computerized treatment planning systems for external photon beam radiotherapy

... gaussian pencil beam model for photon beam treatment planning Z Med Phys 1995, 5:25-30 Ulmer W, Harder D: Applications of a triple gaussian pencil beam model for photon beam treatment planning Z Med ... Eclipse 15 JM and MA performed planning on Hyperion BD, FL and FL performed planning on Konrad 16 17 MP and FL performed planning on PrecisePlan 18 BD, DW and FL performed planning on Corvus 19 ... reported for the total plan (i.e sum of plans for PTV1 and PTV2 for the first patients) Figures 3, 4, 5, show the DVH of PTV2 (PTV for patient 4) and for the involved OAR for the total treatment for...

Ngày tải lên: 09/08/2014, 10:21

... Barber Vol 3: Nanostructured and Photoelectrochemical Systems for Solar Photon Conversion eds Mary D Archer & Arthur J Nozik Forthcoming From Solar Photons to Electrons and Molecules by Mary D Archer ... experimental techniques for the characterisation of semiconductor photoelectrochemical systems Semiconductors have been the electrode materials of choice for solar photon conversion for nearly thirty ... global funding streams for research to develop advanced solar photon conversion technologies remain fragile despite the concerted and powerful case for a ‘Manhattan project’ effort to so made by...

Ngày tải lên: 04/06/2014, 14:30

... the treatment planning, since our comparisons were performed on the same treatment planning system for two treatment platforms with similar open-field beam characteristics, using the same beam ... between the MLC systems is quite small, regardless of the treatment planning technique (see Additional file 2), attributable in part to the number of beams used for treatment planning Normal ... distributions and DVHs for a lung lesion generated from three different planning techniques and two MLC systems Isodose distributions and DVHs for a lung lesion generated from three different planning techniques...

Ngày tải lên: 09/08/2014, 10:20

... combination of surgery, radiotherapy and chemotherapy Three dimensional (3D) conformal radiotherapy treatment planning is still the main stay of treatment for these patients with treatment volume delineation ... simulation computed tomography New technologies for radiotherapy planning and treatment such as Intensity Modulated Radiotherapy (IMRT) and new treatment instruments such as Tomotherapy are becoming ... in treatment planning BA participated in treatment planning US participated in the statistical analysis of the results and helped revising the draft manuscript RWM participated in treatment planning...

Ngày tải lên: 09/08/2014, 10:20

... Problem Instances For Hard-Disk Drive Build -Planning Problem 123 6.2 Computational Results For Hard-Disk Drive Build -Planning Problem 125 6.3 CPU time (s) For Hard-Disk Drive Build -Planning Problem ... lot-sizing For parallel systems, Gabbay44 studied the case where each level is constrained Zahorik et al143 presented heuristics for an n-period problem using a network formulation For assembly systems, ... basic models for E/T production planning, one 34 in a mass or repetitive manufacturing system via a LP formulation and the other for a one-of-a-kind product manufacturing via a MIP formulation...

Ngày tải lên: 15/09/2015, 21:48

... prostate cancer Color wash for the planning target volume (PTV) for two Color wash IMRT, IMPT, RA_HD120 and RA_M120 dose distributions for the planning target volume (PTV) for two patients with recurrent ... K: Volumetric modulated arc therapy for delivery of prostate radiotherapy Comparison with intensity modulated radiotherapy and three-dimensional conformal radiotherapy Int J Radiat Oncol Biol ... relapse after surgery for prostate cancer: A model to define treatment 19 20 21 22 23 24 25 26 27 28 field guidelines for adjuvant radiotherapy in patients at high risk for local failure Int...

Ngày tải lên: 09/08/2014, 10:20

... utilize information systems If, in a Yellow Book financial statement audit, the entity is significantly dependent upon computerized information systems, the auditor must 44 provide specific information ... Monitoring the information system security audit process Monitoring key performance indicators Assessing performance of critical success factors Devising key performance measures Performing evaluations ... auditors with Certified Information Systems Auditor (CISA) designations or with graduate degrees in computer science or management information systems Assessing Performance of Critical Success...

Ngày tải lên: 05/03/2014, 21:20

... v Prologue xi Foreword xv Preface xix SECTION I Planning the Trip Introduction: Planning the Trip Person-Centered Care 17 The Value of Individual Planning 39 Treatment Planning for Person Centered ... Treatment Planning for Person-Centered Care: The Road to Mental Health and Addiction Recovery This Page Intentionally Left Blank Treatment Planning for Person-Centered Care: ... and forgiveness that made writing this book possible To our spouses, Lucy and Marion, and to our children, Alyssa, Caleb, Parris, and Zachary, we will be forever grateful Treatment Planning for...

Ngày tải lên: 29/03/2014, 00:21

... level for radiotherapy Modern treatment planning systems often use a conversion of the Hounsfield numbers to relative electron density to calculate doses This can be done through use of generic formulas[19] ... resonance simulator for radiotherapy treatment planning of brain tumours Radiother Oncol 2008, 87:100-109 25 White GRDR, Wilson IJ: Photon, Electron, Proton and Neutron Interaction Data for Body Tissues ... shape as the radiotherapy couch For all examinations, the CT imaging was performed with a GE Lightspeed scanner (GE Medical Systems, Milwaukee, Il, USA) equipped with a carbon fiber radiotherapy...

Ngày tải lên: 09/08/2014, 09:20

... JD were responsible for treatment decisions, dose prescription and target volume delineation Data analysis was performed by FW MK was responsible for treatment planning AW performed the PET/CT ... for radiation treatment planning Strahlenther Onkol 2005, 181:483-499 Picchio M, Giovannini E, Crivellaro C, Gianolli L, Muzio Nd, Messa C: Clinical evidence on PET/CT for radiation therapy planning ... SUVmax for primary and recurrent prostate cancer The maximum standardized uptake value (SUVmax) is given for primary and recurrent prostate cancer receiving a Choline-PET/CT for diagnosis and radiotherapy...

Ngày tải lên: 09/08/2014, 09:20

... Nevertheless, CT scan is still widely used for prostate cancer planning, being the standard imaging technique for most radiotherapy Institutes where access to MRI for planning is still lacking Although ... (dys)function after radiotherapy for prostate cancer: a review Int J Radiat Oncol Biol Phys 2002, 52:681-693 Incrocci L: Sexual function after external- beam radiotherapy for prostate cancer: ... conformal radiotherapy for prostate cancer J Urol 2002, 167:539-542 Mulhall JP, Yonover P: Correlation of radiation dose and impotence risk after three-dimensional conformal radiotherapy for...

Ngày tải lên: 09/08/2014, 09:21

... including three-dimensional conformal radiotherapy (3D-CRT) or intensity-modulated radiotherapy (IMRT) with or without low-dose rate (LDR), high-dose rate (HDR) or particle beam boost [6-9] Patient ... post treatment QoL Various studies have demonstrated the significance of HRQoL assessment when considering different treatment options for prostate cancer and suggested that recommended treatment ... and external beam irradiation for localized prostate cancer Ann Oncol 1998, 9:751-757 Hsu IC, Cabrera AR, Weinberg V, Speight J, Gottschalk AR, Roach M 3rd, Shinohara K: Combined modality treatment...

Ngày tải lên: 09/08/2014, 09:22

... margin to the CTV For clinical purposes, we always considered the PET image as an additional information to CT image either for tumor staging or for target contouring for treatment planning Statistical ... [9] No patients were candidates for curative surgery Fifteen patients were candidates for combined radiotherapy and platinum-based chemotherapy and patients for radiotherapy alone Image acquisition ... recording, and reporting photon beam therapy (supplement to ICRU report 50) Bethesda, MD: ICRU; 1999 Paulino AC, Thorstad WL, Fox T: Role of fusion in radiotherapy treatment planning Semin Nucl Med...

Ngày tải lên: 09/08/2014, 09:22

... IMRT and RapidArc tion for Beam arrangements, isocentre position and targets localizaBeam arrangements, isocentre position and targets localization for IMRT and RapidArc For RapidArc, two arcs, ... K: Volumetric modulated arc therapy for delivery of prostate radiotherapy Comparison with intensity modulated radiotherapy and three-dimensional conformal radiotherapy Int J Radiat Oncol Biol ... Cozzi L: IMRT for breast, a planning study Radiother Oncol 2005, 76:300-310 Fogliata A, Bolsi A, Cozzi L: Critical appraisal of treatment techniques based on conventional photon beams, intensity...

Ngày tải lên: 09/08/2014, 10:20

... J, Calvo FA: Intraoperative radiotherapy electron boost followed by moderate doses of external beam radiotherapy in resected soft-tissue sarcoma of the extremities Radiotherapy And Oncology: Journal ... more recent papers preferred the combination of IORT as an early boost with a highly conformal external beam radiotherapy In this setting electron doses of 7.5 – 25 Gy were combined with doses ranging ... facilitate planning of EBRT later X-rays were taken normally in anterior and lateral direction The patient was transferred to the radiotherapy room under anaesthesia, and radiotherapy was performed...

Ngày tải lên: 09/08/2014, 10:20

... course of radiotherapy and correlate well with RTOG/ EORTC scores [27] The aim of this study was to evaluate gastrointestinal quality of life changes after external beam radiotherapy for prostate ... years 2003-2006 The treatment was based on a treatment planning CT scan in supine position with a slice thickness of mm Patients were asked to have a full bladder for the planning computed tomography ... Conclusion Irritative symptoms constitute the major problem for patients in the acute phase during and after external beam radiotherapy for prostate cancer Irritative symptoms, incontinence and...

Ngày tải lên: 09/08/2014, 10:20

... multiple treatment techniques to reduce the delivery time A remaining goal is to reduce the planning time by automating parts of the planning process Most current IMRT treatment planning systems ... inverse planning to replace the routine procedure performed by a human planner [6,7] Most recently, this AI approach was implemented in a clinical treatment planning system Based on this platform ... inverse planning system The dose-volume constraint optimization process was fully performed by the ANFIS For comparison, two treatment plans were generated manually and by the oFIS The Eclipse© treatment...

Ngày tải lên: 09/08/2014, 10:20

... highly conformal treatments including IMRT even increases the need for optimal target volume delineation In the present study we evaluated the value of the [68Ga]DOTATOC-PET for treatment planning ... [68Ga]-DOTATOC-PET/CT for treatment planning of complex meningiomas preferentially of the skull base we retrospectively analyzed a series of patients in whom CT/MRI based treatment planning was complemented ... of interest (ROI, 50% isocontour) method and was corrected for weight Treatment planning and target volume definition IMRT treatment planning was primarily based on diagnostic MRI data and was...

Ngày tải lên: 09/08/2014, 10:20

... trial GOG #123 compared pre-operative chemoradiotherapy to preoperative radiotherapy and demonstrated a better outcome for the combined treatment group (for both OS and PFS and also improved the ... treated with hysterectomy following radiotherapy for bulky cervical carcinoma [13,14] O'Quim and cols published special recommendations for hysterectomy following RT for bulky endocervical carcinoma ... Background Radiotherapy (RT), surgery (S), or the combination of both treatments with preoperative radiotherapy following surgery (RT→S) have all been shown to be effective localregional treatments...

Ngày tải lên: 09/08/2014, 10:21

... Currently, treatment planning studies based Page of 10 (page number not for citation purposes) Radiation Oncology 2007, 2:24 Figure 4D treatment planning for a lung tumor 4D treatment planning for a ... dependent on Nij and the synchrotron extraction profile Treatment planning is performed with the GSI treatment planning system TReatment planning for Particles (TRiP) based on a native computed tomogram ... 4D treatment planning for scanned ion beams The combination of scanned particle beams and target motion represents a double-dynamic system that requires a dedicated solution for 4D treatment planning...

Ngày tải lên: 09/08/2014, 10:21