Table 2.

Different modalities of radiotherapy available for the treatment of dermatological diseases

TREATMENT	TYPE OF RADIATION	CLINICAL INDICATIONS
Low energy superficial kilovoltage	X-ray	Localised superficial skin cancers
Orthovoltage X-ray	X-rays	Localised superficial skin cancers
High energy megavoltage (MV) photons	X-rays	Rarely used. Skin cancer with deep penetration
Electron Beam Therapy (Linac)	Electrons	Large or thick lesions
Cobalt therapy	Gamma-rays	Like Linac, by which they are often replaced
Brachytherapy	Radioactive sources (e.g. Au, CO, Celsium, Iridium…) localised into tumour tissues (variable energy)	Tumours localised in critical sites