Preoperative Staging Diagnosis of Colorectal Cancer Based on Multi-Row Spiral CT

Abstract

Colorectal cancer is a common malignant tumor of digestive tract, and its incidence has increased significantly in recent years. The 5-year survival rate of patients with early local colorectal cancer is more than 90%, with local invasion of about 68%, and distant metastasis of less than 10%. Therefore, early diagnosis and early treatment is an effective means for the prevention and treatment of colorectal cancer. At present, X-ray air-barium double contrast radiography and fiberoptic endoscope are most commonly used in the examination of colorectal tumors in the world. These two methods have the advantages of simple operation, intuition and low cost. However, it is limited to judge the depth of tumor invasion, whether to break through the serosa, lymphatic metastasis, and distant metastasis. In this work, it can be confirmed that the measurement of preoperative tumor vascular volume reconstruction density is feasible in the preoperative evaluation of colorectal cancer, it will provide clinicians with more valuable information about preoperative tumor staging. Besides, multi-slice spiral CT has the advantages of less trauma, high speed, and clear image. It can not only judge the location of the tumor, the depth, and extent of tumor invasion, and show distant organ metastasis, but also has good application value in tumor staging. In this paper, the clinical data and MSCT imaging data of patients with colorectal cancer were analyzed retrospectively, and the value of MSCT in the diagnosis of colorectal cancer was discussed.

Interventional Treatment of Bronchiectasis Macrosomia Based on Multirow CT Tomography Monitoring

“…The bronchial artery (BA) is the main trophoblastic vessel of the lung, which delivers blood to the trachea, extra- and intrapulmonary airways, supporting tissues, nerves, oesophagus, lymph nodes, and visceral pleura, and has numerous and cumbersome anastomosing structures with various capillaries at the end of the pulmonary arterial. It is involved during various congenital and acquired conditions in humans, congenital diseases such as bronchopulmonary isolation and pulmonary venous pressure syndrome, and acquired disorders such as tumours and inflammatory diseases [ 1 ]. Because of the significant angiogenic potential of BA, bronchial arteries thicken, twist, and increase blood flow in these conditions, making bronchial circulation a common source of haemoptysis.…”