Objective: To explore the significance of dual-energy CT non-linear fusion technique in improving the quality of CTA image of renal cancer. Methods: The CTA images of 100 patients who had been confirmed by pathology a...Objective: To explore the significance of dual-energy CT non-linear fusion technique in improving the quality of CTA image of renal cancer. Methods: The CTA images of 100 patients who had been confirmed by pathology as renal cancer were collected and were randomly divided into experimental group and control group with 50 cases respectively. The two groups of patients were treated with iodine concentration of 300 mg/ml and 350 mg/ml non-ionic contrast agent, with a dosage of 1.5 ml/kg and an injection rate of 4 ml/s. The contrast agent intelligently tracking method was adopted bolus. The control group used the conventional CTA scanning, with a reference tube voltage/tube current of 100 kv/ref150 mas. The experimental group adopted the double energy scanning, with ball tube A and ball tube B. The reference tube voltage/tube current was 100 kv/ref250 mas and sn150 kv/ref125 mas respectively. The images of the experimental group were non-linear fused to obtain the Mono+ 55 kev single-energy images. The CT value, SNR contrast ratio of the abdominal aorta, renal artery and tumor tissue of the experimental group images and the 100 KV images and the Mono+ 55 kev images of the control group were compared. The objective evaluation and subjective evaluation of the image quality of the three groups of images was performed. Results: The results showed that the 100 kV images of the experimental group were statistically different from those of the control group (P05) in CT value, SNR and CNR (P 0.05). And there was no statistically significant difference between the non-linear fusion single-energy Mono+ 55 kev images and the control group images in CT value, SNR and CNR (P > 0.05). The subjective evaluation of image quality showed that there was no significant difference between Mono+ 55 kev images and control group images, and the quality of Mono+ 55 kev images was higher than that of experimental group 100 kV images. Conclusion: The dual-energy CT non-linear fusion technique can improve the quality of CTA image in patients with renal cancer, and it is possible to obtain high quality CTA images with low iodine concentration contrast agent.展开更多
目的探讨双源CT定量成像技术对肺癌患者术后肺功能改变的临床应用价值。方法选取2016年3月～2018年3月行单操作孔胸腔镜下肺叶或全肺切除治疗的肺癌患者30例为观察对象。分别于术前7 d以及术后3个月采用Vmax Series V6200 Autobox型肺...目的探讨双源CT定量成像技术对肺癌患者术后肺功能改变的临床应用价值。方法选取2016年3月～2018年3月行单操作孔胸腔镜下肺叶或全肺切除治疗的肺癌患者30例为观察对象。分别于术前7 d以及术后3个月采用Vmax Series V6200 Autobox型肺功能仪器检测所有患者的肺功能情况。此外,对所有患者予以双源CT定量成像技术扫描,分析患者CT容积扫描、肺密度指标和肺功能的相关性。同时,分析不同肺叶吸气相与术后肺功能的相关性。结果通过Pearson相关性分析发现:Vin、Vex、Vin-Vex、MLDin(HU)、MLDex(HU)、MLDin-MLDex(HU)与手术前后的TLC、RV、FVC、FEV_1、FEV_1/FVC均存在明显相关性。通过Pearson相关性分析发现:右上叶、右中叶、右下叶、右全肺、左上叶、左下叶、左全肺吸气相与术后TLC、FVC、FEV_1水平均存在显著相关性,且右上叶、右下叶、左上叶吸气相与术后FEV_1/FVC水平存在显著相关性。结论双源CT定量成像技术可用于肺癌患者术后肺功能的检测,可为医护人员提供精确的肺癌患者接受手术治疗后的肺功能变化情况。展开更多
文摘Objective: To explore the significance of dual-energy CT non-linear fusion technique in improving the quality of CTA image of renal cancer. Methods: The CTA images of 100 patients who had been confirmed by pathology as renal cancer were collected and were randomly divided into experimental group and control group with 50 cases respectively. The two groups of patients were treated with iodine concentration of 300 mg/ml and 350 mg/ml non-ionic contrast agent, with a dosage of 1.5 ml/kg and an injection rate of 4 ml/s. The contrast agent intelligently tracking method was adopted bolus. The control group used the conventional CTA scanning, with a reference tube voltage/tube current of 100 kv/ref150 mas. The experimental group adopted the double energy scanning, with ball tube A and ball tube B. The reference tube voltage/tube current was 100 kv/ref250 mas and sn150 kv/ref125 mas respectively. The images of the experimental group were non-linear fused to obtain the Mono+ 55 kev single-energy images. The CT value, SNR contrast ratio of the abdominal aorta, renal artery and tumor tissue of the experimental group images and the 100 KV images and the Mono+ 55 kev images of the control group were compared. The objective evaluation and subjective evaluation of the image quality of the three groups of images was performed. Results: The results showed that the 100 kV images of the experimental group were statistically different from those of the control group (P05) in CT value, SNR and CNR (P 0.05). And there was no statistically significant difference between the non-linear fusion single-energy Mono+ 55 kev images and the control group images in CT value, SNR and CNR (P > 0.05). The subjective evaluation of image quality showed that there was no significant difference between Mono+ 55 kev images and control group images, and the quality of Mono+ 55 kev images was higher than that of experimental group 100 kV images. Conclusion: The dual-energy CT non-linear fusion technique can improve the quality of CTA image in patients with renal cancer, and it is possible to obtain high quality CTA images with low iodine concentration contrast agent.
文摘目的探讨双源CT定量成像技术对肺癌患者术后肺功能改变的临床应用价值。方法选取2016年3月～2018年3月行单操作孔胸腔镜下肺叶或全肺切除治疗的肺癌患者30例为观察对象。分别于术前7 d以及术后3个月采用Vmax Series V6200 Autobox型肺功能仪器检测所有患者的肺功能情况。此外,对所有患者予以双源CT定量成像技术扫描,分析患者CT容积扫描、肺密度指标和肺功能的相关性。同时,分析不同肺叶吸气相与术后肺功能的相关性。结果通过Pearson相关性分析发现:Vin、Vex、Vin-Vex、MLDin(HU)、MLDex(HU)、MLDin-MLDex(HU)与手术前后的TLC、RV、FVC、FEV_1、FEV_1/FVC均存在明显相关性。通过Pearson相关性分析发现:右上叶、右中叶、右下叶、右全肺、左上叶、左下叶、左全肺吸气相与术后TLC、FVC、FEV_1水平均存在显著相关性,且右上叶、右下叶、左上叶吸气相与术后FEV_1/FVC水平存在显著相关性。结论双源CT定量成像技术可用于肺癌患者术后肺功能的检测,可为医护人员提供精确的肺癌患者接受手术治疗后的肺功能变化情况。
