Robotic mechanical localization of prostate cancer correlates with magnetic resonance imaging scans

Tae Young Shin, Yeong Jin Kim, Sey Kiat Lim, Jung Kim, Koon Ho Rha

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Purpose: To evaluate the concordance of cancer location of the tissue mapping from a mechanical pressure transducer with magnetic resonance imaging (MRI) scans. Materials and Methods: A total of 60 indentations were performed on 5 prostate specimens obtained after radical prostatectomy utilizing a robotic indentation system. The mechanical elastic moduli of suspected malignant lesions were calculated and mapped, and their locations were compared with suspicious areas of malignancy on MRI scans. Results: The concordance rate between the location mapping from the robotic indentation system and MRI scans results was 90.0% (54/60). The sensitivity and specificity of the robotic indentation system were 87.9% (29/33) and 92.6% (25/27), respectively. The positive predictive value and negative predictive value were 93.5% (29/31) and 93.1% (27/29), respectively. Conclusion: The locations of malignant lesions derived from our robotic indentation system correlated strongly with the locations of suspected areas of malignancy on MRI scans. Our robotic system may provide a more targeted biopsy of the prostate than conventional non-targeted systemic biopsy, possibly improving the diagnostic accuracy of prostatic biopsies for cancer.

Original languageEnglish
Pages (from-to)907-911
Number of pages5
JournalYonsei Medical Journal
Issue number4
StatePublished - Jul 2013


  • Diagnosis
  • Elasticity
  • MRI scans
  • Prostate cancer
  • Robotics


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