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https://www.readbyqxmd.com/read/29655572/3d-modelling-and-printing-technology-to-produce-patient-specific-3d-models
#1
Nicolette S Birbara, James M Otton, Nalini Pather
BACKGROUND: A comprehensive knowledge of mitral valve (MV) anatomy is crucial in the assessment of MV disease. While the use of three-dimensional (3D) modelling and printing in MV assessment has undergone early clinical evaluation, the precision and usefulness of this technology requires further investigation. This study aimed to assess and validate 3D modelling and printing technology to produce patient-specific 3D MV models. METHODS: A prototype method for MV 3D modelling and printing was developed from computed tomography (CT) scans of a plastinated human heart...
November 10, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29610935/correction-to-feasibility-and-validity-of-printing-3d-heart-models-from-rotational-angiography
#2
Manoj Parimi, John Buelter, Vignan Thanugundla, Sri Condoor, Nadeem Parkar, Saar Danon, Wilson King
The original version of this article unfortunately contained a mistake.
April 2, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29607159/application-of-3d-printing-in-the-surgical-planning-of-hypertrophic-obstructive-cardiomyopathy-and-physician-patient-communication-a-preliminary-study
#3
Hong-Chang Guo, Yang Wang, Jiang Dai, Chang-Wei Ren, Jin-Hua Li, Yong-Qiang Lai
Background: The aim of this study was to evaluate the effect of 3-dimensional (3D) printing in treatment of hypertrophic obstructive cardiomyopathy (HOCM) and its roles in doctor-patient communication. Methods: 3D-printed models were constructed preoperatively and postoperatively in seven HOCM patients received surgical treatment. Based on multi-slice computed tomography (CT) images, regions of disorder were segmented using the Mimics 19.0 software (Materialise, Leuven, Belgium)...
February 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29568478/toward-a-patient-specific-tissue-engineered-vascular-graft
#4
Cameron Best, Robert Strouse, Kan Hor, Victoria Pepper, Amy Tipton, John Kelly, Toshiharu Shinoka, Christopher Breuer
Integrating three-dimensional printing with the creation of tissue-engineered vascular grafts could provide a readily available, patient-specific, autologous tissue source that could significantly improve outcomes in newborns with congenital heart disease. Here, we present the recent case of a candidate for our tissue-engineered vascular graft clinical trial deemed ineligible due to complex anatomical requirements and consider the application of three-dimensional printing technologies for a patient-specific graft...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29561912/clinical-value-of-patient-specific-three-dimensional-printing-of-congenital-heart-disease-quantitative-and-qualitative-assessments
#5
Ivan Wen Wen Lau, Dongting Liu, Lei Xu, Zhanming Fan, Zhonghua Sun
OBJECTIVE: Current diagnostic assessment tools remain suboptimal in demonstrating complex morphology of congenital heart disease (CHD). This limitation has posed several challenges in preoperative planning, communication in medical practice, and medical education. This study aims to investigate the dimensional accuracy and the clinical value of 3D printed model of CHD in the above three areas. METHODS: Using cardiac computed tomography angiography (CCTA) data, a patient-specific 3D model of a 20-month-old boy with double outlet right ventricle was printed in Tango Plus material...
2018: PloS One
https://www.readbyqxmd.com/read/29544410/novel-3d-display-of-heart-models-in-the-postoperative-care-setting-improves-cicu-caregiver-confidence
#6
Laura J Olivieri, David Zurakowski, Karthik Ramakrishnan, Lillian Su, Fahad A Alfares, Matthew R Irwin, Jenna Heichel, Axel Krieger, Dilip S Nath
BACKGROUND: Postoperative care delivered in the pediatric cardiac intensive care unit (CICU) relies on providers' understanding of patients' congenital heart defects (CHDs) and procedure performed. Novel, bedside use of virtual, three-dimensional (3D) heart models creates access to patients' CHD to improve understanding. This study evaluates the impact of patient-specific virtual 3D heart models on CICU provider attitudes and care delivery. METHODS: Virtual 3D heart models were created from standard preoperative cardiac imaging of ten patients with CHD undergoing repair and displayed on a bedside tablet in the CICU...
March 2018: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29532966/cost-effectiveness-of-alternative-smoking-cessation-scenarios-in-spain-results-from-the-equiptmod
#7
Marta Trapero-Bertran, Celia Muñoz, Kathryn Coyle, Doug Coyle, Adam Lester-George, Reiner Leidl, Bertalan Németh, Kei-Long Cheung, Subhash Pokhrel, Ángel Lopez-Nicolás
AIMS: To assess the cost-effectiveness of alternative smoking cessation scenarios from the perspective of the Spanish National Health Service (NHS). DESIGN: We used the European study on Quantifying Utility of Investment in Protection from Tobacco model (EQUIPTMOD), a Markov-based state transition economic model, to estimate the return on investment (ROI) of: (a) the current provision of smoking cessation services (brief physician advice and printed self-helped material + smoking ban and tobacco duty at current levels); and (b) four alternative scenarios to complement the current provision: coverage of proactive telephone calls; nicotine replacement therapy (mono and combo) [prescription nicotine replacement therapy (Rx NRT)]; varenicline (standard duration); or bupropion...
March 13, 2018: Addiction
https://www.readbyqxmd.com/read/29521736/empowered-to-serve-implementing-community-stroke-outreach-using-peer-educators-to-improve-readiness-to-act-among-local-community-members
#8
Nataliya Omelchenko, Karen L Saban, Pamela Andresen, Audrey Klopp, Janice Lau
The purpose of this project was to develop a community-based volunteer group of peer educators to provide stroke education to local residents aimed at increasing stroke awareness and action readiness using the American Heart Association and American Stroke Association's "Empowered to Serve" evidence-based curriculum. The "Don't Miss a Stroke" module addresses the recognition of stroke warning signs, actions to take during a stroke, and stroke prevention. A total of 16 volunteers were recruited and subsequently trained...
April 2018: Journal of Neuroscience Nursing: Journal of the American Association of Neuroscience Nurses
https://www.readbyqxmd.com/read/29505446/description-of-a-novel-set-up-for-functional-echocardiographic-assessment-of-left-ventricular-performance-during-ex-vivo-heart-perfusion
#9
Giulia Maria Ruggeri, Joshua Qua Hiansen, Emanuele Pivetta, Azad Mashari, Flavia Ballocca, Roberto Vanin Pinto Ribeiro, Liming Xin, Mitesh Badiwala, Babita Thampinathan, Massimiliano Meineri
Ex vivo heart perfusion (EVHP) is a new technology aimed at decreasing cold ischemia time and evaluating cardiac function before transplanting a donor heart. In an experimental EVHP swine model, we tested a 3D-printed custom-made set-up to perform surface echocardiography on an isolated beating heart during left ventricular loading. The views obtained at any time point were equivalent to standard transesophageal and transthoracic views. A decrease in left ventricular function during EVHP was observed in all experiments...
March 1, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29485967/report-of-the-third-heart-surgery-forum-scientific-sessions-zagreb-croatia-december-6-8-2017-conference-highlights
#10
Michael S Firstenberg, Tom C Nguyen, Harold Roberts, Mark M Levinson, Igo Rudez
The Heart Surgery Forum is an online community dedicated to topics related to all aspects of cardiothoracic surgery. It consists of an informative website (www.hsforum.com), a traditional indexed journal both in print and online, and an email-based "list-serv" for discussion of surgical cases and techniques. The email list-serv, "OpenHeart-L" (The Forum) is composed of surgeons and allied specialties (perfusion, anesthesia, nursing). Dr. Mark Levinson (USA) started The Forum originally in 1995...
February 26, 2018: Heart Surgery Forum
https://www.readbyqxmd.com/read/29475482/ultrasensitive-determination-of-receptor-tyrosine-kinase-with-a-label-free-electrochemical-immunosensor-using-graphene-quantum-dots-modified-screen-printed-electrodes
#11
Fariba Mollarasouli, Verónica Serafín, Susana Campuzano, Paloma Yáñez-Sedeño, José M Pingarrón, Karim Asadpour-Zeynali
A new label-free electrochemical immunosensor is constructed for the selective and sensitive determination of the clinically relevant biomarker receptor tyrosine kinase (AXL) in human serum. The disposable immunosensing platform is prepared by immobilization of the specific anti-AXL antibody onto amine functionalized graphene quantum dots (fGQDs)-modified screen-printed carbon electrodes (SPCEs). The affinity reactions were monitored by measuring the decrease in the differential pulse voltammetric (DPV) response of the redox probe Fe(CN)6 3-/4- ...
June 29, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29470257/dynamic-patient-specific-three-dimensional-simulation-of-mitral-repair-can-we-practice-mitral-repair-preoperatively
#12
Olivia K Ginty, John M Moore, Yuanwei Xu, Wenyao Xia, Satoru Fujii, Daniel Bainbridge, Terry M Peters, Bob B Kiaii, Michael W A Chu
OBJECTIVE: Planned mitral repair strategies are generally established from preoperative echocardiography; however, specific details of the repair are often determined intraoperatively. We propose that three-dimensional printed, patient-specific, dynamic mitral valve models may help surgeons plan and trial all the details of a specific patient's mitral repair preoperatively. METHODS: Using preoperative echocardiography, segmentation, modeling software, and three-dimensional printing, we created dynamic, high-fidelity, patient-specific mitral valve models including the subvalvular apparatus...
January 2018: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29453808/three-dimensional-printing-in-congenital-heart-disease-a-systematic-review
#13
REVIEW
Ivan Lau, Zhonghua Sun
Three-dimensional (3D) printing has shown great promise in medicine with increasing reports in congenital heart disease (CHD). This systematic review aims to analyse the main clinical applications and accuracy of 3D printing in CHD, as well as to provide an overview of the software tools, time and costs associated with the generation of 3D printed heart models. A search of different databases was conducted to identify studies investigating the application of 3D printing in CHD. Studies based on patient's medical imaging datasets were included for analysis, while reports on in vitro phantom or review articles were excluded from the analysis...
February 17, 2018: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/29452273/3d-bioprinted-functional-and-contractile-cardiac-tissue-constructs
#14
Zhan Wang, Sang Jin Lee, Heng-Jie Cheng, James J Yoo, Anthony Atala
Bioengineering of a functional cardiac tissue composed of primary cardiomyocytes has great potential for myocardial regeneration and in vitro tissue modeling. However, its applications remain limited because the cardiac tissue is a highly organized structure with unique physiologic, biomechanical, and electrical properties. In this study, we undertook a proof-of-concept study to develop a contractile cardiac tissue with cellular organization, uniformity, and scalability by using three-dimensional (3D) bioprinting strategy...
February 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29440763/rhythm-an-open-source-imaging-toolkit-for-cardiac-panoramic-optical-mapping
#15
Christopher Gloschat, Kedar Aras, Shubham Gupta, N Rokhaya Faye, Hanyu Zhang, Roman A Syunyaev, Roman A Pryamonosov, Jack Rogers, Matthew W Kay, Igor R Efimov
Fluorescence optical imaging techniques have revolutionized the field of cardiac electrophysiology and advanced our understanding of complex electrical activities such as arrhythmias. However, traditional monocular optical mapping systems, despite having high spatial resolution, are restricted to a two-dimensional (2D) field of view. Consequently, tracking complex three-dimensional (3D) electrical waves such as during ventricular fibrillation is challenging as the waves rapidly move in and out of the field of view...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29422747/yoga-in-print-media-missing-the-heart-of-the-practice
#16
Heather Freeman, Nadezhda Vladagina, Elika Razmjou, Christiane Brems
Background: Popular media typically portray yoga as an exercise or posture practice despite the reality that yoga comprised eight practices (called limbs) including ethical behavior, conscious lifestyle choices, postures, breathing, introspection, concentration, meditation, and wholeness. Aim: This study assessed the comprehensiveness of yoga practice as represented in articles in the popular yoga magazine, Yoga Journal . It explored the degree to which articles referenced each of the eight limbs of yoga and other contents (e...
September 2017: International Journal of Yoga
https://www.readbyqxmd.com/read/29412085/compliant-buckled-foam-actuators-and-application-in-patient-specific-direct-cardiac-compression
#17
Benjamin C Mac Murray, Chaim C Futran, Jeanne Lee, Kevin W O'Brien, Amir A Amiri Moghadam, Bobak Mosadegh, Meredith N Silberstein, James K Min, Robert F Shepherd
We introduce the use of buckled foam for soft pneumatic actuators. A moderate amount of residual compressive strain within elastomer foam increases the applied force ∼1.4 × or stroke ∼2 × compared with actuators without residual strain. The origin of these improved characteristics is explained analytically. These actuators are applied in a direct cardiac compression (DCC) device design, a type of implanted mechanical circulatory support that avoids direct blood contact, mitigating risks of clot formation and stroke...
February 2018: Soft Robotics
https://www.readbyqxmd.com/read/29409167/three-dimensional-printing-enhances-preparation-for-repair-of-double-outlet-right-ventricular-surgery
#18
Liyun Zhao, Sijie Zhou, Taibing Fan, Bin Li, Weijie Liang, Haoju Dong
OBJECTIVE: To assess the clinical value of three-dimensional (3D) printing technology for treatment strategies for complex double outlet right ventricle (DORV). METHODS: Twenty-five patients with complex double outlet right ventricle were enrolled in this study. The patients were divided into two groups: 3D printing group (eight patients) and a non-3-D printing control group (17 patients). The cardiac images of patients in the 3D printing group were transformed to Digital Imaging and Communications and were segmented and reconstructed to create a heart model...
January 2018: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29399969/role-of-virtual-reality-in-congenital-heart-disease
#19
Chin Siang Ong, Aravind Krishnan, Chen Yu Huang, Philip Spevak, Luca Vricella, Narutoshi Hibino, Juan R Garcia, Lasya Gaur
OBJECTIVE: New platforms for patient imaging present opportunities for improved surgical planning in complex congenital heart disease (CHD). Virtual reality (VR) allows for interactive manipulation of high-resolution representations of patient-specific imaging data, as a supplement to traditional 2D visualizations and 3D printed heart models. DESIGN: We present the novel use of VR for the presurgical planning of cardiac surgery in two infants with complex CHD to demonstrate interactive real-time views of complex intra and extracardiac anatomy...
February 5, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29376102/quantification-of-uncertainty-in-the-assessment-of-coronary-plaque-in-ccta-through-a-dynamic-cardiac-phantom-and-3d-printed-plaque-model
#20
Taylor Richards, Gregory M Sturgeon, Juan Carlos Ramirez-Giraldo, Geoffrey D Rubin, Lynne Hurwitz Koweek, William Paul Segars, Ehsan Samei
The purpose of this study was to develop a dynamic physical cardiac phantom with a realistic coronary plaque to investigate stenosis measurement accuracy under clinically relevant heart-rates. The coronary plaque model (5 mm diameter, 50% stenosis, and 32 mm long) was designed and 3D-printed with tissue equivalent materials (calcified plaque with iodine-enhanced lumen). Realistic cardiac motion was modeled by converting computational cardiac motion vectors into compression and rotation profiles executed by a commercial base cardiac phantom...
January 2018: Journal of Medical Imaging
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