This presentation reviews bruising as a medical condition and the use of Alternate Light Source photography and technology to improve injury assessment. A summary of current evidence-based research into ALS photography and its current validity and testimonial value will be discussed. Highlights of this presentation include:

• Science associated with Alternate Light Source photography.

• Bruising as well as timing and dating of injuries.

• Mimics and false positives/negatives associated with ALS use.

• Goals for future ALS research.

• Goals for knowledgeable medical experts related to bruising and ALS testimony.

• Case studies and sample cross exam questions for opposing expert witness related to ALS.

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