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Question 17: General Surgery MCQ%u2022 Which of the following is the gold standard for diagnosing deep vein thrombosis (DVT)?%u2022 D-dimer test%u2022 Venography%u2022 Duplex ultrasonography%u2022 CT scan%u2022 MRI%u2022 Answer: Duplex ultrasonography%u2022 Explanation: Duplex ultrasonography is considered the gold standard for diagnosing DVT. It's non-invasive, widely available, and has high sensitivity and specificity. While D-dimer can be used as a screening tool, it's not specific. Venography was historically the gold standard but is invasive and rarely used now.