ABSTRACT
Objective To compare the clinical efficacy and short-term prognosis of laparoscopic radical resection of right colon cancer guided by superior mesenteric artery and superior mesenteric vein.Methods 80 patients with right colon cancer of cT2-4 and/or N0-2M0 admitted from January 2020 to October 2022 were selected as the research objects,and they were randomly divided into observation group and control group,with 40 patients in each group.The observation group was treated with SMA-oriented laparoscopic radical resection of right colon cancer,while the control group was treated with SMV-oriented laparoscopic radical resection of right colon cancer.The curative effect and prognosis of the two groups were compared.Results There was no significant difference between the two groups in general condition,operation time,gastric tube placement time,recovery time of farting,postoperative fasting time,postoperative drainage time,postoperative nutritional index,total incidence of complications and postoperative hospitalization time(P>0.05).The lymph nodes in the observation group were significantly more than those in the control group,and the difference was statistically significant(P<0.05).In the observation group,the lymph nodes in the anterior and left side of superior mesenteric artery were examined(No.D3),and 273 lymph nodes were detected,and Seven patients(17.5% )were diagnosed with D3 metastasis,and 13 lymph nodes were positive(5.2% ).Conclusion Laparoscopic radical resection of right colon cancer guided by superior mesenteric artery,without increasing the incidence of complications and high safety,can more thoroughly clean lymph nodes and reduce tumor recurrence,which is expected to significantly improve the prognosis of patients.
ABSTRACT
This study presents a novel method for designing and preparing a visible light-infrared-compatible camouflage sample based on the shape, size of the visible band's color unit and the infrared band's material coatings. The coatings were prepared by using the cold spray method on 1 m × 1 m aluminum substrates with a color unit of the regular hexagonal sample (M1) and regular quadrilateral sample (M2). Then the color difference, the temperature difference and image salience value methods were used to analyze the effectiveness of camouflage samples through the real-scene tests. The results indicate that designed and prepared compatible camouflage samples are effective in their surrounding environment. Meanwhile, it can be concluded that M1 has high fusion with a background in visible and infrared bands compared to M2, M1 has 90.6% color similarity and only 0.8% temperature difference, the M2 has 85.4% color similarity and 1.6% temperature difference with the green background. These findings indicate that the cold spray method could compensate for conventional visible light camouflage design limitations. The combination of camouflage color unit design and visible/infrared material coating could be helpful in optical camouflage research. Furthermore, to improve the military equipment's survival time on the battlefield.
