Doctors can perfect procedures on a model before the intervention
New 3D printed heart technology could reduce the number of heart surgeries in children with congenital heart disease, according to Dr Peter Verschueren who spoke on the topic today at EuroEcho-Imaging 2014.1 Dr Verschueren brought 3D printed models of the heart to his lecture including models used to plan real cases in patients.
EuroEcho-Imaging is the annual meeting of the European Association of Cardiovascular Imaging (EACVI), a branch of the European Society of Cardiology (ESC), and is held 3-6 December in Vienna, Austria.
Dr Verschueren said: "Children with congenital heart disease often need up to four open heart surgeries at different times of life. The 3D printed copy of the heart could reduce this to one or two because doctors can choose and practice the best interventional approach and device beforehand. This will avoid children spending months in intensive care."
Three dimensional (3D) printing uses a machine to print objects layer by layer. Instead of ink the printer uses plastics, metals and other materials. The technology was first used in the automotive and aerospace industries to make prototypes. Dr Verschueren said: "You can make complex, unique things, which is useful in medicine because each patient is different."
3D printing entered the medical field around two decades ago in craniomaxillofacial and orthopaedic surgery. 3D reconstructions of a patient's bone were made from a computed tomography (CT) scan. Today the technology is also used to make hearing aids. Printing 3D hearts was made possible with flexible materials for printing and fast scanners that can trace the beating heart. A CT or magnetic resonance imaging (MRI) scan is used to print muscles and valves which can be beating or static.
The models are used to plan surgeries in children with congenital heart diseases such as double outlet right ventricle or Tetralogy of Fallot. Dr Verschueren said: "Until recently, doctors would look at an image and then try to visualise the heart in 3D. Now they can use a 3D copy of an individual patient's heart to plan the procedure in detail before they go into the operating theatre."
He added: "This is still a relatively new technology but there is increasing interest in using 3D printed models to plan heart valve interventions in adults. This could include complex bicuspid aortic valve cases that doctors want to treat with transcatheter aortic valve implantation (TAVI) and new transcatheter interventions for repairing or replacing the mitral and tricuspid valves."
Today at EuroEcho-Imaging, biomedical research engineer Helen O' Grady from Galway, Ireland, presents a novel 3D printed model of tricuspid regurgitation she developed to test a new device and train interventionists in the implantation procedure.2 Ms O'Grady used CT scans of tricuspid regurgitation patients to build a 3D software model which she then used for 3D printing of a right heart and tricuspid valve annulus model..
She took the additional step of using the 3D printed model to mould a more flexible model that is compatible with echocardiography and fluoroscopy. It is housed in a cardiac anatomy rig that replicates the anatomical conditions of the heart in the body as well as the leaflet motion of the valve. Doctors can use the model to practice implantation of the device on a patient's exact anatomy before the procedure.
Ms O'Grady, said: "There is a variation in normal anatomies and more so in diseased anatomies such as tricuspid regurgitation. Being able to practice on the model allows for better surgical planning and doctors can optimise the interventional procedure pre-operatively. Cardiologists, surgeons and physicians say there's nothing like having a tangible model in your hands as it gives such invaluable insight into the patient anatomy involved."
She added: "3D models can be used to discuss the intervention with the medical team, patients and, in the case of congenital heart defects, with parents. It helps everyone affected to better understand what the procedure will involve."
Professor Patrizio Lancellotti, EACVI President, said: "3D imaging is a main theme of EuroEcho-Imaging this year and 3D printing of the heart is particularly exciting. It allows us to make a perfect model of a patient's anatomy and decide the optimal device and procedure in advance."
Jacqueline Partarrieu | EurekAlert!
Further reports about: > 3-D > CT > CT scan > CT scans > Cardiology > MRI scan > aortic > aortic valve > computed tomography > congenital heart disease > congenital heart diseases > hearing aids > heart defects > heart disease > magnetic resonance imaging > mitral and tricuspid valves > orthopaedic surgery > procedure
First transcatheter implant for diastolic heart failure successful
16.11.2017 | The Ohio State University Wexner Medical Center
Theranostic nanoparticles for tracking and monitoring disease state
13.11.2017 | SLAS (Society for Laboratory Automation and Screening)
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
20.11.2017 | Earth Sciences
20.11.2017 | Earth Sciences
20.11.2017 | Life Sciences