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Samenvatting meetsystemen bewegingsanalyse, basis

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meetsystemen bewegingsanalyse, basis

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MEETSYSTEMEN
Meettoestelen is geen analysesysteem  podoloog gebruikt dit om een analyse te doen



DIRECTE METHODE

- Fotografie: serie gebeurtenissen op reeks van foto’s
- Stroboscopie: alles staat op 1 foto geprojecteerd
- Filmografie/ videaografie: een totaalbeeld van de beweging
o Referentiekader: 2D of 3D
o Frequentie = aantale beelden/sec  Hz
o Resolutie = maat voor aantal pixels  bepaald beeldkwaliteit
o calibratie = afstelling van apparatuur
o Markeerplaatsing = markers (3D-analyse = ronde markeringen nodig)
o Modelling = stickfiguur maken van de losse markers

- Opto-elektrisch meetsysteem: van meerder 2D camera’s een 3D-beeld maken
o Op elk segment 3 markers  rotatie ook zichtbaar
o Ghent foot model =voet opdelen in 6 segmenten  meer details

- Markerless tracking: verschil in grijstinten detecteren

- Fluoroscopy: skelet in beeld brengen  geen huidverschuivingen
o Beperkt tot kleine gewrichten en bewegingen


INDIRECTE METHODES

- Ultrasound: zenders op patiënt die geluid geven die geregistreerd worden
- Elektromagnetische systemen: elektromagnetische golven worden uitgestuurd  detectoren
registreren de bewegingen
- Tijdsopnames : staplengte/ stapsnelheid/ cadans
o Stopwatch/ Timing gates / Contactmat/ Footswitch
- Elektrogoniometere = meet hoekveranderingen tussen 2 segmenten  flexie/extensie
- Inertial measurement unit: bakje op segment kleven  meten versnellingen in verschillende
richtingen
o Accelerometrie = meet versnellingen  G-kracht
o Incliometrie = meet hoeken ten opzichte van de horizontale/verticale

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Uploaded on
December 19, 2023
Number of pages
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Written in
2022/2023
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