SBRT2015

Frame-based vs Frame-less SRS Invasive vs Non-invasive 2 • A! stereotac9c! system! of! external2 coordinates2 used! for! localisa9on!and!posi9oning! • The!pa9ent!is!rigidly!fixed!to!a!stereotac9c!system!using! invasive!techniques,! ideal2for2single2frac0on2

• Posi9oning! in!a!mask!system!with! real20me2 imaging ! control! before!each!treatment! • Mask!system!relocable!used! for2more2than2one2frac0on2