Fig. 3
From: Dual-energy computed tomography in the early evaluation of acute radiation pneumonia
Male/64 years old, middle segment esophageal cancer; a Dual-energy lung window image before radiotherapy, the NIC value of the right middle lung is 0.297; b Lung PBV color image before radiotherapy, blood flow (red part) is more abundant in bilateral irradiated fields; c Dual-energy lung window image after radiotherapy, the NIC value of the right middle lung is 0.162; d Lung PBV color image after radiotherapy, blood flow (red part) is less than before; e CT image during follow-up period, ARP is seen in both lungs; f TPS transverse localization image, the irradiation range was within the red line, and ARP is seen in the irradiation areas of V> 20 Gy, V10-20 Gy, and V5-10 Gy