Radiology Subspecialties

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Diagnostic Criteria for Nonviable Pregnancy Early in the First Trimester

Over the past two to three decades, pelvic ultrasonography and measurement of the serum concentration of human chorionic gonadotropin (hCG) have become mainstays in the diagnosis and management of early-pregnancy problems. These tests, which allow earlier detection of pregnancy and more accurate diagnosis of its complications than were previously p ...