Zobrazeno 1 - 10
of 275
pro vyhledávání: '"I I Rosen"'
Publikováno v:
Physics in Medicine and Biology. 35:423-427
The authors calculated the accuracy of isodose lines for a variety of clinical treatment techniques and beam energies using linear, quadratic and cubic spline interpolation methods. For a single beam, the greatest positional errors occur on either si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc29680cc2e4dbabb56b54ca4ea9fe05
https://doi.org/10.1088/0031-9155/35/3/010
https://doi.org/10.1088/0031-9155/35/3/010
Publikováno v:
Seminars in oncology. 26(2)
Technological advances in treatment delivery and planning have provided the backdrop for an unprecedented number of options in the treatment of prostate cancer with radiotherapy. The more common choices include classical external-beam radiotherapy, e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::67e1a0406e6b289e1c9ee4894ce7da50
https://pubmed.ncbi.nlm.nih.gov/10597726
https://pubmed.ncbi.nlm.nih.gov/10597726
Publikováno v:
Medical physics. 20(1)
Segmented conformal radiation therapy is a new computer-controlled treatment technique under investigation in which the target volume is subdivided into thick transverse segments each of which is then treated individually by rectangular transverse ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::2623f1fe3473563f3982e78f9d1f7942
https://pubmed.ncbi.nlm.nih.gov/8455499
https://pubmed.ncbi.nlm.nih.gov/8455499
Publikováno v:
Medical physics. 18(6)
A method of incorporating dose-volume considerations within the framework of conventional linear programming is presented. This method is suitable for the optimization of beam weights and angles using a conformal treatment philosophy (i.e., tailoring
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::632a634cebe9d44cc692fdc0d67763b8
https://pubmed.ncbi.nlm.nih.gov/1753905
https://pubmed.ncbi.nlm.nih.gov/1753905
Publikováno v:
Physics in medicine and biology. 36(10)
A variation of simulated annealing optimization called 'constrained simulated annealing' is used with a simple annealing schedule to optimize beam weights and angles in radiation therapy treatment planning. Constrained simulated annealing is demonstr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bcaaeb9939454122a8db3d75d09a0ff
https://pubmed.ncbi.nlm.nih.gov/1745662
https://pubmed.ncbi.nlm.nih.gov/1745662
Publikováno v:
Medical physics. 18(2)
Linear programming is a versatile mathematical tool for optimizing radiation therapy treatment plans. For planning purposes, dose constraint points, possible treatment beams, and an objective function are defined. Dose constraint points are specified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::1595998b26eccc11f67eb51ed856a683
https://pubmed.ncbi.nlm.nih.gov/2046598
https://pubmed.ncbi.nlm.nih.gov/2046598
Publikováno v:
Medical physics. 17(3)
In computer dose calculations using scatter-air ratio sector summation algorithms, the primary dose from the target to points away from the central axis of a beam is computed using an exponential intensity model of the source and a transmission param
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::86c0d5c41535fe8e40dc6407880672c4
https://pubmed.ncbi.nlm.nih.gov/2385199
https://pubmed.ncbi.nlm.nih.gov/2385199
Autor:
K R Hogstrom, I I Rosen
Publikováno v:
Physics in Medicine and Biology. 25:927-932
Results are presented which indicate that for these specific cases the biological half-life of the activated beta +-emitting radionuclides depends on the anatomical site, varying from 38 to 79 min for the sites measured. The abdominal tumours had gre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::052b7170ea47809d8031486491f58baf
https://doi.org/10.1088/0031-9155/25/5/011
https://doi.org/10.1088/0031-9155/25/5/011
Autor:
I I, Rosen
Publikováno v:
Medical physics. 12(5)
A general algorithm for treatment plan isodose line plotting is described which is particularly useful for pen plotters. Unlike other methods of plotting isodose lines, this algorithm is designed specifically to reduce pen motion, thereby reducing pl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::97e4b0d8c894516eda9db86ee5a8de8b
https://pubmed.ncbi.nlm.nih.gov/3840225
https://pubmed.ncbi.nlm.nih.gov/3840225
Publikováno v:
Medical physics. 10(6)
A template for calculating equivalent squares of irregularly shaped fields is described. Calculations using the template are essentially scatter summations. Comparisons with a computer program showed good agreement in equivalent squares and tumor dos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5b7dbf18a5df2e420bad4d6d1f0a0616
https://pubmed.ncbi.nlm.nih.gov/6656701
https://pubmed.ncbi.nlm.nih.gov/6656701