Objective:This meta-analysis was conducted to systematically evaluate the short-term efficacy and safety of indocyanine green fluorescence imaging guided laparoscopic liver tumor resection (FIGLTR).Methods:A systematic search was made for the literature on indocyanine green fluorescence image-guided laparoscopic hepatectomy in randomized, semi-randomized controlled trials and observational studies, and manually search published materials and conference papers in Chinese and English and trace references included in the literature. The retrieval period was up to September 2021. The quality of included studies was evaluated, then the meta-analysis was conducted using Review Manager 5.1 software.Results:Ten studies were included with 803 patients, including 341 in the FIGLTR group and 462 in the non-FIGLTR group. Meta results showed that: Compared to the traditional resection group, indocyanine green fluorescence imaging can significantly shorten the operative time ( MD=-22.61, 95% CI: -34.20--11.03, P<0.001), reduce intraoperative bleeding ( MD=-49.17, 95% CI: -84.99--13.36, P<0.01), shorter hospital stay ( MD=-0.89, 95% CI: -7.72--0.06, P<0.05), Improve the removal rate of R 0 edge ( OR=8.80, 95% CI: 1.96-39.44, P<0.05) and reduce the incidence of postoperative complications ( OR=0.55, 95% CI: 0.34-0.87, P<0.05) of laparoscopic liver tumor resection. There were no differences found in portal block time and transfusion rate. Conclusion:Indocyanine green fluorescence imaging technology provides a new way for safe and accurate laparoscopic resection of liver tumors.

Objective:To measure the mesio-distal interradicular space of posterior teeth at different height by CBCT.Methods:60 subjects with skeletal Class Ⅰ,Ⅱ and Ⅲ patterns were included(n =20).From the distal of first premolar to the mesial of second molar,the mesiodistal width at the height of 2,4,6,8 and 10 mm from the alveolar crest were measured and analysed.Results:The interradicular distance was larger than 3 mm within 4-10 mm height in maxilla and in mandible.The maxillary mesiodistal width values measured between the first premolar and second premolar in skeletal Class Ⅰ and Class Ⅱ pattern was greater than that in Class Ⅲ(P ＜0.05) and there was no significant difference in other zones.In the mandible,the values of skeletal Class Ⅲ pattern were greater than those of skeletal Class Ⅰ and Class Ⅱ pattern(P ＜0.05).Conclusion:The suitable interradicular zone is within 4-8 mm to the alveolar crest between the second premolar and first molar for miniscrew implant placement in maxilla,and over 4 mm between the first molar and second molar in mandible.The difference of interradicular spaces in sagittal skeletal features is existed.