2022
Age‐related topographic map of magnetic resonance diffusion metrics in neonatal brains
Bobba PS, Weber CF, Mak A, Mozayan A, Malhotra A, Sheth KN, Taylor SN, Vossough A, Grant PE, Scheinost D, Constable RT, Ment LR, Payabvash S. Age‐related topographic map of magnetic resonance diffusion metrics in neonatal brains. Human Brain Mapping 2022, 43: 4326-4334. PMID: 35599634, PMCID: PMC9435001, DOI: 10.1002/hbm.25956.Peer-Reviewed Original ResearchConceptsGestational ageCerebellar white matterWhite matterNeonatal brainDiffusion-weighted imagingCorpus callosumMD valuesCorpus callosum myelinationLower gestational ageTerm-equivalent ageSubcortical white matterFA/MDApparent diffusion coefficient (ADC) valuesMonths of ageDiffusion tensor imaging (DTI) metricsDiffusion metricsAge-related evolutionAge-related changesAge-specific normative valuesNeonatal ageBrain parenchymaCorticospinal tractNeonate brainDiffusivity metricsADC values
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 Research
2008
Application of magnetic resonance urography in diagnosis of congenital urogenital anomalies in children
Payabvash S, Kajbafzadeh AM, Saeedi P, Sadeghi Z, Elmi A, Mehdizadeh M. Application of magnetic resonance urography in diagnosis of congenital urogenital anomalies in children. Pediatric Surgery International 2008, 24: 979. PMID: 18668256, DOI: 10.1007/s00383-008-2196-7.Peer-Reviewed Original ResearchMeSH KeywordsChildChild, PreschoolFemaleHumansInfantMagnetic Resonance ImagingMaleRetrospective StudiesUrogenital AbnormalitiesUrographyConceptsMagnetic resonance urographyRenal nuclide scanCongenital urogenital anomaliesUrogenital anomaliesConventional imaging modalitiesUrinary tractNuclide scanJunction obstructionConventional intravenous urographyVesicoureteral junction obstructionPosterior urethral valvesImaging modalitiesUreteropelvic junction obstructionSoft tissue lesionsReliable noninvasive techniqueUrethral valvesEctopic kidneyIntravenous urographySurgical findingsMean ageFinal diagnosisUseful adjuvantCongenital anomaliesPolycystic kidneysMRU technique
2007
Myocyte Apoptosis in Primary Obstructive Megaureters: The Role of Decreased Vascular and Neural Supply
Payabvash S, Kajbafzadeh AM, Tavangar SM, Monajemzadeh M, Sadeghi Z. Myocyte Apoptosis in Primary Obstructive Megaureters: The Role of Decreased Vascular and Neural Supply. Journal Of Urology 2007, 178: 259-264. PMID: 17499782, DOI: 10.1016/j.juro.2007.03.054.Peer-Reviewed Original ResearchConceptsPrimary obstructive megaureterObstructive megaureterNumber of microvesselsUreteral endingsApoptosis indexVesicoureteral junctionNerve endingsStudy groupMuscular componentNormal controlsMyocyte apoptosisCD31-positive microvesselsCollagen fibersFunctional obstructionNeural supplyUreteral reimplantationPositive microvesselsMicrovessel densityNerve supplyNerve terminalsDefective vascular developmentMegaureterNeural elementsTissue specimensConnective tissueEvolution of Endoscopic Management of Ectopic Ureterocele: A New Approach
Kajbafzadeh A, Salmasi AH, Payabvash S, Arshadi H, Akbari HR, Moosavi S. Evolution of Endoscopic Management of Ectopic Ureterocele: A New Approach. Journal Of Urology 2007, 177: 1118-1123. PMID: 17296426, DOI: 10.1016/j.juro.2006.11.001.Peer-Reviewed Original ResearchConceptsEctopic ureteroceleTotal success rateGroup 2Group 1Ureterocele moietyEndoscopic treatmentVesicoureteral refluxUreterocele incisionUreterocele punctureSingle punctureDouble punctureNew onset vesicoureteral refluxConcomitant vesicoureteral refluxOpen surgical interventionNew endoscopic approachDouble J stentDifferent endoscopic modalitiesSuccess rateTreatment of childrenCommon endoscopic treatmentEndoscopic injectionSingle centerSurgical interventionEndoscopic modalitiesEndoscopic managementLaparoscopic 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 guidanceSmooth Muscle Cell Apoptosis and Defective Neural Development in Congenital Ureteropelvic Junction Obstruction
Kajbafzadeh AM, Payabvash S, Salmasi AH, Monajemzadeh M, Tavangar SM. Smooth Muscle Cell Apoptosis and Defective Neural Development in Congenital Ureteropelvic Junction Obstruction. Journal Of Urology 2006, 176: 718-723. PMID: 16813927, DOI: 10.1016/j.juro.2006.03.041.Peer-Reviewed Original Research