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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 4 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 4

From: An overview of the findings of dynamic upper limbs’ arterial and venous duplex in cases of vascular thoracic outlet syndrome

Fig. 4

a Color image of the axillary-subclavian artery junction showing tapered significant narrowing of the artery on arm abduction with a peaking of the artery toward the costo-clavicular space (white open arrow). Note the flow cessation in the examined artery. b Color image for the same arterial segment in another patient showing marked color aliasing due to high-velocity jet of the arterial stenosis at the outlet of the costo-clavicular space. c Color Doppler image showing complete cessation of the arterial flow on arm abduction (open white arrow) and the presence of regional arterial collaterals (white asterisks) circumventing the obstruction. d Spectral Doppler image showing tardus parvus waveform that was interrogated in the distal radial artery on arm abduction. This was correlated clinically with an obliterated or a weak radial pulse

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