prostate and pelvic lymph node anatomy for …...prostate and pelvic lymph node anatomy for...
TRANSCRIPT
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Prostate and Pelvic Lymph NodeAnatomy for Contouring
I-Chow Joe Hsu, MD
University of California San Francisco
2011 AAPM/COMP MeetingJuly 31-August 4
Vancouver, Canada
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Prostate Anatomy
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L. aniMuscle
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Urethra
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C. spongiosum
Bulb
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CT Contouring
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1. Spiral CT2. ≤ 3 mm thick3. Limit FOV
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1. Bladder wall2. Contrast use3. Bladder wall thickness
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Pelvic Lymph Node Anatomy
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Psoas M.Iliacus M.
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Piriformis M.
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Obturator internus M.
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CT Contouring
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C. Iliac Nodes: 7-mm margin around vessels: extend posterior and lateral borders to psoas and vertebral body
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Presacral Nodes: 10-mm strip over anterior sacrum
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E. Iliac Nodes: 7-mm margin around vessels; extend anterior border by additional 10-mm anterolaterally along iliopsoas muscle to include lateral external nodes
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I. Iliac Nodes: 7-mm margin around vessels; extend lateral borders to pelvic sidewall
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Obturator Nodes: Join external and internal iliac region with 18-mm-wide strip along pelvic sidewall
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