acoustique Flashcards

1
Q

valeur freq utilisées en imagerie

A

entre 1 MHz à 15 MHz

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2
Q

valeurs frequ utilisées en thérapie

A

300kHz.

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3
Q

structures très échogènes

A

Contenant de l’air (poumons, intestins) ;

  • Les structures métalliques ;
  • Ou contenant du calcium.
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4
Q

PEU ÉCHOGÈNES

A
  • Contenant du liquide (kystes, vaisseaux).
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5
Q

types ondes électromagnétique

A

planes

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6
Q

types ondes acoustiques

A

longitudinale

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7
Q

effet onde électromagnétique

A

doppler fizeau

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8
Q

effet onde acoustique

A

doppler

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9
Q

fréquence la 3

A

440 Hz

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10
Q

atténuation moyenne des ondes acoustiques dans les tissu bio

A

1dB/cm/MHz.

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