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Fig. 4C —53-year-old man with right upper extremity thrombosis
secondary to lipoma. Maximum intensity projection reconstruction of subtracted
(venous minus arterial) coronal 3D fat-saturated T1-weighted gradient-echo
image (4.2/1.7; flip angle, 25°; matrix, 160 x 256; slice thickness,
2 mm after interpolation) obtained 40 sec after arterial peak of biphasic
injection of double dose of gadolinium (0.1 mL/kg body weight at 2 mL/sec
followed by 0.1 mL/kg body weight at 0.8 mL/sec) shows occlusion of right
subclavian vein (arrowhead), including at level of A;
extensive venous collaterals in right shoulder area are also seen. Note normal
left subclavian artery (arrow). These findings were confirmed by
Doppler sonography examination (not shown).
