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Multi-Pulse laser ablation modeling with applications to automated zona removal
Summary
Laser zona drilling (LZD) uses lasers to create openings in the embryo's zona pellucida (ZP). This study analyzes multi-pulse LZD thermal effects and introduces a novel thermal measurement method.
Area of Science:
- Embryology
- Laser Technology
- Reproductive Biology
Background:
- Laser zona drilling (LZD) is crucial for assisted hatching and preimplantation genetic diagnosis.
- Minimizing thermal damage to embryo blastomeres during LZD is essential.
- Existing thermal analyses of LZD lasers typically focus on single pulses, not the multiple pulses used in practice.
Purpose of the Study:
- To analyze the thermal effects of multi-pulse laser zona drilling (LZD).
- To introduce a linear approximation method for evaluating multi-pulse LZD.
- To present a novel method for measuring the thermal impact of single laser pulses.
Main Methods:
- Analysis of multi-pulse laser interactions with the zona pellucida.
- Development of a linear approximation model for multi-pulse LZD thermal effects.
- Experimental measurement of single laser pulse thermal effects using Rhodamine B dye and high-speed videography.
Main Results:
- Characterization of thermal effects associated with multi-pulse LZD.
- Validation of a linear approximation method for predicting thermal impact.
- Demonstration of a novel, high-speed method for quantifying single-pulse laser thermal effects.
Conclusions:
- Understanding multi-pulse LZD thermal dynamics is critical for optimizing embryo manipulation procedures.
- The proposed linear approximation offers a practical approach for thermal analysis in LZD.
- The novel Rhodamine B-based method provides accurate, high-speed thermal effect measurements for laser-based embryo procedures.
