Abstract
Purpose
We aimed to evaluate the reliability of a portable device that applies Raman spectroscopy at an excitation wavelength of 1064 nm for the post-operative analysis of urinary stone composition.
Materials and methods
Urinary stone samples were obtained post-operatively from 300 patients. All samples were analyzed by the portable Raman spectroscopy system at an excitation wavelength of 1064 nm as well as by infrared spectroscopy (IR), and the results were compared.
Results
Both Raman spectroscopy and IR could detect multiple stone components, including calcium oxalate monohydrate, calcium oxalate dihydrate, calcium phosphate, uric acid, cystine, and magnesium ammonium phosphate hexahydrate. The results from 1064-nm Raman analysis matched those from IR analysis for 96.0% (288/300) of cases. Although IR detected multiple components within samples more often than Raman analysis (239 vs 131), the Raman analysis required less time to complete than IR data acquisition (5 min vs 30 min).
Conclusions
These preliminary results indicate that 1064-nm Raman spectroscopy can be applied in a portable and automated analytical system for rapid detection of urinary stone composition in the post-operative clinical setting.
Trial registration
Chinese Clinical Trail Register ID: ChiCTR2000039810 (approved WHO primary register) http://www.chictr.org.cn/showproj.aspx?proj=63662.
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Abbreviations
- IR:
-
Infrared spectroscopy
- FTIR:
-
Fourier transform infrared spectroscopy
- COM:
-
Calcium oxalate monohydrate
- COD:
-
Calcium oxalate dihydrate
- CaP:
-
Calcium phosphate
- UA:
-
Uric acid
- MAPH:
-
Magnesium ammonium phosphate hexahydrate
- SVM:
-
Support vector machine
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Protocol/project development: EM and LW. Data collection or management: GJ, ZC, KC, EM, and LW. Data analysis: WZ, ZS, QZ, FY, EM, and LW. Manuscript writing/editing or review: WZ, ZS, LY, YX, EM, and LW.
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The study design was approved by Union Hospital ethics review board. The procedures used in this study adhere to the tenets of the Declaration of Helsinki.
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Zhu, W., Sun, Z., Ye, L. et al. Preliminary assessment of a portable Raman spectroscopy system for post-operative urinary stone analysis. World J Urol 40, 229–235 (2022). https://doi.org/10.1007/s00345-021-03838-8
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DOI: https://doi.org/10.1007/s00345-021-03838-8