Evaluation of gantry speed on image quality and imaging dose for 4D cone-beam CT acquisition

AP Santoso, KH Song, Y Qin, SJ Gardner, C Liu… - Radiation …, 2016 - Springer
Background This study investigates the effect of gantry speed on 4DCBCT image quality and
dose for the Varian On-Board Imager®. Methods A thoracic 4DCBCT protocol was designed …

Optimizing 4D cone-beam CT acquisition protocol for external beam radiotherapy

T Li, L Xing - International Journal of Radiation Oncology* Biology …, 2007 - Elsevier
Purpose: Four-dimensional cone-beam computed tomography (4D-CBCT) imaging is
sensitive to parameters such as gantry rotation speed, number of gantry rotations, X-ray …

Investigation into image quality and dose for different patient geometries with multiple cone‐beam CT systems

SJ Gardner, MT Studenski, T Giaddui, Y Cui… - Medical …, 2014 - Wiley Online Library
Purpose: To provide quantitative and qualitative image quality metrics and imaging dose for
modern Varian On‐board Imager (OBI)(ver. 1.5) and Elekta X‐ray Volume Imager (XVI)(ver …

Evaluating the four-dimensional cone beam computed tomography with varying gantry rotation speed

SA Yoganathan, KJ Maria Das… - The British Journal of …, 2016 - academic.oup.com
Objective: The purpose of this work was to evaluate the four-dimensional cone beam CT
(4DCBCT) imaging with different gantry rotation speed. Methods: All the 4DCBCT image …

Improving image quality of on-board cone-beam CT in radiation therapy using image information provided by planning multi-detector CT: A phantom study

CC Yang, FL Chen, YC Lo - PLoS One, 2016 - journals.plos.org
Purpose The aim of this study was to improve the image quality of cone-beam computed
tomography (CBCT) mounted on the gantry of a linear accelerator used in radiation therapy …

Four‐dimensional cone beam CT with adaptive gantry rotation and adaptive data sampling

J Lu, TM Guerrero, P Munro, A Jeung, PCM Chi… - Medical …, 2007 - Wiley Online Library
We have developed a new four‐dimensional cone beam CT (4D‐CBCT) on a Varian image‐
guided radiation therapy system, which has radiation therapy treatment and cone beam CT …

The first-in-human implementation of adaptive 4D cone beam CT for lung cancer radiotherapy: 4DCBCT in less time with less dose

RT O'Brien, O Dillon, B Lau, A George, S Smith… - Radiotherapy and …, 2021 - Elsevier
Background and purpose We present the first implementation of Adaptive 4D cone beam CT
(4DCBCT) that adapts the image hardware (gantry rotation speed and kV projections) in …

Quantification of artifact reduction with real-time cine four-dimensional computed tomography acquisition methods

UW Langner, PJ Keall - … Journal of Radiation Oncology* Biology* Physics, 2010 - Elsevier
PURPOSE: To quantify the magnitude and frequency of artifacts in simulated four-
dimensional computed tomography (4D CT) images using three real-time acquisition …

[HTML][HTML] Novel technology allowing cone beam computed tomography in 6 seconds: a patient study of comparative image quality

JL Robar, A Cherpak, RL MacDonald… - Practical Radiation …, 2024 - Elsevier
Purpose The goal of this study was to evaluate the image quality provided by a novel cone
beam computed tomography (CBCT) platform (HyperSight, Varian Medical Systems), a …

[HTML][HTML] Evaluation of a cone-beam computed tomography system calibrated for accurate radiotherapy dose calculation

M Bogowicz, D Lustermans, VT Taasti… - Physics and Imaging in …, 2024 - Elsevier
Background and purpose Dose calculation on cone-beam computed tomography (CBCT)
images has been less accurate than on computed tomography (CT) images due to lower …