Medisch Beeldvormende en Radiotherapeutische Technieken
Radiotherapie
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Samenvatting RT
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CT: bouw, onderdelen en bewegingen.........................................................................................................................1
Totstandkoming CT beelden........................................................................................................................................2
Doel en het begrip CT-lokalisatie.................................................................................................................................2
Procedure CT-lokalisatie..............................................................................................................................................2
Doel van treatmentplanning........................................................................................................................................2
Handelingen MBB’er bij treatmentplanning................................................................................................................2
Ontstaan fotonenstraling in de lineaire versneller.......................................................................................................2
Onderdelen van de lineaire versneller.........................................................................................................................3
Isocentrum..................................................................................................................................................................3
IGRT.............................................................................................................................................................................3
De route van de patiënt op de afdeling radiotherapie.................................................................................................3
Palliatieve en curatieve radiotherapie.........................................................................................................................3
Kanker..........................................................................................................................................................................3
TNM stadiëring............................................................................................................................................................3
Behandelmogelijkheden kanker..................................................................................................................................3
CT: bouw, onderdelen en bewegingen
CT-referentiepunt: waar de lasers elkaar kruisen.
Toplaser: loopt over het midden van de patiënt (navel neus).
Hoogtelaser: loopt over de zijkant van de patiënt.
Transversale laser: laser van links naar rechts.
De lasers zijn een hulpmiddel bij het positioneren van de patiënt.
ITA: Isocentrum tafel afstand. Afstand tussen hoogte laser en de tafel wordt gemeten met een liniaal.
Topogram: 2D afbeelding waarop wordt aangegeven van waar tot waar de CT slices moet maken.
FOV: field of view. Het gemarkeerde gebied van waar tot waar de CT slices moet maken.
Slice: een ‘plakje’ CT-scan
Fractioneringsschema: wordt door de radiotherapeut opgesteld. Aantal fracties x de dosis straling.
Röntgendetector
Röntgenbron
Gantry
Tafel
Röntgenstralen
Bedieningspaneel
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