first_img News | CT Angiography (CTA) | August 06, 2019 Artificial Intelligence Improves Heart Attack Risk Assessment When used with a common heart scan, machine learning, a type of artificial intelligence (AI), does better than… read more February 26, 2009 – The first 3D imaging results obtained with a new imaging technology called Magnetic Particle Imaging (MPI) produced reportedly unprecedented real-time images of arterial blood flow and volumetric heart motion, reported Royal Philips Electronics. The technology uses the magnetic properties of iron-oxide nanoparticles injected into the bloodstream and has been used in a pre-clinical studies. This is said to represent a major step forward in taking Magnetic Particle Imaging from a theoretical concept to an imaging tool to help improve diagnosis and therapy planning for many of the world’s major diseases, such as heart disease, stroke and cancer. The results of the pre-clinical study were published in issue 54 of Physics in Medicine and Biology (2009). “A novel noninvasive cardiac imaging technology is required to further unravel and characterize the disease processes associated with atherosclerosis, in particular those associated with vulnerable plaque formation which is a major risk factor for stroke and heart attacks,” said Professor Valentin Fuster, M.D., Ph.D., director of the Mount Sinai Heart Center, New York. “Through its combined speed, resolution and sensitivity, Magnetic Particle Imaging technology has great potential for this application, and the latest in-vivo imaging results represent a major breakthrough.”According to Henk van Houten, senior vice president of Philips Research and head of the Healthcare research program, “By adding important functional information to the anatomical data obtained from existing modalities such as CT and MR, Philips’ MPI technology has the potential to significantly help in the diagnosis and treatment planning of major diseases such as atherosclerosis and congenital heart defects.”Philips’ Magnetic Particle Imaging uses the magnetic properties of injected iron-oxide nanoparticles to measure the nanoparticle concentration in the blood. Because the human body contains no naturally occurring magnetic materials visible to MPI, there is no background signal. After injection, the nanoparticles therefore appear as bright signals in the images, from which nanoparticle concentrations can be calculated. By combining high spatial resolution with short image acquisition times (as short as 1/50th of a second), Magnetic Particle Imaging can capture dynamic concentration changes as the nanoparticles are swept along by the blood stream. This could ultimately allow MPI scanners to perform a wide range of functional cardiovascular measurements in a single scan. These could include measurements of coronary blood supply, myocardial perfusion, and the heart’s ejection fraction, wall motion and flow speeds.The results obtained from Philips’ experimental MPI scanner mark an important step towards the development of a whole-body system for use on humans. Some of the technical challenges in scaling up the system relate to the magnetic field generation required for human applications. Others lie in the measurement and processing of the extremely weak signal emitted by the nanoparticles. Signal measurement and processing are areas where Philips has a great deal of proven expertise and experience that it is currently applying to the task.The scientific article “Three-dimensional real-time in vivo magnetic particle imaging” published in issue 54 of Physics in Medicine and Biology (2009) can be downloaded from http://stacks.iop.org/0031-9155/54/L1. For more information: www.medical.philips.com FacebookTwitterLinkedInPrint分享 Video Player is loading.ITN Assessing Cardiovascular Risk in Ultra-endurance AthletesPlay VideoPlayMuteCurrent Time 0:00/Duration 11:59Loaded: 1.36%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -11:59 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. 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News | February 26, 2009 Magnetic Particle Imaging Generates Real-Time Blood Flow, Heart Movement Images Videos | Cardiac Imaging | July 30, 2019 VIDEO: Assessing Cardiovascular Risk in Ultra-endurance Athletes Nate Bachman, graduate read more Videos | CT Angiography (CTA) | August 07, 2019 VIDEO: Walk Around of a GE Cardiographe Dedicated Cardiac CT Scanner This is a quick walk around of the GE Healthcare Cardiographe dedicated cardiac CT system on display at the… read more An example of FFR-CT imaging from Beaumont Hospital in Royal Oak, Mich. The left image shows a 3D generated image of the coronary tree from a CT scan evaluated with computational fluid dynamics to determine the FFR numbers. It shows a severe restriction of the left main artery which requires a stent to revacularize. The image on the right is a comparison with the invasive angiogram from the cath lab prior to stenting.  Video Player is loading.Ron Blankstein explains trends at the 2019 SCCT meetingPlay VideoPlayMuteCurrent Time 0:00/Duration 4:30Loaded: 3.68%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -4:30 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. 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Related Content Video Player is loading.Mark Ibrahim explains what EPs need from CT imagingPlay VideoPlayMuteCurrent Time 0:00/Duration 5:23Loaded: 3.08%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -5:23 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. 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Videos | CT Angiography (CTA) | August 07, 2019 VIDEO: Walk Around of a Siemens Go.Top Dedicated Cardiac Scanner This is a quick walk around of the new Siemens Somatom Go.top cardiovascular edition compact computed tomography (CT) read more Videos | Cardiac Imaging | July 30, 2019 VIDEOS | EP LAB | JULY 26, 2019 VIDEO: What Electrophysiologists Need From CT Imaging Prior to AF and VT Ablations Mark Ibrahim, M.D., F read more Video Player is loading.Pierre Qian explains radiotherapy to ablate VTPlay VideoPlayMuteCurrent Time 0:00/Duration 7:34Loaded: 2.19%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -7:34 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. 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Videos | Cardiac Imaging | July 30, 2019 VIDEO: The History of CT Calcium Scoring Arthur Agatston, M.D., clinical pro read more Videos | Radiation Therapy | July 30, 2019 VIDEO: Use of Radiotherapy to Noninvasively Ablate Ventricular Tachycardia Pierre Qian, MBBS, read more Video Player is loading.GE Cardiographe cardiac CT scanner at SCCT19Play VideoPlayMuteCurrent Time 0:00/Duration 0:38Loaded: 26.15%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -0:38 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. 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One of the big trends in cardiac computed tomography (CT) imaging has been the introduction of noninvasive… read more Video Player is loading.Arthur Agatston explains the history of CT calcium scoring Play VideoPlayMuteCurrent Time 0:00/Duration 9:54Loaded: 1.67%Stream Type LIVESeek to live, currently playing liveLIVERemaining Time -9:54 Playback Rate1xChaptersChaptersDescriptionsdescriptions off, selectedCaptionscaptions settings, opens captions settings dialogcaptions off, selectedAudio Trackdefault, selectedFullscreenThis is a modal window.Beginning of dialog window. 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News | Cardiovascular Ultrasound | August 07, 2019 Contrast Use in First Transthoracic Echocardiogram for Heart Failure Reduces Repeat Testing Heart failure is the fourth most common cause for all admission to U.S. hospitals, and it is the most common reason for… read more Videos | CT Angiography (CTA) | July 19, 2019 VIDEO: Overview of Cardiac CT Trends and 2019 SCCT Meeting Highlights … read morelast_img read more