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Field Splitting Problems in Intensity-Modulated Radiation Therapy
[chapter]
2006
Lecture Notes in Computer Science
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In this paper, we consider a set of geometric and combinatorial problems that arise in IMRT planning and delivery, such as static leaf sequencing, static leaf sequencing with error control, field splitting ...
We discuss efficient algorithms for these problems. ...
Leaf Sequencing for Dynamic IMRT and Arc Modulated Radiation Therapy In this section, we study the dynamic leaf sequencing problem and the single-arc leaf sequencing problem, i.e., the leaf sequencing ...
doi:10.1007/11940128_69
fatcat:5atvqhymi5aetaxakgqlgde2xm
Arc-modulated radiation therapy (AMRT): a single-arc form of intensity-modulated arc therapy
2008
Physics in Medicine and Biology
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In this paper, we present a treatment planning scheme for AMRT, which addresses the challenges in inverse planning, leaf sequencing and dose calculation. ...
therapy (AMRT) is a novel rotational intensitymodulated radiation therapy (IMRT) technique developed for a clinical linear accelerator that aims to deliver highly conformal radiation treatment using just ...
Acknowledgments The authors would like to thank the anonymous reviewers for their thoughtful comments. ...
doi:10.1088/0031-9155/53/22/002
pmid:18936519
fatcat:z4bxz5fwhbbp5bgjjtmttje54i
Intensity-modulated radiation therapy: a review with a physics perspective
2018
Radiation Oncology Journal
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Intensity-modulated radiation therapy (IMRT) has been considered the most successful development in radiation oncology since the introduction of computed tomography into treatment planning that enabled ...
More than three decades have passed since the concept of inverse planning was first introduced in 1982, and IMRT has become the most important and common modality in radiation therapy. ...
In 1992, Convery and Rosenbloom [18] developed an outstanding 'leaf sequencing' approach that allowed arbitrary intensity profiles to be produced by a unidirectional 'sweep' motion of the MLC leaves ...
doi:10.3857/roj.2018.00122
pmid:29621869
pmcid:PMC5903356
fatcat:nzkbrqv3k5djjlokxgslxfukte
IMRT: delivery techniques and quality assurance
2003
British Journal of Radiology
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Intensity modulated radiotherapy (IMRT) is a major development in the delivery of radiation therapy that has the potential to improve patient outcome by reducing morbidity or increasing local tumour control ...
It demonstrates that the technology is mature and sufficiently well understood so that IMRT can be safely implemented in the general clinical environment rather than being limited to application in the ...
However the problem of geometrically small segments remains. ...
doi:10.1259/bjr/12907222
pmid:14623777
fatcat:abtweythpzawhjtnb2j27gc5by
IMRT: a review and preview
2006
Physics in Medicine and Biology
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The very first cornerstone paper on intensity-modulated radiation therapy (IMRT) was published in Physics in Medicine and Biology, and many seminal IMRT works have since appeared in this journal. ...
Today IMRT is a widely used clinical treatment modality in many countries. ...
Acknowledgment I am grateful to Steve Webb for his helpful comments on the manuscript. I would like to thank Wolfgang Schlegel, Art Boyer, and Michael Patterson for their feedback and useful input. ...
doi:10.1088/0031-9155/51/13/r21
pmid:16790913
fatcat:zgjodh2mnvctrlztctlqrmy4ou
The use of EPID-measured leaf sequence files for IMRT dose reconstruction in adaptive radiation therapy
2008
Medical Physics (Lancaster)
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The approach also allows users who do not have access to MLC log files to probe the actual IMRT delivery and translate the information gained for dose reconstruction in adaptive radiation therapy. ...
a leaf sequence ͑LS͒ file based on the leaf end positions calculated from the MLC segments and their associated fractional monitor units. ...
INTRODUCTION An advantage of the fractionation scheme in radiation treatment is that it offers room for adaptive radiation therapy ͑ART͒. ...
doi:10.1118/1.2990782
pmid:19070236
pmcid:PMC2737246
fatcat:72yecaattvhg3d6wx4xo2nlyt4
Intensity-modulated arc therapy: principles, technologies and clinical implementation
2011
Physics in Medicine and Biology
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However, there remains a lack of general understanding for the planning of such arc treatments, as well as what delivery limitations and compromises are made. ...
In recent years, single-arc forms of IMAT have emerged and become commercially adopted. ...
Acknowledgement The work is supported, in part, by the NIH/NCI grant no R01CA117997. ...
doi:10.1088/0031-9155/56/5/r01
pmid:21297245
fatcat:c2drmskatjhbpgrr3y625aodde
From analytic inversion to contemporary IMRT optimization: Radiation therapy planning revisited from a mathematical perspective
2012
Physica medica (Testo stampato)
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Historically, planning for Intensity-Modulated Radiation Therapy (IMRT) has been considered as an inverse problem. ...
In this paper we look at the development of radiation therapy treatment planning from a mathematical point of view. ...
therapy treatment planning and other inverse problems. ...
doi:10.1016/j.ejmp.2011.04.002
pmid:21616694
pmcid:PMC3164927
fatcat:i4hrzfkpzndbho7cgolsm2bqka
Technological quality requirements for stereotactic radiotherapy
2020
Strahlentherapie und Onkologie (Print)
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Additionally, further research and development needs in terms of insufficient data and unsolved problems for stereotactic radiotherapy are identified, which will serve as a basis for the future assignments ...
of the DGMP Working Group for Physics and Technology in Stereotactic Radiotherapy. ...
K K Each MRI sequence should be corrected for geometric distortions in the intrinsic imaging processing method of the MRI scanner (with a 3D approach if possible). ...
doi:10.1007/s00066-020-01583-2
pmid:32211939
fatcat:qg7jdiwjdrdlxi5mtwydq3snfy
Inverse Treatment Planning for Radiation Therapy Based on Fast Monte Carlo Dose Calculation
[chapter]
2001
Advanced Monte Carlo for Radiation Physics, Particle Transport Simulation and Applications
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The corresponding techniques, whose implementation is the subject for future work, are also presented here. ...
It allows optimisation of intensity modulated dose distributions in 15 to 60 minutes on present day personal computers. ...
Dynamic Multi Leaf Collimators An alternative method to deliver intensity modulated beam profiles in radiation therapy is the use of dynamic multi-leaf collimators (DMLC). ...
doi:10.1007/978-3-642-18211-2_36
fatcat:lfuv773ygvhl5fj7xg25j3fwgq
Simultaneous delivery time and aperture shape optimization for the volumetric-modulated arc therapy (VMAT) treatment planning problem
2017
Physics in Medicine and Biology
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In this paper, we propose a novel heuristic algorithm for the volumetric-modulated arc therapy (VMAT) treatment planning problem, optimizing the trade-off between delivery time and treatment quality. ...
Our heuristic is based on column generation; the aperture configuration is modeled in the columns and the dose distribution and time restriction in the rows. ...
Similar to intensity modulated radiation therapy (IMRT), the beams are formed by a multi-leaf collimator (MLC). ...
doi:10.1088/1361-6560/aa7447
pmid:28524822
fatcat:yz5ihandxrfqvbr7zzw6qljrwe
Multi-criteria optimization methods in radiation therapy planning: a review of technologies and directions
[article]
2013
arXiv
pre-print
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We review the field of multi-criteria optimization for radiation therapy treatment planning. ...
Once a high quality solution is selected from the Pareto surface, a sparse version (which can mean fewer beams, fewer segments, less leaf travel for arc therapy techniques, etc.) is obtained using an appropriate ...
This approach is logical for radiation therapy planning problems in that its first focus is on achieving a plan of good balance between target coverage and healthy organ sparing. ...
arXiv:1305.1546v1
fatcat:qgfgrxhpxrbqnpvze6uvq7waw4
A new MLC segmentation algorithm/software for step-and-shoot IMRT delivery
2004
Medical Physics (Lancaster)
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Our new segmentation algorithm, called SLS ͑an abbreviation for static leaf sequencing͒, is based on graph algorithmic techniques in computer science. ...
Elekta SL 20 Linac system in contrast to the 72 min for the CORVUS 4.0 sequences ͑a three-fold improvement͒. ...
The work of the first author was also supported in part by a fellowship from the Center for Applied Mathematics at the University of Notre Dame. ...
doi:10.1118/1.1646471
pmid:15124986
fatcat:ktts2wzabzewxit4774tzqsf4a
Planning and delivery of intensity-modulated radiation therapy
2008
Medical Physics (Lancaster)
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Intensity modulated radiation therapy ͑IMRT͒ is an advanced form of external beam radiation therapy. ...
IMRT offers an additional dimension of freedom as compared with field shaping in threedimensional conformal radiation therapy because the radiation intensities within a radiation field can be varied according ...
Ensuring such connectedness of adjacent subfields for smooth leaf motion is of great concern in the leaf sequencing algorithm for IMAT. 13,14 Effective planning tools for IMAT have only been developed ...
doi:10.1118/1.3002305
pmid:19175082
fatcat:7eatvejoqzhcnduklcokjgukoq
Combining segment generation with direct step-and-shoot optimization in intensity-modulated radiation therapy
2008
Medical Physics (Lancaster)
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A method for generating a sequence of intensity-modulated radiation therapy step-and-shoot plans with increasing number of segments is presented. ...
The segment generation is based on a column generation approach. ...
Acknowledgements I thank Anders Forsgren for many helpful discussions on the mathematical aspects of this problem. ...
doi:10.1118/1.2964096
pmid:18841833
fatcat:uqesppum5vglngyrz5cdg7b5um
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