Classification And Clinical Significance Of The Branching Patterns Of The Pulmonary Arteries Based On The Intravital CT Data

Objective To track and analyze the pulmonary arteries’ branches and study the clinical significance.Methods Technologies of vascular volume rendering are used on the 1000 CT pulmonary angiography images.And three-dimensional display are used to classify the pulmonary arteries.Results According to the 1000 reconstructed results,the right upper lobe segmental arteries are divided into 6 types:"anterior trunk+post ascending artery","anterior trunk","anterior trunk+anterior ascending artery+post ascending artery","anterior trunk+ anterior ascending artery","superior anterior trunk+inferior anterior trunk and "superior anterior trunk+ inferior anterior trunk+post ascending artery".The right middle lobe segmental arteries are divided into 2 types:"one branch" and "two branches".As for the right lower lobe segmental arteries,the apical segmental arteries are divided into 3 types:"one branch","two branches" and "three branches".The basal segmental arteries are divided into 3 types:"medial basal segmental artery+anterior basal segmental artery+lateroposterior basal segmental artery","medioanterior basal segmental artery+lateroposterior basal segmental artery" and "medial basal segmental artery+anterior and lateral basal segmental artery+posterior basal segmental artery".To be specific,"anterior trunk+post ascending artery" type(54.5%)occupies the most in the right upper lobe.The type of "two branches"(67.7%)is the majority of the right middle lobe.And in the right lower lobe,"apical segmental artery of the lower lobe(one branch)+medial basal segmental artery+anterior basal segmental artery+lateroposterior basal segmental artery"type(36.7%)is the majority one.The branching patterns of pulmonary arteries in the left upper lobe are complicated.Pulmonary arteries in the left upper lobe are divided into 17 types according to the ligular pulmonary arteries:" apical and posterior segmental artery+anterior segmental artery+Independent lingular artery-one branch"," apical and posterior segmental artery+anterior segmental artery+Independent lingular artery-two branches "," apical and posterior segmental artery+anterior segmental artery+Combined lingular artery with anterior artery"," apical and anterior segmental artery+posterior segmental artery+Independent lingular artery-one branch"," apical and anterior segmental artery+posterior segmental artery+Independent lingular artery-two branches"," apical and anterior segmental artery+posterior segmental artery+Combined lingular artery with apical and anterior segmental artery"," anterior segmental artery+apical segmental artery+posterior segmental artery+Independent lingular artery-one branch "," anterior segmental artery+apical segmental artery+posterior segmental artery+Independent lingular artery-two branches"," anterior segmental artery+apical segmental artery+posterior segmental artery+Combined lingular artery with anterior segmental artery"," anterior segmental artery+apical and posterior segmental artery+posterior segmental artery+Independent lingular artery-one branch"," apical and anterior segmental artery+anterior segmental artery+posterior segmental artery+Independent lingular artery-one branch”,“apical and anterior segmental artery+apical and posterior segmental artery+Independent lingular artery-one branch"," apical and anterior segmental artery+apical and posterior segmental artery+Independent lingular artery-two branches"," apical and anterior segmental artery combined with posterior segmental artery+Independent lingular artery-one branch","combined apical and anterior segmental artery and lingular artery with same artery trunk of posterior segmental artery "," anterior segmental artery combined with apical and posterior segmental artery+Independent lingular artery-one branch"," combined anterior segmental artery and lingular artery with same artery trunk of apical and posterior segmental arteries".As for the segmental pulmonary arteries in the left lower lobe,the apical segmental arteries are divided into 3 types:"one branch","two branches" and"three branches".The basal segmental arteries are divided into 3 types:"medioanterior basal segmental artery+lateral basal segmental artery+posterior basal segmental artery","medial basal segmental artery+anterior and lateral basal segmental artery+posterior basal segmental artery" and "medioanterior basal segmental artery+lateral basal segmental artery+posterior basal segmental artery".To be specific,"apical and anterior segmental artery+posterior segmental artery+Independent lingular artery-one branch" type(38.6%)occupies the most in the left upper lobe.And in the left lower lobe,"apical artery of the lower lobe(one branch)+medioanterior basal segmental artery+lateroposterior basal segmental artery" type(60.8%)is the majority one.Conclusion The classification of the right pulmonary arteries based on the three dimensional reconstruction of CT pulmonary angiography is of significant to surgical precision therapy of lung tumor.