In treating with total body irradiation, how should the lung blocks be drawn and what dose should the lung receive?
In drawing the lung blocks approximately 1 cm in from the chest wall, diaphragm and mediastinum, should the blocks stop underneath the clavicle or extend up to the apex of the lung? Should the lung receive 5Gy, 6Gy, 7Gy?
Answer from: Radiation Oncologist at Academic Institution
I draw lung blocks 1 cm. insde the edge of peripheral lung including apex of the lung . The doses are usally 5% less than the prscribed doses to central axis . The typical TBI schedule as a conditioning regimen for BMT is 150 cGy BID for 1200 cGy .
Bharat
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