ALARA All-Stars!
What does ALARA stands for ?
As Low As Reasonably Acheivable
What is a dosimeter?
A device used to measure radiation
How many bananas would = 1 chest x-ray?
200-1000 bananas
Which modality results in more radiation (CT or MRI) ?
CT
Where are the phalangies located?
Fingers &/ Toes
What are the 3 cardinal principles of ALARA?
Time, distance and shielding
Where should the dosimeter be worn?
Between chest and pelvis
Which option gives you a higher effective dose, a round trip to Vancouver from Montreal by plane or one Chest X-ray?
The round trip to Vancover
Which results in more dose 80 kVp & 10 mAs or 80 kVp & 20 mAs?
80 kVp & 20 mAs
Where is the calcaneus located?
Within the foot / The heel
What is the safe distance to stand next to the primary beam for a mobile x-ray?
At least 2 meters
Why would someone use two dosimeter?
Pregnancy
Which season are you receiving most natural radiation at home?
Winter
Which results in more dose an AP CXR or a PA CXR?
PA CXR
Where is the xiphoid located?
Chest/Sternum
What is the best way to minimize the patients dose?
No repeats!
What does OSL stands for?
Optically stimulated luminescence dosimeter
What percentage of the annual radiation dose comes from Medical Imaging?
40%-45%
Which pathology requires more dose Osteoporosis or Osteopetrosis?
Osteopetrosis
Where is the ischium located?
The pelvis
Where should you stand during an exam using the C-arm in the OR?
On the image intensifier
What is the main difference between a TLD and an OSL?
The way that data is processed
What is the BERT method?
A method of comparaison between natural background radiation and radiation caused by Medical Imaging
Which pitch during a CT scan would result in more patient dose 0.5 or 1.5?
0.5
Where is the flabella located?
The knee