Evolution Of Head And Neck Radiotherapy 1970-2005 Escalation Of Doses Through Precise Immobilization Tissue Compensation/Customized Blocks Better Skin Sparing (Megavoltage) Integration of brachytherapy BDCRTSRT/IMRT
Evolution Of Head And Neck Radiotherapy 1970-2005 Escalation Of Doses Through Precise Immobilization Tissue Compensation/Customized Blocks Better Skin Sparing (Megavoltage) Integration of brachytherapy 3DCRT /SRT/ IMRT
Key Issues In Head And Neck Radiotherapy Set up Uncertainties Target Volume Delineation .Precise Treatment Planning Delivery .Locoregional control Overall Survival Overall Treatment Time .Nutritional support Quality of Life
Key Issues In Head And Neck Radiotherapy •Set up Uncertainties •Target Volume Delineation •Precise Treatment Planning & Delivery •Locoregional control & Overall Survival •Overall Treatment Time •Nutritional support & Quality of Life
The changing paradigm Wide field radiation Conformal radiation Clinical motivation for high-precision techniques More conformality Better sparing
The changing paradigm Wide field radiation Conformal radiation Clinical motivation for high-precision techniques More conformality = Better sparing
Key Issues In Head And Neck Radiotherapy .Set up Uncertainties .Target Volume Delineation .Precise Treatment Planning Delivery Overall Treatment time .Locoregional control ·Overall Survival. .Nutritional status Quality of life
Key Issues In Head And Neck Radiotherapy •Set up Uncertainties •Target Volume Delineation •Precise Treatment Planning & Delivery •Overall Treatment time •Locoregional control • Overall Survival. •Nutritional status & Quality of life
Conformal Radiotherapy .....The Need For Higher Accuracy Immobilization Devices used .Head Rest alone .POP with Head Rest .Mouth Bite,Nasion Chin support .Thermoplastic Moulds Varying levels of level of Uncertainty Set up errors 5 mm-I cm
Conformal Radiotherapy ……The Need For Higher Accuracy Immobilization Devices used •Head Rest alone •POP with Head Rest •Mouth Bite, Nasion & Chin support •Thermoplastic Moulds Varying levels of level of Uncertainty Set up errors 5 mm-1 cm