Basic CT Procedures Flashcards
How are axial CT images oriented
Like you’re looking at the foot of the patient towards the head
How are coronal images oriented
As of the patient were facing the viewer
How is a scout image taken
By moving the patient through the scanner while tube is stationary
We adjust scouts based on what
Start location
End location
Scan FOV
Display FOV
What is the isocenter
The middle of the scan area
Can you adjust scan fov
Yes to include anatomy of interest
What is the SFOV for a head
32 cm
What is scan FOV for a large body
50cm
What is the sfov for a small body or PED
25 cm
What is display field of view
Determines how much of the scan field of view is reconstructed
Why do we adjust smart mA
To maintain adequate exposure
What does reducing pitch do
Provides more detail
Increase pt dose
Increase scan time
How is pitch determined
According to
Nature of study
& pathological indications
What was the first CT replaced with
Pnuemoencephalogram
What are some head CT indications
CVA
Tumors
Hematoma
Hydrocephalus
How is the chin in a head CT
Tucked
Does ICM enter the parenchyma
In a normal BBB no
What will a hemorrhage look like
Bright blood
What does hydrocephalus look like
Huge ventricles
What are discharge instructions
Drink plenty of clear fluids for the next 2 days
What are some chest pathology
Tumors
COPD
Aneurysm
PE
Pneumothorax
Hemothorax
What are the 2 sets for chest images
Lung window
Mediastinum window
What are some abdomen indications
Any concerns about the liver , pancreas, kidney, spleen, and adrenal glands
What are some pelvis indications
Prostatic, cervix, urinary bladder, and ovarian carcinomas
