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List of works by Ricky O'Brien

A six-degree-of-freedom robotic motion system for quality assurance of real-time image-guided radiotherapy

scientific article published on 21 May 2019

An augmented correlation framework for the estimation of tumour translational and rotational motion during external beam radiotherapy treatments using intermittent monoscopic x-ray imaging and an external respiratory signal

scientific article published on 09 October 2018

An in silico performance characterization of respiratory motion guided 4DCT for high-quality low-dose lung cancer imaging

scientific article published on 27 July 2018

An interdimensional correlation framework for real-time estimation of six degree of freedom target motion using a single x-ray imager during radiotherapy.

scientific article

Audiovisual Biofeedback Improves Cine-Magnetic Resonance Imaging Measured Lung Tumor Motion Consistency

scientific article

Audiovisual biofeedback breathing guidance for lung cancer patients receiving radiotherapy: a multi-institutional phase II randomised clinical trial.

scientific article published on 18 July 2015

Audiovisual biofeedback guided breath-hold improves lung tumor position reproducibility and volume consistency

scientific article published on 10 March 2017

Audiovisual biofeedback improves diaphragm motion reproducibility in MRI.

scientific article

Both four-dimensional computed tomography and four-dimensional cone beam computed tomography under-predict lung target motion during radiotherapy

scientific article published on 14 March 2019

DMLC tracking and gating can improve dose coverage for prostate VMAT.

scientific article published in September 2014

Determining appropriate imaging parameters for kilovoltage intrafraction monitoring: an experimental phantom study.

scientific article published on 9 June 2015

Development and commissioning of a full-size prototype fixed-beam radiotherapy system with horizontal patient rotation

scientific article published on 14 February 2019

Dosimetric benefit of DMLC tracking for conventional and sub-volume boosted prostate intensity-modulated arc radiotherapy.

scientific article published on 14 March 2013

Dual cardiac and respiratory gated thoracic imaging via adaptive gantry velocity and projection rate modulation on a linear accelerator: A Proof-of-Concept Simulation Study

scientific article published on 05 July 2019

Electromagnetic-Guided MLC Tracking Radiation Therapy for Prostate Cancer Patients: Prospective Clinical Trial Results.

scientific article published on 6 February 2018

Evaluating reconstruction algorithms for respiratory motion guided acquisition

scientific article published on 02 June 2020

First clinical implementation of audiovisual biofeedback in liver cancer stereotactic body radiation therapy

scientific article published on 6 August 2015

Functional imaging equivalence and proof of concept for image-guided adaptive radiotherapy with fixed gantry and rotating couch.

scientific article published on October 2016

Image quality in thoracic 4D cone-beam CT: a sensitivity analysis of respiratory signal, binning method, reconstruction algorithm, and projection angular spacing

scientific article

Impact of audiovisual biofeedback on interfraction respiratory motion reproducibility in liver cancer stereotactic body radiotherapy

scientific article

Improving thoracic four-dimensional cone-beam CT reconstruction with anatomical-adaptive image regularization (AAIR).

scientific article published on 7 January 2015

In Reply to Dahele and Verbakel

scientific article published on 12 December 2018

Investigating multi-leaf collimator tracking in stereotactic arrhythmic radioablation (STAR) treatments for atrial fibrillation

scientific article published on 28 September 2018

MLC tracking for lung SABR reduces planning target volumes and dose to organs at risk.

scientific article

Multileaf Collimator Tracking Improves Dose Delivery for Prostate Cancer Radiation Therapy: Results of the First Clinical Trial

scientific article published on 17 April 2015

Optimizing 4D cone beam computed tomography acquisition by varying the gantry velocity and projection time interval.

scientific article published on 22 February 2013

Optimizing 4DCBCT projection allocation to respiratory bins.

scientific article published on 5 September 2014

Potential improvements of lung and prostate MLC tracking investigated by treatment simulations.

scientific article published on 25 March 2018

Quality assurance for the clinical implementation of kilovoltage intrafraction monitoring for prostate cancer VMAT.

scientific article published in November 2014

Quantifying the accuracy and precision of a novel real-time 6 degree-of-freedom kilovoltage intrafraction monitoring (KIM) target tracking system

scientific article published on 23 June 2017

Quantifying the image quality and dose reduction of respiratory triggered 4D cone-beam computed tomography with patient-measured breathing.

scientific article published on 24 November 2015

Real-Time 3D Image Guidance Using a Standard LINAC: Measured Motion, Accuracy, and Precision of the First Prospective Clinical Trial of Kilovoltage Intrafraction Monitoring-Guided Gating for Prostate Cancer Radiation Therapy

scientific article published on 17 March 2016

Real-time estimation of prostate tumor rotation and translation with a kV imaging system based on an iterative closest point algorithm

scientific article published on 15 November 2013

Real-time respiratory triggered four dimensional cone-beam CT halves imaging dose compared to conventional 4D CBCT

scientific article published on 27 March 2019

Reducing 4DCBCT imaging time and dose: the first implementation of variable gantry speed 4DCBCT on a linear accelerator.

scientific article published on 5 May 2017

Respiratory motion guided four dimensional cone beam computed tomography: encompassing irregular breathing.

scientific article published on 17 January 2014

Respiratory triggered 4D cone‐beam computed tomography: A novel method to reduce imaging dose ⬇️

scientific article published on April 1, 2013

Review of Real-Time 3-Dimensional Image Guided Radiation Therapy on Standard-Equipped Cancer Radiation Therapy Systems: Are We at the Tipping Point for the Era of Real-Time Radiation Therapy?

scientific article published on 14 April 2018

Stereotactic prostate adaptive radiotherapy utilising kilovoltage intrafraction monitoring: the TROG 15.01 SPARK trial.

scientific article

Technical Note: A novel leaf sequencing optimization algorithm which considers previous underdose and overdose events for MLC tracking radiotherapy

scientific article published in January 2016

Technical Note: In silico and experimental evaluation of two leaf-fitting algorithms for MLC tracking based on exposure error and plan complexity

scientific article published on 04 March 2019

Technical Note: Real-time image-guided adaptive radiotherapy of a rigid target for a prototype fixed beam radiotherapy system

scientific article published on 18 September 2018

Technical Note: The design and function of a horizontal patient rotation system for the purposes of fixed-beam cancer radiotherapy

scientific article published on 15 March 2017

The accuracy and precision of Kilovoltage Intrafraction Monitoring (KIM) six degree-of-freedom prostate motion measurements during patient treatments

scientific article published on 19 February 2018

The first clinical implementation of a real-time six degree of freedom target tracking system during radiation therapy based on Kilovoltage Intrafraction Monitoring (KIM).

scientific article published on 22 March 2017

The first clinical implementation of electromagnetic transponder-guided MLC tracking.

scientific article published on February 2014

The first clinical implementation of real-time image-guided adaptive radiotherapy using a standard linear accelerator

scientific article published on 7 February 2018

The first clinical treatment with kilovoltage intrafraction monitoring (KIM): a real-time image guidance method.

scientific article published in January 2015

The first implementation of respiratory triggered 4DCBCT on a linear accelerator.

scientific article published on 7 April 2016

The impact of leaf width and plan complexity on DMLC tracking of prostate intensity modulated arc therapy

scientific article published on November 2013

Toward the development of intrafraction tumor deformation tracking using a dynamic multi-leaf collimator

scientific article

Towards patient connected imaging with ACROBEAT: Adaptive CaRdiac cOne BEAm computed Tomography

scientific article published on 11 March 2019

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