1 ADC Calculations Lars Ewell Radiation Oncology University of Arizona Medical Center 2/8/08 1.
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1 ADC Calculations Lars Ewell Radiation Oncology University of Arizona Medical Center 2/8/08 1
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Transcript of 1 ADC Calculations Lars Ewell Radiation Oncology University of Arizona Medical Center 2/8/08 1.
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ADC Across Slices
• ADC needed for entire lesion, NOT for single contour.
• Area/Volume needs to be accounted for.
• Slice spacing also can affect values.
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Imaging Protocol: First Patient• Given standard treatment for GBM(resected):
2Gy/Fx 23 Fx (46Gy) + 2Gy/Fx 17 Fx (14Gy). Tx finished on 2/19/07. Total of 60Gy. This Tx alone would have enabled enrollment in protocol.
• Prescribed additional dose of 15 Gy to same area via Stereotactic Radio Surgery (SRS). Patient at high risk for radiation necrosis. Enrolled/scanned on 3/23/07. Scan time 1 hr 13min.
• Treated with 15 Gy additional radiation on 3/28/07.