期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 365, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2022.131902
关键词
Differential ion mobility spectrometry; Surgical margin analysis; Tissue classification; Signal carry-over
资金
- The Finnish Cultural Foundation, Pirkanmaa Regional Fund, Finland
- Doctoral School of the Faculty of Medicine and Health Technology, Tampere University
- Emil Aaltonen Foundation, Finland
- Doctoral School of Tampere University [210073]
- Finnish Medical Foundation
- Cancer Foundation of Finland [2167, 4038]
- Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital, Finland
- Academy of Finland, Finland [9s045, 9T044, 9U042, 150618, 9V044, 9040, 9AA057, 9AB052, MK301]
- Tampereen Tuberkuloosisaatio~(Tampere Tuberculosis Foundation) [292477]
- European Union [848682]
Effective surgical margin assessment is crucial for good oncological outcomes, and new methods are being actively developed. One such method is the analysis of the chemical composition of surgical smoke to evaluate margins. In a simulated experiment using porcine tissues, we analyzed the delay in smoke transportation and evaluated its impact on tissue classification. The results showed that with a typical smoke evacuator setting, it takes about 1 second for the smoke to reach the sensor from the surgical plume.
Effective surgical margin assessment is paramount for good oncological outcomes and new methods are in active development. One emerging approach is the analysis of the chemical composition of surgical smoke from tissues. Surgical smoke is typically removed with a smoke evacuator to protect the operating room staff from its harmful effects to the respiratory system. Thus, analysis of the evacuated smoke without disturbing the operation is a feasible approach. Smoke transportation is subject to lags that affect system usability. We analyzed the smoke transportation delay and evaluated its effects to tissue classification with differential mobility spectrometry in a simulated setting using porcine tissues. With a typical smoke evacuator setting, the front of the surgical plume reaches the analysis system in 380 ms and the sensor within one second. For a typical surgical incision (duration 1.5 s), the measured signal reaches its maximum in 2.3 s and declines to under 10% of the maximum in 8.6 s from the start of the incision. Two-class tissue classification was tested with 2, 3, 5, and 11 s repetition rates resulting in no significant differences in classification accuracy, implicating that signal retention from previous samples is mitigated by the classification algorithm.
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