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Instrument Calibration

Instrument Calibration

Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
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Summary

This summary is machine-generated.

Custom calibration of fiber optic sensors improves accuracy in minimally invasive procedures. This enhances precision for vascular catheters and prostate surgical needles, reducing reliance on traditional imaging and improving patient outcomes.

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Area of Science:

Medical Devices
Biomedical Engineering
Sensing Technologies

Background:

Minimally invasive procedures for arterial diseases and prostate cancer face navigation and precision challenges.
Traditional imaging methods have accuracy limitations in complex anatomies.
Fiber optic sensors with optical frequency domain reflectometry (OFDR) offer potential solutions.

Purpose of the Study:

To develop and assess custom calibration techniques for fiber optic sensors in vascular catheters and prostate surgical needles.
To address device-specific characteristics affecting shape sensing accuracy.
To evaluate the impact of calibration, tool characteristics, and spatial resolution on shape reconstruction.

Main Methods:

Developed custom calibration protocols for fiber optic sensors integrated into vascular catheters and prostate surgical needles.
Assessed shape reconstruction accuracy based on calibration methods and tool characteristics.
Quantified root-mean-squared-error (RMSE) for both catheter and needle calibration.

Main Results:

Catheter calibration yielded an RMSE of 1.67 ± 0.77 mm (0.4% ± 0.2%).
Needle calibration achieved an RMSE of 0.23 ± 0.14 mm (0.2% ± 0.1%).
Spatial resolution impact was not significant but noted as application-dependent.

Conclusions:

Custom calibration significantly enhances the accuracy and reliability of fiber optic shape sensing for minimally invasive tools.
These methods improve safety and precision, reducing dependence on imaging like fluoroscopy.
Potential for automation exists, promising improved clinical outcomes and workflow efficiency.