Please wait, while we are loading the content...
Please wait, while we are loading the content...
Content Provider | IEEE Xplore Digital Library |
---|---|
Author | Toledo, E. Lang, R.M. Collins, K.A. Williams, U. Lammertin, G. Weinert, L. Mor-Avi, V. |
Copyright Year | 2004 |
Description | Author affiliation: Chicago Univ., IL, USA (Toledo, E.; Lang, R.M.; Collins, K.A.; Williams, U.; Lammertin, G.; Weinert, L.; Mor-Avi, V.) |
Abstract | The new real-time three-dimensional (RT3D) echocardiographic technology offers an opportunity for myocardial perfusion imaging in the entire heart without the need for reconstruction from multiple slices and repeated contrast maneuvers. Our aims were to develop and validate a technique for quantitative volumetric assessment of myocardial perfusion. Studies were conducted in 5 isolated rabbit hearts and in 5 patients with ischemic heart disease. In rabbits, RT3D datasets were acquired over 30 sec, during which infusion of contrast agent definity was initiated and reached steady-state myocardial enhancement. Data were obtained at 3 different levels of coronary flow. At each level, myocardial videointensity (MVI) was measured over time in 3 LV short-axis slices of fixed thickness and peak contrast inflow rate (PCIR) was calculated. Administration of contrast resulted in clearly visible and measurable dynamic changes in MVI. PCIR followed the changes in coronary flow (p<0.0I). Feasibility in humans was tested by imaging the interventricular septum during initiation of infusion of definity at rest and during adenosine infusion. Dynamic changes in MVI were visible and suitable for quantitative analysis. In 2 patients, adenosine resulted in dark regions, reflecting lack of myocardial filling in stenosis-related territories. RT3D imaging and quantification of myocardial perfusion using our algorithm are feasible. This approach can potentially allow more accurate assessment of the extent of perfusion defects than 2D myocardial contrast echocardiography. |
Starting Page | 225 |
Ending Page | 228 |
File Size | 758033 |
Page Count | 4 |
File Format | |
ISBN | 0780389271 |
DOI | 10.1109/CIC.2004.1442913 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2004-09-19 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Myocardium Heart Rabbits Optical imaging Isolation technology Image reconstruction Cardiac disease Steady-state Thickness measurement Time measurement |
Content Type | Text |
Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
Sl. | Authority | Responsibilities | Communication Details |
---|---|---|---|
1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
Loading...
|