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Related Experiment Video

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Novel Intraoperative Navigation Using Ultra-High-Resolution CT in Robot-Assisted Partial Nephrectomy.

Kiyoshi Takahara1, Yoshiharu Ohno2, Kosuke Fukaya1

  • 1Department of Urology, Fujita-Health University School of Medicine, Nagoya 470-1192, Japan.

Cancers
|April 23, 2022
PubMed
Summary

Robot-assisted partial nephrectomy (RAPN) using ultra-high-resolution CT (UHR-CT) navigation led to shorter warm ischemia times and less blood loss compared to area-detector CT (ADCT). Short-term kidney function remained comparable between the two methods.

Keywords:
estimated blood lossrobot-assisted partial nephrectomyultra-high-resolution computed tomographywarm ischemia time

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Area of Science:

  • Urology
  • Surgical Technology
  • Medical Imaging

Background:

  • Robot-assisted partial nephrectomy (RAPN) is a standard procedure for kidney tumors.
  • Intraoperative navigation aims to improve surgical precision and outcomes.
  • Ultra-high-resolution computed tomography (UHR-CT) offers enhanced imaging detail compared to standard area-detector CT (ADCT).

Purpose of the Study:

  • To compare the perioperative and short-term functional outcomes of RAPN using UHR-CT versus ADCT for intraoperative navigation.
  • To evaluate the impact of UHR-CT navigation on warm ischemia time (WIT), estimated blood loss (EBL), and renal function preservation.

Main Methods:

  • Retrospective analysis of 323 patients undergoing RAPN with UHR-CT or ADCT navigation.
  • Propensity score matching to create comparable groups of 99 patients each.
  • Comparison of WIT, EBL, and postoperative estimated glomerular filtration rate (eGFR) preservation ratios at 3 and 6 months.

Main Results:

  • UHR-CT group demonstrated significantly shorter WIT (15 min vs. 17 min) and lower EBL (33 mL vs. 50 mL) compared to the ADCT group (p < 0.05).
  • No significant differences in the postoperative eGFR preservation ratio were observed between the groups at 3 or 6 months (p > 0.15).

Conclusions:

  • UHR-CT navigation in RAPN is associated with reduced WIT and EBL compared to ADCT.
  • While UHR-CT offers intraoperative advantages, short-term renal function preservation is similar between the two navigation techniques.