[go: up one dir, main page]

Li et al., 2012 - Google Patents

Implementation of dual‐energy technique for virtual monochromatic and linearly mixed CBCTs

Li et al., 2012

Document ID
1773788503936073460
Author
Li H
Giles W
Ren L
Bowsher J
Yin F
Publication year
Publication venue
Medical physics

External Links

Snippet

Purpose: To implement dual‐energy imaging technique for virtual monochromatic (VM) and linearly mixed (LM) cone beam CTs (CBCTs) and to demonstrate their potential applications in metal artifact reduction and contrast enhancement in image‐guided radiation therapy …
Continue reading at aapm.onlinelibrary.wiley.com (other versions)

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computerised tomographs
    • A61B6/032—Transmission computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/48—Diagnostic techniques
    • A61B6/482—Diagnostic techniques involving multiple energy imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4064—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis adapted for producing a particular type of beam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4007—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis characterised by using a plurality of source units
    • A61B6/4014—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis characterised by using a plurality of source units arranged in multiple source-detector units
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4291—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis the detector being combined with a grid or grating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating devices for radiation diagnosis
    • A61B6/582—Calibration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/50—Clinical applications
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating

Similar Documents

Publication Publication Date Title
Hua et al. Accuracy of electron density, effective atomic number, and iodine concentration determination with a dual‐layer dual‐energy computed tomography system
Mail et al. The influence of bowtie filtration on cone‐beam CT image quality
Graham et al. Compensators for dose and scatter management in cone‐beam computed tomography
Siewerdsen et al. The influence of antiscatter grids on soft‐tissue detectability in cone‐beam computed tomography with flat‐panel detectors: antiscatter grids in cone‐beam CT
Kinahan et al. X-ray-based attenuation correction for positron emission tomography/computed tomography scanners
Zhu et al. Scatter correction for cone‐beam CT in radiation therapy
Niu et al. Scatter correction for full‐fan volumetric CT using a stationary beam blocker in a single full scan
Jarry et al. Characterization of scattered radiation in kV CBCT images using Monte Carlo simulations
Li et al. Implementation of dual‐energy technique for virtual monochromatic and linearly mixed CBCTs
Persson et al. Upper limits of the photon fluence rate on CT detectors: case study on a commercial scanner
Wu et al. Metal artifact correction for x‐ray computed tomography using kV and selective MV imaging
Dauvergne et al. Monte Carlo comparison of x-ray and proton CT for range calculations of proton therapy beams
Yagi et al. Gemstone spectral imaging: determination of CT to ED conversion curves for radiotherapy treatment planning
Sechopoulos X‐ray scatter correction method for dedicated breast computed tomography
Ren et al. Feasibility study of as ynchronized‐mo ving‐g rid (SMOG) system to improve image quality in cone‐beam computed tomography (CBCT)
Mail et al. An empirical method for lag correction in cone‐beam CT
Mettivier et al. Cone‐beam breast computed tomography with a displaced flat panel detector array
Maltz et al. Focused beam‐stop array for the measurement of scatter in megavoltage portal and cone beam CT imaging
Yao et al. Image quality comparison between single energy and dual energy CT protocols for hepatic imaging
Steidel et al. Dose reduction potential in diagnostic single energy CT through patient‐specific prefilters and a wider range of tube voltages
Lazos et al. Monte Carlo evaluation of scatter mitigation strategies in cone‐beam CT
Schmidt et al. Region‐of‐interest material decomposition from truncated energy‐resolved CT
Li et al. Generation of virtual monochromatic CBCT from dual kV/MV beam projections a
Weigel et al. Spectral optimization for dedicated breast CT
Paudel et al. Evaluation of metal artifacts in MVCT systems using a model based correction method