The Use of CT Imaging Technology in Peripherally Inserted Central Catheter

Objective: The objective is to explore the application of computed X-ray tomography (CT) imaging technology in peripherally inserted central catheter (PICC), and to propose a more effective method for PICC catheterization. Method: In this study, 69 subjects are divided into the observation group (X-ray and CT) and the control group (X-ray). The guiding effect of CT images on PICC tube placement in complex cases is compared. In this study, CT localization of the superior vena cava–caval-atrial junction (CAJ) is used as the gold standard. The position relationship of carina-CAJ and carina-PICC catheter tip is measured and analyzed by CT image and chest radiography (CXR) image, providing scientific basis for PICC tip imaging. Results: After this study, the tip of the catheter should be 1/3 of the middle and lower part of the superior vena cava, about 3 cm above the junction of the right atrium and the superior vena cava, and in the upper part of the diaphragm of the inferior vena cava, so that it cannot enter the right ventricle or the right atrium. The best position of the tip of the catheter is near the junction of the superior vena cava and the right atrium. The average vertical distance between the tracheal carina and CAJ is 4.79 cm. Conclusion: CT and X-ray examination can effectively determine the location of the tip of PICC catheter in cancer chemotherapy patients, but the clarity of X-ray examination is missing. It is suggested to adopt CT examination, and further adopt and promote it.