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Diagnostic Sonography
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Abdominal Applications of Ultrasound Contrast Agents
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Diagnostic Sonography
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Quiz 17 :
Abdominal Applications of Ultrasound Contrast Agents
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Quiz 17 :
Abdominal Applications of Ultrasound Contrast Agents
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Most of the research and development of ultrasound contrast agents (UCAs) has centered on creating agents that can:
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Q01
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Answer:
C
Vascular ultrasound agents enhance Doppler flow signals by:
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Q02
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Answer:
B
For a vascular ultrasound contrast agent to be clinically useful, it should:
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Q03
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Answer:
D
Depending on the clinical application, vascular UCAs may be administered via:
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The microbubbles of tissue-specific UCAs are:
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When insonating microbubble-based UCAs, the acoustic pressure present within the acoustic field:
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Ultrasound contrast agents have shown the potential to improve the accuracy of hepatic sonography including:
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Q07
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Which of the following vessels are the first to demonstrate contrast enhancement in the liver?
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The first ultrasound contrast agent to receive FDA approval was used in:
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Q09
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Evaluation of a patient with known cirrhosis often demonstrates a(n):
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Q10
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In harmonic-imaging mode, the echoes from the oscillating microbubbles have a:
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The mechanical index (MI) uses:
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The detection of flow in the hepatic capillaries is identified in the ___________ phase.
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When using ultrasound contrast agents, a lesion that gets progressively echogenic over time is most likely:
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Hepatic cavernous hemangiomas demonstrate only peripheral enhancement during the:
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Several reports have described the contrast-enhanced sonographic appearance of hepatocellular carcinoma as having intense enhancement in the _____________ phase.
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In the early arterial phase, using tissue-specific contrast agents, focal nodular hyperplasia can have a similar appearance to a:
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The rupture of microbubbles results in random:
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Q18
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Tissue-specific ultrasound contrast agents can be considered to be:
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Q19
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Induced acoustic-emission effects are independent of:
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