JP4542897B2 - 磁性粒子による局部加熱の方法 - Google Patents
磁性粒子による局部加熱の方法 Download PDFInfo
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- JP4542897B2 JP4542897B2 JP2004530470A JP2004530470A JP4542897B2 JP 4542897 B2 JP4542897 B2 JP 4542897B2 JP 2004530470 A JP2004530470 A JP 2004530470A JP 2004530470 A JP2004530470 A JP 2004530470A JP 4542897 B2 JP4542897 B2 JP 4542897B2
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- 239000006249 magnetic particle Substances 0.000 title claims description 33
- 238000010438 heat treatment Methods 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 30
- 230000005291 magnetic effect Effects 0.000 claims description 202
- 239000002245 particle Substances 0.000 claims description 106
- 230000008859 change Effects 0.000 claims description 31
- 230000005381 magnetic domain Effects 0.000 claims description 9
- 239000002902 ferrimagnetic material Substances 0.000 claims description 3
- 238000001246 colloidal dispersion Methods 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims description 2
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 230000005294 ferromagnetic effect Effects 0.000 claims 2
- 230000005293 ferrimagnetic effect Effects 0.000 claims 1
- 239000002120 nanofilm Substances 0.000 claims 1
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- 238000002679 ablation Methods 0.000 description 3
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- 239000000696 magnetic material Substances 0.000 description 3
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- 238000000015 thermotherapy Methods 0.000 description 3
- 206010020843 Hyperthermia Diseases 0.000 description 2
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- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
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- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/0515—Magnetic particle imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
- A61N1/403—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals for thermotherapy, e.g. hyperthermia
- A61N1/406—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals for thermotherapy, e.g. hyperthermia using implantable thermoseeds or injected particles for localized hyperthermia
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- Radiology & Medical Imaging (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Magnetic Treatment Devices (AREA)
- Electrotherapy Devices (AREA)
- Physical Vapour Deposition (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Description
a)前記目的領域において第1のサブ領域は弱い磁界強度、第2のサブ領域は強い磁界強度となるように、空間内で磁界強度の変化する磁界を発生させるステップと、
b)前記目的領域における前記第1及び第2のサブ領域の空間位置を十分に長く、前記目的領域が加熱されるような周波数で変化させるステップと、
を有する。
Claims (14)
- 目的領域にある磁性粒子の加熱用の磁界発生装置の作動方法であって、
a)前記目的領域において第1のサブ領域は弱い磁界強度、第2のサブ領域は強い磁界強度となるように、空間内で磁界強度の変化する磁界を発生させるステップと、
b)ある周波数で、前記目的領域が所定の温度に加熱されるのに必要な時間以上、前記目的領域における前記第1及び第2のサブ領域の空間位置を変化させるステップと、
を有する方法。 - 空間的及び時間的に変化する磁界が生じ、前記目的領域における前記第1及び第2のサブ領域の前記空間位置を変化させることを特徴とする請求項1に記載の方法。
- 請求項1に記載の方法における強磁性体又はフェリ磁性体の単一磁区粒子の利用。
- 請求項1に記載の方法における強磁性体又はフェリ磁性体の複磁区粒子の利用。
- μm域の寸法を有し、請求項4に記載の複磁区粒子として、前記寸法に比べて薄い強磁性軟質材の層を塗布した基材の利用。
- 請求項3又は4に記載の粒子のコロイド状分散における利用。
- 特定組織に濃化させるため分子膜によって被覆された粒子の請求項1に記載の方法における利用。
- 請求項1に記載の方法における粒子の利用であって、前記粒子のキューリー点は、所望の加熱後の前記目的領域の温度、又は前記目的領域における最大許容温度に一致することを特徴とする粒子の利用。
- 請求項1に記載の方法を実行するシステムであって、
a)前記目的領域において第1のサブ領域では弱い磁界強度、第2のサブ領域では強い磁界強度が生じるように、空間内で磁界強度の変化する磁界を発生させる手段と、
b)ある周波数で、前記目的領域が所定の温度に加熱されるのに必要な時間以上、前記目的領域における前記第1及び第2のサブ領域の空間位置を変化させる手段と、
を有するシステム。 - 前記磁界を発生させる手段は勾配磁界を生じさせる永久磁石配列を有し、磁界の向きは前記目的領域の前記第1のサブ領域とは反対であり、前記磁界はゼロ交差点を有することを特徴とする請求項9に記載のシステム。
- 前記磁界を発生させる手段は勾配磁界を生じさせる勾配コイルシステムを有し、磁界の向きは前記目的領域の前記第1のサブ領域内で反転され、前記第1のサブ領域はゼロ交差点を有することを特徴とする請求項9に記載のシステム。
- 前記勾配磁界に重畳され、時間変化する磁界を生じさせる手段を有し、前記目的領域における前記第1及び第2のサブ領域をシフトさせることを特徴とする請求項11に記載のシステム。
- 第1の磁界及び前記勾配磁界に重畳される少なくとも2の他の磁界を生じさせる手段を有し、前記第1の磁界は時間に対して急速に変化し、小さな振幅を有し、前記2の他の磁界は時間に対してゆっくり変化し、大きな振幅を有することを特徴とする請求項11に記載のシステム。
- 3磁界が前記目的領域において相互に垂直に伸びることを特徴とする請求項13に記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10238853A DE10238853A1 (de) | 2002-08-24 | 2002-08-24 | Verfahren zur lokalen Erwärmung mit magnetischen Partikeln |
PCT/IB2003/003716 WO2004018039A1 (en) | 2002-08-24 | 2003-08-15 | Method for local heating by means of magnetic particles |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005536270A JP2005536270A (ja) | 2005-12-02 |
JP4542897B2 true JP4542897B2 (ja) | 2010-09-15 |
Family
ID=31197318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004530470A Expired - Fee Related JP4542897B2 (ja) | 2002-08-24 | 2003-08-15 | 磁性粒子による局部加熱の方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7300452B2 (ja) |
EP (1) | EP1551506B1 (ja) |
JP (1) | JP4542897B2 (ja) |
CN (1) | CN100522286C (ja) |
AU (1) | AU2003255960A1 (ja) |
DE (1) | DE10238853A1 (ja) |
ES (1) | ES2443646T3 (ja) |
WO (1) | WO2004018039A1 (ja) |
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JP4583372B2 (ja) * | 2003-04-15 | 2010-11-17 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 検査領域内における非凝集状態の磁性粒子の空間的な分布の、改善された特定のための方法および装置 |
JP5010914B2 (ja) * | 2003-04-15 | 2012-08-29 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 磁性粒子の空間分布を決める方法及び磁性粒子を投与する組成物 |
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-
2002
- 2002-08-24 DE DE10238853A patent/DE10238853A1/de not_active Withdrawn
-
2003
- 2003-08-15 EP EP03792591.4A patent/EP1551506B1/en not_active Expired - Lifetime
- 2003-08-15 JP JP2004530470A patent/JP4542897B2/ja not_active Expired - Fee Related
- 2003-08-15 ES ES03792591.4T patent/ES2443646T3/es not_active Expired - Lifetime
- 2003-08-15 US US10/525,170 patent/US7300452B2/en not_active Expired - Lifetime
- 2003-08-15 AU AU2003255960A patent/AU2003255960A1/en not_active Abandoned
- 2003-08-15 WO PCT/IB2003/003716 patent/WO2004018039A1/en active Application Filing
- 2003-08-15 CN CNB038199890A patent/CN100522286C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1551506B1 (en) | 2013-12-25 |
EP1551506A1 (en) | 2005-07-13 |
AU2003255960A8 (en) | 2004-03-11 |
CN1678371A (zh) | 2005-10-05 |
ES2443646T3 (es) | 2014-02-20 |
AU2003255960A1 (en) | 2004-03-11 |
WO2004018039A1 (en) | 2004-03-04 |
DE10238853A1 (de) | 2004-03-04 |
CN100522286C (zh) | 2009-08-05 |
US20060009826A1 (en) | 2006-01-12 |
JP2005536270A (ja) | 2005-12-02 |
US7300452B2 (en) | 2007-11-27 |
WO2004018039A8 (en) | 2005-02-17 |
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