Radiotherapy Flashcards
When is radiotherapy using superficial KV photons used
Lesions on skin surface -<3cm below skin, usually skin and eye lesions
Does LINAC treatment use photons or electrons
Either
Where are LINAC electron treatments used
Skin and lymph nodes close to skin
Are electrons or photons more penetrative
Photons
Why are high dose radiotherapy treatments fractionated over multiple days
Avoid damage to adjacent tissues
Types of radiotherapy
Superficial KV photons
LINAC based
Stereotactic
Brachytherapy
Radioisotopes
Photon therapy
when are LINAC based photon treatments used
Deep tumours
Brachytherapy
Using radioactive seed or implant to deliver targeted radiotherapy
What radioisotopes are used in thyroid and bone cancers
Thyroid - iodine
Bone - strontium
What types of radiotherapy is used for CNS and spinal cord lesions
Photon therapy
What is neoadjuvant chemotherapy
Chemo before primary treatment to downsize cancer
What is primary chemo
Using chemo as main treatment
What is adjuvant chemo
Chemo after primary treatment with surgery/radio
What is concomitant chemo
Chemo and radiotherapy at the same time
