2021
Deep learning-based GTV contouring modeling inter- and intra- observer variability in sarcomas
Marin T, Zhuo Y, Lahoud R, Tian F, Ma X, Xing F, Moteabbed M, Liu X, Grogg K, Shusharina N, Woo J, Lim R, Ma C, Chen Y, El Fakhri G. Deep learning-based GTV contouring modeling inter- and intra- observer variability in sarcomas. Radiotherapy And Oncology 2021, 167: 269-276. PMID: 34808228, PMCID: PMC8934266, DOI: 10.1016/j.radonc.2021.09.034.Peer-Reviewed Original ResearchConceptsGross tumor volumeRadiation therapy treatment planningGross tumor volume contoursGross tumor volume delineationTherapy treatment planningIntra-observer variabilityConsensus contoursGTV contoursPre-operative CT imagesSoft tissue sarcomasRadiation oncologistsTumor volumeBone sarcomasTreatment planningAccurate contoursCT imagesDelineation procedureSarcomaSoft tissueConfidence levelRadiationPatientsHausdorff distanceMultiple contoursX-rayDetecting lumbar lesions in 99mTc‐MDP SPECT by deep learning: Comparison with physicians
Petibon Y, Fahey F, Cao X, Levin Z, Sexton‐Stallone B, Falone A, Zukotynski K, Kwatra N, Lim R, Bar‐Sever Z, Chemli Y, Treves S, Fakhri G, Ouyang J. Detecting lumbar lesions in 99mTc‐MDP SPECT by deep learning: Comparison with physicians. Medical Physics 2021, 48: 4249-4261. PMID: 34101855, DOI: 10.1002/mp.15033.Peer-Reviewed Original ResearchConceptsSingle-photon emission computed tomographyLow back painLumbar lesionsPediatric patientsTc-MDPEvaluate low back painCause of low back painTc-MDP scanLesion-presentEmission computed tomographyConvolutional neural networkClinical likelihoodBack painInterreader variabilityDeep convolutional neural networkLumbar locationLesionsStress lesionsFocal lesionsDeep learningPatientsLumbar stressPhysiciansDL systemsLROC studies
2016
Imaging the Pediatric Urinary Tract
Traubici J, Lim R. Imaging the Pediatric Urinary Tract. 2016, 3-47. DOI: 10.1007/978-3-662-52972-0_1.Peer-Reviewed Original ResearchUrinary tractWork-up of patientsPediatric urinary tractUrinary tract imagingMagnetic resonance imagingPediatric patientsDifferential diagnosisExcretory urographyComputed tomographyFollow-upAcquired diseasesWork-upContrast fluoroscopyUrinary systemImaging studiesResonance imagingPatientsDiagnosisModalitiesDiseaseTractScintigraphyUrographyFluoroscopySonography
2015
Simplifying size-specific radiation dose estimates in pediatric CT.
Khawaja R, Singh S, Vettiyil B, Lim R, Gee M, Westra S, Kalra M. Simplifying size-specific radiation dose estimates in pediatric CT. American Journal Of Roentgenology 2015, 204: 167-76. PMID: 25539253, DOI: 10.2214/ajr.13.12191.Peer-Reviewed Original ResearchConceptsSize-specific dose estimateStatistically significant correlationDose estimatesBody weightTorso diameterSize-specific doseConsecutive CT examinationsMedian body weightPatient's body weightRadiation dose estimatesSignificant correlationPediatric CTCT examinationsEffective diameterIndividual patientsOverall body weightClinical settingPatientsDoseD(apChildrenAutomated softwareMeasured diameterBodyManual measurements
2014
18F-FMISO PET/CT Visualization of Tumor Hypoxia in Patients With Chordoma of the Mobile and Sacrococcygeal Spine
Cheney M, Chen Y, Lim R, Winrich B, Grosu A, Trofimov A, Depauw N, Shih H, Schwab J, Hornicek F, DeLaney T. 18F-FMISO PET/CT Visualization of Tumor Hypoxia in Patients With Chordoma of the Mobile and Sacrococcygeal Spine. International Journal Of Radiation Oncology • Biology • Physics 2014, 90: s753. DOI: 10.1016/j.ijrobp.2014.05.2187.Peer-Reviewed Original ResearchPhysical Aspects of Pediatric Nuclear Medicine Imaging
Fahey F, Lim R, El-Fakhri G. Physical Aspects of Pediatric Nuclear Medicine Imaging. 2014, 621-643. DOI: 10.1007/978-1-4614-9551-2_27.Peer-Reviewed Original ResearchNuclear medicine imagingReduction of radiation doseMedicine imagingQuality of nuclear medicine imagingNuclear medicine studiesApplications of nuclear medicineClinical resultsRadiation doseImage quality improvementTomographic reconstructionHybrid imagingMedicine studiesPatientsNuclear medicineChildrenReconstruction technique
2008
Renal pyramid echogenicity in ureteropelvic junction obstruction: correlation between altered echogenicity and differential renal function
Chavhan G, Daneman A, Moineddin R, Lim R, Langlois V, Traubici J. Renal pyramid echogenicity in ureteropelvic junction obstruction: correlation between altered echogenicity and differential renal function. Pediatric Radiology 2008, 38: 1068. PMID: 18633607, DOI: 10.1007/s00247-008-0943-5.Peer-Reviewed Original ResearchConceptsDifferential renal functionLoss of corticomedullary differentiationUreteropelvic junction obstructionPoor renal functionCorticomedullary differentiationUreteropelvic junctionRenal functionGroup 1Risk ratioObstructed kidneyGroup 2Increased echogenicityGroup 3Technetium-99m mercaptoacetyltriglycineResultsIn group 1Fisher's exact testAbnormal echogenicityObstructive hydronephrosisExact testTechnetium-99Histological changesRenal pyramidsHigh-frequency transducersEchogenicityPatients
2007
Early Experience With Fluorine-18 Sodium Fluoride Bone PET in Young Patients With Back Pain
Lim R, Fahey F, Drubach L, Connolly L, Treves S. Early Experience With Fluorine-18 Sodium Fluoride Bone PET in Young Patients With Back Pain. Journal Of Pediatric Orthopaedics 2007, 27: 277-282. PMID: 17414009, DOI: 10.1097/bpo.0b013e31803409ba.Peer-Reviewed Original ResearchConceptsPositron emission tomographyBack painYounger patientsPotential sources of back painSource of back painFluorine-18Evaluating young patientsRadiation dosimetryNaF PET scanEnhanced patient throughputPET scansApophyseal injuriesPainTechnetium-99Tracer administrationPatientsRadiation doseSkeletal abnormalitiesPET acquisitionEmission tomographySodium fluorideScintigraphyNinety-fourPatient throughputDosimetry