What is the difference between 4d USG and color Doppler scan.Are both same or different. Or 4d USG can be done separately or along with color Doppler? My previous baby was down syndrome. What parameters shud I look for in anomaly scan? My Dual n triple marker test are low risk.
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u had history of down baby so u do NT scan with triple marker test at !2 week of your pregnancy. if it normal than risk will be low and finaly do anomalies scan at 20 week . but i suggest do anomalies scan with radiologist for detail anomalies because 90% anomalies can diagnoed with 2D scan .
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Hi, 4D USG detects all structural anomalies while color Doppler detects outrightly vascular problems, and both can be done in one sitting. For down syndrome nuchal translucence, long bone length, major structural defect are to be looked for.
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