Division of Pharmacology, Vascular and Metabolic Diseases, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands.
J Nucl Cardiol. 2010 Oct;17(5):897-912. doi: 10.1007/s12350-010-9263-x.
Current developments in cardiovascular biology and imaging enable the noninvasive molecular evaluation of atherosclerotic vascular disease. Intraplaque neovascularization sprouting from the adventitial vasa vasorum has been identified as an independent predictor of intraplaque hemorrhage and plaque rupture. These intraplaque vasa vasorum result from angiogenesis, most likely under influence of hypoxic and inflammatory stimuli. Several molecular imaging techniques are currently available. Most experience has been obtained with molecular imaging using positron emission tomography and single photon emission computed tomography. Recently, the development of targeted contrast agents has allowed molecular imaging with magnetic resonance imaging, ultrasound and computed tomography. The present review discusses the use of these molecular imaging techniques to identify inflammation and intraplaque vasa vasorum to identify vulnerable atherosclerotic plaques at risk of rupture and thrombosis. The available literature on molecular imaging techniques and molecular targets associated with inflammation and angiogenesis is discussed, and the clinical applications of molecular cardiovascular imaging and the use of molecular techniques for local drug delivery are addressed.
目前心血管生物学和影像学的发展使得能够对动脉粥样硬化血管疾病进行非侵入性的分子评估。从血管外膜血管中发芽的斑块内新生血管已被确定为斑块内出血和斑块破裂的独立预测因子。这些斑块内血管来自血管生成,最有可能受到缺氧和炎症刺激的影响。目前有几种分子成像技术。使用正电子发射断层扫描和单光子发射计算机断层扫描进行分子成像获得了最多的经验。最近,靶向对比剂的开发使得磁共振成像、超声和计算机断层扫描的分子成像成为可能。本文综述了这些分子成像技术在识别炎症和斑块内血管中的应用,以识别易破裂和易发生血栓形成的易损动脉粥样硬化斑块。讨论了与炎症和血管生成相关的分子成像技术和分子靶点的现有文献,并介绍了分子心血管成像的临床应用和局部药物输送的分子技术。
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