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Title	Optimal irradiation dosis in strontium brachytherapy in uveal melanoma
Abstract Nr.	2081

Purpose	To determine the best irradiation dosis for strontium brachytherapy in uveal melanoma. To investigate whether the dosis is best calculated as top dosis or base dosis.
Methods	Review of 135 patients with uveal melanoma, treated with strontium brachytherapy. Different parameters, including age, tumor height, tumor diameter, tumor recurrence, irradiation dosis on the top and base, location of the tumor and ultrasound characteristics were categorised.
Results	Mean age was 64 years at the time of the treatment, mean diameter 9 mm and mean height 4 mm. COMS classification defined 44 tumors as small and 87 as medium sized tumors. No local recurrence occured at a top dosis of 75 Gy.
Conclusion	The best irradiation dosis for strontium brachytherapy in uveal melanoma is 75 Gy. The dosis is best calculated as top dosis.
Conflict of interest	No

Authors 1

Last name	MISSOTTEN
Initials	G
Department	Dept Ophthalmology, Catholic University Leuven
City	Leuven

Authors 2

Last name	De Caluwe
Initials	A
Department	Dept Radiotherapy, Catholic University Leuven
City	Leuven

Authors 3

Last name	Van Calster
Initials	J
Department	Dept Ophthalmology, Catholic University Leuven
City	Leuven

Authors 4

Last name	Spileers
Initials	W
Department	AZ
City	Diest

Authors 5

Last name	Van Limbergen
Initials	E
Department	Dept Radiotherapy, Catholic University Leuven
City	Leuven