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ab
f
Fig. 8.16 (continued)
Y. N. Patrunov et al.
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Fig. 8.17 Right adrenal gland cyst. (a) The grayscale US reveals a roundish anechoic lesion in the place of the right adrenal gland. (b) PDI detects no vascularity. (c) The lesion demonstrates no contrast enhancement (perfusion
defect) with CEUS. (d) TIC proves no lesion enhance­ment (pink ROI), the normal liver parenchyma (yellow ROI) is supplied for reference
8 Kidneys andAdrenals
d
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Fig. 8.17 (continued)
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Y. N. Patrunov et al.
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b
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Fig. 8.18 Right adrenal adenoma. (a) The grayscale US demonstrates a homogeneous isoechoic lesion with regu­lar margins in the place of the right adrenal gland. (b) CDI detects no vascularity. (c) Early arterial phase CEUS image demonstrates peripheral rim-like enhancement. (d) Venous phase CEUS image demonstrates poor homoge­neous enhancement, which is well seen on the background
of the enhanced liver parenchyma. (e) Late phase CEUS image after 4 min demonstrates homogeneous hypoen­hancement. (f) TIC reveals general poor enhancement of the lesion with a peak in the arterial phase (pink ROI), the normal liver parenchyma (yellow ROI) is supplied for reference
8 Kidneys andAdrenals
d
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e
Fig. 8.18 (continued)
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Y. N. Patrunov et al.
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Fig. 8.18 (continued)
8 Kidneys andAdrenals
a
b
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Fig. 8.19 Right adrenal pheochromocytoma. (a) PDI fails to detect any vascularity in the heterogeneous right adrenal lesion. Note the hypoechoic area within the lesion. (b) Arterial phase CEUS image demonstrates nonspecic moderate irregular enhancement with the nonenhanced area, which corresponds to the hypoechoic area.
(c) Venous phase CEUS image shows almost the same enhancement pattern as in the arterial phase with moder­ate enhancement on the periphery and nonenhanced area in the central aspect. The enhancement pattern correlates with the same in CE-CT. (d) Native CT. (e) Venous phase CE-CT. (f) Delayed phase CE-CT
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Y. N. Patrunov et al.
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d
f
Fig. 8.19 (continued)
e
8 Kidneys andAdrenals
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b
Fig. 8.20 Right adrenal sarcoma of large size. (a) The arterial phase CEUS image demonstrates slow irregular enhancement with a large nonenhanced area in the central part of the lesion. (b) Venous phase CEUS image shows gradual enhancement, which spreads from the periphery.
There remains the central nonenhanced area of irregular shape. (c) TIC reveals overall poor enhancement of the lesion with (pink ROI) as compared to the kidney (yellow ROI) and liver (blue ROI) parenchyma
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Y. N. Patrunov et al.
c
Fig. 8.20 (continued)
8 Kidneys andAdrenals
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Fig. 8.21 Right adrenal metastasis. (a) PDI detects increased central and peripheral vascularity in the right adrenal mass. (b) Early arterial phase CEUS image dem­onstrates fast hyperenhancement of the adrenal lesion. (c) The arterial phase CEUS image shows signicant hyper-
enhancement. (d) The venous phase CEUS demonstrates fast washout, which is prominent on the background of the persisting enhancement of the adjacent kidney and liver