The Study Of Thin Sections Of The Lumbar Artery, The CTA Cross-section And Its Three-dimensional Reconstruction

Objective1. To get the data set of continuous thin sectional anatomy image ofCVH lumbar artery, and use Mimics software to do its three-dimensionalreconstruction, to observe the morphological characteristics and regularity.2. To collect the normal lumbar artery CT data and do its three-dimensional reconstruction by Mimics software and VR software.3. To build anatomical models of three-dimensional reconstruction of thelumbar artery, to clarify the distribution, path and spatial relationships of thelumbar artery.4. To study comparatively the above two images, to provide someanatomical basis for percutaneous lumbar bleeding and selective lumbarartery infusion of chemotherapy for retroperitoneal tumor, spinal tumors andmetastatic tumors.Materials and methods1. Two cases of CVH data were selected for the segmentation and 3Dreconstruction of their continuous thin sectional images of lumbar artery in order to observe their spatial relationship and their relations with neighbors, tomeasure the distance between the opening of the lumbar artery and theabdominal aorta, to determine if there is any contact in the origin of the leftand right artery.2. Collected normal lumbar artery CT data and did 3D reconstruction.3. Comparative analysis of two models based on the reconstruction ofthin sections of lumbar artery, the CTA cross-section.4. Cases of retroperitoneal tumor and spinal tumors checked withenhanced CT were collected to determine whether the lumbar artery wasinvolved in tumor blood supply so as to offer imaging evidence for selectivelumbar artery embolization for the retroperitoneal tumor. Compare the displayfunction between Mimics software and CT 3D reconstruction software.Results1. The morphological characteristics and the related measurementparameters of the continuous thin layer of lumbar artery and its relationshipwith adjacent structures were obtained.2. CTA cross-section characteristics and related measurement parametersof lumbar artery and its relationship with adjacent structures were obtained.The diameter of the left and right lumbar arteries were also measured.3. The three-dimensional reconstruction model of the lumbar artery based on thin sections imaging with the aid of the Mimics software wasobtained.4. In cases of paravertebral tumor, retroperitoneal tumor and metastaticvertebral tumor, CT, DSA showed increased thick lumbar artery and signs oftumor vessels and tumor staining. Compared with three-dimensional model ofthe lumbar artery of CTA, the more realistic and detailed lumbar artery can bedisplayed by Mimics software.Conclusion1. Thin sections of the lumbar artery and the CTA cross-section candisplay the morphology of the lumbar artery trunk and its travelling,comparative observation of CTA cross-section and thin sections of the lumbarartery proved that the former displayed the lumbar artery and its majorbranches better than the later. The left and right openings of each lumbarartery are symmetrical and constant, it is easy for intervention intubation.2. Lumbar artery and its spatial relationship can be clearly shown inlumbar artery model both based of CTA three-dimensional reconstruction andCVH. Lumbar artery and its organization relationship can be displayed aloneor overall by arbitrary color collocation to show anatomical structure moreconvenient with the help of Mimics software.3. In the case of retroperitoneal tumors, spinal tumors, the three-dimensional reconstruction model displaying lumbar artery and thetumor blood vessels by Mimics software were confirmed better than by CTA，It had more clinical research value, and provided intervention (lumbar arteryperfusion chemotherapy and embolization) and surgical imaging evidence。...