Abstract:
Objective To investigate the clinical application value of software-guided magnetic resonance imaging-ultrasound fusion targeted biopsy (MRUS-TB) in patients with low- and medium-risk prostate-specific antigen (PSA) levels.
Methods The clinical data of 298 patients who underwent prostate-targeted puncture for the first time at Tianjin Medical University Cancer Institute and Hospital from August 2015 to February 2020 were retrospectively analyzed. We compared between MRUS-TB combined with transrectal ultrasound-guided systematic biopsy (TRUS-SB) (Group A) and cognitive magnetic resonance imaging transrectal ultrasound fusion targeted biopsy (COG-TB) combined with TRUS-SB (Group B) to determine the influence of MRUS-TB and COG-TB on the detection rate of prostate cancer (PCa) in patients with PSA levels of 4-20 ng/mL.
Results Cases in Group A and Group B (185 and 113 cases, respectively) were compared; the detection rate between PCa and clinically significant prostate cancer (CSPCa) was not significantly different (P>0.05). The effective sample length of tumor puncture tissue and the positive ratio of PCa detected by the number of puncture were statistically significant (P < 0.05). The detection rates of PCa and CSPCa were significantly different according to PSA levels and prostate volumes (P < 0.05). The difference in CSPCa detection rates was significant (P=0.043) when the nodule diameter was ≤5 mm on magnetic resonance imaging.
Conclusions MRUS-TB can increase the detection rate of CSPCa in patients with medium- and low-risk PSA levels and small prostate volume and can improve the detection rate of CSPCa nodules measuring ≤5 mm in diameter