3.5. Dynamic Changes of Chest CT Imaging, DD and CTA in COVID-19 Patients
At the early stage of the disease, the correlation between CT imaging changes and DD value was not obvious; however, with the progression of the disease, the change of CT was closely related to the increase of DD value, and there was a significant statistical difference (Table 4).
The clinical observation showed that the abnormal coagulation factor was consistent with the CT imaging results. In this paper, a typical patient was taken as an example. The dynamic changes of chest CT imaging and DD were consistent (Figure 2(a)). Increased DD was associated with pulmonary embolism, which was confirmed by CTA (Figure 2(b)).