【正文】 erplasia within lesions is the main contributing factor to type III and IV vascular morphological changes. the formation mechanism of VCS, leading to the conclusion that the course of adjacent vessels is subject to lesions, especially when diseases infiltrate the bronchiovascular bundle and interlobular septa,第三十三頁，共四十頁。,A further examination of the correlation between vascular categories and GGNs with type III and IV relationships did not generate any significant results (p =0.70).,第二十六頁，共四十頁。5.6 mm and 14.8177。,the GGNvessel relationships were categorized into four types according to imaging features: type I (passby), vessels passed by GGNs without detectable supplying branches to lesions.,type I,第十五頁，共四十頁。 2 papillarypredominant adenocarcinomas and 1 solid predominant with mucin粘蛋白(d224。,Materials and methods,Patients The imaging data of patients with pulmonary GGNs receiving thinsection multidetector CT examination at our hospital in January 2011 through November 2012 were retrospectively reviewed. All lesions were solitary and most of them(104/108) surgically resected within 2 weeks after CT scanning.,第七頁，共四十頁。,Abstract,Objective : To investigate the relationships between pulmonary groundglass nodules (GGN) and blood vessels and their diagnostic values in differentiating GGNs. Conclusion : Different GGNs have different relationships with vessels. Understanding and recognising characteristic GGNvessel relationships may help identify which GGNs are more likely to be malignant.,第二頁，共四十頁。12.89 years (range, 22 to 79 years). 43 patients were asymptomatic, 28 had respiratory symptoms, and 37 had lung cancer risk factors, such as smoking and family history.,第九頁，共四十頁。,CT imaging analysis,protocol parameters: 0.625mm section width with a 0.625mm reconstruction interval, pitch of 0.984, 120 kV and 250 mA. All images were reviewed with a highresolution , 2,0481,560pixel ,standard lung window (ww , 1,500 HU。,type IV (complicated), more complicated vasculature other than described in the aforementioned types within GGNs, for instance, coexistence of irregular vascular dilation and vascular convergence from multiple supplying vessels.,第十八頁，共四十頁。,Correlations between GGNvessel relationships and pathological findings Of 108 GGNs, type I, II, III and IV GGN vessell relationships were observed in 9, 58, 21 and 20 cases, respectively. the type II GGNvessel relationship was the dominant relationship in each pathological group, seen in 9 benign (90.0 %), 16 preinvasive (66.7 %) and 33 invasive (44.6 %) GGN cases.,第二十二頁，共四十頁。 thus, it is important to be familiar with the characteristics of GGNs with malignant potential, as timely surgical resection will improve patient survival and quality of life, and for patients with benign GGNs, unnecessary surgical procedures can be avoided.,第二十八頁，共四十頁。,Type III vascular morphological changes were observed more often in the IAC than MIA subgroup, indicating that with increasing malignancy, fibre hyperplasia stimulated by malignant tissues may become more severe, and subsequently impacts on vasculature become aggravated. Further more， tumour metabolism is faster than in normal tissues。ng)總結,Multidetector spiral CT study of the relationships between pulmonary groundglass nodules and blood vessels。,A ma