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Updated: Mar 19, 2026

Blood Flow Imaging with Ultrafast Doppler
Published on: October 14, 2020
Marked change in Doppler waveform: report of two cases of subcutaneous hematoma
Takako Watanabe1, Hideaki Ishida2, Tomoya Komatsuda1
1Center of Diagnostic Ultrasound, Red Cross Hospital, 222-1 Inashirozawa Saruta Kamikitade, Akita, 010-1495, Japan.
Abstract:
We present two cases of subcutaneous hematoma in which color Doppler US revealed colored areas under probe compression, and Doppler waveforms obtained from these areas changed rapidly (from a constant flow to a pulsatile flow, and from a high-velocity flow to a slow-velocity flow) according to the degree of probe compression. In our cases, a sufficient number of blood cells within the lesion moving under probe compression was thought to give rise to Doppler signals and changes in Doppler waveforms.
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