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121. Application of 3D printing in the surgical planning of hypertrophic obstructive cardiomyopathy and physician-patient communication: a preliminary study (PubMed)

Application of 3D printing in the surgical planning of hypertrophic obstructive cardiomyopathy and physician-patient communication: a preliminary study 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.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). After generating an STL-file (StereoLithography file) with patients' data, the 3D printer (Objet350 Connex3, Stratasys Ltd., USA) created a 3D model. The pre- and post-operative 3D-printed models were used to make the surgical plan preoperatively and evaluate the outcome postoperatively. Meanwhile, a questionnaire was designed for patients and their relatives to learn

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2018 Journal of thoracic disease

122. Three‐dimensional printing CT‐derived objects with controllable radiopacity (PubMed)

Three‐dimensional printing CT‐derived objects with controllable radiopacity The goal of this work was to develop phantoms for the optimization of pre-operative computed tomography (CT) scans of the prostate artery, which are used for embolization planning.Acrylonitrile butadiene styrene (ABS) pellets were doped with barium sulfate and extruded into filaments suitable for 3D printing on a fused deposition modeling (FDM) printer. Cylinder phantoms were created to evaluate radiopacity (...) as a function of doping percentage. Small-diameter tree phantoms were created to assess their composition and dimensional accuracy. A half-pelvis phantom was created using clinical CT images, to assess the printer's control over cortical bone thickness and cancellous bone attenuation. CT-derived prostate artery phantoms were created to simulate complex, contrast-filled arteries.A linear relationship (R = 0.998) was observed between barium sulfate added (0%-10% by weight), and radiopacity (-31 to 1454

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2018 Journal of Applied Clinical Medical Physics

123. Towards Additive Manufacture of Functional, Spline-Based Morphometric Models of Healthy and Diseased Coronary Arteries: In Vitro Proof-of-Concept Using a Porcine Template (PubMed)

Towards Additive Manufacture of Functional, Spline-Based Morphometric Models of Healthy and Diseased Coronary Arteries: In Vitro Proof-of-Concept Using a Porcine Template The aim of this study is to assess the additive manufacture of morphometric models of healthy and diseased coronary arteries. Using a dissected porcine coronary artery, a model was developed with the use of computer aided engineering, with splines used to design arteries in health and disease. The model was altered (...) to demonstrate four cases of stenosis displaying varying severity, based on published morphometric data available. Both an Objet Eden 250 printer and a Solidscape 3Z Pro printer were used in this analysis. A wax printed model was set into a flexible thermoplastic and was valuable for experimental testing with helical flow patterns observed in healthy models, dominating the distal LAD (left anterior descending) and left circumflex arteries. Recirculation zones were detected in all models, but were visibly

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2018 Journal of functional biomaterials

124. HOPE: Hybrid-Drive Combining Optogenetics, Pharmacology and Electrophysiology (PubMed)

injection cannulas for drug-delivery experiments. Because it can be printed with a latest-generation desktop 3D printer, the production cost is low compared to classical electrophysiology implants, and it can be built within a few hours. The HOPE implant is also reconfigurable to specific needs as it has been created in a computer-aided design (CAD) software and all the files used for its construction are open-source.

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2018 Frontiers in neural circuits

125. The Influence of Selective Laser Melting (SLM) Process Parameters on In-Vitro Cell Response (PubMed)

The Influence of Selective Laser Melting (SLM) Process Parameters on In-Vitro Cell Response The use of laser 3D printers is very perspective in the fabrication of solid and porous implants made of various polymers, metals, and its alloys. The Selective Laser Melting (SLM) process, in which consolidated powders are fully melted on each layer, gives the possibility of fabrication personalized implants based on the Computer Aid Design (CAD) model. During SLM fabrication on a 3D printer, depending

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2018 International journal of molecular sciences

126. Quality of Preanesthesia Teleconsultation : a Randomized Controlled Trial.

Nancy) Patient with technology equipments, which are compatible with the plateform of video-conference : smartphones, touch pads, computer web-browser ( chrome or internet explorer) Webcam and microphone Printer Exclusion Criteria: Patients covered by Articles L. 1121-5 to L. 1121-8, L1122-2 and L. 1122-1-2 of the french public health code. (Persons especially protected by Act) Patients refusing to participate to the study, or refusing the randomization for the group allocation. Preanesthesia

2018 Clinical Trials

127. Assessing the Accuracy of Caries Diagnosis in Bitewing Radiographs Using Different Reproduction Media (PubMed)

Assessing the Accuracy of Caries Diagnosis in Bitewing Radiographs Using Different Reproduction Media After introducing digital radiography, practitioners started reading radiographs from computer monitors; however, many still prefer hard-copy radiographs.This study aimed to assess the possible superiority of either type of radiograph recording media (computer monitor, film, or paper) in diagnosis and perception of the depth of the cariogenic lesions.Twenty digital bitewing radiographs (...) , obtained from 200 posterior extracted teeth, were displayed on an LG monitor and printed on paper and film using Kodak printers. Two observers independently measured lesions depth on the images. Serial sections of teeth were obtained and the sections were evaluated by a stereomicroscope to determine the actual depth of cariogenic lesions. The efficacy of the each medium was assessed by determining its specificity and sensitivity in comparison with those of histological images. Weighted kappa

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2018 Journal of dentistry

128. MULTI-INSTITUTIONAL EVALUATION OF PRODUCING AND TESTING A NOVEL 3D-PRINTED LAPAROSCOPIC TRAINER. (PubMed)

MULTI-INSTITUTIONAL EVALUATION OF PRODUCING AND TESTING A NOVEL 3D-PRINTED LAPAROSCOPIC TRAINER. To create, distribute, and evaluate the efficacy of a portable, cost-effective 3D-printed laparoscopic trainer for surgical skills development.The UCI Trainer (UCiT) laparoscopic simulator was developed via computer-aided designs (CAD), which were used to 3D-print the UCiT. Once assembled, a tablet computer with a rear-facing camera was attached for video and optics. Four institutions were sent (...) the UCiT CAD files with a 3D-printer and instructions for UCiT assembly. For a comparison of the UCiT to a standard trainer, peg transfer and intracorporeal knot tying skills were accessed. These tasks were scored, and participants were asked to rate their experience with the trainers. Lastly, a questionnaire was given to individuals who 3D-printed and assembled the UCiT.We recruited 25 urologists; none had any 3D-printing experience. The cost of printing each trainer was $26.50 USD. Each institution

2018 Urology

129. Will artificial intelligence ever replace doctors?

times ahead for the Airline Pilots Association. Making precision tools from 3D printers. Gourmet meals created with a voice-activated command. Theater and film productions starring faux actors created on keyboards. Will artificial intelligence invade the medical arena? The question is only how deeply it will invade. The role of the traditional physician is at risk of being marginalized as computer software hits the profession hard. Sure, computers cannot palpate an abdomen or perform a rectal exam (...) that sophisticated computer algorithms can synthesize an individual’s personal medical data and generate specific diagnoses, many of which might not have been considered by a human physician. Of course, there’s a lot more to being a decent physician than spitting out a list of diagnoses, as we doctors know despite when empowered patients bring us lists of diseases they think they have after spending some time in the Google School of Medicine. Although artificial intelligence is not a real doctor, it offers

2018 KevinMD blog

130. It’s time to upgrade the outdated intake forms at health care clinics

eleven-page patient questionnaire with instructions to print and complete the form prior to my visit. Like many, I lacked immediate access to a printer. After showing up to my appointment without the form, I was expected to complete it in the clinic’s lobby. As a returning patient of this health system, most of the information asked was already available in the electronic health record (EHR). Did they really need to ask me about my city of birth again? What is already known in the EHR should populate (...) from any computer, tablet or phone, so that our patients can fill out this information in their own time and native language. The forms employ predictive follow up questions and synchronize with the EHR so that patients are prompted to complete only information that needs updating. Some of these companies even provide educational content to give patients context on the questions that they are being asked and the consents that they are signing. I have seen first hand how competitive the health care

2018 KevinMD blog

131. A novel method for periapical microsurgery with the aid of 3D technology: a case report. (PubMed)

A novel method for periapical microsurgery with the aid of 3D technology: a case report. Three-dimensional (3D) technology has gained wide acceptance in dentistry. It has been used for treatment planning and surgical guidance. This case report presented a novel treatment approach to remove cortical bone and root-end during periapical surgery with the help of Cone-Beam Computed Tomography (CBCT), Computer Aided Design (CAD) and three-dimensional (3D) printing technology.A 37-year-old female (...) patient presented with a large periapical lesion of left maxillary lateral incisor and canine was referred for microsurgical endodontic surgery. The data acquired from a preoperative diagnostic CBCT scan and an intra-oral scan was uploaded into surgical planning software and matched. A template that could be used to locate root-ends and lesion areas was virtually designed based on the data and was fabricated using a 3D printer. With the guidance of the template, the overlying cortical bone and root

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2018 BMC Oral Health

132. Outcome and safety analysis of 3D printed patient specific pedicle screw jigs for complex spinal deformities: A comparative study. (PubMed)

reconstruction from computed tomography scan images of all the patients. 3-Matic software was used to create a drill guide. A 3D printer from Stratasys Mojo with ABS P430 model material cartilage (a thermoplastic material) was used for the printing of the vertebra model and jigs. A two-sample test of proportion was used to compare correctly and wrongly placed pedicle screws with 3D printing and freehand technique. t Test with equal variance was used for operating surgical time and blood loss.No superior

2018 The Spine Journal

133. Hill–Sachs lesion measurement with tridimensional models in anterior shoulder instability (PubMed)

Hill–Sachs lesion measurement with tridimensional models in anterior shoulder instability To evaluate the reproducibility and repeatability of Hill-Sachs lesion measurement from computed tomography images, with computer software and tridimensional prototype.Three-dimensional models were made from computed tomography images from 14 patients with anterior shoulder instability, using InVesalius 3.0® software. Hill-Sachs lesions were measured with Rhinocerus 5.0® software with pre-determined (...) position. Mid-lateral distance, perpendicular to humeral shaft, cranial-caudal distance, parallel to humeral shaft, and the longitudinal distance of the lesion were measured. Using the Printer-ZP 310 three-dimensional printer, plaster models were made. To measure the Hill-Sachs lesion, a calibrated universal digital caliper was used in the same way as the software.There was intra-observer and inter-observer variability for measurement of the same model. Observers did not perform the measurements

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2018 Revista brasileira de ortopedia

134. Inotropic and Vasoactive Agents for In-Hospital Heart Failure Management

A, MacDonald P, Keogh A. Haeomodynamic, neurohormonal and symptomatic effects of dobutamine, dopamine and milrinone in severe heart failure [abstract]. Aust N Z J Med. 1998;28(1):79-152. (18) Review Manager (RevMan) [Computer program]. Version 5.1. Copenhagen (DK): The Nordic Cochrane Centre, The Cochrane Collaboration; 2011. (19) Deeks J, Higgins J, Altman D, on behalf of the Cochrane Statistical Methods Group (editors). Cochrane handbook for systematic reviews of interventions [Internet]. Version 5.1.0 (...) . The Cochrane Collaboration; 2011 [cited 2012 Oct 16]. Chapter 9, Analysing data and undertaking meta-analysis. 2011. Available from: http://www.cochrane-handbook.org Inotropic and Vasoactive Agents for In-Hospital Heart Failure Management: A Rapid Review. December 2012; pp. 1–19. 19 Health Quality Ontario 130 Bloor Street West, 10 th Floor Toronto, Ontario M5S 1N5 Tel: 416-323-6868 Toll Free: 1-866-623-6868 Fax: 416-323-9261 Email: EvidenceInfo@hqontario.ca www.hqontario.ca © Queen’s Printer for Ontario

2012 Health Quality Ontario

135. Benefits and Limitations of Entry-Level 3-Dimensional Printing of Maxillofacial Skeletal Models. (PubMed)

previously undergone pediatric craniofacial reconstruction with use of a commercially produced medical model for surgical planning. Each vendor model had been produced using computed tomographic imaging data. With the use of this same data source, in-house models were printed in polylactic acid using a commercially available printer. Data were collected from November 1 to December 30, 2015.Models created from these 2 methods of production were assessed for fidelity of surface anatomy, resilience (...) Benefits and Limitations of Entry-Level 3-Dimensional Printing of Maxillofacial Skeletal Models. A protocol for creating exceptionally low-cost 3-dimensional (3-D) maxillofacial skeletal models does not require proficiency with computer software or intensive labor. Small and less affluent centers can produce models with little loss in accuracy and clinical utility.To highlight the feasibility and methods of introducing in-house, entry-level additive manufacturing (3-D printing) technology

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2017 JAMA otolaryngology-- head & neck surgery

136. Three-dimensional printing of navigational template in localization of pulmonary nodule: A pilot study. (PubMed)

. This study aims to investigate its feasibility in clinical application.Patients with peripheral lung nodules (<2 cm) were enrolled. Preadmission computed tomography images were downloaded and reconstructed into a 3D model. A digital model of the navigational template was designed via computer-aided design software and then exported into 3D printer to produce physical template. The precision of the template-guided nodule localization and associated complications were evaluated.A total of 16 patients were (...) acceptable accuracy for the application in lung nodule localization. The use of this navigational template could facilitate the procedure of lung nodule localization and may potentially break the dependence of percutaneous localization on computed tomography scanning.Copyright © 2017. Published by Elsevier Inc.

2017 Journal of Thoracic and Cardiovascular Surgery

137. A medical student in therapy

this appointment for a month. In March, I started to take an online physiology exam for school but instead spent twenty minutes staring motionless at the computer screen. I eventually input the answers and passed the test, but I’d stopped caring. A week later, I had a panic attack while riding the 6 train through Midtown Manhattan at rush hour. I’d already been feeling trapped by the tightly scheduled lifestyle of a medical student, and getting sandwiched between strangers inside an underground tube (...) of concrete didn’t help. In late April, I scheduled an appointment with my school’s counseling program. An attending psychiatrist did my initial interview: She was warm, and we spoke for over an hour in her well-lit office before she referred me to Dr. Hassan, one of her residents. Dr. Hassan’s soft voice makes me aware of the silence surrounding us. I hear no coworkers rustling about outside her basement-office door, no printers whirring in the background. Her movements are slow and deliberate

2017 KevinMD blog

138. Horizontal ridge reconstruction of the anterior maxilla using customized allogeneic bone blocks with a minimally invasive technique - a case series. (PubMed)

a 3D printed hardcopy model of the maxilla to prepare customized milled bone blocks, to be adapted on the bone defect areas using a minimally invasive subperiosteal tunneling technique.Cone beam computed tomography (CBCT) images of the atrophic maxilla of six patients were acquired and modified into 3D reconstruction models. Data were transferred to a 3D printer and solid models were fabricated using autoclavable nylon polyamide. Before the surgery, freeze-dried cortico-cancellous blocks were

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2017 BMC Oral Health

139. Evaluating the morphology of the left atrial appendage by a transesophageal echocardiographic 3-dimensional printed model. (PubMed)

occlusion, and preprocedure 3D TEE and cardiac computed tomography were enrolled. 3D TEE volumetric data of the LAA were acquired and postprocessed for 3DP. Two types of 3D models of the LAA (ie, hard chamber model and flexible wall model) were printed by a 3D printer. The morphological classification and lobe identification of the LAA were assessed by the 3D chamber model, and LAA dimensions were measured via the 3D wall model. Additionally, a simulation operative rehearsal was performed on the 3D (...) models in cases of challenging LAA morphology for the purpose of understanding the interactions between the device and the model.Three-dimensional TEE volumetric data of the LAA were successfully reprocessed and printed as 3D LAA chamber models and 3D LAA wall models in all patients. The consistency of the morphological classifications of the LAA based on 3D models and cardiac computed tomography was 0.92 (P < .01). The differences between the LAA ostium dimensions and depth measured using the 3D

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2017 Medicine

140. Circumferential Three-Dimensional-Printed Tracheal Grafts: Research Model Feasibility and Early Results. (PubMed)

models of porcine subject tracheas were generated using preoperative computed tomography scans. Two designs were used to test graft customizability and the limits of the construction process. Designs I and II used 270-degree and 360-degree external polycaprolactone scaffolds, respectively, both encompassing a circumferential extracellular matrix collagen layer. The polycaprolactone scaffolds were made in a fused-deposition modeling 3D printer and customized to the recipient's anatomy. Design I

2017 Annals of Thoracic Surgery

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