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A novel CT acquisition and analysis technique for breathing motion modeling.
To report on a novel technique for providing artifact-free quantitative four-dimensional computed tomography (4DCT) image datasets for breathing motion modeling. Commercial clinical 4DCT methods haveExpand
Online Adaptive Radiation Therapy: Implementation of a New Process of Care
Onboard magnetic resonance imaging (MRI) guided radiotherapy is now clinically available in nine centers in the world. This technology has facilitated the clinical implementation of online adaptiveExpand
Feasibility evaluation of diffusion-weighted imaging using an integrated MRI-radiotherapy system for response assessment to neoadjuvant therapy in rectal cancer.
OBJECTIVE To evaluate the feasibility of on-board diffusion-weighted imaging (DWI) with an integrated low-field MRI radiotherapy system to assess responses to neoadjuvant chemoradiation (NAC) inExpand
A generalized framework unifying image registration and respiratory motion models and incorporating image reconstruction, for partial image data or full images
Abstract Surrogate-driven respiratory motion models relate the motion of the internal anatomy to easily acquired respiratory surrogate signals, such as the motion of the skin surface. They areExpand
A novel fast helical 4D-CT acquisition technique to generate low-noise sorting artifact-free images at user-selected breathing phases.
PURPOSE To develop a novel 4-dimensional computed tomography (4D-CT) technique that exploits standard fast helical acquisition, a simultaneous breathing surrogate measurement, deformable imageExpand
Longitudinal diffusion MRI for treatment response assessment: Preliminary experience using an MRI-guided tri-cobalt 60 radiotherapy system.
PURPOSE To demonstrate the preliminary feasibility of a longitudinal diffusion magnetic resonance imaging (MRI) strategy for assessing patient response to radiotherapy at 0.35 T using an MRI-guidedExpand
Initial clinical observations of intra- and interfractional motion variation in MR-guided lung SBRT.
OBJECTIVE To evaluate variations in intra- and interfractional tumour motion, and the effect on internal target volume (ITV) contour accuracy, using deformable image registration of real-timeExpand
A Method for Assessing Ground-Truth Accuracy of the 5DCT Technique.
PURPOSE To develop a technique that assesses the accuracy of the breathing phase-specific volume image generation process by patient-specific breathing motion model using the original free-breathingExpand
5D respiratory motion model based image reconstruction algorithm for 4D cone-beam computed tomography
4D cone-beam computed tomography (4DCBCT) reconstructs a temporal sequence of CBCT images for the purpose of motion management or 4D treatment in radiotherapy. However the image reconstruction oftenExpand
Dosimetric validation of a magnetic resonance image gated radiotherapy system using a motion phantom and radiochromic film
  • J. Lamb, J. Ginn, +7 authors D. Low
  • Physics, Medicine
  • Journal of applied clinical medical physics
  • 24 April 2017
Purpose Magnetic resonance image (MRI) guided radiotherapy enables gating directly on the target position. We present an evaluation of an MRI‐guided radiotherapy system's gating performance using anExpand