Study of Skin Markers for Magnetic Resonance Imaging Examinations

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  • Takatsu Yasuo
    Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University Department of Radiology, Osaka Red Cross Hospital
  • Umezaki Yoshie
    Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University Department of Radiology, Onga Nakama Medical Association Hospital
  • Miyati Tosiaki
    Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University
  • Yamamura Kenichirou
    Department of Radiology, Osaka Medical College Hospital Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University

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Other Title
  • MRI用皮膚マーカについての検討
  • リンショウ ギジュツ MRIヨウ ヒフ マーカ ニ ツイテ ノ ケントウ

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Abstract

In magnetic resonance imaging (MRI), skin markers are used as a landmark in order to make plans for examinations. However, there isn’t a lot of research about the material and shape of skin markers. The skin marker’s essential elements are safety, good cost performance, high signal intensity for T1 weighted image (T1WI) and T2 weighted image (T2WI), and durable. In order to get a high signal-to-noise ratio (SNR) of T1WI and T2WI, baby oil, salad oil and olive oil were chosen, because these materials were easy to obtain and safe for the skin. The SNR of baby oil was the best. Baby oil was injected into the infusion tube, and the tube was solvent welded and cut by a heat sealer. In order to make ring shaped skin markers, both ends of the tube were stuck with adhesive tape. Three different diameters of markers were made (3, 5, 10 cmφ). Ring shaped skin markers were put on to surround the examination area, therefore, the edge of the examination area could be seen at every cross section. Using baby oil in the ring shaped infusion tube is simple, easy, and a highly useful skin marker.

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