Systems and methods for targeted magnetic resonance imaging...

A - Human Necessities – 61 – B

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A61B 5/055 (2006.01)

Patent

CA 2455210

This invention relates to MRI-based methods and systems useful for diagnosing and clinically assessing the presence, location, and size of cardiovascular disease-associated stationary targets, e.g., thrombi and atherosclerotic lesions, within the vascular system. Methods and systems of the invention allow for improved anatomical information to be obtained from MRI images and allow the clinician to develop more effective treatment plans. In one aspect, the invention provides a method of determining the presence or absence of a stationary target within the vascular system of a mammal wherein two MRI data sets representing images of the vascular system and the stationary target are acquired after administration of a targeted MRI contrast agent. In another embodiment, both a targeted MRI contrast agent and a vascular MRI contrast agent are administered to a mammal, and both a vascular MRI and a targeted MRI data set are acquired.

L'invention concerne des procédés et des systèmes basés sur l'imagerie par résonance magnétique (MRI) utiles pour diagnostiquer et évaluer sur un plan clinique la présence, la localisation et la dimension de cibles fixes associées à des maladies cardio-vasculaires, par exemple, des thrombus et des lésions athérosclérotiques, à l'intérieur du système vasculaire. Ces procédés et ces systèmes permettent d'améliorer l'obtention d'informations anatomiques à partir d'images MRI et permettent au praticien de mettre en oeuvre des plans de traitement plus efficaces. Dans un aspect, l'invention concerne un procédé permettant de déterminer la présence ou l'absence d'une cible fixe dans le système vasculaire d'un mammifère, ce qui consiste à saisir deux ensembles de données MRI représentant des images du système vasculaire et de la cible fixe après l'administration d'un agent de contraste MRI. Dans un autre mode de réalisation, on administre à ce mammifère à la fois un agent de contraste MRI et un agent de contraste MRI vasculaire et on saisit à la fois un ensemble de données MRI vasculaires et un ensemble de données MRI ciblées.

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