Assessment of Vascularity in Hepatic Tumors
Comparison of Power Doppler Sonography and Intraarterial CO2-Enhanced Sonography
Ran-Chou Chen1,2,
Wei-Tsung Chen1,
Hsing-Yang Tu1,
Nai-Yuan Cheng3,
Chung-Kwe Wang3,
Li-Ying Liao3,
Chaur-Shine Wang3 and
Pao-Huei Chen3
1
Department of Radiology, Taipei Municipal Jen-Ai Hospital, 10, Sec. 4, Jen-Ai
Rd., 106, Taipei, Taiwan.
2
Department of Radiology, School of Medicine, Taipei Medical University,
Taipei, Taiwan.
3
Department of Gastroenterology, Taipei Municipal Jen-Ai Hospital, Taipei,
Taiwan.
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Fig. 1A. —Hepatocellular carcinoma in 59-year-old man. Unenhanced
gray-scale sonogram shows peripheral halo sign (arrow).
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Fig. 1B. —Hepatocellular carcinoma in 59-year-old man. Power Doppler
sonogram shows heterogeneous vascularity (arrow).
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Fig. 1C. —Hepatocellular carcinoma in 59-year-old man. Early phase
CO2-enhanced sonogram shows vascularity (arrow) similar to
that seen in B.
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Fig. 1D. —Hepatocellular carcinoma in 59-year-old man. Late phase
CO2-enhanced sonogram shows greater enhancement (arrow)
than seen in C.
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Fig. 2A. —Hepatocellular carcinoma in 37-year-old man. Unenhanced
gray-scale sonogram shows hypoechoic tumor (arrow).
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Fig. 2B. —Hepatocellular carcinoma in 37-year-old man. Power Doppler
sonogram shows hypovascular tumor and presence of regional vessels
(arrows) along tumor.
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Fig. 2C. —Hepatocellular carcinoma in 37-year-old man. Early-phase
CO2-enhanced sonogram shows intratumoral vessels.
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Fig. 2D. —Hepatocellular carcinoma in 37-year-old man. Late-phase
CO2-enhanced sonogram shows homogeneous tumor enhancement
(arrow).
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Fig. 2E. —Hepatocellular carcinoma in 37-year-old man. Angiogram shows
subtle tumor hypervascularity (arrow).
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Fig. 2F. —Hepatocellular carcinoma in 37-year-old man. Angiogram
obtained 7 months after E shows enlargement and unequivocal
hypervascularity (arrow) of tumor.
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Fig. 3A. —Hepatocellular carcinoma in 65-year-old man after two
transcatheter arterial embolizations. Unenhanced gray-scale sonogram shows
heterogeneous tumor echogenicity (arrow).
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Fig. 3B. —Hepatocellular carcinoma in 65-year-old man after two
transcatheter arterial embolizations. Power Doppler sonogram shows tumor with
peripheral spotted vascularity (arrow).
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Fig. 3C. —Hepatocellular carcinoma in 65-year-old man after two
transcatheter arterial embolizations. CO2-enhanced sonogram shows
heterogeneous enhancement (arrow) in peripheral and central portions
of tumor. Echogenic areas (arrowheads) around mass might be result of
arterioportal shunting of peripheral feeder vessels in this area.
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Fig. 4A. —Hemangioma in 62-year-old woman. Unenhanced gray-scale
sonogram shows mixed echogenicity of tumor with peripheral echogenic ring
(arrow).
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Fig. 4B. —Hemangioma in 62-year-old woman. Power Doppler sonogram shows
peripheral spotted vascularity (arrow) in echogenic ring of mass.
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Fig. 4C. —Hemangioma in 62-year-old woman. CO2-enhanced
sonogram shows peripheral spotted pattern (arrows) similar to that
seen in B.
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Fig. 5A. —Four flow patterns seen on power Doppler sonography. Drawings
show peripheral vessels (A), intratumoral vessels (B),
peripheral spots (C), and intratumoral spots (D).
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Fig. 5B. —Four flow patterns seen on power Doppler sonography. Drawings
show peripheral vessels (A), intratumoral vessels (B),
peripheral spots (C), and intratumoral spots (D).
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Fig. 5C. —Four flow patterns seen on power Doppler sonography. Drawings
show peripheral vessels (A), intratumoral vessels (B),
peripheral spots (C), and intratumoral spots (D).
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Fig. 5D. —Four flow patterns seen on power Doppler sonography. Drawings
show peripheral vessels (A), intratumoral vessels (B),
peripheral spots (C), and intratumoral spots (D).
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Copyright © 2002 by the American Roentgen Ray Society.
