DE102015011062A1 - Particle image velocity measurement with plenoptic camera on transparent three-dimensional printed resin models of cerebral vascular systems with aneurysms for flow analysis as quality control of implants such as stents, coils and flow diverter - Google Patents
Particle image velocity measurement with plenoptic camera on transparent three-dimensional printed resin models of cerebral vascular systems with aneurysms for flow analysis as quality control of implants such as stents, coils and flow diverter Download PDFInfo
- Publication number
- DE102015011062A1 DE102015011062A1 DE102015011062.4A DE102015011062A DE102015011062A1 DE 102015011062 A1 DE102015011062 A1 DE 102015011062A1 DE 102015011062 A DE102015011062 A DE 102015011062A DE 102015011062 A1 DE102015011062 A1 DE 102015011062A1
- Authority
- DE
- Germany
- Prior art keywords
- flow
- implants
- transparent
- model
- camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 206010002329 Aneurysm Diseases 0.000 title claims abstract description 27
- 230000002792 vascular Effects 0.000 title claims abstract description 14
- 239000002245 particle Substances 0.000 title claims abstract description 8
- 238000005206 flow analysis Methods 0.000 title claims description 10
- 230000002490 cerebral effect Effects 0.000 title claims description 8
- 239000007943 implant Substances 0.000 title abstract description 6
- 238000005259 measurement Methods 0.000 title description 16
- 229920005989 resin Polymers 0.000 title description 9
- 239000011347 resin Substances 0.000 title description 9
- 238000003908 quality control method Methods 0.000 title description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000011324 bead Substances 0.000 claims abstract description 15
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 9
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 4
- 238000000917 particle-image velocimetry Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 210000003743 erythrocyte Anatomy 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000010146 3D printing Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
- 235000011187 glycerol Nutrition 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 210000004369 blood Anatomy 0.000 abstract description 5
- 239000008280 blood Substances 0.000 abstract description 5
- 230000017531 blood circulation Effects 0.000 abstract description 5
- 201000008450 Intracranial aneurysm Diseases 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000007639 printing Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000000338 in vitro Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000005457 optimization Methods 0.000 abstract 1
- 230000002123 temporal effect Effects 0.000 description 8
- 239000013598 vector Substances 0.000 description 7
- 210000001772 blood platelet Anatomy 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000000700 radioactive tracer Substances 0.000 description 3
- 210000005166 vasculature Anatomy 0.000 description 3
- 230000004087 circulation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 241000876466 Varanus bengalensis Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 210000001841 basilar artery Anatomy 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000035487 diastolic blood pressure Effects 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003709 image segmentation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004962 physiological condition Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000541 pulsatile effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000035488 systolic blood pressure Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
- G01P5/20—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance using particles entrained by a fluid stream
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0053—Investigating dispersion of solids in liquids, e.g. trouble
-
- G01N2015/1027—
Abstract
Implantate zur interventionellen Behandlung von zerebralen Aneurysmen sollen unter physiologischen Flussbedingungen in vitro und Patienten-individuell anhand eines dreidimensionalen Modells bzgl. ihres Einflusses auf die Änderung des Strömungsverhaltens des Blutes untersucht werden, insbesondere im Bereich des Aneurysmas (3). Ziel ist eine Patientenspezifische Optimierung von Gefäßimplantaten in Hinblick auf Blutflußveränderungen.
Die Strömungsverhältnisse werden an einem transparenten Kunstharzmodell (2) des betreffenden Gefäßausschnittes (4), das aus 3D-DSA-Daten in einem 3D SLA-Druckprozeß hergestellt wird durch eine PIV-Analyse (1) auf korpuskulärer Ebende präzise ermittelt. Das Modell wird in einen mit einer Glycerinlösung (5) gefüllten durchsichtigen Tank (15) eingesetzt und mit Schläuchen (17) an einer Umwälzpumpe (14) blasenfrei mit der Lösung unter physiologischen Flussbedingungen durchströmt. Die Glycerinlösung enthält Polymerkügelchen mit einem definiertem Durchmesser (5 bis 50 μm) (6), die in ihrer Bewegung zeitlich versetzt (16) mit Licht (10) angeblitzt (11) werden und deren Reflexe mit einer plenoptischen Kamera (7) erfasst werden, die damit über die Zeit gemittelt die Partikelspuren aufgezeichnet und die 3D-Strömung vektoriell (12) oder als Strömungslinie (13) nach Richtung und Geschwindigkeit farblich kodiert in einer Videoausgabe (8) dynamisch dargestellt werden.
Das Verfahren dient der Qualitätsverbesserung, der Auswahl und der Anpassung der Implantate an die individuellen physiologischen Gefäßeigenschaften im Hinblick ihrer Wirkung auf die strömungsmechanischen Veränderungen im Bereich des Aneurysmas (3).Implants for the interventional treatment of cerebral aneurysms should be examined under physiological flow conditions in vitro and patient-individually using a three-dimensional model for their influence on the change in the flow behavior of the blood, especially in the area of the aneurysm (3). The aim is a patient-specific optimization of vascular implants with regard to blood flow changes.
The flow conditions are precisely determined on a transparent synthetic resin model (2) of the relevant vessel section (4), which is produced from 3D-DSA data in a 3D SLA printing process by means of a PIV analysis (1) on a corpuscular plane. The model is inserted into a transparent tank (15) filled with a glycerol solution (5) and through which the solution flows under physiological flow conditions with tubes (17) on a circulating pump (14) without bubbles. The glycerine solution contains polymer beads of a defined diameter (5 to 50 μm) (6), which are staggered in their movement (16) with light (10) (11) and whose reflections are detected with a plenoptic camera (7). averaged over time, the particle traces are recorded and the 3D flow vectorially (12) or as a flow line (13) color coded in terms of direction and speed in a video output (8) are displayed dynamically.
The procedure serves to improve the quality, selection and adaptation of the implants to the individual physiological vascular properties with regard to their effect on the fluid mechanic changes in the region of the aneurysm (3).
Description
Die Erfindung bezieht sich auf eine Einrichtung zur korpuskulare Strömungsmessung (
Einrichtungen zur korpuskularen Strömungsmessung sind bekannt [1, 2]. Sie dienen zur 4D Flussmessung, beispielsweise zum Zwecke der Vermessung der Bodenstruktur an Sedimenten als eine makroskopische Anwendung [3].Devices for corpuscular flow measurement are known [1, 2]. They are used for 4D flow measurement, for example for the purpose of measuring the soil structure of sediments as a macroscopic application [3].
Ziel der Strömungsmessung ist es, die Strömungsvektoren in allen 3 Raumdimensionalen und ihre dynamische Veränderung über die Zeit zu erfassen und visuell darzustellen. Diese werden bei makroskopischen Anwendungen entweder durch die Verwendung binokularer Stereokamera-Anordnungen oder durch Lichtschnittverfahren mit einer digitalen Kamera und einem durch Laserstrahlen erzeugtes Lichtprofil erreicht. Dieser Aufbau ist in Miniaturanwendungen und erst recht in mikroskopischen Anwendungen aufgrund der kleinen räumlichen Abmessungen weder mit einer Stereokameraanordnung noch mit einer Kombination aus digitaler Kamera und Laser zu realisieren und wäre außerdem im Aufbau zu empfindlich was häufige geometrische Justierungen der Anordnung nach wenigen Messvorgängen notwendig machen würde.The goal of flow measurement is to capture and visually represent the flow vectors in all three spatial dimensions and their dynamic change over time. These are achieved in macroscopic applications, either by the use of binocular stereoscopic camera arrangements or by light-slit methods with a digital camera and a laser profile generated by laser beams. Due to its small physical dimensions, this design can not be realized in miniature applications or in microscopic applications, neither with a stereo camera arrangement nor with a combination of digital camera and laser, and would also be too sensitive in structure, which would necessitate frequent geometric adjustments of the arrangement after a few measuring operations ,
Deshalb wird zusätzlich zur Erfassung der Helligkeitsinformation (2D-Helligkeitsverteilung) im Bild durch Verwendung einer plenotptischen Kamera (
Damit sich die Polymerkügelchen (
Die Positionen der erfassten und durch epipolar-geometrische Korrespondenzen bestätigten sowie zusätzlichen Heuristiken in mehreren Objektiven der Mikrolinsenfelder (MLA) verfolgten und korrespondierenden Kügelchen (
Die Partikel (
Als Trägermedium für die Kügelchen (
Für einen geschlossenen Kreislauf der Glycerinlösung (
Im Strömungsbild können nun nicht nur die Pfade (
Es ist daher Aufgabe der Erfindung, eine Einrichtung zur korpuskularen Strömungsmessung (
Durch mikroskopische physiologische Flussinformation am Gefäß und deren Veränderung durch Einbringen von Devices zur Therapie von Aneurysmen (z. B. Effekt auf den Fluss bedingten Wall shear stress, Effekt auf Blutstase, Effekt auf die Flussrichtung am Aneurysma) wird die Qualität notwendiger Interventionen durch verbesserte Positionierung, Auswahl, Design oder Form von eingesetzten Implantaten wie Coils, Stents oder Flow-Divertern überprüft und optimiert.Microscopic physiological flow information on the vessel and its modification by introducing devices for the treatment of aneurysms (eg wall shear stress effect, blood stasis effect, flow direction effect on the aneurysm) improve the quality of necessary interventions through improved positioning , Selection, design or shape of inserted implants such as coils, stents or flow diverters checked and optimized.
Die Qualitätsverbessernde Maßnahme soll primär zu einem verbesserten embolisierenden (Aneurysma-verschließenden) und Flussrichtungs-verändernden Effekt des Device führen (verbesserte Blutstase im Aneurysma, verbesserte Fluss-Umleitung am Aneurysmahals, verbesserter physiologischer laminärer Fluss im Gefäßsystem, verbesserte Bedingungen des Wall shear stress im Gefäßsystem). Sekundär sollen diese Maßnahmen zur Senkung des Eingriffsrisikos ebenso beitragen, wie zur langfristigen Vermeidung von Blutungen oder Belastung des Patienten durch zu wiederholende Eingriffe. Die eingesetzten Stents, Coils etc. können durch „Customizing” an die physiologischen Gegebenheiten des individuellen Patienten angepasst und zugeschnitten werden und dadurch der Herstellerindustrie eine bessere Qualität durch in-vitro Tests ihrer Produkte und damit ein breiteres Einsatzgebiet ermöglichen.The quality improvement measure is primarily intended to result in an improved embolizing (aneurysm-occlusive) and flow direction-altering effect of the device (improved aneurysm blood stasis, improved flow diversion at the aneurysm neck, improved physiological laminar flow in the vasculature, improved conditions of wall shear stress in the vasculature ). Secondarily, these measures should contribute to reducing the risk of intervention as well as to the long-term prevention of bleeding or stress on the patient through repetitive interventions. The used stents, coils, etc. can be adapted and tailored to the physiological conditions of the individual patient by "customizing", thus enabling the manufacturing industry to achieve better quality through in-vitro testing of their products and thus a broader field of application.
Die Lösung dieser Aufgabe erfolgt gemäß Hauptanspruch durch eine Einrichtung zur korpuskulare Strömungsmessung (
Die Gewinnung dieser Richtungs- und Geschwindigkeitsinformation erfolgt vorzugsweise durch PIV (
Die Erfindung wird nachstehend anhand der Figuren erläutert, die ein Ausführungsbeispiel illustrieren. Es zeigtThe invention will be explained below with reference to the figures, which illustrate an embodiment. It shows
Die zu seiner Herstellung aus SDA-Daten gewonnen 3D-Informationen (z. B. im .stl-Format) des zerebralen Gefäßsystemausschnittes wurden sowohl für den Druck eines Modells (
Zitierte PatentliteraturCited patent literature
-
1)
DE10 2010 060 131A1 DE10 2010 060 131A1 -
2)
KR000101136814B1 KR000101136814B1
Zitierte NichtpatentliteraturQuoted non-patent literature
-
3)
P. Menzel, C. Perwaß, A. Petersen, A. Pinnow, L. Wietzke A. Wolter und A. Leder, Erprobung eines neuartigen Lichtfeldkamera-Messsystems zur gleichzeitigen Messung von 3D-3C-Geschwindigkeitsfeldern sowie einer 3D-Oberflächenkontur, Fachtagung ”Lasermethoden in der Strömungsmesstechnik”, 9.–11. September 2014, Karlsruhe P. Menzel, C. Perwaß, A. Petersen, A. Pinnow, L. Wietzke A. Wolter and A. Leder, testing of a novel light field camera measuring system for the simultaneous measurement of 3D 3C velocity fields and a 3D surface contour, conference " Laser Methods in Flow Measurement ", 9.-11. September 2014, Karlsruhe
Zusammenfassung der Bildunterschriften:Summary of captions:
-
1 Skizze der Einrichtung1 Sketch of the device -
2a) Block aus Kunstharz als physiologisches Strukturmodell eines zerebralen Gefäßausschnittes mit zwei Aneurysmata rechts in der Mitte2a) Block made of synthetic resin as a physiological structural model of a cerebral vessel section with two aneurysms in the middle right -
2b) zu2a) gehöriges 3D-Datenmodell (visualisiert)2 B) to2a) associated 3D data model (visualized) -
3 Derselbe Kunstharzblock wie in2a ), jedoch mit einem im Aneurysma eingesetzten Coil.3 The same resin block as in2a ), but with a coil inserted in the aneurysm. -
4 Aufbau und Betrieb der Einrichtung zur Partikelbildgeschwindigkeitsmessung mit plenoptischer Kamera an transparenten dreidimensional gedruckten Kunstharzmodellen von zerebralen Gefäßsystemen mit Aneurysmen zur Strömungsanalyse als Qualitätskontrolle von implantierten Stents, Coils und Flow Diverter4 Construction and operation of the device for particle image velocity measurement with plenoptic camera on transparent three-dimensional printed resin models of cerebral vascular systems with aneurysms for flow analysis as quality control of implanted stents, coils and flow diverter -
5a) Schlüsselbild a) aus einer Sequenz von Schlüsselbildern (key frames) extrahiert aus einer zeitlichen Strömungsanalyse innerhalb eines wenige Millimeter großen Aneurysma.5a) Keyframe a) extracted from a sequence of key frames extracted from a temporal flow analysis within a few millimeters aneurysm. -
5b) Schlüsselbild b) aus einer Sequenz von Schlüsselbildern (key frames) extrahiert aus einer zeitlichen Strömungsanalyse innerhalb eines wenige Millimeter großen Aneurysma.5b) Keyframe b) extracted from a sequence of key frames extracted from a temporal flow analysis within a few millimeters aneurysm. -
5c) Schlüsselbild c) aus einer Sequenz von Schlüsselbildern (key frames) extrahiert aus einer zeitlichen Strömungsanalyse innerhalb eines wenige Millimeter großen Aneurysma.5c) Keyframe c) extracted from a sequence of key frames extracted from a temporal flow analysis within a few millimeters aneurysm. -
5d) Schlüsselbild d) aus einer Sequenz von Schlüsselbildern (key frames) extrahiert aus einer zeitlichen Strömungsanalyse innerhalb eines wenige Millimeter großen Aneurysma.5d) Keyframe d) extracted from a sequence of key frames extracted from a temporal flow analysis within a few millimeters aneurysm. -
5e) Schlüsselbild e) aus einer Sequenz von Schlüsselbildern (key frames) extrahiert aus einer zeitlichen Strömungsanalyse innerhalb eines wenige Millimeter großen Aneurysma.5e) Keyframe e) extracted from a sequence of key frames extracted from a temporal flow analysis within a few millimeters aneurysm. -
5f) Schlüsselbild f) aus einer Sequenz von Schlüsselbildern (key frames) extrahiert aus einer zeitlichen Strömungsanalyse innerhalb eines wenige Millimeter großen Aneurysma.5f) Keyframe f) extracted from a sequence of key frames extracted from a temporal flow analysis within a few millimeters aneurysm.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
zu Fig. 1
- 1
- PC mit Auswerte-Software zur korpuskularen Strömungsmessung (PIV: particle image velocimetry)
- 2
- Transparentes,
patientenspezifisches 3D Modell eines zerebralen Gefäßausschnittes (arteriell) - 3
- Aneurysma im Kunstharzmodell
- 4
- Arterielles Gefäß im Kunstharzmodell
- 5
- Glycerinlösung blutähnlicher Viskosität
- 6
- Polymerpartikeln der Größenordnung von Erythrozyten (Blutplättchen)
- 7
- Plenoptische (Lichtfeld-)Kamera
- 8
- Bildausgabe (z. B. Monitor)
- 9
- Koordinatensystem (x-, y-, z-Richtung)
- 10
- Durchlichtbeleuchtung
- 11
- Licht- oder Laser-Blitze
- 12
- Farbig kodierte Vektoren, die die Strömungsrichtung und Strömungsstärke (Farbe) repräsentieren
- 13
- Farbig kodierte Strömungslinien, die die Strömungsrichtung und Strömungsstärke (Farbe) repräsentieren
- 14
- Pulsierende Umwälzpumpe
- 15
- Flüssigkeitstank
- 16
- Einheit zur zeitlichen Verzögerung der Lichtblitze und deren Synchronisation mit dem Kameraverschluss
- 17
- Zuführende und abführende Schläuche, die einen Kreislauf zwischen Pumpe, Kunstharzmodell und Flüssigkeit im Tank herstellen
- 1
- PC with corpuscular flow measurement evaluation software (PIV: particle image velocimetry)
- 2
- Transparent, patient-specific 3D model of a cerebral vascular section (arterial)
- 3
- Aneurysm in resin model
- 4
- Arterial vessel in resin model
- 5
- Glycerol solution of blood-like viscosity
- 6
- Polymer particles of the order of erythrocytes (platelets)
- 7
- Plenoptic (light field) camera
- 8th
- Image output (eg monitor)
- 9
- Coordinate system (x, y, z direction)
- 10
- Transmitted illumination
- 11
- Light or laser flashes
- 12
- Color coded vectors representing flow direction and flow intensity (color)
- 13
- Colored coded flow lines, which represent the flow direction and flow intensity (color)
- 14
- Pulsating circulation pump
- 15
- liquid tank
- 16
- Unit for delaying the flashes of light and their synchronization with the camera shutter
- 17
- Incoming and outgoing hoses that create a circuit between the pump, resin model and liquid in the tank
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015011062.4A DE102015011062A1 (en) | 2015-08-27 | 2015-08-27 | Particle image velocity measurement with plenoptic camera on transparent three-dimensional printed resin models of cerebral vascular systems with aneurysms for flow analysis as quality control of implants such as stents, coils and flow diverter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015011062.4A DE102015011062A1 (en) | 2015-08-27 | 2015-08-27 | Particle image velocity measurement with plenoptic camera on transparent three-dimensional printed resin models of cerebral vascular systems with aneurysms for flow analysis as quality control of implants such as stents, coils and flow diverter |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102015011062A1 true DE102015011062A1 (en) | 2017-03-02 |
Family
ID=58010616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102015011062.4A Pending DE102015011062A1 (en) | 2015-08-27 | 2015-08-27 | Particle image velocity measurement with plenoptic camera on transparent three-dimensional printed resin models of cerebral vascular systems with aneurysms for flow analysis as quality control of implants such as stents, coils and flow diverter |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102015011062A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107561311A (en) * | 2017-07-11 | 2018-01-09 | 上海交通大学 | Three-dimensional flow field method of testing based on double light-field cameras |
CN110444315A (en) * | 2019-09-04 | 2019-11-12 | 中国科学技术大学 | A kind of particle control device based on multilayer dielectric film |
WO2021259627A1 (en) | 2020-06-24 | 2021-12-30 | Technische Universität Hamburg | Medical training model having at least one blood vessel model |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101136814B1 (en) | 2010-12-03 | 2012-04-19 | 부산대학교 산학협력단 | The measurement method on hemorheologic parameters from blood flow using red blood cells as tracing particles |
DE102010060131A1 (en) | 2010-10-22 | 2012-04-26 | Helmholtz-Zentrum Dresden - Rossendorf E.V. | Apparatus for determining three-dimensional spatial velocity profile of rheological medium in e.g. large microscale reactor, has measuring lance that is moved in three-dimensional space of process vessel |
-
2015
- 2015-08-27 DE DE102015011062.4A patent/DE102015011062A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010060131A1 (en) | 2010-10-22 | 2012-04-26 | Helmholtz-Zentrum Dresden - Rossendorf E.V. | Apparatus for determining three-dimensional spatial velocity profile of rheological medium in e.g. large microscale reactor, has measuring lance that is moved in three-dimensional space of process vessel |
KR101136814B1 (en) | 2010-12-03 | 2012-04-19 | 부산대학교 산학협력단 | The measurement method on hemorheologic parameters from blood flow using red blood cells as tracing particles |
Non-Patent Citations (1)
Title |
---|
P. Menzel, C. Perwaß, A. Petersen, A. Pinnow, L. Wietzke A. Wolter und A. Leder, Erprobung eines neuartigen Lichtfeldkamera-Messsystems zur gleichzeitigen Messung von 3D-3C-Geschwindigkeitsfeldern sowie einer 3D-Oberflächenkontur, Fachtagung "Lasermethoden in der Strömungsmesstechnik", 9.–11. September 2014, Karlsruhe |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107561311A (en) * | 2017-07-11 | 2018-01-09 | 上海交通大学 | Three-dimensional flow field method of testing based on double light-field cameras |
CN110444315A (en) * | 2019-09-04 | 2019-11-12 | 中国科学技术大学 | A kind of particle control device based on multilayer dielectric film |
WO2021259627A1 (en) | 2020-06-24 | 2021-12-30 | Technische Universität Hamburg | Medical training model having at least one blood vessel model |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102010039312B4 (en) | Process for simulating blood flow | |
US6205871B1 (en) | Vascular phantoms | |
DE102007014133B4 (en) | A method of visualizing a sequence of tomographic volume data sets of medical imaging | |
DE102015011062A1 (en) | Particle image velocity measurement with plenoptic camera on transparent three-dimensional printed resin models of cerebral vascular systems with aneurysms for flow analysis as quality control of implants such as stents, coils and flow diverter | |
CN102860827A (en) | MRI involving arterial spin labeling | |
WO2017190732A1 (en) | Three-dimensional vascular surgery simulation model and corresponding production method | |
DE102012217792B4 (en) | Angiographic examination method for displaying flow properties | |
DE102011112638B4 (en) | Microfluidic chip with microfluidic channel system | |
US11950893B2 (en) | Apparatus and method of determining dynamic vascular parameters of blood flow | |
DE102010009884A1 (en) | Method and device for acquiring information about the three-dimensional structure of the inner surface of a body cavity | |
DE102007006142A1 (en) | Method and apparatus for automatically determining a flow of body fluid within vessels of a living being | |
WO2021259627A1 (en) | Medical training model having at least one blood vessel model | |
KR20160103095A (en) | Method for displaying and analyzing body fluid absorption mode of absorbent article | |
DE4029590A1 (en) | Reference system for radiological layer image method - containing localisation rods arranged about patient to enable rapid, precise instrument positioning | |
Gliah | In vitro investigation of cell-free layer formation in microchannels: Dependency on the red blood cell aggregation and field of shear | |
JP2016131836A (en) | Blood flow profile measuring method | |
Kalogirou et al. | Flow patterns in an occluded artery with an end to side anastomosis model. A visualization study | |
RU2766757C1 (en) | Medical simulator for practicing the skills of performing endovascular interventions | |
Kim et al. | Direct Blood Cell Flow Imaging in Microvascular Networks | |
Majak et al. | A preliminary evaluation of a basic fluorescence image processing in MentorEye system using artificially prepared phantoms | |
Meissner et al. | In vivo vascular flow profiling combined with optical tweezers based blood routing | |
Shields et al. | Exploration of pathology-specific flow patterns utilizing high speed angiography at 1000 fps | |
Scharfman | Three dimensional imaging of multiphase flows: from bubbles to sneezes | |
Tolouei et al. | A high spatial method to determine three-dimensional velocity gradient tensor using micro particle image velocimetry | |
Kim et al. | Direct blood cell flow imaging in microvascular networks |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R086 | Non-binding declaration of licensing interest | ||
R084 | Declaration of willingness to licence | ||
R012 | Request for examination validly filed |