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Evaluation of Swallowing Using 320-Detector-Row Multislice CT. Part I: Single- and Multiphase Volume Scanning for Three-dimensional Morphological and Kinematic Analysis

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Abstract

A 320-detector-row multislice computed tomography (320-MSCT) scanner can acquire a volume data set covering a maximum range of 16 cm and can generate axial images 0.5-mm thick at 0.5-mm intervals. Three-dimensional (3D) images reconstructed from the thin axial slices include multiplanar reconstruction and 3D-CT. Single-phase 3D images are reconstructed from 0.175-s data, and multiphase 3D images are created in 29 phases at intervals of 0.1 s. Continuous replay of these 3D images produces four-dimensional moving images. In order to determine the feasibility of the morphologic and kinematic analyses of swallowing using 320-MSCT, single-phase volume scanning was performed on three patients and multiphase volume scanning was performed on one healthy volunteer. The single-phase 3D images clearly and accurately showed the structures involved in swallowing, and the multiphase 3D images were able to show the oral stage to the early esophageal stage of swallowing, allowing a kinematic analysis of swallowing. We developed a reclining chair that allows scanning to be performed with the subject in a semisitting position, which makes swallowing evaluation by 320-MSCT applicable not only to research on healthy swallowing but also to the clinical examination of dysphagia patients.

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Acknowledgments

The authors express special thanks to Professor Shoichi Suzuki of the Faculty of Radiology School of Health Sciences of Fujita Health University for performing radiation dosimetry.

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Authors and Affiliations

  1. Department of Radiology, Fujita Health University School of Medicine, 1-98, Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan

    Naoko Fujii & Kazuhiro Katada

  2. Faculty of Rehabilitation, School of Health Sciences, Fujita Health University, Toyoake, Aichi, Japan

    Yoko Inamoto, Mikoto Baba & Sumiko Okada

  3. Department of Rehabilitation, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan

    Eiichi Saitoh

  4. Department of Otorhinolaryngology, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan

    Satoshi Yoshioka

  5. Department of Radiology, Fujita Health University Hospital, Toyoake, Aichi, Japan

    Toshiaki Nakai & Yoshihiro Ida

  6. Department of Physical Medicine and Rehabilitation, Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University Hospital, and Center for Functional Anatomy and Evolution, Johns Hopkins University, Baltimore, MD, 21287, USA

    Jeffrey B. Palmer

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  1. Naoko Fujii
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  2. Yoko Inamoto
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  3. Eiichi Saitoh
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  4. Mikoto Baba
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  5. Sumiko Okada
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  6. Satoshi Yoshioka
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  7. Toshiaki Nakai
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  8. Yoshihiro Ida
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  9. Kazuhiro Katada
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  10. Jeffrey B. Palmer
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Correspondence to Naoko Fujii.

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Fujii, N., Inamoto, Y., Saitoh, E. et al. Evaluation of Swallowing Using 320-Detector-Row Multislice CT. Part I: Single- and Multiphase Volume Scanning for Three-dimensional Morphological and Kinematic Analysis. Dysphagia 26, 99–107 (2011). https://doi.org/10.1007/s00455-009-9268-2

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  • DOI: https://doi.org/10.1007/s00455-009-9268-2

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