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161. Does Food Handler Training Improve Food Safety?

of sufficiently strong or moderate quality to include in this review. The review found insufficient research evidence that food handler training programs improve food safety practices among trained food handlers and limited evidence that it enhances knowledge or behaviour. Various methods of delivering training (live lecture, taped instruction, or computer system) are equally effective at enhancing knowledge. Mandatory training of managers, whose premises have been closed because of a threat to public health (...) training to be effective in enhancing food safety knowledge and behaviour among food handlers. Two of these three studies (Rinke et al., 1975; Waddell & Rinke, 1985) based their findings of improved knowledge by comparing pre-post test results from different training methods (live lecture, taped instruction, or computer system). Rinke conducted the training in a classroom setting with 60 food handlers employed in university residence halls. Waddell and Rinke held the training in a classroom with 230

2011 Peel Health Library

162. Practical alignment method for X-ray spectral measurement in micro-CT system based on 3D printing technology (PubMed)

Practical alignment method for X-ray spectral measurement in micro-CT system based on 3D printing technology This study presents a practical alignment method for X-ray spectral measurement in a rotating gantry based micro-computed tomography (micro-CT) system using three-dimensional (3D) printing technology. In order to facilitate the spectrometer placement inside the gantry, supporting structures including a cover and a stand were dedicatedly designed and printed using a 3D printer. According

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2016 Biomedical physics & engineering express

163. Macro-to-micro interfacing to microfluidic channels using 3D-printed templates: Application to time-resolved secretion sampling of endocrine tissue (PubMed)

fluidic reservoirs. We previously introduced the concept of using hand fabricated polymer inserts to template cell culture and sampling reservoirs into PDMS devices, allowing rapid stimulation and sampling of endocrine tissue. However, fabrication of the fluidic reservoirs was time consuming, tedious, and was prone to errors during device curing. Here, we have implemented computer-aided design and 3D printing to circumvent these fabrication obstacles. In addition to rapid prototyping and design (...) by temporally assaying glucose-stimulated insulin secretion from <10 pancreatic islets and glycerol secretion from 2 mm adipose tissue explants, suggesting that 3D-printed interface templates could be applicable to a variety of cells and tissue types. More generally, this work validates desktop 3D printers as versatile interfacing tools in microfluidic laboratories.

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2016 The Analyst

164. A Protocol for Bioinspired Design: A Ground Sampler Based on Sea Urchin Jaws (PubMed)

observation, specimen characterization, device fabrication and mechanism bioexploration. The last step of bioexploration allows for a deeper understanding of the initial biology. The design architecture of the Aristotle's lantern is analyzed with micro-computed tomography and individual teeth are examined with scanning electron microscopy to identify the microstructure. Bioinspired designs are fabricated with a 3D printer, assembled and tested to determine the most efficient lantern opening and closing

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2016 Journal of visualized experiments : JoVE

165. 3D Printed Dry EEG Electrodes (PubMed)

3D Printed Dry EEG Electrodes Electroencephalography (EEG) is a procedure that records brain activity in a non-invasive manner. The cost and size of EEG devices has decreased in recent years, facilitating a growing interest in wearable EEG that can be used out-of-the-lab for a wide range of applications, from epilepsy diagnosis, to stroke rehabilitation, to Brain-Computer Interfaces (BCI). A major obstacle for these emerging applications is the wet electrodes, which are used as part of the EEG (...) setup. These electrodes are attached to the human scalp using a conductive gel, which can be uncomfortable to the subject, causes skin irritation, and some gels have poor long-term stability. A solution to this problem is to use dry electrodes, which do not require conductive gel, but tend to have a higher noise floor. This paper presents a novel methodology for the design and manufacture of such dry electrodes. We manufacture the electrodes using low cost desktop 3D printers and off-the-shelf

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2016 Sensors (Basel, Switzerland)

166. Effect of Three-Dimensional Printed Personalized Moisture Chamber Spectacles on the Periocular Humidity (PubMed)

Effect of Three-Dimensional Printed Personalized Moisture Chamber Spectacles on the Periocular Humidity Purpose. To assess the effect of three-dimensional (3D) printed personalized moisture chamber spectacles (PMCS) on the periocular humidity. Methods. Facial computed tomography (CT) scanning was conducted on 10 normal subjects. PMCS was designed based on volume rendered CT images and produced using a 3D printer. Periocular humidity of PMCS and commercially available uniformed moisture chamber (...) spectacles (UMCS) were measured for 30 minutes via microhydrometer. Results. The mean ambient humidity was 15.76 ± 1.18%. The mean periocular humidity was 52.14 ± 3.00% in PMCS and 37.67 ± 8.97% in UMCS. The difference was significant (P < 0.001). Additionally, PMCS always demonstrated lower humidity than dew points. Conclusion. PMCS made by 3D printer provides appropriate fitness for the semiclosed humid chamber. PMCS showed higher performance than UMCS. The wearing of PMCS would be an effective method

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2016 Journal of ophthalmology

167. A depth-sensing technique on 3D-printed compensator for total body irradiation patient measurement and treatment planning (PubMed)

measurements from computed tomography (CT) scan images. The thickness, source to surface distance, and off-axis distance of the phantom at different body section were measured for TBI treatment planning. A detailed compensator design was calculated to achieve a uniform dose distribution throughout the phantom. The compensator was fabricated using a 3D printer, silicone molding, and a mixture of wax and tungsten powder. In vivo dosimetry measurements were performed using optically stimulated luminescent (...) detectors.The scan of the phantom took approximately 30 s. The mean error for thickness measurements at each section of phantom relative to CT was 0.48 ± 0.27 cm. The average fabrication error for the 3D-printed compensator was 0.16 ± 0.15 mm. In vivo measurements for an end-to-end test showed that overall dose differences were within 5%.A technique for planning and fabricating a compensator for TBI treatment using a depth camera equipped tablet and a 3D printer was demonstrated to be sufficiently accurate

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2016 Medical physics

168. 3D Geplante Osteosynthesen Mit Patientenspezifischen Zielvorrichtungen

by the National Library of Medicine related topics: Arms and Interventions Go to Arm Intervention/treatment Experimental: patient specific guides fracture fixation with 3D planning and use of patient-specific instruments Device: fracture fixation with patient specific guides Using the preoperative computed tomography scan, a 3D planning of the fracture Fixation is made and patient-specific guides for fracure fixation are produced using a 3D Printer. These Patient-specific guides are used for fracture fixation (...) : Balgrist University Hospital Collaborator: University of Zurich Information provided by (Responsible Party): Balgrist University Hospital Study Details Study Description Go to Brief Summary: Goal of this study is to evaluate the accuracy of 3D computer-planned fracture fixation with patient-specific instruments for clavicle, upper extremity, lower extremity and pelvis fractures compared with the standard procedure of fracture fixation. Condition or disease Intervention/treatment Phase Fracture

2016 Clinical Trials

169. A Study Utilizing 3D Printing in Patients Undergoing External Beam Radiation Therapy

of conventional bolus preparation can be overcome by using a 3D printer. CT scans of the body can be used to create 3D models for boluses. The 3D models can then be printed into plastic boluses using a 3D printer. Preliminary studies have shown that 3D printed boluses conform to body contours better and allow for more precise control over radiation dose. In this study, both a conventional and 3D printed bolus will be made. The Investigators will then simulate treatment with both boluses to determine which (...) have been shown to create significant reduction in the surface dose. The goal of the present study is to improve the current process of bolus preparation by creating customized boluses with 3D printing. Customized boluses can be designed in Varian eclipse software and then imported into 3D modeling software such as 3D Slicer. The 3D model can then be converted into STL (Stereolithography) format which can be interpreted by the 3D printer software. Several preliminary studies have reported success

2016 Clinical Trials

170. Application of 3D Printing Technique in Small Pulmonary Nodule Localization

was customized based on participant's computed tomography information. Participants received template-guided lung nodule localization. Device: template-guided localization Based on CT data, digital model of the navigational template was created using CAD software and imported to 3D printer. The navigational template serves as a guider to the localizer in lung nodule localization. Outcome Measures Go to Primary Outcome Measures : Accuracy of Lung Nodule Localization [ Time Frame: From the time of completing

2016 Clinical Trials

171. Acquisition of 3D Facial Geometry of Patients' Scheduled for Radiotherapy Treatment

staff using the contact information provided by the sponsor. Please refer to this study by its identifier (NCT number): NCT02930915 Locations Layout table for location information United Kingdom School of Computing Sciences, University of East Anglia Norwich, Norfolk, United Kingdom, NR4 7TJ Norfolk and Norwich Univeristy Hospital NHS foundation Trust Norwich, Norfolk, United Kingdom, NR47UY Sponsors and Collaborators University of East Anglia Clinical Research and Trials Unit (...) . B. Mortimore, D. Emmens, J. Patman, S. C. Short, and G. D. Bell. Towards the production of radiotherapy treatment shells on 3D printers using data derived from DICOM CT and MRI: preclinical feasibility studies. Journal of Radiotherapy in Practice 14, no. 01 (2015): 92-98. Layout table for additonal information Responsible Party: University of East Anglia Identifier: Other Study ID Numbers: 82-03-16 First Posted: October 12, 2016 Last Update Posted: October 12, 2016 Last

2016 Clinical Trials

172. Semi-automated delineation of breast cancer tumors and subsequent materialization using three-dimensional printing (rapid prototyping). (PubMed)

methods-magnetic resonance imaging (MRI), digital breast tomosynthesis (DBT), and 3D ultrasound-were used to capture 3D data for breast cancer tumors. The volumes of the breast tumors were calculated to assess the comparability of the breast tumor models, and the MRI information was used to render models on a commercially available 3D printer to materialize the tumors.The tumor volumes calculated from the different 3D methods appeared to be comparable. Tumor models with volumes between 325 mm3 (...) and 7,770 mm3 were printed and compared with the models rendered from MRI. The materialization of the tumors reflected the computer models of them.3D printing (rapid prototyping) appears to be feasible. Scenarios for the clinical use of the technology might include presenting the model to the surgeon to provide a better understanding of the tumor's spatial characteristics in the breast, in order to improve decision-making in relation to neoadjuvant chemotherapy or surgical approaches. J. Surg. Oncol

2016 Journal of Surgical Oncology

173. ECG of the Week - 26th December 2016 - Interpretation

power supply Printing factors Low ink Print head tracking Paper alignment External factors Electrical interference from other devices - mobile phones, diathermy, computers etc. An awareness of these factors and a systemic approach to addressing each point in the recording process, from patient to printer, is important in addressing recording problems such as artifact and lead malpositioning. References / Further Reading Textbook C han TC, Brady WJ, Harrigan RA, Ornato JP, Rosen P. ECG in Emergency

2016 ECG of the Week blog

174. Three-dimensional assessment of the effects of high-density embolization material on the absorbed dose in the target for Gamma Knife radiosurgery of arteriovenous malformations. (PubMed)

hypothesized that this was partly caused by dosimetric deficiency. The actual dose delivered to the target may be smaller than the intended dose because of increased photon attenuation by high-density embolic materials. The authors performed a phantom-based study to quantitatively evaluate the 3D dosimetric effect of embolic material on GKRS. METHODS A 16-cm-diameter and 12-cm-long cylindrical phantom with a 16-cm-diameter hemispherical dome was printed by a 3D printer. The phantom was filled (...) treatment planning system (version 10.1.1). The plan was created to cover a fictitious AVM target volume near the embolization areas with eleven 8-mm shots and a prescription dose of 20 Gy to 50% isodose level. Dose distributions were computed using both tissue maximum ratio (TMR) 10 and convolution dose-calculation algorithms. These two 3D dose distributions were compared using an in-house program. Additionally, the same analysis method was applied to evaluate the dosimetric effects for 2 patients

2016 Journal of Neurosurgery

175. Three-dimensional printed final occlusal splint for orthognathic surgery: design and validation. (PubMed)

Three-dimensional printed final occlusal splint for orthognathic surgery: design and validation. Orthognathic surgery is indicated for the treatment of significant skeletal malocclusion and is normally prepared using conventional face bows combined with two-dimensional cephalometric analysis and manually made splints. With recent developments in oral imaging, more orthognathic surgeries are being planned using three-dimensional computer-aided design and manufacturing (3D CAD/CAM) software (...) . The purpose of this study was to present a protocol for the design and 3D printing of final digital occlusal splints based on 3D planning of orthognathic surgery and to validate the accuracy of these splints. The 3D virtual planning was performed in PROPLAN software (Materialise). The required data were then exported into 3-matic software (Materialise) to design the splints, which were 3D printed in biocompatible material using an Objet Connex 350 printer (Stratasys). To validate the accuracy

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2016 International Journal of Oral and Maxillofacial Surgery

176. Low-grade inflammation and the brain

of the species or to maintain sustenance without being injured or killed in the process. In an evolutionary sense, it is also logical that various systems could have multiple functions and work synergistically with other systems – a multifunction printer on your desktop compared to four separate devices. Compromise has its advantages and disadvantages. Part of our defence mechanism is the immune system against disease and our damage repair system required following injury. Both have components requiring (...) ) suggest the term neurogenic neuroinflammation for use specifically in relation to the topic under discussion: “In summary, the elaborated inflammatory response repertoire of CNS tissue may not only be used to deal with infectious, toxic or degenerative processes but also to cope with the demands of increased levels of neuronal activity and to enhance the computational power of neuronal networks in the CNS. However, neurogenic neuroinflammation may become maladaptive and aggravate clinical conditions

2016 Body in Mind blog

177. 3D-printed pediatric endoscopic ear surgery simulator for surgical training. (PubMed)

, fabricate, and test a low-cost and reusable 3D-printed TEES simulator.The TEES simulator was designed in computer-aided design (CAD) software using anatomic measurements taken from anthropometric studies. Cross sections from external auditory canal samples were traced as vectors and serially combined into a mesh construct. A modified tympanic cavity with a modular testing platform for simulator tasks was incorporated. Components were fabricated using calcium sulfate hemihydrate powder and multiple (...) is feasible for TEES simulation. Otolaryngology training programs with access to a 3D printer may readily fabricate a TEES simulator, resulting in inexpensive yet high-fidelity surgical simulation.Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

2016 International Journal of Pediatric Otorhinolaryngology

178. 6 medical breakdowns in my mother’s care. And 1 close call.

the effects of dehydration. I immediately went to the nurse’s station and demanded to know how much fluid Mom had received in the past three days. The nurse wrestled with the computer for forty minutes to get the information (aren’t EHRs great?). After another forty minutes waiting for the nurse to get the printer working, I insisted on seeing the computer itself. Thirteen ounces. My mother had gotten thirteen ounces of fluid in three days. That amounts to a can of soda. Medical breakdown #6: Where do I (...) at this hospital were more interested in punching their time clock than they were in building relationships with patients, but given their highly regulated work environment, I can hardly blame them. I spoke with the doctors about my mother’s medication adjustment and requested an x-ray of her hand, which was bruised and swollen (battle scar from her fight with the ER nurse). It took three days for them to get the x-ray. I was told that this delay was due to a problem with the computer order reaching radiology

2016 KevinMD blog

179. It’s time for hospital CEOs to listen to lectures from doctors and nurses

the right printer. I recently worked at a site with a shiny new nationally known EMR. “Please call the hospitalist,” says I to the secretary. “Alright. Will you enter the consult order in the computer so I can document it?” I’ve been handed faxes to fill out myself and of course, nothing gets done until it’s put in the computer. Another rant for another day, as I digress. The physicians rarely look up from their keyboards to chat, except when running off to see the patients who inconveniently stand (...) It’s time for hospital CEOs to listen to lectures from doctors and nurses It's time for hospital CEOs to listen to lectures from doctors and nurses It’s time for hospital CEOs to listen to lectures from doctors and nurses | | March 15, 2016 41K Shares I was working in a hospital recently and saw a note from a CEO on the computer. Notes and memos are ubiquitous these days. Bathroom walls, break-rooms, computer screens. Everywhere there is another reminder to check this, do that, mark those

2016 KevinMD blog

180. Radiopaque Three-dimensional Printing: A Method to Create Realistic CT Phantoms. (PubMed)

, reproduction of patient anatomy was tested by printing computed tomographic (CT) images of a real patient abdomen scan. In a second step, gray scales, iodine deposition, and Hounsfield units were investigated by printing geometric phantoms with gray scales ranging from 0% (white) to 100% (black). On the basis of these results, a gray-scale-correction procedure was developed to achieve realistic Hounsfield units in the patient phantom. In a third step, reproduction of the real patient's Hounsfield units (...) template gray scales and printer deposition. Application of a correction procedure to the template gray scales allowed for a linear correlation (r = 0.9946; 95% confidence interval: 0.9916, 0.9966). After the same correction procedure was applied to the abdomen phantom, linear correlation of phantom and patient Hounsfield units was confirmed (r = 0.9925; 95% confidence interval: 0.9635, 0.9985). Conclusion The method presented in this work can realize realistic and customizable phantoms for diagnostic

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2016 Radiology

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