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121. 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

122. 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

123. 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

124. 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

125. 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

126. 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

127. 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

128. 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

129. 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

130. 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

131. 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

132. 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

133. 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

134. 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

135. 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

136. Development of a Tailored Thyroid Gland Phantom for Fine-Needle Aspiration Cytology by Three-Dimensional Printing. (PubMed)

, and ultrasonographic (US) characteristics.A three-dimensional (3D) digital model of the human neck was reconstructed from computed tomography data of a subject. This model was used to create 3D-printed templates for various organs that require US visualization. The templates were injected with polymers that provided similar degrees of ultrasound permeability as the corresponding organs. For fabrication of each organ, the respective molds of organs, blood vessels, thyroid gland, and tumor were injected (...) . In the survey, all 45 participants replied that they found the phantom useful for FNAC training, and 30 medical students professed increased interest in thyroid diseases after using the phantom.We successfully fabricated a tailored thyroid gland phantom for transfixion practice. As most of the phantom parts are injected in molds fabricated using a 3D printer, they can be easily reproduced once the molds are fabricated. This phantom is expected to serve as an effective and fully tailored training model

2017 Journal of Surgical Education

137. Evaluation of Different Techniques for Filling Simulated C-shaped Canals of 3-dimensional Printed Resin Teeth. (PubMed)

Evaluation of Different Techniques for Filling Simulated C-shaped Canals of 3-dimensional Printed Resin Teeth. The purpose of this study was to compare the ability of different root canal filling methods on the C1 root canal anatomy using 3-dimensional (3D) printer technology.Mandibular molars were scanned with cone-beam computed tomographic (CBCT) imaging. A mandibular molar tooth with a C1 root canal configuration was selected according to images obtained from CBCT technology. The root canals (...) were shaped with ProTaper Universal rotary instruments (Dentsply Maillefer, Ballaigues, Switzerland) and hand files. After the root canal shaping procedure, the tooth was scanned with micro-computed tomographic imaging, and 80 replicas of the tooth were produced with a 3D printer. Replicas were assigned into 4 groups (n = 20) and were filled using one of the following techniques: a core carrier system (GuttaCore [GC]; Dentsply Tulsa Dental Specialties, Tulsa, OK), a continuous wave obturation

2017 Journal of Endodontics

138. Accuracy of printed dental models made with 2 prototype technologies and different designs of model bases. (PubMed)

printers using different techniques: stereolithography and triple jetting technology (polyjet). The printed models were then scanned with a computed tomography scanner and a desktop laser scanner to create the respective digital models. Evaluation of the accuracy was done by measuring the dentitions with Ortho Analyzer software (3Shape, Copenhagen, Denmark) and by model superimposition with Geomagic Qualify software (3D Systems, Rock Hill, SC). An observer measured the distances twice, with an interval (...) of 2 weeks. The accuracy of the printed models was statistically evaluated by the mixed-effects regression model approach.The results showed that printed models made by the polyjet printer were accurate, regardless of the design of the model base. Printed models made with the stereolithography technique with the regular model base and the horseshoe-shaped base with a bar were accurate, but the transversal distances measured on the printed models with a horseshoe-shaped base were statistically

2017 American journal of orthodontics and dentofacial orthopedics

139. Creating an Optimal 3D Printed Model for Temporal Bone Dissection Training. (PubMed)

Creating an Optimal 3D Printed Model for Temporal Bone Dissection Training. Making a 3-dimensional (3D) temporal bone model is simple using a plaster powder bed and an inkjet printer. However, it is difficult to reproduce air-containing spaces and precise middle ear structures. The objective of this study was to overcome these problems and create a temporal bone model that would be useful both as a training tool and for preoperative simulation.Drainage holes were made to remove excess materials (...) from air-containing spaces, ossicle ligaments were manually changed to bony structures, and small and/or soft tissue structures were colored differently while designing the 3D models. The outcomes were evaluated by 3 procedures: macroscopic and endoscopic inspection of the model, comparison of computed tomography (CT) images of the model to the original CT, and assessment of tactile sensation and reproducibility by 20 surgeons performing surgery on the model.Macroscopic and endoscopic inspection

2017 Rhinology and Laryngology

140. Cardiac 3D Printing and its Future Directions. (PubMed)

Cardiac 3D Printing and its Future Directions. Three-dimensional (3D) printing is at the crossroads of printer and materials engineering, noninvasive diagnostic imaging, computer-aided design, and structural heart intervention. Cardiovascular applications of this technology development include the use of patient-specific 3D models for medical teaching, exploration of valve and vessel function, surgical and catheter-based procedural planning, and early work in designing and refining the latest

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2017 JACC. Cardiovascular imaging

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