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Objective@# Using computer-assisted navigation technology to guide the resection and reconstruction of mandibular ameloblastoma, evaluating its treatment effect.@*Methods @# Twelve patients were selected from the Affiliated Stomatological Hospital of Nanjing University from January 2017 to May 2022. All 12 patients accepted same surgery which included resection of mandibular ameloblastoma and reconstruction by fibula musculocutaneous flap. Among them, 6 cases were included in the navigation group; 6 cases were in the non-navigation group. Advantages and disadvantages of computer-assisted navigation technology in this operation were evaluated with these cases. @*Results@# The 12 operations were performed by the same operator. The average time for fixing the navigation bracket and performing navigation in the navigation group was about 15 minutes. Compared with the non-navigation group, the average operation time in the navigation group was shortened by about 10 minutes. In the navigation group, the mandible resection range matched the fibula musculocutaneous flap well, and the occlusal relationship recovered well. @*Conclusion @#Using the mandibular reference frame, under the guidance of computer-assisted navigation technology, the resection and reconstruction of mandibular ameloblastoma can be performed quickly and accurately.
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Objective To explore the application value of computed tomography (CT)-based three-dimensional digital navigation technology in microwave ablation of lung cancer. Methods A total of 92 patients with lung cancer in our hospital were retrospectively analyzed, and randomized to receive microwave ablation with the three-dimensional digital navigation technology or traditional CT-guided microwave ablation (three-dimensional navigation group and traditional group). The two groups were paired according to tumor location, size (the maximum diameter difference of less than or equal to 2 mm), and microwave ablation conditions, for a total of 46 pairs. The operation time, times of microwave ablation needle puncture, CT dose index, incidence rates of intraoperative complications, and postoperative lesion control were compared between the two groups. Results The operation time [(30.07 ± 6.36) min vs (47.20 ± 9.65) min], times of puncture [(1.72 ± 0.69) times vs (7.13 ± 3.00) times], CT dose index [(11.16 ± 2.20) mGy vs (26.67 ± 8.72) mGy], and incidence of intraoperative complications (10.87% vs 34.78%) in the three-dimensional navigation group were lower than those in the traditional group, and the response rate was higher in the three-dimensional navigation group than in the traditional group (93.48% vs 71.74%) (P < 0.05). Conclusion CT-guided three-dimensional digital navigation technology for microwave ablation of lung cancer makes the operation of interventional puncture more accurate and safe.
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Objective To evaluate the application value of fetal heart echocardiography intelligent navigation (5D Heart) in the display of key diagnostic elements in five rapid screening fetal echocardiographic views.Methods Three hundred and eighty-four 3D volume datasets of 220 normal singleton fetuses in the second and third trimesters were acquired.After processing the datasets using 5D Heart,five rapid screening views were acquired,and 21 key diagnostic elements of the five cardiac diagnostic sections were graded.The 2 test was used to compare the difference in the key diagnostics elements of the five rapid screening views between 5D heart and the traditional technique.Pearson correlation was used to compare the detection rate of key diagnostic elements between 5D Heart technique and traditional two-dimensional echocardiography in normal fetuses and fetuses with congenital heart disease.The rank sum test was used to detect the consistency and reliability of the results.Results A total of 384 fetal volume datasets were obtained from 220 fetuses,of whom 317 heart volume datasets were available for analysis,with a success rate of 82.6％.There was no difference in the key diagnostic elements of the five rapid screening views between 5D heart and the traditional technique (x2=5.17,P=0.27).Compared with the abnormal fetal heart group (89.6％),the detection rate of diagnostic elements in the normal fetal heart group was 85.2％ (r=0.94,P=0.02).No significant differences were found when comparing the grading results of one observer in different periods of time,the grading results between two experienced doctors,or the grading results among the experienced doctor and one relatively inexperienced doctor (P ＞ 0.05).Conclusions Fetal cardiac ultrasound intelligent navigation technique has high reliability and repeatability in obtaining fetal rapid screening views and displaying fetal elemental diagnostic information.It has tremendous potential in standardized data collection and analysis of cardiac diagnostic sections in fetuses with congenial heart disease,as well as in training and teaching,remote medical consultation,and screening in primary hospitals.
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With the vigorous development of navigation technology in various fields of medicine, craniomaxillofacial surgery has also entered a new eraofusing navigation surgery. It has a wide range of applications, which can be used in the treatment of complicated facial fractures, osteotomy, cleft lip and palate and other aspects. The aim of this review is to summarize the principles, developments, applications of the navigation technology in craniomaxillofacial surgery.
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Objective To evaluate the clinical effects of pertacuneous sacroiliac screw combined with retrograde anterior column screw fixation and that with external fixation stent for 3D navigation aided treatment of Tilt pelvic fractures.Methods A retrospective case control review was conducted on 49 cases of Tilt pelvic fractures admitted to our hospital from June 2015 to February 2017.There were 27 males and 22 females,aged 21-68 years (mean,44.6 years).Twenty eight cases were treated with the pertacuneous sacroiliac screw combined with retrograde anterior column screw fixation (Group A),and twenty one cases were treated with pertacuneous sacroiliac screw combined with external fixation stent (Group B).Operation duration,blood loss,time for exercise,postoperative complications,Majeed pelvic fractures function score and visual analogue scale (VAS) at the last follow-up were compared between the two groups.Results All patients were followed up for 6-16 months (mean,12.7 months).No significant difference was found for operation duration,intraoperative blood loss and Majeed pelvic fractures functional scores at the last follow-up (P ＞ 0.05).Time for exercise in Group A [(9.71 ± 0.49) weeks] was earlier than that in Group B [(17.05 ± 0.73) weeks] (P ＜ 0.05).The incidence of postoperative complications was 4％ in Group A,significantly lower than 29％ in Group B (P ＜ 0.05).Significant difference was observed for VAS between the two groups at postoperative 1,4 and 12 weeks (P ＜ 0.05).Conclusion Pertacuneous sacroiliac screw combined with retrograde anterior column screw fixation aided by 3D navigation has advantages of early time for exercise,pain relief,few complications,which serves as a favorable treatment for Tilt pelvic fractures.
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[Summary] This article briefly reviewed the application of advanced navigation technology in spinal surgery .By comparing advantages and disadvantages of the current application of navigation equipment , we pointed out the development direction of spinal navigation technology .