Deep vein thrombosis scans. Magnetic resonance direct thrombus imaging (MRDTI) scans from a patient suffering from deep vein thrombosis (DVT). A DVT blood clot (thrombus) in the leg is seen (2nd row, 1st image, white, lower right). This has moved to the lungs, causing a pulmonary embolism (3rd row, 2nd image, white, upper right), a blockage of the pulmonary artery. MRDTI is a technique for detecting DVT clots, which can develop during long journeys. It is non-invasive, accurate and sensitive, meaning that symptomless clots can be detected. MRDTI also reveals clots in pregnant women without using X-rays. It was developed at the University of Nottingham, UK.
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