Usefulness of CT-MRI Fusion in Radiotherapy Planning for Localized Prostate Cancer

スポンサーリンク

概要

• 論文の詳細を見る

• We compared the prostate volumes and rectal doses calculated by CT and CT-MRI fusion, and verified the usefulness of CT-MRI fusion in three-dimensional (3D) radiotherapy planning for localized prostate cancer. Three observers contoured the prostate and rectum of 13 patients with CT and CT-MRI fusion. Prostate delineations were classified into three sub-parts, and the volumes and distances to the rectum (PR distance) were calculated. 3D radiotherapy plans were generated. A dose-volume histogram (DVH) was constructed for the rectum. The intermodality and interobserver variations were assessed. CT-MRI fusion yielded a significantly lower prostate volume by 31%. In the sub-part analysis, the greatest difference was seen for the apical side. The PR distance was significantly extended by 3.5-mm, and the greatest difference was seen for the basal side. The irradiated rectal volume was reduced in the CT-MRI fusion-based plan. The reduction rates were greater in the relatively high-dose regions. The decrease of the prostate volume and length alteration of the distance between the prostate and rectum were correlated with the decrease of the irradiated rectal volume. The prostate volume delineated by CT-MRI fusion was negatively correlated with the decrease of the irradiated rectal volume. CT showed a tendency towards overestimation of the prostate volume and underestimation of the PR distance as compared to CT-MRI fusion. The rectal dose was significantly reduced in CT-MRI fusion-based plan. Using CT-MRI fusion, especially in cases with a small prostate, the irradiated rectal volume can be reduced, with consequent reduction in rectal complications.

• 2011-11-16

著者

• Hoshi Hiroaki

  Department Of Radiology Gifu University

• Iida Takayoshi

  Department Of Radiology Gifu Municipal Hospital

• Iida Takayoshi

  Department Of Applied Chemistry And Biotechnology Faculty Of Engineering Niigata Institute Of Techno

• Tanaka Hidekazu

  Department Of Internal Medicine Iii Osaka Medical College

• Hayashi Shinya

  Department Of Chemical Engineering Kobe University

• Ohtakara Kazuhiro

  Department Of Neurosurgery Mie University School Of Medicine

• Ohtakara Kazuhiro

  Department Of Radiology Gifu University Graduate School Of Medicine

• Hayashi Shinya

  Department Of Radiology Gifu University Hospital

• Hoshi Hiroaki

  Department Of Radiology Gifu University Hospital

• Tanaka Hidekazu

  Department Of Earth And Planetary Sciences Faculty Of Science Tokyo Institute Of Technology

• Tanaka Hidekazu

  Department Of Radiology Gifu University Hospital

• Tanaka Hidekazu

  Department Of Chemistry And Chemical Biology Gunma University

関連論文

• A New Proposal for Neutrino Mass and |V_| Measurements(Particles and Fields)
• Momoiite, (Mn^, Ca)_3(V^, Al)_2Si_3O_, a new manganese vanadium garnet from Japan
• Susceptibility, Magnetization Process and ESR Studies on the Helical Spin System RbCuCl_3 : Condensed Matter: Electronic Properties, etc.
• Singlet Ground State and Spin Gap in S=1/2 Kagome Antiferromagnet Rb_2Cu_3SnF_(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Magnetic Phase Transitions in Rb_K_xNiCl_3 System : A Mixture of Antiferromagnets on Deformed Triangular Lattice
• Successive Magnetic Phase Transitions in RbVBr_3
• Magnetic Phase Diagram of CsMn_Co_xCl_3・2H_2O
• ESR in Hexagonal ABX_3 Type Antiferromagnets. II.KNiCl_3: Easy-Plane Anisotropy Case
• ESR in Hexagonal ABX_3-Type Antiferromagnets. : I. Ground State Properties in Easy-Axis Anisotropy Case
• The Successive Magnetic Phase Transition of Hexagonal Antiferromagnet CsMnI_3 Observed by Optical Birefringence
• Magnetic Susceptibility Study on RbCuCl_3
• Magnetic Phase Transition in (CH_3)_4NMnBr_3(TMMB)
• Electron Paramagnetic Resonance in the Quasi-One-Dimensional Jahn-Teller-Crystals.I.CsCuCl_3
• Magnetic Susceptibility Studies on CsCrCl_3 and RbCrCl_3
• Influence of Cooperative Jahn-Teller Effect in CsCuCl_3 Crystals on the Broadening of EPR Lines
• Concomitant translocation of Purα with its binding proteins (PurBPs) from nuclei to cytoplasm during neuronal development
• Functional Analyses of Neuronal Genes in Zebrafish
• Moving Point Light Source Photometric Stereo
• Thermodynamic Properties and Elementary Excitations in Quantum Sine-Gordon Spin System KCuGaF_6(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Softening of Magnetic Excitations Leading to Pressure-Induced Quantum Phase Transition in Gapped Spin System KCuCl_3(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Magnetic and Dielectric Properties of RbCoBr_3 Inspected from Nonmagnetic Impurity Effect(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Classical Properties in Spin Dynamics in the S = 2 One-Dimensional Heisenberg Antiferromagnet, CsCrCl_3
• Magnetic Phase Transition and Magnetization Plateau in Cs_2CuBr_4
• Magnetization Plateaus in NH_4CuCl_3
• High-Field Magnetization Processes of Double Spin Chain Systems KCuCl_3 and TlCuCl_3
• Numerical Calculation of Schwinger-Dyson Equation with Momentum-Dependent Gauge Parameter at Finite Temperature(Particles and Fields)
• Hydrothermal Dechlorination of a Raclaimed Oil in a Continuous Packed-Bed Reactor
• Field-Induced Two-Step Phase Transitions in the Singlet Ground State Triangular Antiferromagnet CsFeBr_3
• Singlet Ground State and Magnetization Plateaus in Ba_3Mn_2O_8 : Condensed Matter: Electronic Properties, etc.
• Observation of Field-Induced Transverse Neel Ordering in the Spin Gap System TlCuCl_3 : Condensed Matter: Electronic Properties, etc.
• Magnetic Excitations in the Spin Gap System KCuCl_3
• Magnetic-Field Induced Bose-Einstein Condensation of Magnons and Critical Behavior in Interacting Spin Dimer System TlCuCl_3(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Orbital Configurations and Magnetic Properties of Double-Layered Antiferromagnet Cs_3Cu_2Cl_4Br_3(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Usefulness of MR imaging in the postsurgical monitoring of gallbladder cancer in a patient with bile duct cancer that developed 7 years after resection of mucinous adenocarcinoma of the gallbladder
• Spin Fluctuations in the Ground State of Doped Quantum Spin System TlCu_Mg_xCl_3 with x = 0.0047 Probed by Muon-Spin-Relaxation Technique
• The Effect of Randomness on the Quantum Spin System Tl_K_xCuCl_3 with x=0.44 Studied by the Zero-Field Muon-Spin-Relaxation (ZF-μSR) Method(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Muon-Spin-Relaxation Study on Single Crystals Tl_K_xCuCl_3 with x=0.2
• Gapped Ground State in the Spin-1/2 Trimer Chain System Cu_3Cl_6(H_2O)_2 2H_8C_4SO_2 : Condensed Matter: Electronic Properties, etc.
• Comparison of urethral diameters for calculating the urethral dose after permanent prostate brachytherapy
• CT-based postimplant dosimetry of prostate brachytherapy : comparison of 1-mm and 5-mm section CT
• Chest wall Castleman's disease : CT and MRI findings
• M Pathway and Areas 44 and 45 Are Involved in Stereoscopic Recognition Based on Binocular Disparity
• A Polymer Complex [Cu(O_2CC_6F_5)_2-(pyz)]_n Formed from Copper(II) Pentafluorobenzoate and Pyrazine
• Observation of Anomalous ESR Mode of CsCuCl_3 in Submillimeter Wave Region
• Submillimeter Wave ESR Measurements of CsMnBr_3
• Effects of Diagonal Interchain Exchange Interaction on the ESR Modes of ABX_3-Type Triangular Antiferromagnets
• Magnetic Susceptibility Study of CsCuCl_3
• Effects of Interchain Exchange Interactions on ESR Modes in Axial Triangular Antiferromagnets
• K-means clustering and classification of medical images based on regions-of-interest
• Development of an Automated Method for the Detection of Chronic Lacunar Infarct Regions in Brain MR Images(Image Recognition, Computer Vision)
• Classification of Cirrhotic Liver in MRI Images Using Texture Features
• An atlas-driven approach for automated recognition of liver structure in non-contrasted torso CT images
• Automatic Segmentation of Hepatic Tissue and 3D Volume Analysis of Cirrhosis in Multi-Detector Row CT Scans and MR Imaging(Biological Engineering)
• ^Tl SPECT for evaluating head and neck cancer
• Inhibition of Matrix Metalloproteinase-9 Activity by Trandolapril after Middle Cerebral Artery Occlusion in Rats
• Material Design for the Fabrication of p-type SrTiO_3 : Electrical Properties of Condensed Matter
• Factorization Algorithm for Parton Showers beyond the Leading Logarithmic Order of QCD(Particles and Fields)
• Space-Like Jet Calculus for Single Gluon Radiating Processes
• Three-Gluon Decay Function Using Space-Like Jet Calculus beyond the Leading Order
• Structural and Magnetic Phase Transitions in RbVBr_3
• Overestimation Radio of Hepatic Lesion Size on Spiral CT Arterial Portography: An Indicator of Malignancy
• Spontaneous Bacterial Peritonitis in Cirrhosis: Enhancement of Ascites on Delayed MR Imaging
• Renal Pelvic and Ureteral Carcinoma with Huge Hydronephrosis: US, CT, and MR Findings
• Microwave-Assisted Two-Step Process for the Synthesis of a Single-Phase Na-A Zeolite from Coal Fly Ash
• Spin Dynamics of the Half-Integer-Spin Quasi-One-Dimensional Heisenberg Antiferromagnet CsMnI_3
• Drell-Yan Cross Section in the Jet Calculus Scheme(Particles and Fields)
• Detection of hepatic tumours on Multi-phase CT images for surgical plan
• Automated detection of chest nodules in 3D chest CT scans by using 2nd-order autocorrelation features
• Nodule Detection in 3D Chest CT Images Using 2nd Order Autocorrelation Features and GA Template Matching(Joint Session 1)
• Birefringence Study on Structural and Magnetic Phase Transitions pf RbMnBr_3
• The expression and localization of β-endorphin and μ, δ-opioid receptors in synovial tissues in patient with rheumatoid arthritis and osteoarthritis
• Orbital Stability of a Protoplanet System under a Drag Force Proportional to the Random Velocity
• The Gas-Drag Effect on the Orbital Instability of a Protoplanet System
• Stochastic Coagulation Equation and Validity of the Statistical Coagulation Equation
• Correlation of middle latency auditory evoked potentials and cerebral blood flow changes
• Scintigraphic evaluation of testicular torsion and acute epididymitis
• Metastases in Fatty liver: Appearance on Conventional Spin-Echo, Fast-Spin-Echo, and Echo-Planar T_2-Weighted MR Images
• Reirradiation with Local-field Radiotherapy for Painful Bone Metastases
• Multi-fractionated Wide-field Radiation Therapy for Palliation of Multiple Symptomatic Bone Metastases from Solid Tumors
• Field-Induced New Ordered Phase in Triangular Antiferromagnet RbFeCl_3
• Origin of high orbital eccentricity and inclination of asteroids
• Dose Gradient Analyses in Linac-based Intracranial Stereotactic Radiosurgery Using Paddicks Gradient Index: Consideration of the Optimal Method for Plan Evaluation
• Pleomorphic Adenoma of the Trachea: A Case Report
• MR imaging and ^1H-MR spectroscopy in a case of juvenile Alexander disease
• ESR Modes in CsCuCl_3
• S9-1 Remodeling of neural network : involvement of cell adhesion molecules(SYMPOSIUM 9: MOLECULAR MECHANISMS OF DRUG DEPENDENCE)(Proceedings of the 31st Annual Meeting)
• Ground States of Double Spin Chain Systems TlCuCl_3,NH_4CuCl_3 and CuBr_3
• Synthesis and adsorption property of zinc rust of zinc hydroxynitrate
• Modeling and cost-effectiveness analysis of etanercept in adults with rheumatoid arthritis in Japan : a preliminary analysis
• Kinematical Constraints on QCD Factorization in the Drell-Yan Process(Particles and Fields)
• Direct Matrix Diagonalization of Spin Hamiltonian for Cr^ Pair Centre in CsMgCl_3
• High-accuracy statistical simulation of planetary accretion : I. Test of the accuracy by comparison with the solution to the stochastic coagulation equation
• Phase Structure of the SU(3) Gauge-Higgs System.II : Adjoint Higgs : Particles and Fields
• Phase Structure of the SU(3) Gauge-Higgs System. I
• Effect of stirring on the dissolution of coal fly ash and synthesis of pure-form Na-A and-X zeolites by two-step process
• Fixation of alkyl phosphate using waste incineration fly ash
• Analysis of bone mineral density distribution at trabecular bones in thoracic and lumbar vertebrae using X-ray CT images
• Critical Behavior of CsVBr_3 and RbVBr_3
• Dose Gradient Analyses in Linac-based Intracranial Stereotactic Radiosurgery Using Paddick's Gradient Index : Consideration of the Optimal Method for Plan Evaluation
• Usefulness of CT-MRI Fusion in Radiotherapy Planning for Localized Prostate Cancer

もっと見る 閉じる

スポンサーリンク