system
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
Which one of the following is the investigation of choice for suspected deep vein thrombosis of the lower extremity ?
assistant
The correct answer is  Venous duplex ultrasonography is commonly performed to look for evidence of thromboembolism in superficial or deep venous system if lowe limbs. Reference:Bailey and love, 27th edition, page 988