# Achieving High‐Precision Attenuation Coefficient Measurement in Optical Coherence Tomography

## TL;DR

This paper confirms a mathematical model for measuring light absorption in tissues using OCT, achieving high precision in experiments with intralipid samples.

## Contribution

The study validates the Cramer-Rao lower bound equation for OCT attenuation coefficients with high precision.

## Key findings

- The Cramer-Rao lower bound equation was experimentally validated for OCT attenuation measurements.
- A standard deviation below 0.01 mm−1 was achieved for intralipid samples using a 1310 nm OCT system.
- A systematic framework was introduced to achieve high precision in OCT attenuation measurements.

## Abstract

In this study, we aim to validate the analytical Cramer‐Rao lower bound (CRLB) equation for determining attenuation coefficients using a 1310 nm Optical Coherence Tomography (OCT) system. Our experimental results successfully confirm the validity of the equation, achieving unprecedented precision with a standard deviation below 0.01 mm−1 for intralipid samples. Furthermore, we introduce a systematic framework for attaining high precision in OCT attenuation measurements.

We aim to determine the attenuation coefficients using a 1310 nm Optical Coherence Tomography (OCT) system with an unprecedented standard deviation below 0.01 mm−1 for intralipid samples. Our experimental results validate the analytical Cramer‐Rao lower bound equation. Additionally, we present a systematic framework for achieving high precision in OCT measurements.