1. Medical Imaging Technologies
Medical imaging produces images of organs and tissues within the body for use in diagnosis and treatment

2. Looking For Signs of Trouble
Medical technology allows doctors to “look inside” their patients to diagnose a wide variety of illnesses and injuries

3. X-Ray Most common form of medical imaging
X-Ray is high energy radiation that can go through skin and tissues, but not bone or metal
X-rays are absorbed by dense structures which will appear whiter than less dense structures around it (shows bones and some foreign objects but not soft tissue like skin or muscle)
X-Ray machines produce a radiograph for the radiologist to read

4. X-Ray: Benefits and Drawbacks
Radiographs can be used to check for broken bones and for cavities in your teeth
X-Ray imaging is quick, virtually painless and non-invasive
X-Ray can cause changes and mutations to DNA

5. X-Ray -> Fluoroscopy
Uses X-Rays to produce images that show the movement of organs
Patient may need to ingest a contrast liquid such as barium
Used to study digestive and circulatory function
The image of a blood vessel is called an angiogram

6. X-Ray -> Computerized Axial Tomography (CT)
X-Ray equipment is used to form a 3D image from a series of images taken at different angles of the body
Often used to diagnose cancer, bone injuries and blockages in blood vessels
CT can image bone, soft tissue and blood vessels at the same time
This test is quick, painless and provides detailed information

7. Nuclear Medicine -> Positron Emission Tomography (PET)
The patient is given an injection of radioactive glucose.
Rapidly dividing cancer cells use glucose faster than normal cells so they ‘glow’ with radiation
PET can be used to detect cancer in tissue, to detect heart disease and some brain disorders
                                                                    

8. Magnetic Resonance Imaging MRI
Uses powerful magnets and radio waves to produce detailed 3D images of the body
The magnets interact with the hydrogen atoms (found in H2O)
MRI have a greater contrast between soft tissues than CT or X-ray images. This makes them very useful for diagnosing sports injuries and finding if the injury is to the soft tissue or bone

9. Ultrasound
Uses high frequency sound waves to produce images of body tissue and organs
Sound waves enter the body and are reflected back (like an echo)
They are often used on pregnant women because they are very safe and can give clear images of the fetus

10. Endoscopy
Doctors can use endoscopes to examine the digestive tract and collect tissue samples
Endoscopic surgeries are much less invasive

11. THE
END