关键词:
Liver neoplasms
Portal vein
Stents
Ultrasonography, interventional
摘要:
Objective To evaluate the clinical value of magnetic navigation ultrasound (MNU) combined with digital subtraction angiography (DSA) for dual-guided portal vein stent placement (PTPS) in the treatment of portal vein tumor thrombus. Methods This retrospective study analyzed clinical data from 30 patients with portal vein tumor thrombus who underwent PTPS at the Hepatobiliary Center of the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital) between December 2019 and December 2022. The observation group (15 patients) received dual-guided puncture using novel MNU combined with DSA, while the control group (15 patients) underwent conventional DSA-guided puncture. Parameters compared included operation time, number of puncture attempts, radiation dose (displayed by DSA), patient tolerance, procedural success rate, and postoperative complications. Statistical analysis was performed using SPSS 26.0. Measurement data were expressed as mean±standard deviation (x¯±s[jls-end-space/]) or median, and intergroup comparisons were conducted using t-tests or Mann-Whitney U tests. Results The observation group showed significantly shorter operation time [(22.3±9.7) min vs. (41.6±12.9) min, t=-4.63, P<0.001], fewer puncture attempts [(1.9±0.7) vs. (8.3±4.1), t=-5.99, P<0.001], and lower radiation dose [228 (180, 285) vs. 815 (650, 1 050) mGy, Z=-4.67, P<0.001]. Two cases in the control group required procedure termination due to pain or prolonged operation time from multiple punctures, whereas all observation group patients successfully completed the procedure. The success rate was higher in the observation group (15/15) than in the control group (13/15). The incidence of puncture site bleeding (1/15), stent thrombosis (2/15), and postoperative infection (2/15) in the observation group were lower than those in the control group (5/15,4/15,and 3/15, respectively). Conclusion Preliminary data suggest that dual-guided PTPS with MNU and DSA demonstrates impr