Title:
磁気共鳴映像のジオメトリ乱れの補正方法
Document Type and Number:
Japanese Patent JP2006521857
Kind Code:
A
Abstract:
A method and apparatus to concurrently acquire two sets of image data during the same image data acquisition interval in which the magnetic field (2) associated with acquisition of the first data set is caused to differ from the magnetic field (3) associated with acquisition of the second data set. A repeated change of the magnetic field in a pre-determined manner is done during the continuous acquisition of image data comprising the two sets. The relationship between the differing magnetic fields, most preferably the relationship between differing gradient fields, may then be employed in conjunction with the first and second data sets to correct image distortions arising in images constructed according to the data in either set alone.
Inventors:
Martin Osmund Reach
Stephan Alexander Rainsburg
Elizabeth May More
Stephan Alexander Rainsburg
Elizabeth May More
Application Number:
JP2006506085A
Publication Date:
September 28, 2006
Filing Date:
April 02, 2004
Export Citation:
Assignee:
The Institute of Cancer Research: Royal Cancer Hospital
The Royal Marsden NAS Foundation Trust
The Royal Marsden NAS Foundation Trust
International Classes:
A61B5/055; G01R33/54; G01R33/565; G01R33/56
Foreign References:
| US5099208A | 1992-03-24 | |||
| US5099208A | 1992-03-24 |
Other References:
JPN6010011825, Ｓｈａｎ Ｄｏｎｇ, "”ＲＥＣＴＩＦＩＣＡＴＩＯＮ ＯＦ ＤＩＳＴＯＲＴＩＯＮ ＩＮ ＭＲＩ ＦＯＲ ＳＴＥＲＥＯＴＡＸＹ”", Ｃｏｍｐｕｔｅｒ−Ｂａｓｅｄ Ｍｅｄｉｃａｌ Ｓｙｓｔｅｍｓ， １９９２． Ｐｒｏｃｅｅｄｉｎｇｓ．， Ｆｉｆｔｈ Ａｎｎｕａｌ ＩＥＥＥ Ｓｙｍｐｏｓｉｕｍ ｏｎ, 19920117, Ｐ．１８１−１８９
JPN5006004092, ＨＡＡＣＫＥ ＥＭ, ＭＡＧＮＥＴＩＣ ＲＥＳＯＮＡＮＣＥ ＩＭＡＧＩＮＧ − ＰＨＹＳＩＣＡＬ ＰＲＩＮＣＩＰＬＥＳ ＡＮＤ ＳＥＱＵＥＮＣＥ ＤＥＳＩＧＮ, 1999, Ｐ８０３−８０４, US, ＪＯＨＮ ＷＩＬＥＹ ＆ ＳＯＮＳ， ＩＮＣ．
JPN6010011829, Ｓ．Ａ．Ｒ．Ｋａｎｎｅｎｇｉｅβｅｒ，Ｙ．Ｗａｎｇ，Ｅ．Ｍ．Ｈａａｃｋｅ, "”Ｇｅｏｍｅｔｒｉｃ Ｄｉｓｔｏｒｔｉｏｎ Ｃｏｒｒｅｃｔｉｏｎ ｏｆ Ｇｒａｄｉｅｎｔ Ｅｃｈｏ Ｉｍａｇｅｓ Ｕｓｉｎｇ Ｄｙｎａｍｉｃ Ｔｉｍｅ Ｗａｒｐｉｎｇ”", Ｐｒｏｃｅｅｄｉｎｇｓ ｏｆ ｔｈｅ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｓｏｃｉｅｔｙ ｆｏｒ Ｍａｇｎｅｔｉｃ Ｒｅｓｏｎａｎｃｅ ｉｎ Ｍｅｄｉｃｉｎｅ, 19980424, ＃５７３
JPN6010011833, Ｈｓｕａｎ Ｃｈａｎｇ, "”Ａ ｔｅｃｈｎｉｑｕｅ ｆｏｒ ａｃｃｕｒａｔｅ ｍａｇｎｅｔｉｃ ｒｅｓｏｎａｎｃｅ ｉｍａｇｉｎｇ ｉｎ ｔｈｅ ｐｒｅｓｅｎｃｅ ｏｆ ｆｉｅｌｄ ｉｎｈｏｍｏｇｅｎｅｉｔｉｅｓ”", ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ ｍｅｄｉｃａｌ ｉｍａｇｉｎｇ, 199209, Ｖｏｌ．１１，Ｎｏ．３, ｐ．３１９−３２９, US
JPN5006004092, ＨＡＡＣＫＥ ＥＭ, ＭＡＧＮＥＴＩＣ ＲＥＳＯＮＡＮＣＥ ＩＭＡＧＩＮＧ − ＰＨＹＳＩＣＡＬ ＰＲＩＮＣＩＰＬＥＳ ＡＮＤ ＳＥＱＵＥＮＣＥ ＤＥＳＩＧＮ, 1999, Ｐ８０３−８０４, US, ＪＯＨＮ ＷＩＬＥＹ ＆ ＳＯＮＳ， ＩＮＣ．
JPN6010011829, Ｓ．Ａ．Ｒ．Ｋａｎｎｅｎｇｉｅβｅｒ，Ｙ．Ｗａｎｇ，Ｅ．Ｍ．Ｈａａｃｋｅ, "”Ｇｅｏｍｅｔｒｉｃ Ｄｉｓｔｏｒｔｉｏｎ Ｃｏｒｒｅｃｔｉｏｎ ｏｆ Ｇｒａｄｉｅｎｔ Ｅｃｈｏ Ｉｍａｇｅｓ Ｕｓｉｎｇ Ｄｙｎａｍｉｃ Ｔｉｍｅ Ｗａｒｐｉｎｇ”", Ｐｒｏｃｅｅｄｉｎｇｓ ｏｆ ｔｈｅ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｓｏｃｉｅｔｙ ｆｏｒ Ｍａｇｎｅｔｉｃ Ｒｅｓｏｎａｎｃｅ ｉｎ Ｍｅｄｉｃｉｎｅ, 19980424, ＃５７３
JPN6010011833, Ｈｓｕａｎ Ｃｈａｎｇ, "”Ａ ｔｅｃｈｎｉｑｕｅ ｆｏｒ ａｃｃｕｒａｔｅ ｍａｇｎｅｔｉｃ ｒｅｓｏｎａｎｃｅ ｉｍａｇｉｎｇ ｉｎ ｔｈｅ ｐｒｅｓｅｎｃｅ ｏｆ ｆｉｅｌｄ ｉｎｈｏｍｏｇｅｎｅｉｔｉｅｓ”", ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ ｍｅｄｉｃａｌ ｉｍａｇｉｎｇ, 199209, Ｖｏｌ．１１，Ｎｏ．３, ｐ．３１９−３２９, US
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro