2017
Guest Editorial Low-Dose CT: What Has Been Done, and What Challenges Remain?
Liang J, La Riviere P, Fakhri G, Glick S, Siewerdsen J. Guest Editorial Low-Dose CT: What Has Been Done, and What Challenges Remain? IEEE Transactions On Medical Imaging 2017, 36: 2409-2416. DOI: 10.1109/tmi.2017.2768978.Peer-Reviewed Original ResearchCone-beam CTMulti-detector row CTDiscovery of X-raysIntroduction of computed tomographyMonitoring of therapeutic responseMulti-detector-rowImage-guided interventionsProjection dataMagnetic resonance imagingPositron emission tomographyTherapeutic responseEmergency examinationTreatment planningVolumetric imagesDiagnostic imagingEmission tomographyImaging modalitiesResonance imagingX-rayMedical imaging modalitiesCTTomographyTomographic imagesPositron
2016
Investigation of cone-beam CT image quality trade-off for image-guided radiation therapy
Bian J, Sharp G, Park Y, Ouyang J, Bortfeld T, Fakhri G. Investigation of cone-beam CT image quality trade-off for image-guided radiation therapy. Physics In Medicine And Biology 2016, 61: 3317-3346. PMID: 27032676, DOI: 10.1088/0031-9155/61/9/3317.Peer-Reviewed Original ResearchConceptsImage-guided radiation therapyCone-beam CTFiltered-backprojectionImage quality trade-offConventional filtered-backprojectionShort-scan reconstructionsFiltered-backprojection algorithmFan-beam reconstructionTV-based algorithmIterative reconstruction algorithmCatphan phantomRadiation therapyAngular rangeTotal-variationOptimal exposure levelClinical scannerScanning configurationReconstruction algorithmImaging conditionsCatphanPhantomExposure levelsTherapyConfigurationRange
2014
Preliminary Investigation of CBCT Imaging Optimization for Image-Guided Radiation Therapy
Bian J, Sharp G, Park Y, Bortfeld T, Fakhri G. Preliminary Investigation of CBCT Imaging Optimization for Image-Guided Radiation Therapy. 2014, 1-4. DOI: 10.1109/nssmic.2014.7430871.Peer-Reviewed Original ResearchImage-guided radiation therapyCone-beam CTCone-beam CT image qualityImprove CBCT image qualityCBCT image qualityCone-beam CT imagesOptimization-based reconstruction algorithmsReduce patient doseImage qualityCBCT dataImages of improved qualityImaging doseReconstruction algorithmIterative reconstruction techniqueASD-POCSImage reconstruction algorithmPatient doseImprove image qualityRadiation therapyDose reductionRadiation doseImage-guidedDosePoor image qualityExposure levels