Radiographic appearance of an IACB

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Radiographic appearance of an IACB and its optimal position

An IACB usually appears as a thin tube coursing vertically, just left of midline, along the expected course of the descending thoracic aorta. A small, radiopaque rectangle is usually visible at the tip of an IACB on a frontal chest radiograph and should be located just distal to the left subclavian artery within the proximal descending thoracic aorta below the level of the aortic knob 

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