Re: Cassava flour slurry as a low-cost alternative to commercially available gel for obstetrical ultrasound: a blinded non-inferiority trial comparison of image quality

2018 ◽  
Vol 125 (9) ◽  
pp. 1197-1198 ◽  
Author(s):  
Saumya Pandey ◽  
Kshitiz Murdia
Keyword(s):  
Image Quality ◽  
Low Cost ◽  
Cassava Flour ◽  
Obstetrical Ultrasound ◽  
Flour Slurry

scholarly journals Use of artisanal simulators in the ultrasound training for invasive procedures in nephrology: venous access and renal biopsy

2019 ◽  
Vol 41 (3) ◽  
pp. 423-426
Author(s):  
Marcus Gomes Bastos ◽  
Ramon de Oliveira Dalamura ◽  
Ana Luisa Silveira Vieira ◽  
José Pazeli Jr.
Keyword(s):  
Image Quality ◽  
Renal Biopsy ◽  
Low Cost ◽  
Venous Access ◽  
Chicken Breast ◽  
Invasive Procedures ◽  
Anatomical Structures ◽  
Pig Kidney ◽  
Hand Eye Coordination ◽  
Biopsy Methods

ABSTRACT Introduction: Vascular access and renal biopsy are common procedures in nephrology. In this study, two artisanal simulators of very low cost and excelent image quality are (prented) presented to guide, by ultrasound, the venous access and renal biopsy. Methods: The simulators are constructed using chicken breast slices, Penrose drain, plastic milk shake straw and pig kidney. Results: Both simulators enable immediate identification of the anatomical structures of interest, vessels and kidney, and enable spatial orientation and hand-eye coordination, essential for the development of the necessary skills to safely carry out invasive procedures. Conclusion: The simulators described, were extremely useful for simulating venous access and renal biopsy guided by ultrasonography, enabling training to reduce the failure rate in punctures and the potential complications associated with the described procedures.

scholarly journals Smartphone-based low-cost microscope with monolithic focusing mechanism

2018 ◽  
Vol 4 (1) ◽  
pp. 267-270
Author(s):  
Max B. Schäfer ◽  
David Reichert ◽  
Kent Stewart ◽  
Alois M. Herkommer ◽  
Carsten Reichert ◽  
...  
Keyword(s):  
Image Quality ◽  
Injection Molding ◽  
Low Cost ◽  
Functional Integration ◽  
High Order ◽  
Number Of Components

AbstractMicroscopy enables fast and effective diagnostics. However, its functionality is not accessible to everyone. Smartphone-based low-cost microscopes could be a powerful tool for diagnostics and educational purposes. Current smartphone-based microscopy approaches struggle with high cost, poor image quality and/or insufficient smartphone compatibility. In this paper, a very feasible and effective lowcost microscope is presented which addresses these issues. To minimize cost, a monolithic foldable structure is designed for production by injection molding. The design has a high order of functional integration, minimizing the number of components, while still enabling a micrometer focusing accuracy.

scholarly journals P1.03-021 Initial Results from A Novel and Low Cost Method For Measuring CT Image Quality

2017 ◽  
Vol 12 (1) ◽  
pp. S554-S555
Author(s):  
Ricardo Avila ◽  
David Yankelevitz ◽  
Rowena Yip ◽  
Claudia Henschke
Keyword(s):  
Image Quality ◽  
Low Cost ◽  
Ct Image ◽  
Ct Image Quality ◽  
Initial Results

High-Definition Video System for Peripheral Neurorrhaphy in Rats

2017 ◽  
Vol 24 (4) ◽  
pp. 369-372 ◽  
Author(s):  
Rui Sergio Monteiro de Barros ◽  
Marcus Vinicius Henriques Brito ◽  
Renan Kleber Costa Teixeira ◽  
Vitor Nagai Yamaki ◽  
Felipe Lobato da Silva Costa ◽  
...  
Keyword(s):  
Image Quality ◽  
Wistar Rats ◽  
Low Cost ◽  
High Definition ◽  
Surgical Time ◽  
Video System ◽  
Image Magnification ◽  
High Definition Video ◽  
Video Assisted ◽  
Video Systems

Background: Although all microsurgeries are based on the use of surgical microscopes, several alternative magnification systems have shown promising results. Improvements in image quality facilitated the use of video systems in microsurgeries with safety and accuracy. The aim of this study was to evaluate the use of a low-cost, video-assisted magnification system in peripheral neurorrhaphy in rats. Methods: Twenty Wistar rats were randomly divided into 2 matched groups according to the magnification system used: the microscope group, with neurorrhaphy performed under a microscope with an image magnification of 40×; and the video system group, with the procedures performed under a video system composed of a high-definition Sony camcorder DCR-SR42 set to 52× magnification, macro lenses, 42-inch television, and a digital HDMI cable. We analyzed weight, nerve caliber, total surgery time, neurorrhaphy time, number of stitches, and number of axons in both ends (proximal and distal). Results: There were no significant differences between groups in weight, nerve caliber, or number of stitches. Neurorrhaphy under the video system took longer (video: 5.60 minutes; microscope: 3.20 minutes; P < .05). Number of axons was similar between groups, both in proximal and distal stumps. Conclusion: It is possible to perform a peripheral neurorrhaphy in rats through video system magnification, but with a longer surgical time.

scholarly journals Design and System Evaluation of a Dual-Panel Portable PET (DP-PET)

2021 ◽  
Author(s):  
Tianyi Zeng ◽  
Jiaxu Zheng ◽  
Xinyuan Xia ◽  
Xin Chen ◽  
Beien Wang ◽  
...  
Keyword(s):  
Image Quality ◽  
Low Cost ◽  
High Sensitivity ◽  
Whole Body ◽  
Reconstruction Method ◽  
Digital Readout ◽  
Battery Power ◽  
Measurement Results ◽  
Pet Reconstruction ◽  
Initial Results

Abstract Background: Integrated whole-body PET/MR technology continues to mature and is now extensively used in clinical setting. However, due to the special design architecture, integrated whole-body PET/MR comes with a few inherent limitations. Firstly, whole-body PET/MR lacks sensitivity and resolution for focused organs. Secondly, boarder clinical access of integrated PET/MR has been significantly restricted due to its prohibitively high cost. The MR-compatible PET insert is a low cost and flexible PET scanner which can be placed within an MRI bore. However, mobility and configurability of all existing MR-compatible PET insert prototypes remain limited. Methods: An MR-compatible portable PET insert prototype, Dual-panel Portable PET (DP-PET), has been developed for simultaneous PET/MR imaging. Using SiPM, digital readout electronics, novel carbon fiber shielding, phase-change cooling and MRI compatible battery power, DP-PET was designed to achieve high-sensitivity and high-resolution with compatibility with a clinical 3T MRI scanner. A GPU-based reconstruction method with Resolution Modelling (RM) has been developed for the DP-PET reconstruction. We evaluated the system performance on PET resolution, sensitivity, image quality and the PET/MR interference. Results: Initial results reveal that the DP-PET prototype worked as expected in the MRI bore and caused minimal compromise to the MRI image quality. The PET performance was measured to show a spatial resolution <= 2mm (parallel to the detector panels), maximum sensitivity =3.6% at the center of FOV and energy resolution = 12.43%. MRI pulsing introduces less than 1% variation to the PET performance measurement results. Conclusions: We developed a MR-compatible PET insert prototype and performed several studies to begin to characterize the performance of the proposed DP-PET.The results showed that the proposed DP-PET performed well in the MRI bore and would cause little influence on the MRI images. The Derenzo phantom test showed that the proposed reconstruction method could obtained high quality images using DP-PET.

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