The boost volume covered the primary tumor plus a 1.5-cm margin using a 3-field (posterior and oblique) technique.
Patients were treated in supine position with a 3-field (posterior and two opposed laterals) isocentric technique using 18-MV photon beams daily, five times a week.
We therefore divided recordings into those made in three regions: the primary (A1 and AAF) fields; the posterior fields (PSF and PPF); and the anterior dorsal field (ADF) and pseudosylvian sulcal cortex (pssc) [ 38].
Three-field (posterior-anterior and laterals) or four-field (posterior-anterior, anterior-posterior, and laterals) RT techniques were used.
Epifluorescence images were obtained for sections (1.5 ± 0.4 mm lateral to the midline) labeled with SMI94, with a 20x objective, from both the anterior (2 fields) and posterior (1 field) parts of the corpus callosum (3 fields per section, 4 10 sections per mouse), using a CCD camera and identical parameters.
This observation suggests that Rx function is required cell-autonomously for the formation of the field of posterior pituitary progenitor cells even before the morphogenesis of the posterior pituitary begins.
This shows that Rx function is required for the establishment of a field of posterior pituitary progenitor cells, indicating that the development of the retina and posterior pituitary is regulated by a similar developmental mechanism.
The hypothesis tests whether sealing the tonsillectomy field with posterior pillar mucosa can prevent unwanted outcomes in pediatric tonsillectomy.
All the radiotherapy was CT planned, using a 3 field technique (posterior and two lateral fields), multileaf collimation and with patients having a full bladder during the radiotherapy.
The four parallel opposing fields (anterior, posterior, and opposed lateral fields) were used, and the radiation dose to the adjacent organs was limited as follows: liver ⩽30 Gy, kidneys ⩽20 Gy, and spinal cord ⩽45 Gy).
For lateral fields, the posterior border was at a minimum of 1.5 cm posterior to the posterior aspect of the sacrum and the anterior border was at the posterior margin of the symphysis pubis for T3 lesions and the anterior margin of the symphysis pubis for T4 disease.
