Can Fruits and Vegetables Be Used as Substitute Phantoms for Normal Human Brain Tissues in Magnetic Resonance Imaging?

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  • Teramoto Daisuke
    Division of Radiological Science and Technology, Department of Health Sciences, School of Medicine, Hokkaido University
  • Ushioda Yuichi
    Division of Radiological Science and Technology, Department of Health Sciences, School of Medicine, Hokkaido University
  • Sasaki Ayaka
    Division of Radiological Science and Technology, Department of Health Sciences, School of Medicine, Hokkaido University
  • Sakurai Yuki
    Division of Radiology, Sapporo Medical University Hospital
  • Nagahama Hiroshi
    Division of Radiology, Sapporo Medical University Hospital
  • Nakamura Manami
    Graduate School of Health Sciences, Hokkaido University
  • Sugimori Hiroyuki
    Graduate School of Health Sciences, Hokkaido University
  • Sakata Motomichi
    Graduate School of Health Sciences, Hokkaido University

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Other Title
  • MRIにおいて果実・野菜が人体脳組織ファントムになり得るか?
  • 臨床技術 MRIにおいて果実・野菜が人体脳組織ファントムになり得るか?
  • リンショウ ギジュツ MRI ニ オイテ カジツ ・ ヤサイ ガ ジンタイ ノウ ソシキ ファントム ニ ナリ エル カ?

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Various custom-made phantoms designed to optimize magnetic resonance imaging (MRI) sequences have been created and subsequently reported in JSRT. However, custom-made phantoms that correctly match the T1-value and T2-values of human brain tissue (gray matter and white matter) cannot be made easily or quickly. The aim of this project was to search for alternative materials, such as fruits and vegetables, for optimizing MRI sequences. The following eight fruits and vegetables were investigated: apple, tomato, melon, apple mango (Mangifera indica), banana, avocado, peach, and eggplant. Their potential was studied for use in modeling phantoms of normal human brain tissues. MRI (T1- and T2-weighted sequences) was performed on the human brain and the fruits and vegetables using various concentrations of contrast medium (gadolinium) in the same size tubes as the custom-made phantom. The authors compared the signal intensity (SI) in human brain tissue (gray matter and white matter) with that of the fruits and the custom-made phantom. The T1 and T2 values were measured for banana tissue and compared with those for human brain tissue in the literature. Our results indicated that banana tissue is similar to human brain tissue (both gray matter and white matter). Banana tissue can thus be employed as an alternative phantom for the human brain for the purpose of MRI.

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