Lesson 4 – teacher plan – your hospital - seeing inside

5 minutes- picture hook quiz what part of the body are these pictures from?Introduce learning objectives

10 minutes- introduction to optic fibres and endoscopes - demo optic fibres in lamp - demo laser down stream of water. - demo total internal reflection through glass block5 minutes – video of Michael Mosley getting an endoscope in his stomach on this powerpoint AND OR Video from kerboodle which is good and covers all techniques of seeing

inside the body.

20minutes – playing doctor activity students given cards of techniques (order technique cards from technicians) they should read through. Then give them 4 patients 5 minutes later and they have to discuss/write how to diagnose them.

10mins – drama/making a TV commercial Students are told that they did such a good job at diagnosing that they’ve made it to be an embarrassing bodies doctor on TV! They should sum up what they’ve learned this lesson in 30 seconds.

WHAT PART OF YOUR BODY ARE THESE PICTURES FROM?!

WHAT INSTRUMENTS DO WE USE TO SEE THESE?

EXTENSION – COMMENT ON THE EASE OF USE/ RELIABILITY

/SPEED OF DIAGNOSIS OF THESE METHODS

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Learning Objectives

Describe how optical fibres are used to see inside the body Describe how other EM waves are used to see inside the body

Evaluate the benefits of these methods

Keywords

EndoscopeOptic fibreX-rayGamma ray

Magnetic resonance imaging MRICritical angle

ELECTROMAGNETIC SPECTRUM

Which of these EM waves are used in seeing inside the body? Does the MRI use EM waves?

Does ultrasounds use EM waves?

Gamma rays, X-rays, Visible

No, it uses a strong magnetic field. (strong enough to levitate a frog but not a human!)

We’ve seen these waves before in our phone lesson.

No, it’s a sound wave not an electromagnetic wave!

MICHAEL MOSLEY – ENDOSCOPE IN STOMACH!WARNING: IT’S A BIT GRUESOME

Learning Objectives

Describe how optical fibres are used to see inside the body Describe how other EM waves are used to see inside the body

Evaluate the benefits of these methods

Keywords

EndoscopeOptic fibreX-rayGamma ray

Magnetic resonance imaging MRICritical angle

DOCTOR, WHAT’S WRONG WITH ME!?In groups, read what

diagnosis techniques you have at your disposal.

In 5 minutes time you will be given 4 patients and you must decide which technique is best for which patient.

Learning Objectives

Describe how optical fibres are used to see inside the body Describe how other EM waves are used to see inside the body

Evaluate the benefits of these methods

Keywords

EndoscopeOptic fibreX-rayGamma ray

Magnetic resonance imaging MRICritical angle

YOU’VE PROVED YOURSELF AS SUCH A GREAT DOCTOR

YOU’VE MADE IT ONTO TV!

In groups or pairs make a 30 second advertisement for the different diagnosis techniques available in hospitals.

Extra slides

1 Explain how an optical fibre allows doctors to see inside a patient. Include a labelled ray diagram of total internal reflection in your answer.

2 Evaluate the risks and benefits of using optical fibres in endoscopes instead of using gamma-ray tracers.

EXTENSION

Colonoscopy - Inside the bottomStudents get to control and animation with real pictures!

http://www.insidestory.iop.org/insidestory_flash1.html