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Venous duplex accuracy
• 1996 Miller Duplex vs Venography in 220
pts
• venograms positive in 44%
• duplex inadequate above the knee in
1%
• duplex inadequate below the knee in
7%
• duplex sensitivity 98% above knee
• duplex specificty 100% above knee
• duplex sensitivity 85% below knee
duplex specificty 99% below knee