To analyze risk factors for short-term and long-term facial nerve function after acoustic neuroma surgery.

Sixty-two patients with acoustic neuroma admitted to Neurosurgery Department of the First Affiliated Hospital of Xiamen University from January 2015 to June 2018 were retrospectively analyzed. The facial nerve function of all patients was evaluated at 7 d and 6 months after surgery. The risk factors that may be related to the short-term and long-term facial nerve dysfunction were collected. The relationship between the related factors and the short-term and long-term facial nerve function was analyzed by Logistic regression.

Seven days after surgery, 21 patients (33.9%) had normal facial nerve function, 41 patients (66.1%) had facial nerve function impairment; 6 months after surgery, 49 patients (79.0%) had normal facial nerve function, and 13 patients (21.0%) had facial nerve function impairment. Logistic univariate regression analysis showed that the larger the maximum diameter of the tumor and the tighter adhesion between tumor and facial nerve, the greater the possibility of facial nerve function nerve injury occurred 7 d after surgery (P=0.002, 0.002); the duration of clinical symptoms before surgery was the risk factor of facial nerve dysfunction 6 months after surgery (P=0.035). Logistic multivariate regression analysis showed that the degree of adhesion between the tumor and the facial nerve and the maximum tumor diameter were the independent risk factors for facial nerve dysfunction 7 d after surgery (P=0.003, 0.014); the duration of clinical symptoms before surgery and the maximum diameter of tumor were the independent risk factors of facial nerve dysfunction 6 months after surgery (P=0.010, 0.030).

The tighter the adhesion between the tumor and the facial nerve and the larger the maximum diameter of the tumor, the greater the possibility of facial nerve function injury occurred 7 d after surgery. The longer the duration of clinical symptoms and the larger the maximum diameter of tumor, the greater the possibility of facial nerve injury 6 months after surgery.

To compare and analyze the imaging quality and performance characteristics, examination time, labor cost and radiation dose value of 8-silce and 16-slice mobile CT in multi-center clinical application.

From August 2010 to July 2020, Neurosurgery Department of the Seventh Medical Center, Chinese PLA General Hospital performed 90 059 head scans with 8-slice mobile CT; From March 2017 to July 2020, Neurosurgery Department of the Seventh Medical Center, Chinese PLA General Hospital combined with several hospitals performed 10 969 head scans with 16-slice mobile CT. The patients’head scanning, examination time and labor cost (cumulative time of personnel), and radiation dose value were collected: CT dose index (CTDIvol), dose length product (DLP), effective dose (ED). In addition, the detection values of 64 rows of large CT in 60 cases of the same period were randomly selected for comparison.

(1) Imaging analysis: There were 90 059 cases of 8-slice mobile CT head scanning, including 82 843 cases in the emergency room (91.99%), 7090 cases in the ICU (7.87%) and 126 cases in the operating room (0.14%). There were 10 959 cases of 16-slice mobile CT head scanning, including 8601 cases in the emergency room (78.41%), 879 cases in the ICU (8.01%), 31 cases in the operating room (0.28%), and 1458 cases in the vehicle/ship/aircraft head scanning (13.29%). The imaging quality of the two components is basically the same. Compared with the 8-slice mobile CT group, the 16-slice mobile CT group is equipped with precision guide rail control scanning and shock absorber, with fast scanning speed and less motion artifacts, and with a variety of imaging functions such as plain scanning+enhancement, CT angiography (CTA) and CT perfusion imaging (CTP). (2) Scanning time and radiation dose: There were significant differences in scanning time, labor cost and radiation dose (CTDIvol, DLP, ED) of 16-slice, 8-slice mobile CT and 64-slice large-scale CT (P<0.05).

The 16-slice mobile CT has excellent imaging quality, fast scanning speed and less time consuming, low staff cost and low radiation dose. It has a variety of imaging functions such as plain scanning, enhancement and CTA and CTP.

This paper investigates the efficacy of by computer aided design (CAD)-based three dimensional printing (3DP) individualized guideboard assisted minimally invasive perforation on patients with hypertensive cerebral hemorrhage (HCH).

A total of 108 patients with HCH were enrolled in our department from September 2015 to May 2017, they were randomly divided into two groups, the 48 patients in the invasive group received CAD-based 3DP perforation surgery, the microscopic group of 60 patients received small bone window minimally invasive craniotomy treatment, compared the two groups of patients with postoperative complications and clinical efficacy. On the basis of high-resolution CT data of the invasive group, the three-dimensional images were obtained by computer-aided design and an optimal individualized guideboard was designed, after 3DP technique was used to print, preoperative communicate with the patient and their families the disease and surgical programs by physical model intuitively, and simulate the specific minimally invasive puncture process. Intraoperative individual guides guide the direction and depth of puncture.

The incidence of postoperative complications and clinical efficacy in the invasive group were compared with the microscopic group, the difference was not statistically significant (P>0.05).

Small bone window minimally invasive craniotomy treatment of HCH has been largely accepted by scholars, the invasive group were compared with the microscopic group, treatment effect is no remarkable, which is safe and reliable and worthy of promotion and application, especially the basic-level hospitals that do not meet the conditions of microsurgery treatment.