The catheterization involves intravenous administration of contrast dye which could potentially damage the kidneys in a small number of patients.

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But he also argued that traditional angiograms, in which a catheter is used to inject contrast dye before an X-ray is taken, actually kill one out of 1, 000 patients.

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The Yankees immediately scheduled a more extensive dye-contrast MRI, which showed a significant tear of the labrum, the socket padding that holds the ball of the shoulder joint in place.

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