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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Investigation of choice for DVT is
assistant
The correct answer is  . Duplex scanning shows noncompressible vein which is wider than normal.On compression over calf muscles,it does not show any augmentation of flow.Normal venous sound atg the area of femoral vein which disappears during inspiration is conspicuously absent in DVT. Refer page no 224 of SRB's manual of surgery 5 th edition.