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1. Noncontrast, low-dose images of the chest
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Lung disease (e.g. pneumonia, ILD) |
For dyspneic patients, use
Siemens Flash mode
Siemens Flash mode: This high-pitch dual-source scanning technique reduces scan time and thus motion artifact, but cannot be used in larger patients due to limited field-of-view. to reduce respiratory motion artifact. 1. Noncontrast inspiratory phase images of the chest
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Malignancy |
For dyspneic patients, use
Siemens Flash mode
Siemens Flash mode: This high-pitch dual-source scanning technique reduces scan time and thus motion artifact, but cannot be used in larger patients due to limited field-of-view. to reduce respiratory motion artifact. 1. Venous phase of chest (40-60 seconds)
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Pulmonary embolism |
Images are acquired during quiet breathing or with noninspiratory breath hold. Avoid deep inspiration, which transiently reduces pulmonary arterial enhancement by causing disproportionate influx of unenhanced blood from the IVC. Use
Siemens Flash mode
Siemens Flash mode: This high-pitch dual-source scanning technique reduces scan time and thus motion artifact, but cannot be used in larger patients due to limited field-of-view. to reduce respiratory motion artifact. 1. Pulmonary arterial phase of chest
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