Objective To explore the technical characteristics and clinical application value of Endosize intelligent surgical planning software in guiding the treatment of Stanford type B aortic dissection(TBAD)with single-branch Castor stent.Methods A retrospective analysis was conducted on the clinical data of 37 patients with TBAD who were manually measured to have insufficient proximal anchoring zones.Preoperative computed tomography angiography(CTA)images of the patients were analyzed using Endosize software for precise endovascular measurements and three-dimensional visual reconstruction of the aortic anatomy in the interventional treatment area.The C-arm angle was preset,and the stent type,size,and surgical pathway were precisely planned.Intraoperatively,digital subtraction angiography(DSA)was used to verify the consistency between the preoperative plan and the actual surgical plan,and the postoperative outcomes and perioperative complications were analyzed.Comprehensive evaluation was performed in combination with early follow-up results.Results The measurement results of the Endosize software were highly consistent with DSA results.Among the 37 patients,3 had sufficient proximal anchoring zones,and 34 had insufficient proximal anchoring zones.The consistency rate between manual measurements and software measurements was 91.89%.All 34 patients with insufficient proximal anchoring zones successfully underwent treatment with single-branch Castor stent.The stent type and size planned preoperatively were completely consistent with those actu-ally used,and the technical success rate was 100%.No adverse events occurred during the perioperative period.The mean follow-up duration was(6.09±4.42)months,with no deaths during this period.All branch stents remained patent,no endoleaks occurred,thrombosis occurred in all of the dissection false lumen,and aortic morphology was remodeled.Conclusion Endosize intelligent surgical planning software can provide detailed preoperative information for endovascular treatment,and it demonstrates significant clinical application value in guiding the treatment of TBAD with insuffi-cient proximal anchoring zones using single-branch Castor stent.

Objective To explore the technical characteristics and clinical application value of Endosize intelligent surgical planning software in guiding the treatment of Stanford type B aortic dissection(TBAD)with single-branch Castor stent.Methods A retrospective analysis was conducted on the clinical data of 37 patients with TBAD who were manually measured to have insufficient proximal anchoring zones.Preoperative computed tomography angiography(CTA)images of the patients were analyzed using Endosize software for precise endovascular measurements and three-dimensional visual reconstruction of the aortic anatomy in the interventional treatment area.The C-arm angle was preset,and the stent type,size,and surgical pathway were precisely planned.Intraoperatively,digital subtraction angiography(DSA)was used to verify the consistency between the preoperative plan and the actual surgical plan,and the postoperative outcomes and perioperative complications were analyzed.Comprehensive evaluation was performed in combination with early follow-up results.Results The measurement results of the Endosize software were highly consistent with DSA results.Among the 37 patients,3 had sufficient proximal anchoring zones,and 34 had insufficient proximal anchoring zones.The consistency rate between manual measurements and software measurements was 91.89%.All 34 patients with insufficient proximal anchoring zones successfully underwent treatment with single-branch Castor stent.The stent type and size planned preoperatively were completely consistent with those actu-ally used,and the technical success rate was 100%.No adverse events occurred during the perioperative period.The mean follow-up duration was(6.09±4.42)months,with no deaths during this period.All branch stents remained patent,no endoleaks occurred,thrombosis occurred in all of the dissection false lumen,and aortic morphology was remodeled.Conclusion Endosize intelligent surgical planning software can provide detailed preoperative information for endovascular treatment,and it demonstrates significant clinical application value in guiding the treatment of TBAD with insuffi-cient proximal anchoring zones using single-branch Castor stent.

Objective ToexploretheMRIfeaturesofgrowthhormonedeficiency(GHD)inchildrenwithshortstaturecausedby pituitarylesions,inordertoimprovethediagnosticlevelofthesediseases.Methods MRIandclinicaldataof624patientsofGHD withshortstaturecausedbypituitarylesionswereretrospectivelyanalyzed.Results Inshortstaturecausedbypituitarylesions,there were383caseswithanteriorpituitarydysplasia(61.4%);49casesofpituitarystalkinterruptionsyndrome(PSIS)(7.9%);16cases ofpituitaryhyperplasiaduetoprimaryhypothyroidism (2.6%);41casesofRathkecleftcyst(6.6%);74casesofemptysellasyndrome(11.9%);17 casesofpituitaryinvasionbyLangerhanscellhistiocytosis(2.7%);2casesofsellarregionalarachnoidcyst(0.3%);and42casesof craniopharyngioma(6.7%).MRIshowedtheheightofanteriorpituitarywaslessthannormal,andthelocation,sizeandsignalsof posteriorpituitaryandpituitarystalkwerenormalinanteriorpituitarydysplasia.Noorthinpituitarystalk,anteriorpituitaryhypoplasiawith ectopicposteriorpituitarywereseeninPSIS.Allofthepituitaryhyperplasiawerecausedbyhypothyroidism,inwhich MRIshowed anteriorpituitaryenlargement,upwardapophysis,obvioushomogeneousenhancement,nopituitarystalkinterruptionandabnormal signal,andthepituitaryglandreducinginsizeafterreplacementtherapy.Stalkhypophysialwasthickeningtogetherwithadisappearanceof hyperintenseoftheposteriorlobeofpituitaryglandonT1,andthesizeandsignalsofanteriorpituitarywerenormalinpituitarybeing invadedbyLangerhanscellhistiocytosis.AtrophyofanteriorpituitarywasseeninRathkecleftcyst,emptysellasyndrome,sellarregionalarachnoid cystandcraniopharyngioma.Conclusion MRIcanclearlyshowtheanatomyofpituitaryandsellarregion,whichcanprovideamorphological referencefortheearlydiagnosisanddifferentialdiagnosisofGHDinchildrenwithshortstaturecausedbypituitarylesions,andisof clinicallyimportantfortreatmentandprognosis.