Radiation Oncology/Toxicity/RTOG

RTOG Radiation Dose Constraints

RTOG Radiation Dose Constraints

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Contouring
 * Dmax: 0.03 cc is approximately 3 mm x 3 mm x 3 mm cube
 * Bladder [0534]: should be contoured from its base to the dome, excluding the CTV1 (the CTV1 includes the bladder neck).
 * Femoral head [0534]: should be outlined down to the interface between the greater and lesser trochanters
 * Rectum [0534]: should be contoured from the anus (at the level of the ischial tuberosities) to the rectosigmoid flexure (this is roughly at about 10 cm) or for a maximum length of 15 cm if the sigmoid flexure if felt to be higher
 * Spinal cord [0631]: The spinal cord should be contoured starting from 5-6 mm above the superior extent of the target volume to 5-6 mm below the inferior extent of the target volume. The spinal cord should be drawn on every slice of simulation CT. The variation of 5-6 mm is due to the pre-determined slice thicknesses of 2.5-3 mm by different CT manufacturers.