How does an ultrasound work ?

Présentation au sujet: "How does an ultrasound work ?"— Transcription de la présentation:

1 How does an ultrasound work ?
Lab Work #2 How does an ultrasound work ?

2 I. Ultrasound imaging in medicine
Video : how does an ultrasound work ?

3 The development of the fetus can be …....................................... by routine ultrasounds.
An ultrasound is a … that allows a physician to … internal anatomy through the use of … … … …

4 A transducer is placed against the skin of the abdomen and gently …. …
A transducer is placed against the skin of the abdomen and gently … … while it emits … sound waves into the body. The sound waves … or echo on structures … the abdomen such as the fetus.

5 The sound wave signals are … by a computer and … on a monitor. With these images the physician can … the fetus and … the progress of its development.

6 II. How ultrasonic waves allows us to « see » through an opaque object?

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8 Material In front of Side by side none cardboard metal polystyrene cloth plywood

9 Material Transmits the wave Reflects the wave none cardboard metal polystyrene cloth plywood

10 III. How ultrasonic waves allows us to measure a distance?

11 Beginning of the signal from the transmitter
Beginning of the signal from the receiver

12 IV. Ultrasound wave path during an ultrasound imaging examination
Animation : ostralo.net

13 Principe d'un échographie
TP n°2 Principe d'un échographie

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15 I. Comment voir à travers un objet opaque?

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17 Matériau Face à face Côte à côte air carton métal polystyrène tissu contreplaqué

18 matériau Transmet l'onde Reflète l'onde air carton métal polystyrène tissu contreplaqué

19 II. Comment peut-on mesurer une distance avec les ultrasons?

20 Début du signal de l'émetteur
Début du signal du récepteur

21 III. Principes de l'exploration par échographie
Animation : ostralo.net