Inexpensive, realtime tele-ultrasound using a commercial, web-based video streaming device

2012 ◽  
Vol 18 (4) ◽  
pp. 185-188 ◽  
Author(s):  
Yannis M Paulus ◽  
Noel P Thompson
Keyword(s):  
Image Quality ◽  
Video Streaming ◽  
Delay Time ◽  
Qualitative Assessment ◽  
Web Based ◽  
Grey Scale ◽  
Standard Resolution ◽  
Ultrasound System

We have devised an inexpensive, web-based tele-ultrasound system using commercially-available video streaming equipment. We examined the spatial and grey scale resolution, and the delay time of the system. The receiving PC was tested at various distances from the transmitting site, from 3.2 km to 4828 km. Standard resolution targets and echocardiography movie strips recorded on DVDs were used to assess the image quality. A qualitative assessment was made by an expert sonographer. As the distance between the transmitter and the receiver increased, the scan smoothness decreased and the delay increased. At a distance of 3.2 km the delay was 2–3 s, and at 4828 km it was 10–15 s. The delay was short enough to allow realtime guidance of the scanning technician by telephone. The system allows inexpensive, readily available, realtime tele-ultrasonography.

Effect of different contrast administration protocols on contrast enhancement and image quality in CT scan

2019 ◽  
Author(s):  
Noor Ruhaya Ibrahim ◽  
Noor Khairiah A. Karim ◽  
Ibrahim Lutfi Shuaib ◽  
Noor Diyana Osman ◽  
Salwah Hashim ◽  
...  
Keyword(s):  
Image Quality ◽  
Contrast Enhancement ◽  
Hounsfield Unit ◽  
Fixed Time ◽  
Qualitative Assessment ◽  
Contrast Administration ◽  
Contrast Volume ◽  
Significant Difference ◽  
Group A ◽  
Group B

Abstract Objective The aim of this study is to compare the effect of different contrast administration protocols practiced in Advanced Medical and Dental Institute, Universiti Sains Malaysia (Group A) and Hospital Pulau Pinang, Malaysia (Group B), on contrast enhancement and image quality in computed tomography scan. The two protocols were fixed time delay (FTD) with fixed volume (FV), and automatic bolus tracking (ABT) with weight based volume (WBV) contrast administration. Quantification of contrast enhancement’s magnitude in four different anatomical structures was measured in Hounsfield Unit (HU) and based on 5-point scale (1=poor, 5=excellent), the images were rated qualitatively.Results Mean enhancement values of all structures in Group B was higher compared to Group A (p = < 0.001). Mean of quality rating between the two groups was statistically not significant (p = 0.185). There was a weak correlation between HU values and administered contrast volume (r = 0.152). It can be concluded that FTD with FV protocol is non inferior to ABT with WBV protocol as it yielded higher degree of contrast enhancement. There was no significant difference between the two protocols in term of qualitative assessment although ABT with WBV protocol had higher mean grading in image quality.

scholarly journals EchoScopy in scanning abdominal diseases; a prospective single center study

2019 ◽  
Vol 21 (1) ◽  
pp. 8 ◽  
Author(s):  
Ana Paula Barreiros ◽  
Yi Dong ◽  
Andre Ignee ◽  
Daniel Wastl ◽  
Christoph F. Dietrich
Keyword(s):  
Image Quality ◽  
Handheld Devices ◽  
Focal Lesion ◽  
European Federation ◽  
Pathological Findings ◽  
Focal Lesions ◽  
Handheld Ultrasound ◽  
Ultrasound System ◽  
Dual Probe

Background and aims: The introduction of a new type of small handheld ultrasound device brings greater portability and affordability in a different setting. The basic ultrasound approach with these handheld devices has been defined by European Federation of Societies of Ultrasound in Medicine and Biology (EFSUMB) as “EchoScopy”. The current study aimed to assess the image quality, indications and limitations of a portable pocket “EchoScopy” performed first compared with a high-end ultrasound system (second) in abdominal diseases.Material and methods: Three hundred consecutive patients (158 males and 142 females, age 55±19 [18-96]) years) were included. The ultrasound examinations were performed firstly by an EchoScope (Vscan™ Dual Probe) and secondly with a high-end ultrasound system (HEUS, GE Logiq E9). Compared with the always excellent image quality using HEUS, the image quality of the EchoScope was graded as good, sufficient or non-sufficient.Results: Out of all 300 patients, 221 had focal lesions, 31 patients were found with diffuse pathological findings, 20 with ascites, 25 after liver puncture and 45 without any pathological findings. The image quality of the pocket device was considered as being good or sufficient to delineate the pathology in 265/300 (88%). The detection rate of the EchoScope for abdominal focal lesion was 172/221 (78%). The higher frequency of the Dual Probe was helpful in 35/300 (12%).Conclusions: EchoScopy has proven to display sufficient image quality to answer specific questions, e.g., detection of ascites, splenomegaly, bile duct enlargement, hydronephrosis and other pathological findings which can be judged by “yes/no”.

scholarly journals Sistem Pemantauan Ruangan Laboratorium Dengan Raspberry Pi Camera

ELECTRICES ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 11-16
Author(s):  
Donalson Libertin
Keyword(s):  
Video Streaming ◽  
Monitoring System ◽  
Electrical Engineering ◽  
Raspberry Pi ◽  
Actual Situation ◽  
Web Based ◽  
Google Drive ◽  
The Web

In the Electrical Engineering Laboratory 2nd Floor room, there is a variety of equipment, but the equipment is often lost. So the room needed a monitoring system to see the activity in the room to minimize theft. The purpose of this study is to design a monitoring system using Raspberry Pi Zero W as a link between the Raspberry Pi Camera and the admin. Room conditions can be monitored online and in realtime on the Web. Based on the results of testing video streaming displayed on the Web, there is a delay of 3-4 seconds so that the image moves slower than the actual situation. This device can send a notification of the condition of the room and pictures at 12: 00-13: 00 when there is movement or someone doing activities in the room. Data is sent via email and google drive @sctolipnj.

scholarly journals Design and Development of Web Based Embedded Robot for Safety and Security Applications

2021 ◽  
Vol 23 (07) ◽  
pp. 543-549
Author(s):  
Dr. Subodh Kumar Panda ◽  
◽  
M Harshita ◽  
Nishmitha A R ◽  
Priyanka P ◽  
...  
Keyword(s):  
Embedded System ◽  
Video Streaming ◽  
Local System ◽  
Design And Development ◽  
Web Based ◽  
Gas Leakage ◽  
Remote System ◽  
Compact Design ◽  
Fire Accidents ◽  
Audio Video

This paper proposes the design and development of an embedded system with a robot for safety and security application using wifi communication and the webserver. This compact design has a robot along with various peripherals and sensors for detecting hazardous gas leakage and performs necessary control actions like an alarm for fire accidents, intruder detection, and sends alert messages to the local system. The robot can extinguish the fire and monitors the area inside the industry and passes the audio-video streaming to the local system. This robot also has a battery-powered wireless AV camera which provides robotic in-front environment information to the local and remote system and performs the audio and video streaming through a web server.

scholarly journals Non-rigid image registration of 4D-MRI data for improved delineation of moving tumors 

2020 ◽  
Author(s):  
Stefan Weick ◽  
Kathrin Breuer ◽  
Anne Richter ◽  
Florian Exner ◽  
Serge-Peer Ströhle ◽  
...  
Keyword(s):  
Image Quality ◽  
Image Registration ◽  
Coefficient Of Variation ◽  
Regions Of Interest ◽  
Qualitative Assessment ◽  
Data Sets ◽  
Target Delineation ◽  
Tumor Delineation ◽  
4D Mri

Abstract Background: To increase the image quality of end-expiratory and end-inspiratory phases of retrospective respiratory self-gated 4D MRI data sets using non-rigid image registration for improved target delineation of moving tumors.Methods: End-expiratory and end-inspiratory phases of volunteer and patient 4D MRI data sets are used as targets for non-rigid image registration of all other phases using two different registration schemes: In the first, all phases are registered directly (dir-Reg) while next neighbors are successively registered until the target is reached in the second (nn-Reg). Resulting data sets are quantitatively compared using diaphragm and tumor sharpness and the coefficient of variation of regions of interest in the lung, liver, and heart. Qualitative assessment of the patient data regarding noise level, tumor delineation, and overall image quality was performed by blinded reading based on a 4 point Likert scale.Results: The median coefficient of variation was lower for both registration schemes compared to the target. Median dir-Reg coefficient of variation of all ROIs was 5.6 % lower for expiration and 7.0 % lower for inspiration compared with nn-Reg. Statistical significant differences between the two schemes were found in all comparisons. Median sharpness in inspiration is lower compared to expiration sharpness in all cases. Registered data sets were rated better compared to the targets in all categories. Over all categories, mean expiration scores were 2.92 ± 0.18 for the target, 3.19 ± 0.22 for nn-Reg and 3.56 ± 0.14 for dir-Reg and mean inspiration scores 2.25 ± 0.12 for the target, 2.72 ± 215 0.04 for nn-Reg and 3.78 ± 0.04 for dir-Reg.Conclusions: In this work, end-expiratory and inspiratory phases of a 4D MRI data sets are used as targets for non-rigid image registration of all other phases. It is qualitatively and quantitatively shown that image quality of the targets can be significantly enhanced leading to improved target delineation of moving tumors.

scholarly journals Web-based psychometric evaluation of image quality

2009 ◽  
Author(s):  
Iris Sprow ◽  
Zofia Baranczuk ◽  
Tobias Stamm ◽  
Peter Zolliker
Keyword(s):  
Image Quality ◽  
Psychometric Evaluation ◽  
Web Based
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