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A circular matrix-merging algorithm with application in Volumetric Intensity-Modulated Arc Therapy

Danny Z. Chen, David Craft, Lin Yang
2015 Theoretical Computer Science  
This problem arises in Volumetric Intensity-Modulated Arc Therapy (VMAT) for radiation cancer treatment, where the circular structure represents a delivery arc path of 360 • around the patient and the  ...  In this paper, we study an optimization problem, called the circular matrix-merging (CMM) problem: Given a cyclic sequence of n non-negative matrices that are associated with some locations on a circle  ...  Acknowledgments This research was supported in part by NSF under Grant CCF-1217906. References  ... 
doi:10.1016/j.tcs.2015.04.028 fatcat:agosxhriwrgo7pf35ukgvd74qm

IMRT: a review and preview

Thomas Bortfeld
2006 Physics in Medicine and Biology  
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.  ...  In particular, the basic concepts and developments of both IMRT treatment planning ('inverse planning') and the delivery of cone-beam IMRT with a multileaf collimator from a fixed number of static beam  ...  Disclaimer In the spirit of this PMB anniversary issue, I wrote the review from a personal perspective, included some personal statements, and emphasized results published in PMB.  ... 
doi:10.1088/0031-9155/51/13/r21 pmid:16790913 fatcat:zgjodh2mnvctrlztctlqrmy4ou

A Model for Online Interactive Remote Education for Medical Physics Using the Internet

Milton K Woo, Kwan-Hoong Ng
2003 Journal of Medical Internet Research  
arc treatments, and 3. intensity modulated treatments.  ...  Non-physical wedges also have potential roles in intensity modulated radiation therapy.  ...  Modulation transfer function (MTF) and noise power spectrum (NPS) will be measured leading to determination of detective quantum efficiency (DQE). MTF will be measured in two directions using a slit.  ... 
doi:10.2196/jmir.5.1.e3 pmid:12746208 pmcid:PMC1550549 fatcat:tsyf45yusza2jiglkq62rgo3qm

SU-FF-I-79: Java-Based Plugin for Tomographic Reconstruction for SPECT Data

M Andrade, M Costa, A Marques da Silva
2006 Medical Physics (Lancaster)  
On-board CBCT projection data were acquired with a Varian 21EX Clinac, equipped with a kV on-board imager.  ...  We previously developed a method for generating reference DTS images from a planning CT for registration with actual onboard DTS images.  ...  Agnes HealthCare, Baltimore, MD Purpose: Intensity Modulated Arc Therapy (IMAT) has been proposed as an alternative to helical tomotherapy.  ... 
doi:10.1118/1.2240759 fatcat:5we2nvgwx5hrxcv2ngufce6obq

Overview of Volume Rendering [chapter]

ARIE KAUFMAN, KLAUS MUELLER
2005 Visualization Handbook  
by application of genetic algorithms.  ...  Fowler and Yagel [58] combined differential pulse-code modulation and Huffman coding, and developed a lossless volume compression algorithm, but their algorithm is not coupled with rendering.  ... 
doi:10.1016/b978-012387582-2/50009-5 fatcat:gthzcwcaanhuvhpmab7ii6r5fa

Computer-Assisted Analysis of Biomedical Images [article]

Leonardo Rundo
2021 arXiv   pre-print
Therefore, the computational analysis of medical and biological images plays a key role in radiology and laboratory applications.  ...  In conclusion, the ultimate goal of these research studies is to gain clinically and biologically useful insights that can guide differential diagnosis and therapies, leading towards biomedical data integration  ...  Especially, when cell colonies are small, characterized by a circular shape or with few adjacent merging colonies, such as in isolated and diluted bacteria cultures, the problem is easier to solve and  ... 
arXiv:2106.04381v1 fatcat:osqiyd3sbja3zgrby7bf4eljfm

2014 AAPM Spring Clinical Meeting - Abstracts

2014 Journal of Applied Clinical Medical Physics  
exam the applicability of a previously developed method of using an imaging-based volumetric metric to indicate the received dose.  ...  Methods TLDs were placed on the chest wall surface of an anthropomorphic male RANDO phantom that was irradiated with photon tangent beams and electron enface fields with a circular block.  ...  arc therapy (VMAT) versus constant dose rate intensity-modulated arc therapy (IMAT) in the treatment of thoracic esophageal carcinoma.  ... 
doi:10.1120/jacmp.v15i3.4958 pmid:28297364 pmcid:PMC5711065 fatcat:zuiip7h7rnamvlne6tg7dvgdqq

Sci-Fri PM: Planning-07: A low diffusion radiochromic gel dosimeter for three-dimensional radiation dosimetry

S Babic, J Battista, K Jordan
2008 Medical Physics (Lancaster)  
In this work, we address these two issues to enable frequent treatment corrections during a course of prostate intensity modulated radiation therapy (IMRT).  ...  MB Amorphous silicon (a-Si) electronic portal imaging devices (EPIDs) have been heavily investigated as treatment verification tools, with a particular focus on intensity modulated radiation therapy (IMRT  ...  and intensity modulated radiation therapy.  ... 
doi:10.1118/1.2965979 pmid:28512904 fatcat:sjyi6dusdfcnpkcouokve7itdq

Editorial advisory board members [chapter]

2008 Progress in Heterocyclic Chemistry  
processing and pattern recognition, computational geometry, visual human interaction and virtual reality, animation, multimedia systems and applications in parallel, distributed and mobile environment  ...  Journal of WSCG An international journal of algorithms, data structures and techniques for computer graphics and visualization, surface meshing and modeling, global illumination, computer vision, image  ...  Special thanks to Josué Quilliou and ACKNOWLEDGEMENTS Our thanks goes to the members of Laboratory of 3D Analytical and Visualization methods, Charles University in Prague for providing us with real  ... 
doi:10.1016/s0959-6380(08)80002-5 fatcat:iqgyohmpjrdhfdj3d6o6vkvkuu

Optical Technologies for the Improvement of Skin Cancer Diagnosis: A Review

Laura Rey-Barroso, Sara Peña-Gutiérrez, Carlos Yáñez, Francisco J. Burgos-Fernández, Meritxell Vilaseca, Santiago Royo
2021 Sensors  
In the context of increasing incidence and mortality, skin cancer bears a heavy health and economic burden.  ...  This paper reviews a variety of the optical modalities that have been used in the last years in order to improve non-invasive diagnosis of skin cancer, including confocal microscopy, multispectral imaging  ...  Full determination of the matrix is obtained by using a Mueller polarimeter that comprises a Stokes polarimeter with the additional polarization state generator (PSG), which modulates the input light polarization  ... 
doi:10.3390/s21010252 pmid:33401739 fatcat:gvnj2ctjqvdn7ghqlykg6lviie

2019 Index IEEE Transactions on Instrumentation and Measurement Vol. 68

2019 IEEE Transactions on Instrumentation and Measurement  
Constantin, F.L., TIM June 2019 2151-2159 Photodynamic therapy Wearable Inverse Light-Emitting Diode Sensor for Measuring Light Intensity at Specific Wavelengths in Light Therapy.  ...  ., +, TIM June 2019 2253-2259 Wearable Inverse Light-Emitting Diode Sensor for Measuring Light Intensity at Specific Wavelengths in Light Therapy.  ...  Image scanners Nonlinear Reconstruction of Multilayer Media in Scanning Microwave Microscopy. Wei, Z., +, TIM Jan. 2019 197-205  ... 
doi:10.1109/tim.2019.2956662 fatcat:kotlu7gwcngrdkelerc5va2hqe

TU-B-I-617-01: High Field MRI - Technology, Applications, Safety, and Limitations

RJ Stafford
2005 Medical Physics (Lancaster)  
In the treatment of a solitary lung nodule or liver metastasis, intensity modulated arc therapy (IMAT) provides desired dose distributions.  ...  the dosimetric effects of gating on Intensity Modulated Arc Treatments.  ...  dynamic intensity-modulated radiation therapy (IMRT) QA device.  ... 
doi:10.1118/1.1999700 fatcat:yub56igoe5cl3cthdpzwrdvjp4

SU-EE-A3-06: An Efficient Algorithm for Image-Based Dose Deformation and Accumulation

M Kaus, V Pekar, T McNutt, K Bzdusek
2005 Medical Physics (Lancaster)  
In the treatment of a solitary lung nodule or liver metastasis, intensity modulated arc therapy (IMAT) provides desired dose distributions.  ...  the dosimetric effects of gating on Intensity Modulated Arc Treatments.  ...  dynamic intensity-modulated radiation therapy (IMRT) QA device.  ... 
doi:10.1118/1.1997464 fatcat:zue2hfmc5ze6ziwu332w3u2lue

TU-EE-A3-05: Scatter Radiation in Digital Tomosynthesis

B Liu, S Glick, X Gong
2005 Medical Physics (Lancaster)  
In the treatment of a solitary lung nodule or liver metastasis, intensity modulated arc therapy (IMAT) provides desired dose distributions.  ...  the dosimetric effects of gating on Intensity Modulated Arc Treatments.  ...  dynamic intensity-modulated radiation therapy (IMRT) QA device.  ... 
doi:10.1118/1.1998434 fatcat:jnqebvqstnhixdmecqmh35gfbi

Proceedings of the 57th Annual Meeting of the Particle Therapy Cooperative Group (PTCOG)

2018 International Journal of Particle Therapy  
Proton Therapy with Small Spots and Volumetric-Modulated Arc Therapy C.  ...  Proton Therapy with Small Spots and Volumetric-Modulated Arc Therapy in the Treatment of Stage III Non-Small Cell Lung Cancer C.  ...  Pencil beam scanning proton therapy makes possible intensity modulation, resulting in improved target dose conformity and organ-at-risk (OAR) dose sparring.  ... 
doi:10.14338/2331-5180-5-2-000 pmid:31773035 pmcid:PMC6874191 fatcat:g7l3t34usnhdlpoa2y4r3rese4
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