Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Fung, A.Y.C. Zaider, M. |
| Copyright Year | 2000 |
| Description | Author affiliation: Memorial Sloan-Kettering Cancer Center, New York, NY, USA (Fung, A.Y.C.) |
| Abstract | In prostate brachytherapy, the physical advantages of high dose rate (HDR) treatment with remote afterloading versus low dose rate (LDR) permanent implant include more conformal dose distribution. In practice, catheters placed in the patient are often not rectilinear or parallel to each other as intended. If the treatment planning system does not account for this feature the resulting treatment plan-while adequate on paper-may result in erroneous dose delivery. There are basically three approaches to catheter digitization: (1) Parallel reconstruction: one digitizes only one point for each catheter at the central slice, and assumes that the catheters are parallel to each other and horizontal; (2) Straight reconstruction: both ends of the catheters are digitized, thus assuming the catheters are straight while at an angle to each other; (3) Slice-by-slice reconstruction: every catheter is digitized on all slices to obtain its exact geometry. The in-house treatment planning system currently in use at Memorial Sloan-Kettering Cancer Center makes use of slice-by-slice reconstruction. With isodose distributions and dose volume histograms, the authors studied the problems encountered when approximate reconstruction methods are used. Dose distribution resulting from parallel reconstruction is significantly different from "real" distribution. In contrast, dosimetric difference between straight and slice-by-slice reconstructions appears minor. This is because quite often catheters are not parallel to each other, but each individual catheter is fairly straight. The authors suggest that parallel reconstruction is too inaccurate for dosimetric planning, while slice-by-slice reconstruction may be too time-consuming. Straight (two point) reconstruction represents a balance between accuracy and efficiency. |
| Starting Page | 2685 |
| Ending Page | 2688 |
| File Size | 259565 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780364651 |
| ISSN | 1094687X |
| DOI | 10.1109/IEMBS.2000.901413 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-07-23 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Catheters Computed tomography Image reconstruction Brachytherapy Geometry Cancer Implants Ultrasonic imaging Histograms Reconstruction algorithms |
| 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...
|