TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Vol. 52(2017) No. 4

Preface

[title in Japanese]

Yutaka YOSHIDA

Released: August 04, 2017

p.209

Full Text PDF[262K]

Feature

Feature: “Development of Fundamental Technologies for HTS Coils” and “Development of Medical Devicand Systems for Advanced Medical Services”

Hiroshi MIYAZAKI, Atsushi ISHIYAMA

Released: August 04, 2017

p.216

Full Text PDF[101K]

Focused Reviews

Research and Development of Highly Stable Magnetic Field Coil System for REBCO High-temperature Superconducting Model Magnet Used in MRI

Shoichi YOKOYAMA, Tetsuya MATSUDA, Ryo EGUCHI, Tatsuya INOUE, Hajime TANABE, Akihiro DAIKOKU, Daisuke MIYAGI, Makoto TSUDA, Taketsune NAKAMURA, Yasuyuki SHIRAI

Released: August 04, 2017

p.217-223

Superconducting magnets are effective for obtaining a highly stable, strong magnetic field for magnetic resonance imaging (MRI). Current MRI superconducting magnets require cooling in liquid helium at 4.2 K in order to use NbTi superconducting wire. The development of a high-temperature superconducting (HTS) coil that can be used without liquid helium cooling is greatly desired. In order to develop liquid helium-free MRI magnets using a high-temperature superconductor, the author has prototyped a model magnet that is able to generate extremely uniform, highly stable magnetic fields. This particular development includes such subjects as developing a coil structure where the superconducting characteristics do not deteriorate, working on a method of producing precision coils, designing coils that generate extremely uniform magnetic fields, and having high-temperature superconducting coils generate highly stable magnetic fields. MR imaging was carried out to verify the uniformity and stability of the magnetic fields.

Research and Development of a High-field Coil System
– Development of a high-temperature superconducting magnet for ultrahigh-field MRI –

Hiroshi MIYAZAKI, Sadanori IWAI, Taizo TOSAKA, Shunji NOMURA, Tsutomu KURUSU, Hiroshi UEDA, So NOGUCHI, Atsushi ISHIYAMA, Shinichi URAYAMA, Hidenao FUKUYAMA

Released: August 04, 2017

p.224-233

A project for developing of RE₁Ba₂Cu₃O_7-δ (REBCO) magnets to be utilized in ultrahigh-field magnetic resonance imaging (MRI) was started in 2013. Our final targets are 9.4 T MRI systems for whole-body and brain imaging. In this project, two different development approaches towards the final target were planned. One is a small REBCO coil that can generate 10 Tclass magnetic fields, which is the same level as the target magnetic field. The other is a conduction-cooled 1.5 T REBCO MRI magnet that has a room-temperature bore of 396 mm, which is as large as those of mid-sized model magnets. These results were reflected in the design of a conduction-cooled 9.4 T REBCO magnet for whole-body MRI systems.

Research and Development of the Coil System for a Beam Transport and Irradiation Line
– Development for high-temperature superconducting rotating gantry –

Shigeki TAKAYAMA, Kei KOYANAGI, Tomofumi ORIKASA, Yusuke ISHII, Tsutomu KURUSU, Yoshiyuki IWATA, Koji NODA, Kento SUZUKI, Toru OGITSU, Yusuke SOGABE, Naoyuki AMEMIYA

Released: August 04, 2017

p.234-243

Volume And Issue List TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)

TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Vol. 52(2017) No. 4

Preface

[title in Japanese]

Feature

Feature: “Development of Fundamental Technologies for HTS Coils” and “Development of Medical Devicand Systems for Advanced Medical Services”

Focused Reviews

Research and Development of Highly Stable Magnetic Field Coil System for REBCO High-temperature Superconducting Model Magnet Used in MRI

Research and Development of a High-field Coil System – Development of a high-temperature superconducting magnet for ultrahigh-field MRI –

Research and Development of the Coil System for a Beam Transport and Irradiation Line – Development for high-temperature superconducting rotating gantry –

Volume And Issue List
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)

Research and Development of a High-field Coil System
– Development of a high-temperature superconducting magnet for ultrahigh-field MRI –

Research and Development of the Coil System for a Beam Transport and Irradiation Line
– Development for high-temperature superconducting rotating gantry –