B-Flow

Last revised by Arlene Campos on 13 May 2024

B-Flow is a type of ultrasound imaging that allows visualisation of blood flow by selectively enhancing the signal from moving blood cells while simultaneously suppressing tissue signal 1. Unlike colour Doppler, it does not show flow direction or amplitude.

B-flow is used clinically to image the anatomy of a blood vessel or the overall vasculature of a region. Similar to colour Doppler, it helps select a particular vessel for quatitative spectral Doppler analysis. A B-flow flashlight sign can aid detection of floating and wall adherent arterial thrombi and emboli.

Cases and figures

  • Case 1: normal portal venous flow
  • Case 2: transplant kidney - cine capture
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