In depth: medical research

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Today:

In depth: medical research

Small test and big test are planned!

How do you look at the inside of your body?

Radiology = department in the hospital where images of your organs are being made (doctors are called radiologists)

Radiology assistants = make the images or assist the radiologist in making them.

X-rays

X-ray = photograph of the inner part of your body, made with the use of X-radiation

X-radiation = rays that pass the soft tissue of your body, but are obstructed by blood and bones

Bones - white 

Lung tissue- dark

Blood, muscles and organs - different shades between dark and light.

X-ray radiation is harmful when you are exposed to it for too long. Radiologists stand behind a lead screen to block the radiation.

bones

lungs

Thorax photo

thorax photo = X-ray of your chest

With a thorax photo a doctor can see, amongst other things:

• the shape and size of the heart
• if there is fluid in the lungs; white grey spots (pneumonia = longontsteking).

CAT-scan

Sometimes a doctor wants to look inside an organ. 

Tunnel that contains a ring that rotates around the body. 

X-rays come from this ring. The machine scans thin slices of the body. Every slice is turned into a 3D image on the computer.

 

MRI

3D image of organs

During MRI you lie in a tube in which a strong magnet is placed.

Echography

an image of organs made with reflected sound waves

How to practice this:

Make assignments 1-4, 6-11