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Cortical Neuron Loss in Post-Traumatic Higher Brain Dysfunction Using 123I-Iomazenil SPECT

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Brain Edema XV

Part of the book series: Acta Neurochirurgica Supplement ((NEUROCHIRURGICA,volume 118))

Abstract

In patients with higher brain dysfunction (HBD) after mild traumatic brain injury (MTBI), diagnostic imaging of cortical neuron loss in the frontal lobes was studied using SPECT with 123I-iomazenil (IMZ), as a radioligand for central benzodiazepine receptor (BZR). Statistical imaging analysis using three-dimensional stereotactic surface projections (3D-SSP) for 123I-IMZ SPECT was performed in 17 patients. In all patients with HBD defined by neuropsychological tests, cortical neuron loss was indicated in the bilateral medial frontal lobes in 14 patients (83 %). A comparison between the group of 17 patients and the normal database demonstrated common areas of cortical neuron loss in the bilateral medial frontal lobes involving the medial frontal gyrus (MFG) and the anterior cingulate gyrus (ACG). In an assessment of cortical neuron loss in the frontal medial cortex using the stereotactic extraction estimation (SEE) method (level 3), significant cortical neuron loss was observed within bilateral MFG in 9 patients and unilateral MFG in 4, and bilateral ACG in 12 and unilateral ACG in 3. Fourteen patients showed significant cortical neuron loss in bilateral MFG or ACG. In patients with MTBI, HBD seemed to correlate with selective cortical neuron loss within the bilateral MFG or ACG where the responsible lesion could be. 3D-SSP and SEE level 3 analysis for 123I-IMZ SPECT could be valuable for diagnostic imaging of HBD after MTBI.

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Conflict of Interest

This study was supported by research funds from the general insurance association of Japan.

We declare that we have no conflict of interest.

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Authors and Affiliations

  1. Department of Neurosurgery, Nakamura Memorial Hospital, South-1, West-14, Chuo-ku, Sapporo, 060-8570, Japan

    Jyoji Nakagawara, Kenji Kamiyama, Masaaki Takahashi & Hirohiko Nakamura

Authors
  1. Jyoji Nakagawara
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  2. Kenji Kamiyama
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  3. Masaaki Takahashi
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  4. Hirohiko Nakamura
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Corresponding author

Correspondence to Jyoji Nakagawara .

Editor information

Editors and Affiliations

  1. School of Medicine, Dept. Neurological Surgery, Nihon University, Oyaguchikami-machi 30-1, Tokyo, 173-8610, Japan

    Yoichi Katayama

  2. School of Medicine, Departments of Neurological Surgery and, Nihon University, 30-1 Oyaguchi Kamimachi, Itabashi-ku, Tokyo, 173-8610, Japan

    Takeshi Maeda

  3. , Department of Clinical Laboratory, Namegata District General Hospital, 98-8 Inouefujii, Namegata 98-8, Ibaraki, 311-3516, Japan

    Toshihiko Kuroiwa

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Nakagawara, J., Kamiyama, K., Takahashi, M., Nakamura, H. (2013). Cortical Neuron Loss in Post-Traumatic Higher Brain Dysfunction Using 123I-Iomazenil SPECT. In: Katayama, Y., Maeda, T., Kuroiwa, T. (eds) Brain Edema XV. Acta Neurochirurgica Supplement, vol 118. Springer, Vienna. https://doi.org/10.1007/978-3-7091-1434-6_46

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  • DOI: https://doi.org/10.1007/978-3-7091-1434-6_46

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  • Publisher Name: Springer, Vienna

  • Print ISBN: 978-3-7091-1433-9

  • Online ISBN: 978-3-7091-1434-6

  • eBook Packages: MedicineMedicine (R0)

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