Tripathi Madhavi, Tripathi Manjari, Kumar Ganesh, Malhotra Arun, Bal Chandra Sekhar
Department of Nuclear Medicine and PET, All India Institute of Medical Sciences, New Delhi, India.
Department of Neurology (Cardiothoracic and Neurosciences Centre), All India Institute of Medical Sciences, New Delhi, India.
Indian J Nucl Med. 2013 Oct;28(4):249-50. doi: 10.4103/0972-3919.121979.
F-18 Fluorodeoxyglucose (FDG) Positron emission tomography/Computed Tomography (PET/CT) has come to play an increasingly important role for the pre-surgical evaluation of drug resistant epilepsy and complements Magnetic Resonance Imaging (MRI) in the evaluation of grey matter heterotopias. This case illustrates the characteristic pattern of metabolic abnormality in diffuse band heterotopia (DBH) which is otherwise called double cortex syndrome. The presence of metabolic activity in the heterotopic inner cortical band and in the overlying true cortex gives rise to the 'double cortex' sign on FDG-PET, concurrent CT provides a good anato-metabolic coregistration.
F-18氟脱氧葡萄糖（FDG）正电子发射断层扫描/计算机断层扫描（PET/CT）在药物难治性癫痫的术前评估中发挥着越来越重要的作用，并且在灰质异位症的评估中补充了磁共振成像（MRI）。本病例说明了弥漫性带状异位症（DBH）（又称双皮质综合征）中代谢异常的特征性模式。异位的内皮质带和上方真正的皮质中存在代谢活性，在FDG-PET上产生“双皮质”征象，同时CT提供了良好的解剖-代谢配准。
