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Samenvatting meetsystemen bewegingsanalyse, basis
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meetsystemen bewegingsanalyse, basis
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MEETSYSTEMENMeettoestelen 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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