Delineation of radiation field
* Gross tumor volume (GTV): disease clinically visible / palpable
* clinical target volume (CTV): equal to GTV
* planned treatment volume (PTV):
* tumors ≤ 2 cm in diameter, with 5-10 mm CTV margin
* tumors\> 2-5 cm in diameter, with 15-20 mm CTV margin
* Marking the GTV and PTV pen back projection
* photograph of the treatment area
* protections of the normal structures with blocks of lead, if necessary
Technical
* Distance focus-skin Tube: 35 cm Locator: 30 and 40 cm
* Sizes Tube: 2, 3 and 4 cm in diameter Finder: 6x8 cm, 8x10 cm
* Energy:
80 kV 140 kv
* Filter 80 kV, 2 mm Al 140 kv, 0.5 mm Copper
* Current Draw: 20 mA
Dose
* tumors ≤ 2 cm in diameter: 5 fractions of 600 cGy, once a day, five times a week - TDF: 89
* tumors \> 2-5 cm in diameter: 10 fractions of 400 cGy, once a day, five times a week - TDF: 96
Clinical revisions every 5 weekly sessions, or a weekly and at the end of treatment.
