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Objective To explore the measurement accuracy of right coronary artery during coronary angiography (CAG)at 45Gdegree left oblique position.Methods The images of right coronary artery angiographic view of 45Gdegree left oblique position were divided into nine average areas.The images with marker segment of guiding wire located in the central area (n＝45)or subcentral area (n＝45)of CAG cases were collected retrospectively and randomly.The marker segment was measured by catheter calibration method,and the measure values were compared with the actual length (30 mm).Results A N OVA analysis suggested statistical differences among the three groups (F＝4.59,P＜0.05).By paired comparison,no significant differences were found in measured values between central areas (3 1.1 9± 4.12)mm or subcentral areas (29.55±2.75)mm and the actual length (P＞0.05).Significant differences were found in measured values between central areas and subcentral areas (P＜0.05).The measuring error of subcentral areas (－1.5%)was less than that of central areas (3.9%).Conclusion During CAG at 45Gdegree left oblique position,the values of subcentral area were more accurate than those of central area and the subcentral area was thus regarded as image area with less measurement error in interventional surgery.
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Objective To investigate the correlation between the expression of CD147 and MUC5ac in peripheral small cell lung cancer and the computed tomography (CT) signs.Methods Forty two cases of peripheral non-small cell lung cancer (NSCLC) confirmed by operation and pathology were examined by CT.The positive expression of CD147 and MUC5ac was detected by immunohistochemical staining and the relationship between the expression of CD147 and MUC5ac was analyzed.Results CD147 and MUC5ac were closely related to the lymphatic metastasis of peripheral non-small cell lung cancer (P ＜ 0.05).The positive expression of CD147 is significantly related to tumor size,deep lobulation,spinous process and lymphadenopathy (P ＜ 0.05).MUC5ac is significantly related to tumor size,deep lobulation,spiculation,vascular convergence sign,extrapleural fat Line disappearance,and mediastinal lymphadenopathy (P ＜0.05).Conclusions These results indicate that CD147 and MUC5ac play an important role in the invasion and metastasis of peripheral lung cancer.
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Objective To explore the differences of aortic diameter measured by catheter calibration method and centimeter sizing catheter calibration method in endovascular graft exclusion for Stanford type B aortic dissection.Methods A total of 30 patients with Stanford B type aortic dissections treated with endovascular graft exclusion were measured with the two calibration methods to measure aortic diameters at left subclavicular artery position.The measurement parameters were compared with CTA measurement results.Results Statistical differences of measurement parameters were found among catheter calibration,centimeter sizing catheter calibration and CTA (F=3.15,P＜0.05),and paired comparison showed statistical differences between catheter calibration method and CTA result (P＜0.05),and between the results of catheter calibration method and centimeter sizing catheter calibration method (P＜0.05),while no statistical difference was found between centimeter sizing catheter calibration method and CTA result (P＞0.05).Taking CTA as golden standard method,Bland-Altman analysis indicated that the centimeter sizing catheter calibration method exerted better consistency with CTA.Conclusion The measurement value of centimeter sizing catheter calibration method is identical to the CTA measurement result,and superior to catheter calibration method for precise stent selection in Stanford type B aortic dissection.
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Objective To discuss the relationships between expression levels of CD147 and vascular endothelial growth factor C (VEGF-C) in lung squamous cell carcinoma and adenocarcinoma and the clinicopathological features.Methods The expression of CD147 and VEGF-C in 57 lung cancer tissues was detected by immunohistochemical method.Results The positive expression rates of CD147 and VEGF-C in 57 lung cancer tissues were 63.16 ％ (36/57),66.67 ％ (38/57) respectively.The expression of CD147 and VEGF-C in lung squamous cell carcinoma and adenocarcinoma had no statistical difference (both P ＞ 0.05).The expression of CD147 and VEGF-C in lung squarnous cell carcinoma and adenocarcinoma had relationship with lymph node metastasis and tumor TNM stage (all P ＜ 0.05),however they had not correlation with the patient' s age,sex,smoking and tumor cell differentiation extent irrelevant (all P ＞ 0.05).The expression of CD147 was related positively with VEGF-C (P ＜ 0.01).Conclusions CD147 and VEGF-C play important roles in the progression and metastasis of lung squamous cell carcinoma and adenocarcinoma,which may have a synergistic effect.The joint detection of CD147 and VEGF-C can be used as a useful prognostic indicator in patients with lung cancer.
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Objective To investigate the application of dual volume reconstruction translucent imaging in performing stent- assisted coil embolization for intracranial aneurysm embolization treatment. Methods During the period from Nov. 2011 to Sep. 2012, a total of 30 patients with intracranial aneurysm were admitted to authors’ hospital. Stent-assisted coil embolization was carried out in all patients. The number of all the stent point-marks visualized on routine 2D-DSA, on rotational angiography (3D-RA) and on dual volume reconstruction translucent images were determined, and the results were compared between each other of the three imaging methods. Results A total of 34 stents (206 stent point-marks in total) were implanted in the 30 patients. Of the 206 stent point-marks, 2D-DSA, 3D-RA and dual volume reconstruction translucent image could clearly display 146 (70.8%), 123 (59.7%) and 190 (92.2%), respectively. Statistically significant difference in the displaying rate of the stent point-marks existed between each other among the three imaging methods (P < 0.05). Conclusion Dual volume reconstruction translucent imaging can distinctly display the location of the stent marks, which is of great value in guiding the performance of intracranial stent implantation surgery.