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1. Development of an organ‐specific insert phantom generated using a 3D printer for investigations of cardiac computed tomography protocols (Full text)

Development of an organ‐specific insert phantom generated using a 3D printer for investigations of cardiac computed tomography protocols An ideal organ-specific insert phantom should be able to simulate the anatomical features with appropriate appearances in the resultant computed tomography (CT) images. This study investigated a 3D printing technology to develop a novel and cost-effective cardiac insert phantom derived from volumetric CT image datasets of anthropomorphic chest (...) phantom.Cardiac insert volumes were segmented from CT image datasets, derived from an anthropomorphic chest phantom of Lungman N-01 (Kyoto Kagaku, Japan). These segmented datasets were converted to a virtual 3D-isosurface of heart-shaped shell, while two other removable inserts were included using computer-aided design (CAD) software program. This newly designed cardiac insert phantom was later printed by using a fused deposition modelling (FDM) process via a Creatbot DM Plus 3D printer. Then, several

2018 Journal of medical radiation sciences PubMed

2. Computer Printer

Computer Printer Computer Printer Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Computer Printer Computer Printer Aka: Computer (...) maintenance kit) Vertical lines on page Laser toner cartridge issue (replace toner cartridge) Inkjet rollers have loose ink (clean the ink bottles, rollers) Nonsense characters are printed Printer driver dysfunction (confirm correct printer driver version and reinstall, update or rollback driver) Connection problem (cable or port) Try printing via direct connection from another computer (confirms a non-printer issue) Wrong print color Color Toner low or empty Ink Cartridge low, empty or clogged print

2018 FP Notebook

3. Computer Printer

Computer Printer Computer Printer Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Computer Printer Computer Printer Aka: Computer (...) maintenance kit) Vertical lines on page Laser toner cartridge issue (replace toner cartridge) Inkjet rollers have loose ink (clean the ink bottles, rollers) Nonsense characters are printed Printer driver dysfunction (confirm correct printer driver version and reinstall, update or rollback driver) Connection problem (cable or port) Try printing via direct connection from another computer (confirms a non-printer issue) Wrong print color Color Toner low or empty Ink Cartridge low, empty or clogged print

2017 FP Notebook

4. Dimensional Error in Rapid Prototyping with Open Source Software and Low-cost 3D-printer (Full text)

. This article aims to determine the dimensional error of a low-cost fused deposition modeling 3D printer (Tronxy P802MA, Shenzhen, Tronxy Technology Co), with Open source software. An ordinary dry human mandible was scanned with a computed tomography device. The data were processed with open software to build a rapid prototype with a fused deposition machine. Linear measurements were performed to find the mean absolute and relative difference. The mean absolute and relative difference was 0.65 mm and 1.96 (...) Dimensional Error in Rapid Prototyping with Open Source Software and Low-cost 3D-printer Rapid prototyping models (RPMs) had been extensively used in craniofacial and maxillofacial surgery, especially in areas such as orthognathic surgery, posttraumatic or oncological reconstructions, and implantology. Economic limitations are higher in developing countries such as Mexico, where resources dedicated to health care are limited, therefore limiting the use of RPM to few selected centers

2018 Plastic and Reconstructive Surgery Global Open PubMed

5. Creating Physical Objects With 3D Printers to Stimulate Reminiscing for Memory Loss [2 R44 AG049548-02A1]

Creating Physical Objects With 3D Printers to Stimulate Reminiscing for Memory Loss [2 R44 AG049548-02A1] Creating Physical Objects With 3D Printers to Stimulate Reminiscing for Memory Loss [2 R44 AG049548-02A1] - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100 (...) ). Please remove one or more studies before adding more. Creating Physical Objects With 3D Printers to Stimulate Reminiscing for Memory Loss [2 R44 AG049548-02A1] The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. of clinical studies and talk to your health care provider before participating. Read our for details. ClinicalTrials.gov Identifier: NCT03625973

2018 Clinical Trials

6. Use of low‐cost three‐dimensional printer to simulate grasping of bronchial foreign body (Full text)

Use of low‐cost three‐dimensional printer to simulate grasping of bronchial foreign body An 89-year-old man was hospitalized with severe pneumonia. Chest computed tomography showed a foreign body in the left main bronchus. We moulded a three-dimensional (3D) model of the foreign body with a low-cost 3D printer and found it had the shape of a tooth. We simulated grasping the model with several forceps and succeeded in grasping it with a retrieval net and shark-tooth forceps. Bronchoscopy (...) printer.

2018 Respirology case reports PubMed

7. Construction of realistic phantoms from patient images and a commercial three-dimensional printer (Full text)

Construction of realistic phantoms from patient images and a commercial three-dimensional printer The purpose of this study was to use three-dimensional (3-D) printing techniques to construct liver and brain phantoms having realistic pathologies, anatomic structures, and heterogeneous backgrounds. Patient liver and head computed tomography (CT) images were segmented into tissue, vessels, liver lesion, white and gray matter, and cerebrospinal fluid (CSF). Stereolithography files of each object (...) were created and imported into a commercial 3-D printer. Printing materials were assigned to each object after test scans, which showed that the printing materials had CT numbers ranging from 70 to 121 HU at 120 kV. Printed phantoms were scanned on a CT scanner and images were evaluated. CT images of the liver phantom had measured CT numbers of 77.8 and 96.6 HU for the lesion and background, and 137.5 to 428.4 HU for the vessels channels, which were filled with iodine solutions. The difference

2016 Journal of Medical Imaging PubMed

8. Experimental Validation of Plastic Mandible Models Produced by a “Low-Cost” 3-Dimensional Fused Deposition Modeling Printer (Full text)

Experimental Validation of Plastic Mandible Models Produced by a “Low-Cost” 3-Dimensional Fused Deposition Modeling Printer The objective of this study was to investigate the accuracy of 3-dimensional (3D) plastic (ABS) models generated using a low-cost 3D fused deposition modelling printer.Two human dry mandibles were scanned with a cone beam computed tomography (CBCT) Accuitomo device. Preprocessing consisted of 3D reconstruction with Maxilim software and STL file repair with Netfabb (...) software. Then, the data were used to print 2 plastic replicas with a low-cost 3D fused deposition modeling printer (Up plus 2®). Two independent observers performed the identification of 26 anatomic landmarks on the 4 mandibles (2 dry and 2 replicas) with a 3D measuring arm. Each observer repeated the identifications 20 times. The comparison between the dry and plastic mandibles was based on 13 distances: 8 distances less than 12 mm and 5 distances greater than 12 mm.The mean absolute difference (MAD

2016 Medical science monitor : international medical journal of experimental and clinical research PubMed

9. Developing an Ear Prosthesis Fabricated in Polyvinylidene Fluoride by a 3D Printer with Sensory Intrinsic Properties of Pressure and Temperature (Full text)

Developing an Ear Prosthesis Fabricated in Polyvinylidene Fluoride by a 3D Printer with Sensory Intrinsic Properties of Pressure and Temperature An ear prosthesis was designed in 3D computer graphics software and fabricated using a 3D printing process of polyvinylidene fluoride (PVDF) for use as a hearing aid. In addition, the prosthesis response to pressure and temperature was observed. Pyroelectric and piezoelectric properties of this ear prosthesis were investigated using an astable

2016 Sensors (Basel, Switzerland) PubMed

10. Use of a 3D Printer to Make Custom Sleep Masks for Positive Airway Pressure Treatment

to construct an NIV mask model using computer design software that will then be created by using a 3D printer. Study Design Go to Layout table for study information Study Type : Interventional (Clinical Trial) Estimated Enrollment : 20 participants Intervention Model: Single Group Assignment Masking: None (Open Label) Primary Purpose: Treatment Official Title: Custom 3-D Printed Noninvasive Ventilation Mask Study Start Date : August 2016 Estimated Primary Completion Date : December 31, 2018 Estimated Study (...) Use of a 3D Printer to Make Custom Sleep Masks for Positive Airway Pressure Treatment Use of a 3D Printer to Make Custom Sleep Masks for Positive Airway Pressure Treatment - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before

2016 Clinical Trials

11. The Use of Three-Dimensional Printers for Partial Adrenalectomy: Estimating the Resection Limits. (PubMed)

The Use of Three-Dimensional Printers for Partial Adrenalectomy: Estimating the Resection Limits. To avoid hormonal replacement after partial adrenalectomy (PA), establishing the precise limit of an adrenal gland resection is essential. Herein, we evaluated the use of three-dimensional (3D) adrenal gland printing and volumetry measurement before PA to improve the determination of the remnant gland volume.Concomitant total adrenalectomy and a contralateral PA were performed in a patient (...) with primary macronodular adrenal hyperplasia that exhibited mild hypercortisolism, arterial hypertension, and diabetes. Before surgery, a 3D replica of the adrenal gland to be partially resected was printed and given to the surgeon. The volumetry of the gland was measured by computed tomography 3D image reconstruction.No postoperative complications were noted. Immediately after the surgery, the patient initiated corticosteroid replacement, which was interrupted 52 days later. At the 6-month follow-up

2016 Urology

12. Computer-aided Design/Computer-aided Manufacturing-guided Endodontic Surgery: Guided Osteotomy and Apex Localization in a Mandibular Molar with a Thick Buccal Bone Plate. (PubMed)

surgical planning software, the data were superimposed. In the superimposed model, an anchor pin was designed to target the mesial root apex of tooth 19. The surgical template was then printed using a 3-dimensional printer. Endodontic microsurgery included application of this printed surgical template. A computer-aided design/computer-aided manufacturing (CAD/CAM)-guided surgical template minimized the extent of osteotomy and enabled precise targeting of the apex in this case. There were (...) Computer-aided Design/Computer-aided Manufacturing-guided Endodontic Surgery: Guided Osteotomy and Apex Localization in a Mandibular Molar with a Thick Buccal Bone Plate. A mandibular molar with a thick buccal bone plate is a challenging problem in endodontic surgery despite the increase in the success rate of endodontic surgery nowadays. This report describes the application of a surgical template to guide osteotomy and facilitate apex localization in a mandibular molar with a thick buccal

2018 Journal of Endodontics

13. The feasibility of producing patient-specific acrylic cranioplasty implants with a low-cost 3D printer. (Full text)

3D printer for the purpose of producing patient-specific acrylic cranioplasty implants. METHODS Using data from a high-resolution brain CT scan of a patient with a calvarial defect posthemicraniectomy, a skull phantom and a mold were generated with computer software and fabricated with the 3D printer using the fused deposition modeling method. The mold was used as a template to shape the acrylic implant, which was formed via a polymerization reaction. The resulting implant was fitted to the skull (...) The feasibility of producing patient-specific acrylic cranioplasty implants with a low-cost 3D printer. OBJECT Commercially available, preformed patient-specific cranioplasty implants are anatomically accurate but costly. Acrylic bone cement is a commonly used alternative. However, the manual shaping of the bone cement is difficult and may not lead to a satisfactory implant in some cases. The object of this study was to determine the feasibility of fabricating molds using a commercial low-cost

2015 Journal of Neurosurgery PubMed

14. 3D-printer visualization of neuron models (Full text)

3D-printer visualization of neuron models Neurons come in a wide variety of shapes and sizes. In a quest to understand this neuronal diversity, researchers have three-dimensionally traced tens of thousands of neurons; many of these tracings are freely available through online repositories like NeuroMorpho.Org and ModelDB. Tracings can be visualized on the computer screen, used for statistical analysis of the properties of different cell types, used to simulate neuronal behavior, and more. We

2015 Frontiers in neuroinformatics PubMed

15. Individualized Physical 3-dimensional Kidney Tumor Models Constructed From 3-dimensional Printers Result in Improved Trainee Anatomic Understanding. (PubMed)

Individualized Physical 3-dimensional Kidney Tumor Models Constructed From 3-dimensional Printers Result in Improved Trainee Anatomic Understanding. To evaluate the effect of 3-dimensionally (3D) printed physical renal models with enhancing masses on medical trainee characterization, localization, and understanding of renal malignancy.Proprietary software was used to import standard computed tomography (CT) cross-sectional imaging into 3D printers to create physical models of renal units

2015 Urology

16. Three-dimensional printing of facial contour based on preoperative computer simulation and its clinical application. (PubMed)

) or computed tomography imaging (CTI) data were reconstructed into a 3D model by Mimics software. PCS was performed by simulating the changes in bone and soft tissue. The stimulating volume change was calculated by Boolean operations. Finally, the virtual model was exported into 3D printer to produce physical templates to guide surgical plan. PCS and actual postoperative results were compared using objective rating scales and by cephalometrical measurements.With the direct guidance of PCS and 3D templates (...) Three-dimensional printing of facial contour based on preoperative computer simulation and its clinical application. Facial contouring is a complex procedure performed to alter tissue contents and restore facial appearance. However, it is difficult to measure the amount of the tissue volume that is needed. This study demonstrated the use of preoperative computer simulation (PCS) and 3-dimensional (3D) printing in contouring procedure to maximize outcomes.Three-dimensional surface imaging (3DSI

2019 Medicine

17. Right cot, right place, right time: improving the design and organisation of neonatal care networks ? a computer simulation study

Right cot, right place, right time: improving the design and organisation of neonatal care networks ? a computer simulation study Right cot, right place, right time: improving the design and organisation of neonatal care networks – a computer simulation study Right cot, right place, right time: improving the design and organisation of neonatal care networks – a computer simulation study Allen M, Spencer A, Gibson A, Matthews J, Allwood A, Prosser S, Pitt M Record Status This is a bibliographic (...) record of a published health technology assessment from a member of INAHTA. No evaluation of the quality of this assessment has been made for the HTA database. Citation Allen M, Spencer A, Gibson A, Matthews J, Allwood A, Prosser S, Pitt M. Right cot, right place, right time: improving the design and organisation of neonatal care networks – a computer simulation study. Health Services and Delivery Research 2015; 3(20) Authors' objectives To develop a computer model that could mimic the performance

2015 Health Technology Assessment (HTA) Database.

18. Assessment of a Novel Computer Algorithm for Printing a 3-Dimensional Nasal Prosthetic. (PubMed)

Assessment of a Novel Computer Algorithm for Printing a 3-Dimensional Nasal Prosthetic. The introduction and evaluation of a novel technique to create nasal prostheses with 3-dimensional (3-D) imaging software may circumvent the need for an anaplastologist.To describe a novel computer algorithm for the creation of a 3-D model of a nose and to evaluate the similarity of appearance of the nasal prosthesis with that of the individual's nose.A prospective pilot study with a cross-sectional survey (...) was conducted from August 1 to October 31, 2016, at a tertiary care academic center. Five volunteers were used for creation of the nasal prostheses, and 36 survey respondents with a medical background were involved in evaluating the nasal prostheses.A computer algorithm using a 3-D animation software (Blender; Blender Foundation) and Adobe Photoshop CS6 (Adobe Systems) were used to create a 3-D model of a nose. Photographs of 5 volunteers were processed with the computer algorithm. The model

2018 JAMA otolaryngology-- head & neck surgery

19. Computer Guided Lag Screw Fixation Versus Conventional Lag Screw Fixation in Anterior Mandibular Fractures

screw fixation). A- Computer guided lag screw fixation group: Pre operative Computed tomography will be done for the patient. Computed tomography data will be imported into Computer aided surgical simulation software. Utilizing Computer aided surgical simulation software the fracture segments are virtually reduced and patient specific surgical guide is designed and sent to three dimension printer before operation. Intra operative: All cases will undergo surgery under general anaesthesia. Exposure (...) Computer Guided Lag Screw Fixation Versus Conventional Lag Screw Fixation in Anterior Mandibular Fractures Computer Guided Lag Screw Fixation Versus Conventional Lag Screw Fixation in Anterior Mandibular Fractures - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100

2018 Clinical Trials

20. New Technique for Developing a Proton Range Compensator With Use of a 3-Dimensional Printer. (PubMed)

New Technique for Developing a Proton Range Compensator With Use of a 3-Dimensional Printer. A new system for manufacturing a proton range compensator (RC) was developed by using a 3-dimensional printer (3DP). The physical accuracy and dosimetric characteristics of the new RC manufactured by 3DP (RC_3DP) were compared with those of a conventional RC (RC_CMM) manufactured by a computerized milling machine (CMM).An RC for brain tumor treatment with a scattered proton beam was calculated (...) of distal dose falloff at the central axis and field width of the dose profile at the midline depth of spread-out Bragg peak were measured for the 2 RCs to evaluate their dosimetric characteristics. Both RCs were imaged on a computed tomography scanner to evaluate uniformity of internal density. The manufacturing times for both RCs were compared to evaluate the production efficiency.The pass rates for the CA test were 99.5% and 92.5% for RC_3DP and RC_CMM, respectively. There was no significant

2013 Biology and Physics

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