No abstract available
MeSH terms
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Aged
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Catheterization, Central Venous / instrumentation*
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Catheters, Indwelling*
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Contrast Media / administration & dosage
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Echocardiography*
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Foreign Bodies / diagnostic imaging*
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Heart Atria / diagnostic imaging
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Heart Ventricles / diagnostic imaging
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Humans
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Image Enhancement
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Intercostal Muscles / blood supply*
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Male
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Microbubbles
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Veins / diagnostic imaging