PET scans of the human heart showing the effect of a blood clot. The scan on the right shows an undissolved clot has severely restricted blood flow (see mid-section) so that much of the muscle wall is not metabolizing. The scan on the left,taken four days later,demonstrates the effects of t-PA (a protein called tissue-type plasminogen activator) which is instrumental in dissolving fibrin. The clot has dissolved and metabolism has been restored in all but the left side of the heart. (Composite of 4K6890 and 4K6891) | |
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Crédit: | Science Photo Library / Science Source |
Taille de l’image : | 5221 px × 3433 px |
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