Imaging Types
What imaging method uses radiation to create an internal image?
Radiography/X-ray
What is radiology?
A branch of medicine using radiation to diagnose/treat diseases
What does CT stand for?
Computed Tomography
What does ultrasound use to create images?
High-frequency sound waves
What does an ECG trace?
Electrical activity of the heart
Which imaging technique does not use radiation?
MRI
What substance is given to patients to improve contrast in X-rays?
Contrast medium, e.g., barium, iodine
Name one condition that CT scans can help diagnose.
Muscle and bone disorders, tumors, infections, clots
What does ECG stand for?
Electrocardiogram
What is one condition an ECG can detect?
Cardiac arrhythmia, ischemia, heart attacks
What imaging technique uses sound waves?
Ultrasound
Name two ways contrast medium can be administered.
Swallowed, enema, or injection
Why is MRI considered safer than X-ray or CT?
It does not use radiation
What is the name of the device used in ultrasound?
Transducer
What does an exercise tolerance test help screen for?
Ischemic heart disease
What imaging method uses multiple X-ray views to create cross-sectional images?
CT scan
What type of tissue appears black on an X-ray?
Radiolucent tissues like lungs
Why are MRI images better than CT for some conditions?
More detailed, stronger contrast, any imaging plane
Why might ultrasound results be poor in some patients?
Obesity
What devices are used in an exercise tolerance test?
Bike or treadmill
Which imaging method is used to diagnose heart conditions?
ECG
What type of tissue appears white or light grey on an X-ray?
Radiopaque tissues like bones
Name two contraindications for MRI.
Metallic foreign bodies in the orbits, pacemakers, first trimester of pregnancy
Name one reason ultrasound is a preferred imaging method.
Cheap, quick, non-invasive, no radiation
What physical condition can an ECG help diagnose?
Left ventricular hypertrophy