目的 探讨双源CT增强扫描结合电影渲染(CR)技术对肺隔离症(PS)的诊断价值,总结分析PS的解剖学特征。 方法 回顾性分析经日照市人民医院确诊的50例PS患者的影像学资料,重建最大密度投影(MIP)图像和CR图像,观察PS的类型、部位、形态密度、并发症情况、供血血管、引流血管,分析供血血管直径与病变体积的相关性。 结果 50例PS的解剖信息均能清晰显示,叶内型(ILS)34例(68%),叶外型(ELS)16例(32%);位于左肺下叶35例(70%)(ILS 25, ELS 10),右肺下叶14例(28%)(ILS 8, ELS 6),双肺下叶1例(ILS)。两种类型PS的分布差异无统计学意义(P>0.05)。PS以囊性为主13例(26%)(ILS),囊实混合性6例(12%)(ILS),实性31例(62%)(ILS 15, ELS 16);伴有并发症34例(68%)(ILS 32, ELS 2)。以上表现,两种类型PS间差异有统计学意义(P<0.05)。胸主动脉供血血管平均直径(5.99±2.15) mm,腹主动脉供血血管平均直径(4.22±0.82) mm;胸主动脉供血PS的平均体积(82.24±31.61) cm3,腹主动脉供血PS的平均体积(106.58±36.92) cm3。差异均有统计学意义(P<0.05)。胸主动脉供血的ILS的血管直径与PS体积呈明显正相关。 结论 不同类型、不同供血来源的PS的解剖学特征和影像学表现有所差异,双源CT增强扫描结合CR技术提供了逼真、立体的三维可视化图像,并清晰显示了PS的血管和肺内解剖特征,可为临床诊断及治疗提供帮助。
Abstract
Objective To explore the diagnostic value of dual-source enhanced CT scanning combined with cinematic rendering (CR) in pulmonary sequestration (PS), and to summarize and analyze the anatomical characteristics of PS. Methods Imaging data of 50 patients diagnosed with PS in Rizhao People's Hospital were retrospectively analyzed, and the maximal intensity projection (MIP) image and CR image were reconstructed. The type, location, morphological density, complications, blood supply vessels and drainage vessels of PS were observed, and the correlation between the diameter of blood supply vessels and the lesion volume was analyzed. Results The anatomical information of all 50 cases of PS could be clearly displayed, including 34 cases (68%) of intralobar sequestration (ILS) and 16 cases (32%) of extralobar sequestration (ELS). 35 cases (70%) were located in the lower lobe of the left lung (ILS 25, ELS 10), 14 cases (28%) in the lower lobe of the right lung (ILS 8, ELS 6), and 1 case (ILS) in the lower lobe of both lungs. There was no significant difference in PS distribution between the two types (P>0.05). PS was mainly cystic in 13 cases (26%) (ILS), mixed cystic and solid in 6 cases (12%) (ILS) and solid in 31 cases (62%) (ILS 15, ELS 16). There were 34 cases with complications (68%)(ILS 32, ELS 2). There were statistically significant differences between the two types of PS (P<0.05). The mean diameter of supplying blood vessels in thoracic aorta and abdominal aorta was (5.99±2.15) mm and (4.22±0.82) mm, respectively. The mean volume of PS supplied by the thoracic aorta was (82.24±31.61) cm3, and the mean volume of PS supplied by the abdominal aorta was (106.58±36.92) cm3. The differences were statistically significant (P<0.05). There was a significantly positive correlation between PS volume and the diameter of intraclobular type of thoracic aorta. Conclusions There are differences in the anatomical features and imaging findings of PS in different types and blood supply sources. Dual-source enhanced CT scanning combined with CR technology can provide realistic and three-dimensional visualization images, and clearly show the vascular and pulmonary anatomic features of PS, which can provide help for clinical diagnosis and treatment.
关键词
肺隔离症 /
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计算机体层成像 /
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增强扫描 /
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电影渲染 /
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解剖学
Key words
Pulmonary sequestration /
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Computed tomography /
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Enhancement scan /
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Cinematic rendering /
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Anatomy
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基金
山东省医药卫生科技发展计划项目(2019WS161);日照市社会科学研究课题(2023087);日照市人民医院自选课题(KYSQ114-2024)