Objective To evaluate the value of three-dimensional scanning technology in the preoperative design of tissue expansion procedures,with the expectation of making objective and accurate judgments regarding the timing of the second-stage expanded flap transfer surgery for patients,in order to avoid insufficient or excessive expanded flap areas.Methods From April 2024 to September 2024,we treated 10 patients who planned to undergo local tissue expansion for head and neck reconstruction.We utilized the Vectra WB360 three-dimensional imaging device to measure the wound defect area,the base area of the expander,and the expanded flap area in these patients,and compared these measurements with intraoperative results to assess the accuracy of this technology in guiding tissue expansion surgery.Results In 10 cases,the surface area of the expander(expansion skin area),the base area of the expander,and the lesion area were measured using the Vectra WB360 3D imaging device,with average measurements of(539.3±268.4)cm2,(157.0±78.13)cm2,and(252.8±141.6)cm2.Intraoperative actual measurements were(470.7±230.4)cm2,(159.9±83.2)cm2,and(241.7±134.1)cm2.Statistical analysis revealed no significant differences between the device-measured base area of the expander and lesion area compared to the intraoperative actual measurements(P＞0.05).The device-measured expanded skin area was greater than the intraoperative flap area(P＜0.05),which is associated with the retraction of the expanded skin after the removal of the expander.During the opearation,the flaps were able to completely cover the wound,and all flaps survived postoperatively.Follow-up at 1 to 6 months indicated good recovery of the surgical site's appearance and function,with a high level of patient satisfaction.Conclusion The Vectra WB360 three-dimensional imaging device significantly improves the accuracy of preoperative flap area estimation,optimizes surgical planning,and thereby enhances the success rate of expanded skin flap surgery.

Objective To evaluate the value of three-dimensional scanning technology in the preoperative design of tissue expansion procedures,with the expectation of making objective and accurate judgments regarding the timing of the second-stage expanded flap transfer surgery for patients,in order to avoid insufficient or excessive expanded flap areas.Methods From April 2024 to September 2024,we treated 10 patients who planned to undergo local tissue expansion for head and neck reconstruction.We utilized the Vectra WB360 three-dimensional imaging device to measure the wound defect area,the base area of the expander,and the expanded flap area in these patients,and compared these measurements with intraoperative results to assess the accuracy of this technology in guiding tissue expansion surgery.Results In 10 cases,the surface area of the expander(expansion skin area),the base area of the expander,and the lesion area were measured using the Vectra WB360 3D imaging device,with average measurements of(539.3±268.4)cm2,(157.0±78.13)cm2,and(252.8±141.6)cm2.Intraoperative actual measurements were(470.7±230.4)cm2,(159.9±83.2)cm2,and(241.7±134.1)cm2.Statistical analysis revealed no significant differences between the device-measured base area of the expander and lesion area compared to the intraoperative actual measurements(P＞0.05).The device-measured expanded skin area was greater than the intraoperative flap area(P＜0.05),which is associated with the retraction of the expanded skin after the removal of the expander.During the opearation,the flaps were able to completely cover the wound,and all flaps survived postoperatively.Follow-up at 1 to 6 months indicated good recovery of the surgical site's appearance and function,with a high level of patient satisfaction.Conclusion The Vectra WB360 three-dimensional imaging device significantly improves the accuracy of preoperative flap area estimation,optimizes surgical planning,and thereby enhances the success rate of expanded skin flap surgery.

Objective To investigate whether an innovative intake duct driven from nasobiliary tube via nose improved the success rate of oronasal conversion and shorten the operation time.Methods 118 patients with routine nose bile duct drainage under ERCP examination were randomly divided into magnetic group and thread group. Patients in magnetic group were using a self-made nasal biliary drainage tube derived via nasal catheter traction and nasal catheter, one end of the magnet will be equipped with high performance through mouth to mouth pharynx, smooth delivery nose bile duct. While patients in thread group adopts godet from pharynx posterior wall drawing pulled stomach tube or catheter again, then ifx the nose bile duct.Results The success rate was signiifcantly higher in magnetic group than thread group, with less stimulation of pharynx, and less complications.Conclusion Self-made intake duct derived magnetic catheter was simple and less stimulation, avoid oral mucosa damage, reduced the suffering of patients, shortened operation time and improved the operation efifciency with high success rate.

Purpose:To detect DNA polymerase ? gene (pol?) mutations in human gastric cancer specimens and the relationship between H.pylori infection and pol? mutation. Methods:Extracting total RNA from gastric carcinoma,corresponding cancer specimens tissues and normal tissues, synthesizing cDNA and then using them as templates proceed PCR,The products of PCR were checked by SSCP. Extracting DNA from the specimen, we could detect the H.Pylori from the tissue of gastric carcinoma and the tissue adjacent to them by PCR.Results:There were 7 abnormal SSCP of 32 gastric carcinoma samples, and the mutation rate was 21.9%, but nothing abnormal was found in the tissues adjacent to the tumor. The results of H.Pylori DNA were positive in 15 samples from 32 gastric carcinoma tissues. Positive rate was 46.9(15/32).Detection result of tissues adjacent to tumor was consistent with gastric carcinoma. Comparing pol? SSCP to H.pylori-DNA in gastric carcinoma,we found the positive samples of pol? SSCP correlated with H.pylori-DNA.Conclusions:It is suggested that the pol?gene mutation may be associated with carcinogenesis and development of human gastric cancer. H.pylori infection is possibly related to pol? mutation in gastric carcinoma.