基于非增强计算机断层扫描预判输尿管结石嵌顿的研究进展

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ABSTRACT：Impacted ureteral stones present unique anatomical characteristics and surgical complexities，making them a significan factorinpost-operativeureteralstricturefolowing stoneremoval.Efectivepreoperativediagnosiscanhelpavoidor reduce complicationsasociated with impactedureteralstonesandfacilitate targeted treatmentselectionNon-contrastcomputed tomography（NCCT）has emerged as thegold standardfordiagnosing impacted ureteral stones duetoits high sensitivityand specificity.Several studies havedemonstratedthatindicators derived from NCCT，such asstone volumeand size，the extentand areaofhydronephrosis，ureteralwallthickness，ureteralwallarea，diameterratiosof theuretersegmentsboveandbelowthe stone，adCTvalueratios，posesstrong prognosis capabiliesforimpacted stones.Thispaperreviews therelevantliterature to summarize NCCT-based predictive methods，models，and scoring systems for impacted ureteral stones，aiming to provide reference for clinical practice.

KEY WORDS：impacted ureteral stones；non-contrast computed tomography； prediction model； extent of hydronephrosisureteral wall thickness；ureteral wall area；ureteral stricture

摘要：嵌顿性输尿管结石的局部解剖结构特殊且手术操作复杂，是导致输尿管结石术后输尿管狭窄的重要因素。（剩余10191字）