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Abstract #1566

Ternary plot method for presenting information acquired by OGSE and PGSE sequences: Evaluation of the peritumoral area in malignant glioma

Toshiaki Taoka1,2, Rintaro Ito1,2, Rei Nakamichi2, Toshiki Nakane2, Kazushige Ichikawa3, Mayuko Sakai4, Nobuyasu Ichinose4, Masanori Ozaki4, Takaya Mori4, Yoshiki Tanaka5, and Shinji Naganawa2
1Department of Innovative Biomedical Visualization (iBMV), Nagoya University, Nagoya, Japan, 2Radiology, Nagoya University, Nagoya, Japan, 3Division of Radiology, Nagoya University Hospital, Nagoya, Japan, 4Canon Medical Systems Corporation, Otawara, Japan, 5SORD Corporation, Chiba, Japan

Synopsis

Keywords: Tumors, Diffusion/other diffusion imaging techniques, OGSEThe characteristics of tissue structures can be estimated by comparing images with different diffusion times acquired using the OGSE and PGSE methods. However, for multiple images, it is difficult to make pixel-by-pixel comparison. We attempted a method for integrating the pixel values of these images using ternary plotting for malignant glioma cases. Tumor areas with abnormal enhancement, peritumoral abnormal signal areas, and distant edematous areas were evaluated. The ternary plot provided immediate visual information. It also highlighted similarities in the tissue characteristics of the tumor, with enhancement to the peritumoral area showing abnormal signals.

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Keywords