Objective To evaluate the safety and efficacy of fenestrated endovascular aortic repair (fEVAR) using physician-modified stent grafts(PMSGs) to repair aortic dissection aneurysm.Methods Nine consecutive patients who underwent fEVAR using PMSGs from Jan 2018 to Jun 2018 were retrospectively reviewed.Results Nine PMSGs (6 Ankura stent grafts,3 COOK Zenith stent grafts) were deployed.Initial technical success rate was 97.0％ (32 of 33).Mean operative time was (303 ± 51) min.There were no in-hospital death and no perioperative neurology complications.All the patients survived at a median follow-up of 6.1 mouths (ranging 3-10 months).During follow up,no postoperative complications occurred,all target vessels remained patent and no fenestration-related type Ⅰ endoleak were observed.There are 3 cases of type Ⅱ and 2 cases of type Ⅲ endoleaks respectively.Conclusions FEVAR using PMSGs may be a viable alternative for patients with post aortic dissection aneurysm.

Objective:This paper is to propose a calibration model based on sine function which enables more choices to determine the functional relationship between the absorbance and the concentration of the tested substance.Methods:This paper uses Taylor series expansion and Levenberg-Marquardt to obtain the optimal parameters for the Sine model and then summarizes the characters of the Sine model. On the basis of these characters, this paper compares and evaluates the experimental data processed by the Sine model from four aspects: correctness, precision, linearity and correlation.Results:The generated sine function calibration model achieved deviations within ±3% of the national standard substance, precision ( CV%) less than 2%, and a linear correlation coefficient greater than 0.990 within the measurement range of 32-710 mg/L. The correlation coefficients between the sine model and other well-performing linear calibration models for 104 clinical samples were all greater than 0.990. Conclusions:The performance evaluation of the prealbumin assay kit using the sine function calibration model meets industry standards and shows good correlation with the results of clinical sample measurements. This indicates that the sine function calibration model can serve as a new calibration model for in vitro diagnostic research and clinical applications.