2023
Association of Body Mass Index and Waist Circumference With Imaging Metrics of Brain Integrity and Functional Connectivity in Children Aged 9 to 10 Years in the US, 2016-2018
Kaltenhauser S, Weber C, Lin H, Mozayan A, Malhotra A, Constable R, Acosta J, Falcone G, Taylor S, Ment L, Sheth K, Payabvash S. Association of Body Mass Index and Waist Circumference With Imaging Metrics of Brain Integrity and Functional Connectivity in Children Aged 9 to 10 Years in the US, 2016-2018. JAMA Network Open 2023, 6: e2314193. PMID: 37200030, PMCID: PMC10196880, DOI: 10.1001/jamanetworkopen.2023.14193.Peer-Reviewed Original ResearchConceptsBody mass indexHigher body mass indexWaist circumferenceBMI z-scoreCross-sectional studyBrain healthCross-sectional analysisFunctional connectivityMass indexMean ageInterval developmentCorpus callosumAssociation of BMIHigher baseline body mass indexBaseline cross-sectional analysisBaseline body mass indexBrain integrityResting-state functional connectivityLongitudinal analysisFuture treatment trialsABCD studyLower microstructural integrityCognitive Development StudyAdolescent Brain Cognitive Development (ABCD) studyCardiovascular implications
2018
Volumetric voxelwise apparent diffusion coefficient histogram analysis for differentiation of the fourth ventricular tumors
Payabvash S, Tihan T, Cha S. Volumetric voxelwise apparent diffusion coefficient histogram analysis for differentiation of the fourth ventricular tumors. The Neuroradiology Journal 2018, 31: 554-564. PMID: 30230411, PMCID: PMC6243467, DOI: 10.1177/1971400918800803.Peer-Reviewed Original ResearchDifferentiation of Cerebellar Hemisphere Tumors: Combining Apparent Diffusion Coefficient Histogram Analysis and Structural MRI Features
Payabvash S, Tihan T, Cha S. Differentiation of Cerebellar Hemisphere Tumors: Combining Apparent Diffusion Coefficient Histogram Analysis and Structural MRI Features. Journal Of Neuroimaging 2018, 28: 656-665. PMID: 30066449, DOI: 10.1111/jon.12550.Peer-Reviewed Original Research
2013
Variable Selection and Prediction Using a Nested, Matched Case-Control Study: Application to Hospital Acquired Pneumonia in Stroke Patients
Qian J, Payabvash S, Kemmling A, Lev MH, Schwamm LH, Betensky RA. Variable Selection and Prediction Using a Nested, Matched Case-Control Study: Application to Hospital Acquired Pneumonia in Stroke Patients. Biometrics 2013, 70: 153-163. PMID: 24320930, PMCID: PMC3954429, DOI: 10.1111/biom.12113.Peer-Reviewed Original ResearchConceptsMassachusetts General HospitalCase-control studyStroke patientsAcute ischemic stroke patientsBrain regionsMatched Case-Control StudyHospital-Acquired PneumoniaIschemic stroke patientsLarge prospective studiesUnconditional logistic regressionCase-control designSpecific brain regionsAcquired PneumoniaAcute infarctionClinical featuresProspective studyClinical variablesGeneral HospitalEpidemiologic studiesPatientsModern imagingLarger studyLogistic regressionAppropriate statistical analysisHAP studiesScreening 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
2007
Laparoscopic Antegrade Continent Enema through VQ Stoma Skin Flaps Using Two Ports Long-Term Follow-Up
Kajbafzadeh AM, Sina AR, Moradi A, Payabvash S, Baharnoori M, Vejdani K. Laparoscopic Antegrade Continent Enema through VQ Stoma Skin Flaps Using Two Ports Long-Term Follow-Up. Journal Of Endourology 2007, 21: 78-82. PMID: 17263614, DOI: 10.1089/end.2006.0190.Peer-Reviewed Original ResearchConceptsAntegrade continent enemaSkin flapsLaparoscopic appendicostomyExcellent cosmetic appearanceStoma reconstructionBowel incontinenceIntractable constipationPeritoneal insufflationMcBurney's pointMinimal complicationsCosmetic appearancePeritoneal cavityDirect visionEnemaPatientsFlapConstipationAppendicostomySurgeryRapid recoveryAbdominal surfaceIrrigation regimenDistal tipChildrenFirst port
2006
Intravesical injection of botulinum toxin type A: Management of neuropathic bladder and bowel dysfunction in children with myelomeningocele
Kajbafzadeh AM, Moosavi S, Tajik P, Arshadi H, Payabvash S, Salmasi AH, Akbari HR, Nejat F. Intravesical injection of botulinum toxin type A: Management of neuropathic bladder and bowel dysfunction in children with myelomeningocele. Urology 2006, 68: 1091-1096. PMID: 17113899, DOI: 10.1016/j.urology.2006.05.056.Peer-Reviewed Original ResearchConceptsMaximal detrusor pressureClean intermittent catheterizationMaximal bladder capacityBowel dysfunctionBotulinum toxin ANeuropathic bladderIntermittent catheterizationBladder capacityDetrusor pressureToxin AMean maximal detrusor pressureBotulinum toxin type AVesicoureteral reflux gradeConventional urodynamic studiesToxin type ATreatment of childrenIncontinence gradeDetrusor hyperreflexiaUrine incontinenceIntravesical injectionReflux gradeUrodynamic studiesDetrusor muscleVesicoureteral refluxCystoscopic guidance