CN102805639B - Method for controlling medical device, facility with the medical device - Google Patents
Method for controlling medical device, facility with the medical device Download PDFInfo
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- CN102805639B CN102805639B CN201210176535.5A CN201210176535A CN102805639B CN 102805639 B CN102805639 B CN 102805639B CN 201210176535 A CN201210176535 A CN 201210176535A CN 102805639 B CN102805639 B CN 102805639B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7253—Details of waveform analysis characterised by using transforms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1107—Measuring contraction of parts of the body, e.g. organ, muscle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
- A61B5/7285—Specific aspects of physiological measurement analysis for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
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- 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
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6822—Neck
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/541—Control of apparatus or devices for radiation diagnosis involving acquisition triggered by a physiological signal
Abstract
The invention relates to a method for controlling a medical device (1, 31) of a facility (1, 14, 21, 31). The facility comprises a fixing device (20) attached to a chest of a patient (P), where the fixing device is comprised of an electromechanical sensor (21); a signal evaluation device (14) which is fed with measuring signals generated by an electro mechanical sensor for evaluation; and a medical device connected to the signal evaluation device, wherein, in the fixing device attached to the chest of the patient, the measuring signals of the cardiac activity of the patient are recorded by the electro mechanical sensor, trigger signals related to the cardiac cycle of the patient are generated with the signal evaluation device based on the measuring signals, and the operation of the medical device is controlled based on the trigger signals. The invention further relates to a facility with the medical device and a computing device for implementing the method, and further relates to a data carrier (16) with a computer program (15) for implementing the method.
Description
Technical field
The present invention relates to a kind of method for controlling the Medical Equipment of facility, being particularly useful for producing and the image of the patient tissue of motion movable due to patient's heart and/or for and the radiotherapy of the patient tissue of motion movable due to patient's heart without motion artifacts as far as possible.The invention still further relates to a kind of facility, it has Medical Equipment and has the accountant for implementing the method.
Background technology
When using imaging device (such as use X ray computer fault angiography device) to check patient tissue, mostly organize or the X-ray camera system feeding of patient relative to X ray computer fault angiography device time take the projection of multiple two-dimensional x-ray from the different projecting directions of tissue.The object checked is, produce relative high quality and more virtuous tissue image based on two-dimensional x-ray projection, this image forms the basis of medical diagnosis usually.
If checked the tissue in patient upper body area, then also should consider the histokinesis caused due to patient's heart activity when producing tissue image, the high-quality tissue image without motion artifacts can be obtained.
Thus, such as always make every effort to when heart self carries out imaging as examine tissue: to tomographic image and based on captured heart two-dimensional x-ray projection realize 3-D view rebuild time, only use such two-dimensional x-ray projection, it is taken in the following heart phase (Herzphase) of patient's cardiac cycle: in fact do not move in this heart phase cardiac, thus avoids the motion artifacts in the mentioned tomographic image at the heart rebuild and 3-D view.In order to determine the cardiac cycle of patient's heart, usually record the electrocardiogram (EKG) of patient's heart at this.
In order to produce tomographic image and the 3-D view of heart, usually in multiple cardiac cycle, when parallel recording ecg, the two-dimensional x-ray of acquiring cardiac projects, and only select the two-dimensional x-ray projection being suitable for rebuilding subsequently based on electrocardiogram, for this reason also referred to as backtracking (retrospektiven) method.
Replace method in, similarly obtain in multiple cardiac cycle heart two-dimensional x-ray projection, but, be based on and line item electrocardiogram only heart be in a heart in fact do not carry out the heart phase of moving time.The advantage of the method is, patient is placed in the X-radiation of smaller dose.
If patient has low and the heart beating of rule or rule cardiac cycle, such as lower than 60bpm (beats per minute, number of beating per minute), then can identify relatively short, around about 60% position at RR interval time range by the RR interval analyzed in EKG, wherein such as in the projection of each cardiac cycle shooting two-dimensional x-ray.Also specify to be called so-called " Pulsing-Windows, pulsation window " at this, namely wherein apply the time window of X-radiation.At this, the quiescent phase of heart has maximum of probability mostly.If this hypothesis is correct, then apply the X-radiation of low dosage to patient for obtaining two-dimensional x-ray projection from different projecting directions, this low dosage is required for the reconstruction of cardiac image.Reach high picture quality simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of method of the described type of beginning, a kind of facility and a kind of data medium, makes it possible to the operation controlling Medical Equipment in an alternative manner.
According to the present invention, above-mentioned technical problem is solved by the method for controlling the Medical Equipment of facility, described facility has the fixture (it has at least one pickoff) for being arranged on patient chest, signal analysis device (transmitting the measuring-signal that produced by least one pickoff for analyzing to it), and the Medical Equipment to be connected with signal analysis device, wherein in the fixture of patient chest installation, utilize at least one pickoff to receive the measuring-signal about patient's heart activity, signal analysis device is utilized to produce the triggering signal about patient's cardiac cycle based on measuring-signal, and the operation of Medical Equipment is wherein controlled based on triggering signal.
The present invention is based on following consideration, namely use ekg electrode normally troublesome and be uncomfortable for patient.At least must just prepare, at chest region, ekg electrode is installed after partly removing hair for male patient thus.In order to ekg electrode is arranged on skin, mostly need to use adhesive.In addition, there is the certain dependence of EKG signal about each self-impedance of patient skin when using ekg electrode.
Therefore advise: give up ekg electrode, and replace installation or wherein at least one pickoff integrated on the securing means, this fixture can be arranged on patient chest place in a straightforward manner.Utilize the pickoff of fixture, move because extruding (Druck ü bung) pickoff can record the chest caused due to cardiomotility and can produce corresponding measuring-signal, this measuring-signal relates to, characterizes or indicates patient's heart movable.Finally, the triggering signal derived from measuring-signal is utilized can to control or affect the operation of Medical Equipment.
According to a modification of this invention, by signal analysis device by Fourier analysis and/or wavelet analysis the measuring-signal at least one pickoff analyze, thus produce the triggering signal about patient's cardiac cycle.Especially, identify and comprise the measuring-signal of its signal energy or the component of signal of measuring-signal, the frequency of this signal is positioned within the frequency bandwidth (beating for 60 to 140 times approximately per minute) that adapts with human heart.Target gathers the patient's cardiac cycle comprising QRS complex (QRS-Komplex) in high quality, thus can derive suitable triggering signal to control Medical Equipment.
In one embodiment of the invention, Medical Equipment is imaging medical devices, wherein based on triggering signal utilize imaging medical devices receive patient especially in the image information of the image information of chest region, particularly patient's heart.
According to another embodiment of the invention, Medical Equipment is radiotherapy equipment, wherein controls the radiotherapy to patient tissue based on triggering signal.
The technical problem to be solved in the present invention is also solved by a kind of facility, described facility have for be arranged on patient chest place and have at least one pickoff fixture, the measuring-signal that utilize at least one pickoff to produce can be transmitted for signal analysis device, the Medical Equipment be connected with signal analysis device of analysis and contain the accountant of the calculation procedure realizing above-described method to it.
According to one distortion of the present invention, fixture is implemented as the band being arranged on patient chest place.Such band is normally elastic, to guarantee the good contact of pickoff and body surface.
According to another kind distortion of the present invention, at least one pickoff of fixture is piezoelectric transducer or EMFi sensor (Elektromechanischer Film-Sensor, dynamo-electric thin film sensor).
Medical Equipment can be computer tomograph, C-arm X-ray equipment, PET equipment, SPECT equipment, magnetic resonance equipment or radiotherapy equipment.
In addition, the technical problem to be solved in the present invention is solved by a kind of data medium, and this data medium has the calculation procedure realizing above-described method.
Accompanying drawing explanation
Embodiments of the invention are described in appended schematic diagram.In accompanying drawing:
Fig. 1 shows the Medical Equipment with computer tomograph form, and
Fig. 2 shows the Medical Equipment with radiotherapy equipment form.
The parts that identical or function is identical in the accompanying drawings all come with identical Reference numeral.Description in accompanying drawing is schematic and is not that pressure is proportional.In case of the present embodiment, Medical Equipment is computer tomograph and radiotherapy equipment, and it is following and only essential to the inventionly to discuss as understanding without loss of generality.
Detailed description of the invention
Computer tomograph 1 shown in Figure 1 comprises frame 2, this frame have stationary part 3 and schematically show, the part 4 that can rotate around system axle 5, this rotatable portion 4 is rotatably settled relative to stationary part 3 by the support do not illustrated in FIG.Rotatable portion 4 has x-ray system when embodiments of the invention, and this x-ray system comprises x-ray source 6 and X-ray detector 7, and they are arranged in rotatable portion 4 relative to one another.When computer tomograph 1 runs, the direction of X-radiation 8 from x-ray source 6s at X-ray detector 7 is penetrated, and is gathered with the form of detector measurement data or detector measurement signal through measurement target by X-ray detector 7.
In addition, computer tomograph 1 has the patient table 9 for placing examine patient.Patient table 9 comprises bed pedestal 10, arranges the patient support plate 11 arranged for real patient P thereon.Patient support plate 11 can adjust by motor on the direction of system axle 5 like this relative to bed pedestal 10 with driving, that is, project for use in taking two-dimensional x-ray to patient P (such as according to helical scanning) in the opening 12 that patient support plate 11 sails frame 2 into together with patient P.
Based on detector measurement data or the detector measurement signal of two-dimensional x-ray projection, utilize the image computer 13 schematically shown of computer tomograph 1 to carry out computational analysis to the two-dimensional x-ray projection utilizing x-ray system to take, or tomographic image, 3-D view or three-dimensional data group are rebuild.
In addition, computer tomograph 1 has accountant 14, can perform for operating the calculation procedure with computer for controlling fault angiography device 1 by this accountant 14.At this, accountant 14 need not be constructed to independent accountant 14, but also can be integrated in computer tomograph 1.
When embodiments of the invention, be loaded with calculation procedure 15 in accountant 14, this calculation procedure realizes the method for computer for controlling fault angiography device 1 according to invention.Calculation procedure 15 describes the special operational mode of computer tomograph 1, and can be loaded into accountant 14 from server 17 (it can be the internal network of public network or clinic or hospital) from portable data medium (such as from CD16 or from memory stick) or also by network 18.
The patient P be placed on patient support plate 11 has the fixture of band 20 form when embodiments of the invention, this band is applied to patient P at patient chest place.Have current with the pickoff 20 of piezoelectric transducer 21 form with 20, this piezoelectric transducer is integrated in band 20.Replace, pickoff also can be EMFi sensor.Should be noted that when band 20 is applied to chest: piezoelectric transducer 21 is positioned at the top of patient P heart.Band 20 is made up of elastomeric material, to guarantee on body surface that band is positioned at patient P well and to thus ensure that piezoelectric transducer 21 is coupled on the body surface of patient P well.The motion of the chest caused by the cardiomotility of patient P correspondingly can apply dynamic pressure on piezoelectric transducer 21, and the cardiomotility of patient P heart is produced by this piezoelectric transducer and characterizes or relevant measuring-signal thus.
The measuring-signal produced by piezoelectric transducer 21 is transferred to signal analysis device or accountant.When embodiments of the invention, accountant 14 forms signal analysis device.
Accountant 14 is analyzed the measuring-signal obtained by piezoelectric transducer 21, wherein, this accountant 14 pairs of measuring-signals carry out Fourier analysis and/or wavelet analysis, thus identify such measuring-signal or the component of signal of measuring-signal, that is, they have signal energy typical cardiomotility and the frequency of frequency bandwidth being positioned at adapt with human heart (beating for about 60 to 140 times per minute).
Determine that patient's heart is movable based on the analysis carried out the measuring-signal of piezoelectric transducer 21 or the component of signal of measuring-signal.Ideally, the cardiac cycle of patient is determined, thus can based on determined cardiac cycle generation for determining the trigger impulse starting " pulsation window (Pulsing-Windows) " mentioned.The shooting that the X-ray of the chest region (especially heart) of such as patient P projects can be controlled in this way, that is " pulsation window (Pulsing-Windows " only determined by trigger impulse) period takes X-ray projection, and wherein in fact the heart of patient P does not move.
Distinguish triggering signal that is determined or regulation, both can be applied to when considering computer tomograph 1 the expected image producing method described, wherein only when the trunk of patient P does not carry out the motion caused by cardiomotility as much as possible, X-ray projection having been taken; The image producing method of backtracking can be applied to again, wherein after the projection of shooting X-ray, choose such X-ray projection for image reconstruction based on triggering signal, that is, the stage that it does not exist the patient P trunk motion caused by cardiomotility is as far as possible taken.
In addition, imaging medical devices also can be C-arm X-ray equipment, PET equipment, SPECT equipment or magnetic resonance equipment.
At this, computer tomograph 1 is not only used to imaging, be also used to planning operation or for plan radiation therapy, the motion of the tissue to be treated of patient is such as associated with the heart phase of patient P.
In addition, Medical Equipment also can be radiotherapy equipment.Fig. 2 very schematically show such radiotherapy equipment 31, this radiotherapy equipment comprises the frame 32 having stationary part 33 and have the part 34 that can rotate around system axle 35 schematically shown, this rotatable portion 34 can be supported relative to stationary part 33 rotatably by unshowned support in fig. 2.The x-ray source 36 that rotatable portion 34 has treatment and the X-ray detector 37 for MeV imaging arranged in contrast.Other assemblies (such as patient table 9 etc.) of radiotherapy equipment 31 correspond essentially to the assembly of computer tomograph 1, and therefore they have identical Reference numeral.The x-ray source 36 for the treatment of is for being applied to the tissue to be treated of patient P with the X-radiation for the treatment of, this X-radiation has the photon energy within the scope of MeV.
When radiotherapy equipment, use the measuring-signal based on the piezoelectric transducer 21 of band 20 and the triggering signal that produces, to be only just applied to the tissue to be treated of patient P when there is not the motion of the tissue to be treated caused by patient P cardiomotility as far as possible and/or when tissue to be treated is positioned at specific treatment position with the X-radiation for the treatment of, thus make not apply non-tissue to be treated with X-radiation as much as possible.
Be different from described embodiments of the invention, band also can have multiple pickoff, analyzes its signal as described, to gather patient's heart activity.
Claims (8)
1. one kind for medical facilities (1,14,21,31) Medical Equipment (1,31) method controlled is carried out, described medical facilities has: for being arranged on the fixture (20) at patient (P) chest place, this fixture has at least one pickoff (21); Signal analysis device (14), the measuring-signal that described in utilizing to the conveying of this signal analysis device, at least one pickoff (21) produces is for analyzing; And Medical Equipment (1,31), this Medical Equipment is connected with described signal analysis device (14), wherein,
-in the fixture (20) of the chest place of patient (P) installation, utilize described at least one pickoff (21) reception about the measuring-signal of this patient (P) cardiomotility,
-utilize described signal analysis device (14), the cardiac cycle of this patient (P) is determined based on described measuring-signal, thus be used for based on this determined cardiac cycle generation the triggering signal determining " pulsation window " that the heart of wherein this patient (P) does not in fact move, and
-wherein, the operation of described Medical Equipment (1,31) is controlled based on described triggering signal.
2. method according to claim 1, wherein, by Fourier analysis and/or wavelet analysis, described measuring-signal is analyzed by described signal analysis device (14), thus produce the triggering signal about the cardiac cycle of described patient (P).
3. method according to claim 1 and 2, wherein, described Medical Equipment is imaging medical devices (1), wherein, utilizes described imaging medical devices (1) to receive the image information of described patient (P) based on described triggering signal.
4. method according to claim 1 and 2, wherein, described Medical Equipment is radiotherapy equipment (31), wherein, controls based on the radiotherapy of described triggering signal to the tissue of described patient (P).
5. a medical facilities, it has: for being arranged on the fixture (20) at patient (P) chest place, this fixture has at least one pickoff (21); Signal analysis device (14), can carry the measuring-signal produced by least one pickoff (21) for analyzing to this signal analysis device; The Medical Equipment (1,31) be connected with described signal analysis device (14); And accountant (14), it can realize method according to any one of claim 1 to 4.
6. medical facilities according to claim 5, wherein, described fixture is mounted in the band (20) at chest place.
7. the medical facilities according to claim 5 or 6, wherein, at least one pickoff described is piezoelectric transducer (21) or EMFi sensor.
8. the medical facilities according to claim 5 or 6, wherein, described Medical Equipment is computer tomograph (1), C-arm X-ray equipment, PET equipment, SPECT equipment, magnetic resonance equipment or radiotherapy equipment (31).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011076882.3 | 2011-06-01 | ||
| DE102011076882.3A DE102011076882B4 (en) | 2011-06-01 | 2011-06-01 | Method for controlling a medical device, device with a medical device and data carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102805639A CN102805639A (en) | 2012-12-05 |
| CN102805639B true CN102805639B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210176535.5A Active CN102805639B (en) | 2011-06-01 | 2012-05-31 | Method for controlling medical device, facility with the medical device |
Country Status (2)
| Country | Link |
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| CN (1) | CN102805639B (en) |
| DE (1) | DE102011076882B4 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014205828B4 (en) * | 2014-03-28 | 2023-03-30 | Siemens Healthcare Gmbh | Method for determining the time of heart movement and for triggering an imaging system and corresponding device |
| DE102018215415A1 (en) * | 2018-09-11 | 2020-03-12 | Siemens Healthcare Gmbh | Monitoring a breathing curve |
| CN109350095A (en) * | 2018-12-08 | 2019-02-19 | 余姚德诚科技咨询有限公司 | Self-adapting type rabat imager |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102006011255A1 (en) * | 2006-03-10 | 2007-09-13 | Siemens Ag | Multimodal image-guided medical examination device, has common control device provided for controlling operation of X-ray device and catheter-lateral image recording device and operating device e.g. cutter |
| CN101316552A (en) * | 2005-11-30 | 2008-12-03 | 皇家飞利浦电子股份有限公司 | Radar system for remotely measuring a subject's heartrate |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT160573B (en) * | 1941-08-11 | Baltfried Ing Pichler | Method and device for the production of X-ray images of body organs. | |
| DE160573C (en) | 1900-01-01 | |||
| CA1101936A (en) | 1977-04-01 | 1981-05-26 | Robert H. Wake | Cardiac imaging with ct scanner |
| DE4210122C1 (en) | 1992-03-27 | 1993-04-29 | Siemens Ag, 8000 Muenchen, De | Medical diagnostic X=ray equipment - has sensor detecting speed of movement of organ, e.g. heart, and output signal being used to change duration of separate pulses of pulsed radiation automatically |
| US6640126B2 (en) * | 2001-02-26 | 2003-10-28 | Toshiba America Mri, Inc. | Acoustic gating monitor for magnetic resonance imaging system |
| DE102005059210B4 (en) | 2005-12-12 | 2008-03-20 | Siemens Ag | Radiotherapeutic device |
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2011
- 2011-06-01 DE DE102011076882.3A patent/DE102011076882B4/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316552A (en) * | 2005-11-30 | 2008-12-03 | 皇家飞利浦电子股份有限公司 | Radar system for remotely measuring a subject's heartrate |
| DE102006011255A1 (en) * | 2006-03-10 | 2007-09-13 | Siemens Ag | Multimodal image-guided medical examination device, has common control device provided for controlling operation of X-ray device and catheter-lateral image recording device and operating device e.g. cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011076882A1 (en) | 2012-12-06 |
| DE102011076882B4 (en) | 2018-12-20 |
| CN102805639A (en) | 2012-12-05 |
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Effective date of registration: 20220208 Address after: Erlangen Patentee after: Siemens Healthineers AG Address before: Munich, Germany Patentee before: SIEMENS AG |