Chiba Emiko, Sato Noriko, Kimura Yukio, Shigemoto Yoko, Maki Hiroyuki, Arizono Elly, Hamamoto Kohei, Taniguchi Go, Iwasaki Masaki, Ota Miho, Matsuda Hiroshi, Nakagawa Eiji
Department of Radiology, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Japan.
Department of Radiology, School of Medicine, Jichi Medical University, Shimotsuke, Japan.
J Neuroimaging. 2023 Sep-Oct;33(5):731-736. doi: 10.1111/jon.13141. Epub 2023 Jun 25.
Subcortical band heterotopia (SBH) is a malformation of cortical development diagnosed via MRI. Currently, patients with SBH are classified according to Di Donato's classification. We aimed to show a variation of SBH and the usefulness of double inversion recovery (DIR) images.
We retrospectively reviewed the MRI findings of 28 patients with SBH. The patients were classified according to Donato's classification by using conventional MR images, and their DIR findings were reviewed.
Of 28 patients, 20 were grade 1 and 8 were grade 2 according to Di Donato's classification. In 15 of 28 patients, the following four types of atypical MRI findings were detected: asymmetry distribution (four cases), coexistence of thin and thick SBH (five cases), and DIR faint abnormal signal intensity in subcortical white matter (five cases) and in deep white matter (five cases). The latter two types were detected on DIR alone and have not been reported. Additionally, these were identified only in the mild group (Di Donato's classification 1-1 or 1-2).
DIR is a useful MRI sequence for detecting faint white matter signal abnormalities, and it can aid in the accurate classification of SBH and identification of its variations, which may reflect the pathology of SBH.
皮质下带状异位（SBH）是一种通过磁共振成像（MRI）诊断的皮质发育畸形。目前，SBH患者根据迪多纳托分类法进行分类。我们旨在展示SBH的变异情况以及双反转恢复（DIR）图像的实用性。
我们回顾性分析了28例SBH患者的MRI表现。使用传统MR图像根据多纳托分类法对患者进行分类，并对其DIR表现进行回顾。
根据迪多纳托分类法，28例患者中，20例为1级，8例为2级。在28例患者中的15例中，检测到以下四种非典型MRI表现：不对称分布（4例）、薄型和厚型SBH共存（5例），以及皮质下白质（5例）和深部白质（5例）中DIR微弱异常信号强度。后两种类型仅在DIR上检测到，尚未见报道。此外，这些仅在轻度组（迪多纳托分类1-1或1-2）中发现。
DIR是检测微弱白质信号异常的有用MRI序列，有助于SBH的准确分类及其变异的识别，这可能反映了SBH的病理学特征。
