofrequency receiving coil
Gadolinium based contrast
Gradient magnets
Is the following true or false?
‘In T1 weighted images fat appears dark and fluid appears bright’
False
Which of the following statements about nuclear medicine is not true?
NM relies on physiological processes to provide an image
NM uses radiopharmaceuticals
NM is solely used for diagnostic purposes
NM includes both 2D and 3D imaging
NM is solely used for diagnostic purposes
Can be also used for therapeutics eg can inject radiopharmaceuticals directed to cancer cells
which of the following statements is not true
Gamma rays have higher energy than alpha and beta particles
During alpha decay a helium atom is ejected
During beta decay the particle ejected can have a +ve or -ve charge
Gamma rays are -vely charged
Gamma rays are -vely charged
The physical half life of Tc-99 metastable is 6h. How much activity is needed at 9am if 80MBq is needed at 9am the next day?
A-2000 MBq
B- 1280 MBq
C- 320 MBq
D- 160 MBq
1280 MBq
Whisch of the following is a radiopharmaceuitical that can be used to measure kidney function?
Tc99m Exametazime
Insulin
Tc99m DTPA
Tc99m Macroaggregated albumin
Tc99m DTPA
Which of the following radiopharmaceuticals is used in PET for detecting malignant tumors?
Tc99m DTPA
18-Fluorodeoxyglucose
Tc99m Pertechnetate
Tc99m HIDA
18-Fluorodeoxyglucose
Which of the following about fluorscopy is not true
Used to produce images of moving structures
Based on the ability of Xrays to produce visible light when they are absorbed by phosphors
Useful for imaging GI
Useful for diagnosing acute ischemic stroke
Useful for diagnosing acute ischemic stroke
Which of the following claims for flat panel detectors being better than traditional image intensifiers is not true?
Images lack geometric distortion
Compact structure allows greater flexibility of movement
They are cheaper than traditional image intensifiers
They may reduce patient radiation dose by 50%
They are cheaper than traditional image intensifiers
