JP7034628B2 - X線高電圧装置及びx線画像診断装置 - Google Patents
X線高電圧装置及びx線画像診断装置 Download PDFInfo
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- JP7034628B2 JP7034628B2 JP2017159765A JP2017159765A JP7034628B2 JP 7034628 B2 JP7034628 B2 JP 7034628B2 JP 2017159765 A JP2017159765 A JP 2017159765A JP 2017159765 A JP2017159765 A JP 2017159765A JP 7034628 B2 JP7034628 B2 JP 7034628B2
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- 238000002059 diagnostic imaging Methods 0.000 title claims 2
- 239000003990 capacitor Substances 0.000 description 145
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 230000001678 irradiating effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 150000002739 metals Chemical group 0.000 description 1
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- 230000003071 parasitic effect Effects 0.000 description 1
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/083—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the ignition at the zero crossing of the voltage or the current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33573—Full-bridge at primary side of an isolation transformer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/06—Diaphragms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4035—Arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/01—Resonant DC/DC converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Power Engineering (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Computer Networks & Wireless Communication (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- X-Ray Techniques (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Description
図1を参照しながら、第1の実施形態に係るX線CT装置1の構成について説明する。図1は、第1の実施形態に係るX線CT装置1の構成の一例を示すブロック図である。X線CT装置1は、図1に示すように、架台装置2と、寝台装置20と、コンソール装置30とを有する。なお、X線CT装置1の構成は、下記の構成に限定されるものではない。
さて、これまで第1の実施形態について説明したが、上述した第1の実施形態以外にも、種々の異なる形態にて実施されてよいものである。
34 処理回路
341 スキャン制御機能
342 画像生成機能
343 表示制御機能
344 制御機能
6 X線高電圧装置
603 インバータ回路
604 取得回路
605 制御回路
Claims (4)
- 複数のスイッチング素子を含むインバータ回路と、
前記インバータ回路に流れるインバータ電流の値であって、電流計が示すインバータ電流値を取得する取得部と、
前記インバータ電流値に基づいて、前記インバータ電流が略0になる第1のタイミングを特定することができた場合には、当該第1のタイミングで前記スイッチング素子に対してゼロ電流スイッチング制御を実行し、前記第1のタイミングを特定することができなかった場合には、当該第1のタイミングを除く第2のタイミングで前記スイッチング素子に対してゼロ電圧スイッチング制御を実行するように制御する制御部と、
を備える、X線高電圧装置。 - 前記制御部は、前記第1のタイミングとして、浮遊容量により共振する前記インバータ電流が略0になるタイミングを特定する、請求項1に記載のX線高電圧装置。
- 前記制御部は、X線管によるX線の出力中に出力電流を変調する制御において、前記ゼロ電流スイッチング制御又は前記ゼロ電圧スイッチング制御を実行するように制御する、請求項1又は2に記載のX線高電圧装置。
- 高電圧を供給するX線高電圧装置と、
供給された高電圧を用いてX線を発生するX線管と、
前記X線管から照射されたX線を検出し、検出したX線量に応じた信号を出力するX線検出器と、
前記信号に基づいて医用画像を生成する画像生成部と、を備え、
前記X線高電圧装置は、
複数のスイッチング素子を含むインバータ回路と、
前記インバータ回路に流れるインバータ電流の値であって、電流計が示すインバータ電流値を取得する取得部と、
前記インバータ電流値に基づいて、前記インバータ電流が略0になる第1のタイミングを特定することができた場合には、当該第1のタイミングで前記スイッチング素子に対してゼロ電流スイッチング制御を実行し、前記第1のタイミングを特定することができなかった場合には、当該第1のタイミングを除く第2のタイミングで前記スイッチング素子に対してゼロ電圧スイッチング制御を実行するように制御する制御部と、
を備える、X線画像診断装置。
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JP2017159765A JP7034628B2 (ja) | 2017-08-22 | 2017-08-22 | X線高電圧装置及びx線画像診断装置 |
US16/107,134 US10722206B2 (en) | 2017-08-22 | 2018-08-21 | X-ray high voltage device and X-ray image diagnosis apparatus |
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JP2017159765A JP7034628B2 (ja) | 2017-08-22 | 2017-08-22 | X線高電圧装置及びx線画像診断装置 |
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JP2019040680A JP2019040680A (ja) | 2019-03-14 |
JP7034628B2 true JP7034628B2 (ja) | 2022-03-14 |
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US (1) | US10722206B2 (ja) |
JP (1) | JP7034628B2 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20020131555A1 (en) | 2001-03-15 | 2002-09-19 | Ray Fleming | Apparatus for producing vacuum arc discharges |
WO2010053108A1 (ja) | 2008-11-05 | 2010-05-14 | 株式会社 日立メディコ | 位相シフト型インバータ回路、それを用いたx線高電圧装置、x線ct装置、および、x線撮影装置 |
Family Cites Families (14)
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US5717584A (en) * | 1995-12-08 | 1998-02-10 | General Motors Corporation | Quasi-resonant pole inverter |
JP3141925B2 (ja) | 1996-08-30 | 2001-03-07 | サンケン電気株式会社 | ブリッジ型インバ−タ装置 |
US6388397B1 (en) * | 2000-04-20 | 2002-05-14 | Matsushita Electric Works, Ltd. | Discharge lamp lighting device |
JP2004072893A (ja) | 2002-08-06 | 2004-03-04 | Fuji Electric Holdings Co Ltd | 昇圧チョッパ回路 |
JP4636249B2 (ja) | 2005-07-19 | 2011-02-23 | ミツミ電機株式会社 | 電流共振型dc/dcコンバータおよびそのゼロ電流スイッチング実現方法 |
JP2009017749A (ja) | 2007-07-09 | 2009-01-22 | Fujitsu Ten Ltd | 電源回路、電源制御装置、及び、電源装置 |
JP5667766B2 (ja) | 2010-01-04 | 2015-02-12 | オリジン電気株式会社 | 直流高電圧発生装置 |
US8520413B2 (en) * | 2011-08-17 | 2013-08-27 | Mks Instruments, Inc. | Adjustable resonant buck converter |
WO2013134573A1 (en) * | 2012-03-08 | 2013-09-12 | Massachusetts Institute Of Technology | Resonant power converters using impedance control networks and related techniques |
US9806637B2 (en) * | 2013-04-30 | 2017-10-31 | Futurewei Technologies, Inc. | Soft switching inverter device and method |
US9985516B2 (en) * | 2014-02-12 | 2018-05-29 | Palo Alto Research Center Incorporated | DC/DC converter and method for zero voltage switching |
US9362846B2 (en) * | 2014-02-25 | 2016-06-07 | Futurewei Technologies, Inc. | Soft switching inverter with auxiliary switch facilitating zero voltage switching |
JP6149884B2 (ja) * | 2014-08-28 | 2017-06-21 | 株式会社デンソー | 電圧コンバータ制御装置 |
KR102344534B1 (ko) * | 2014-11-11 | 2021-12-29 | 엘지이노텍 주식회사 | 전력변환부 |
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- 2017-08-22 JP JP2017159765A patent/JP7034628B2/ja active Active
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- 2018-08-21 US US16/107,134 patent/US10722206B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020131555A1 (en) | 2001-03-15 | 2002-09-19 | Ray Fleming | Apparatus for producing vacuum arc discharges |
WO2010053108A1 (ja) | 2008-11-05 | 2010-05-14 | 株式会社 日立メディコ | 位相シフト型インバータ回路、それを用いたx線高電圧装置、x線ct装置、および、x線撮影装置 |
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US10722206B2 (en) | 2020-07-28 |
US20190059844A1 (en) | 2019-02-28 |
JP2019040680A (ja) | 2019-03-14 |
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