Venous Thromboembolism (VTE) Clinical Trial
Official title:
Molecular Imaging of Active Venous Thrombus With Positron Emission Tomography (PET)
Venous thromboembolism (VTE), which includes deep vein thrombosis (DVT) and/or pulmonary embolism (PE), is a major public health issue. VTE is the third most common acute cardiovascular pathology, after myocardial infarction and stroke. Diagnostic accuracy is essential in the case of VTE, in order to select patients for whom anticoagulant treatment is necessary, and to avoid long-term treatment of patients who will derive no benefit from it. The management of patients with suspected PE is based on diagnostic strategies that use either ventilation-perfusion planar lung scintigraphy or thoracic angioscanner imaging as the cornerstone. These 2 techniques correspond to what might be termed "negative" imaging, i.e. visualization of the vascular repercussions downstream of an obstruction, whatever its nature. A research prospect in the field of VTE diagnosis is the direct marking of the various elements of the active venous thrombus, which could correspond to "positive" thrombus imaging. Numerous studies have already investigated the role of molecular imaging in the diagnosis of VTE, especially in the diagnosis of DVT. However, these studies used conventional scintigraphy to evaluate these tracers, a technique lacking in sensitivity and with insufficient spatial resolution. Nuclear medicine and molecular imaging have undergone a technological revolution since the early 2000s, with the development of positron emission tomography (PET). The technical advantages of PET over conventional scintigraphy include greater sensitivity and higher spatial resolution (4 mm for PET vs. 12 mm for conventional scintigraphy), which may have been the limiting factor in studies already carried out. The aim of this project is to develop a new radiopharmaceutical for use in PET scans, a biomarker of active venous thrombus, with a view to improving the diagnosis of MVTE and hence patient management.
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