2020
Choice of imaging modality for pre-treatment staging of head and neck cancer impacts TNM staging
Mur T, Sambhu KM, Mahajan A, Payabvash S, Fernandez J, Edwards HA. Choice of imaging modality for pre-treatment staging of head and neck cancer impacts TNM staging. American Journal Of Otolaryngology 2020, 41: 102662. PMID: 32858370, DOI: 10.1016/j.amjoto.2020.102662.Peer-Reviewed Original ResearchConceptsPET/CTLow-dose nonenhanced CTDistant metastasisChest CTNeck cancerNonenhanced CTF-fluorodeoxyglucose positron emission tomographyF-FDG PET/CTDiagnostic chest CTDistant metastatic diseaseInitiation of therapyRetrospective cohort studyPre-treatment stagingTertiary care settingSignificant differencesPositron emission tomographyMetastatic diseaseCohort studyOncologic treatmentTNM stagingInaccurate stagingNeck radiologistsCare settingsSingle patientPatients
2019
White Matter Connectome Edge Density in Children with Autism Spectrum Disorders: Potential Imaging Biomarkers Using Machine-Learning Models
Payabvash S, Palacios E, Owen JP, Wang MB, Tavassoli T, Gerdes M, Brandes-Aitken A, Cuneo D, Marco E, Mukherjee P. White Matter Connectome Edge Density in Children with Autism Spectrum Disorders: Potential Imaging Biomarkers Using Machine-Learning Models. Brain Connectivity 2019, 9: 209-220. PMID: 30661372, PMCID: PMC6444925, DOI: 10.1089/brain.2018.0658.Peer-Reviewed Original Research
2016
The Effects of DWI‐Infarct Lesion Volume on DWI‐FLAIR Mismatch: Is There a Need for Size Stratification?
Payabvash S, Taleb S, Benson JC, Rykken JB, Oswood MC, McKinney AM, Hoffman B. The Effects of DWI‐Infarct Lesion Volume on DWI‐FLAIR Mismatch: Is There a Need for Size Stratification? Journal Of Neuroimaging 2016, 27: 392-396. PMID: 27878926, DOI: 10.1111/jon.12407.Peer-Reviewed Original ResearchConceptsDWI-FLAIR mismatchPositive predictive valueDWI lesion volumeLesion volumeNegative predictive valueStroke onsetAcute infarctsStroke patientsInfarct lesionsPredictive valueFluid-attenuated inversion recovery hyperintensityAcute ischemic stroke patientsInfarct lesion volumeIschemic stroke patientsHours of onsetInversion recovery hyperintensityContralateral normal sideIdentification of strokePotential imaging biomarkerMultivariate regression analysisIdentification of infarctionSymptom onsetTherapy timeNormal sideImaging biomarkersCT Perfusion in Acute Lacunar Stroke: Detection Capabilities Based on Infarct Location
Benson JC, Payabvash S, Mortazavi S, Zhang L, Salazar P, Hoffman B, Oswood M, McKinney AM. CT Perfusion in Acute Lacunar Stroke: Detection Capabilities Based on Infarct Location. American Journal Of Neuroradiology 2016, 37: 2239-2244. PMID: 27538902, PMCID: PMC7963880, DOI: 10.3174/ajnr.a4904.Peer-Reviewed Original Research
2015
Differentiation of benign from malignant cervical lymph nodes in patients with head and neck cancer using PET/CT imaging
Payabvash S, Meric K, Cayci Z. Differentiation of benign from malignant cervical lymph nodes in patients with head and neck cancer using PET/CT imaging. Clinical Imaging 2015, 40: 101-105. PMID: 26454617, DOI: 10.1016/j.clinimag.2015.09.001.Peer-Reviewed Original ResearchMeSH KeywordsDiagnosis, DifferentialFemaleFluorodeoxyglucose F18Head and Neck NeoplasmsHumansImage-Guided BiopsyLymph NodesLymphatic DiseasesLymphatic MetastasisMaleMiddle AgedMultimodal ImagingNeckPositron-Emission TomographyRadiopharmaceuticalsRetrospective StudiesSensitivity and SpecificityTomography, X-Ray ComputedConceptsHead/neck cancerCervical lymph nodesMalignant cervical lymph nodesLymph nodesNeck cancerPositron emission tomographySUV maxHigh maximum standardized uptake valueBenign cervical lymph nodesMaximum standardized uptake valueLymph node biopsyMalignant lymph nodesMalignant cervical lymphadenopathyPET/CT imagingStandardized uptake valueSUV max valuesShort-axis diameterCervical lymphadenopathyNode biopsyMalignant lymphadenopathyRetrospective studyPatientsUptake valueEmission tomographyCancer
2013
Screening and detection of blunt vertebral artery injury in patients with upper cervical fractures: The role of cervical CT and CT angiography
Payabvash S, McKinney AM, McKinney ZJ, Palmer CS, Truwit CL. Screening and detection of blunt vertebral artery injury in patients with upper cervical fractures: The role of cervical CT and CT angiography. European Journal Of Radiology 2013, 83: 571-577. PMID: 24355656, DOI: 10.1016/j.ejrad.2013.11.020.Peer-Reviewed Original ResearchConceptsBlunt vertebral artery injuryVertebral artery injuryUpper cervical fracturesCervical fracturesSymptomatic strokeArtery injuryTrauma patientsBlunt trauma patientsPosterior circulation strokeScreening criteriaStrong interobserver agreementCervical CTCervical CTAUnderwent CTAClinical recordsNegative CTATransverse foramenCT angiographyCTA studiesClinical utilityPatientsInterobserver agreementC3-C7StrokeNECT
2012
Malignant CTA Collateral Profile Is Highly Specific for Large Admission DWI Infarct Core and Poor Outcome in Acute Stroke
Souza LC, Yoo AJ, Chaudhry ZA, Payabvash S, Kemmling A, Schaefer PW, Hirsch JA, Furie KL, González RG, Nogueira RG, Lev MH. Malignant CTA Collateral Profile Is Highly Specific for Large Admission DWI Infarct Core and Poor Outcome in Acute Stroke. American Journal Of Neuroradiology 2012, 33: 1331-1336. PMID: 22383238, PMCID: PMC3888794, DOI: 10.3174/ajnr.a2985.Peer-Reviewed Original ResearchConceptsDWI lesion volumeLesion volumeDWI volumeNIHSS scorePoor outcomeHigher median NIHSS scoresROC analysisDWI lesion sizeLarger DWI volumeMedian NIHSS scoreAcute stroke treatmentAdmission NIHSS scoreOnly independent predictorPoor functional outcomeIntracranial ICA occlusionCTA collateralsAcute strokeICA occlusionProximal occlusionIndependent predictorsStroke treatmentInfarct sizeClinical variablesFunctional outcomeInfarct core
2011
Cranial CT with Adaptive Statistical Iterative Reconstruction: Improved Image Quality with Concomitant Radiation Dose Reduction
Rapalino O, Kamalian S, Kamalian S, Payabvash S, Souza LC, Zhang D, Mukta J, Sahani DV, Lev MH, Pomerantz SR. Cranial CT with Adaptive Statistical Iterative Reconstruction: Improved Image Quality with Concomitant Radiation Dose Reduction. American Journal Of Neuroradiology 2011, 33: 609-615. PMID: 22207302, PMCID: PMC8050448, DOI: 10.3174/ajnr.a2826.Peer-Reviewed Original ResearchConceptsHead CTRadiation dose reductionAdult head CTBlinded qualitative analysisHigh-dose onesUse of ASIRCT radiation dose reductionASIR levelsHounsfield unit measurementsAdult patientsLow-dose scansBrain parenchymaCranial CTRoutine doseLow radiation dosesDose reductionCT scanLow-dose CT datasetAdaptive statistical iterative reconstructionPatient healthASIR reconstructionNormal GMsCTDose scansGM-WM differentiationCT Perfusion Mean Transit Time Maps Optimally Distinguish Benign Oligemia from True “At-Risk” Ischemic Penumbra, but Thresholds Vary by Postprocessing Technique
Kamalian S, Kamalian S, Konstas AA, Maas MB, Payabvash S, Pomerantz SR, Schaefer PW, Furie KL, González RG, Lev MH. CT Perfusion Mean Transit Time Maps Optimally Distinguish Benign Oligemia from True “At-Risk” Ischemic Penumbra, but Thresholds Vary by Postprocessing Technique. American Journal Of Neuroradiology 2011, 33: 545-549. PMID: 22194372, PMCID: PMC3746025, DOI: 10.3174/ajnr.a2809.Peer-Reviewed Original ResearchConceptsAcute stroke patientsLarge vessel occlusionBenign oligemiaStroke patientsIschemic penumbraCTP parametersRelative cerebral blood flowConsecutive stroke patientsHours of onsetCerebral blood flowMean transit time mapsCharacteristic curve analysisTransit time mapsUninvolved hemisphereRadiographic evidenceThrombolytic therapyFinal infarctVessel occlusionRelative MTTBlood flowCTP mapsPerfusion parametersOligemiaReperfusionPatients
2010
Predicting Language Improvement in Acute Stroke Patients Presenting with Aphasia: A Multivariate Logistic Model Using Location-Weighted Atlas-Based Analysis of Admission CT Perfusion Scans
Payabvash S, Kamalian S, Fung S, Wang Y, Passanese J, Kamalian S, Souza LC, Kemmling A, Harris GJ, Halpern EF, González RG, Furie KL, Lev MH. Predicting Language Improvement in Acute Stroke Patients Presenting with Aphasia: A Multivariate Logistic Model Using Location-Weighted Atlas-Based Analysis of Admission CT Perfusion Scans. American Journal Of Neuroradiology 2010, 31: 1661-1668. PMID: 20488905, PMCID: PMC3640318, DOI: 10.3174/ajnr.a2125.Peer-Reviewed Original ResearchMeSH KeywordsAlgorithmsAphasiaBrainComputer SimulationFemaleHumansLogistic ModelsMaleModels, NeurologicalMultivariate AnalysisPattern Recognition, AutomatedPerfusion ImagingPrognosisRadiographic Image Interpretation, Computer-AssistedReproducibility of ResultsSensitivity and SpecificityStrokeSubtraction TechniqueTomography, X-Ray ComputedConceptsBrain CTPNIHSS scoreStroke onsetFunctional outcomeFirst-time ischemic strokeProximal cerebral artery occlusionMultiple logistic regression analysisMultivariate logistic regression modelMultivariate modelDischarge NIHSS scoreTotal NIHSS scoreAcute stroke patientsCerebral artery occlusionTime of dischargeCT perfusion imagingLogistic regression analysisMultivariate logistic modelCT perfusion scansLogistic regression modelsAdmission CTAArtery occlusionInfarct volumeIschemic strokeClinical predictorsConsecutive patients