多探测器计算机断层仪动态增强扫描对孤立性肺部肿块的诊断价值【大学临床医学毕业论文.doc

多探测器计算机断层仪动态增强扫描对孤立性肺部肿块的诊断价值【大学临床医学毕业论文.docnr;临床医学论文-多探测器计算机断层仪动态增强扫描对孤立性肺部肿块的诊断价値作者:陈韵彬,蔡林峰,林孔起,林春浩【摘要】冃的比较良性和恶性孤立性肺部结节或肿块多探测器计算机断层动态增强扫描(MDCIBE)的特点。方法对98例直径<4cm的肺部肿块患者行MDCTDE扫描;92例病理诊断,6例临床随访>1年诊断为良性。平扫后,以4mL/s的速度静脉注入对比剂进行动态增强扫描,连续扫描45s后,每20s扫描一次至205s。测量平扫CT値、强化峰値、到达峰値时间、净强化値、最大相对强化率及强化斜率。结果肺癌的到达峰値时间(35・95±)s短于肺部良性病变〔(±)s,P<〕;肺癌的净强化値(38・00±)Hii小于肺部良性病变〔(±)Hu,P<,其敏感性100%,%朋性预测値100%,%,%。结论MDCTDE扫描对肺部孤立性肿块的定性诊断有一定的价値。体层摄影术,X线计算机;肺肿瘤;诊断ABSTRACT:putedtomographydynamicenhanced(MDCTDE)-eightpatientwithsolitarypulmonarymasses(diameter1~4cm),MDCTDEwereperformedafterintravenousinjectionofcontrastwitharateof4mL/s,essivescanfor45s,subsequentlyscanat65,85,105,125,145,165,(35・95±)swasshorterthanbenign1eisions(±)s(P<).enhancement(±)Huandthemaximumrelativeenhancementratio()oflungcancerweresmallerthanbenignmasses〔average(±),P<0・01〕・When43softimetopeakenhancementasacutoffvalueindifferentiationmalignantandbenignmasses,sensitivityformalignantmasseswas100%,%,negativepredictivevaluewas100%,%%.ConclusionDynamicenhancedMDCTisvaluableinthediagnosisofsolitar