Category: Neuroradiology Expert Witness

  • Neuroradiology Expert’s Supplemental Report Excluded Because It Adds New Opinions

    Neuroradiology Expert’s Supplemental Report Excluded Because It Adds New Opinions

    Plaintiff, Lori Mendez suffered a head injury while she was shopping at a Hobby Lobby store in Reno on June 5, 2021. It all started when she reached for an item on a shelf that was higher up. The shelves were close together and as Mendez grabbed an item off of the lower shelf, the top shelf came unhooked and crashed down on her head.

    Plaintiff filed a motion to to strike the Defendant’s supplemental expert report of Dr. Saman Hazany, MD, DABR.

    Neuroradiology Expert Witness

    Dr. Saman Hazany is an award‑winning, Harvard‑trained neuroradiologist based in greater Los Angeles, with extensive experience in the care of patients with traumatic brain injury, spinal cord injury, stroke, epilepsy, and brain tumor.

    He holds board certification and the Certificate of Added Qualification (CAQ) in radiology and neuroradiology.

    Want to know more about the challenges Saman Hazany has faced? Get the full details with our Challenge Study report

    Discussion by the Court

    According to the Court’s scheduling order, the deadline for initial expert reports was March 25, 2024. On that date, Hobby Lobby served Plaintiff with its initial expert disclosure, which disclosed Hazany and included his November 22, 2023 initial expert report. That report listed 29 images that Hazany reviewed. On October 8, 2024, Hobby Lobby served Plaintiff with a supplemental report from Hazany, in which he reviewed an additional seven images. It is undisputed that these seven images were available to Hazany at the time of his initial expert report.

    The Supplemental Report was Untimely

    The Defendants did not appear to dispute that the disclosure was untimely. Because the parties agreed that Hazany had access to the seven images at the time of his initial report, the supplemental report was improper under Rule 26(e).

    Striking is Warranted Under Rule 37

    The Defendant primarily argued that sanctions are not warranted because the improper supplemental report was harmless. However, there is no dispute that the Defendants supplemental report reviews seven images not reviewed at all in the initial report. The supplemental report makes findings and conclusions as to several of these images, such as “No CT evidence for traumatic brain injury,” “Other etiologies including traumatic brain injury are unlikely,” and “No post-traumatic findings.”

    In this case, the deadline for rebuttal expert disclosure was May 22, 2024. The Defendants did not serve the supplemental disclosure until October 8, 2024, which was only 15 days before discovery closed. As Plaintiffs pointed out, this meant that Plaintiff’s rebuttal expert had no opportunity to review and rebut the supplement.

    The Court granted the parties multiple extensions of time during the discovery period, including an extension of the rebuttal expert deadline. Moreover, the prejudice cannot be cured when the discovery is closed.

    Held

    The Court granted the Plaintiff’s motion to strike the Defendant’s supplemental expert report of Dr. Saman Hazany.

    Key Takeaway:

    The late disclosure meant that Plaintiff’s rebuttal expert was not able to review and rebut the new conclusions and opinions present in Hazany’s supplemental report. 

    Any risk of prejudice or surprise cannot be easily be cured at this stage.

    Case Details:

    Case Caption: Mendez V. Hobby Lobby Stores, Inc.
    Docket Number: 3:23cv181
    Court Name: United States District Court, Nevada
    Order Date: July 15, 2025
  • Evaluating PTSD Imaging Experts: A Rule 702 Court Decision

    Evaluating PTSD Imaging Experts: A Rule 702 Court Decision

    In a recent legal dispute, the admissibility of expert testimony regarding medical imaging and its correlation to PTSD research was challenged. Specifically, this case highlights the importance of timeliness and the application of Rule 702 of the Federal Rules of Evidence in evaluating expert qualifications and the reliability of their opinions.

    Initially, the Defendant filed a motion in limine to limit the testimony of Travis Snyder, DO, an expert witness for the Plaintiff. Furthermore, the Defendant argued that Snyder was unqualified to testify on “imaging findings of PTSD” and that his opinions lacked supporting scientific data.

    Neuroradiology Expert Witness

    Travis Snyder is a neuroradiologist, with a certified sub-specialty in diagnosing and characterizing disorders of the nervous system, including the spine and brain. He is the residency director of radiology at Mountain View HCA hospital system and holds various academic appointments with 4 regional medical schools.

    Get the full story on challenges to Travis Snyder’s expert opinions and testimony with an in-depth Challenge Study. 

    Discussion by the Court

    Defendant’s Objections

    Firstly, the Defendant argued that Snyder, despite his expertise, was not qualified to interpret medical imaging specifically in the context of diagnosing or identifying PTSD. Moreover, the Defendant claimed that Snyder’s opinions lacked a solid foundation in established scientific data. In particular, they argued that he hadn’t provided concrete evidence, such as specific studies or research, to back up his claims about the correlation between imaging findings and PTSD.

    Plaintiff’s Opposition and Clarification:

    In response, the Plaintiff explicitly stated that Snyder would not be offering a diagnosis of PTSD based on his imaging findings. Instead, Snyder’s testimony would focus on a more limited and, according to the Plaintiff, qualified area: “whether certain imaging findings are consistent with patterns observed in PTSD-related research,” which is in line with his expertise.

    Court’s Observations and Rulings:

    The Court emphasized that the Defendant’s motion was filed significantly after the deadline for motions to exclude expert testimony, and no “good cause justification” was provided for the delay.

    Additionally, the Court determined that Snyder’s disclosed opinions were sufficient to meet the requirements of Rule 702, which mandates that expert testimony be relevant and reliable.

    Qualification

    The Court found that Snyder’s CV and deposition testimony demonstrated his qualifications to draw correlations between imagery and other scientific research.

    Reliability

    The Court deemed Snyder’s opinion regarding the link between PTSD and abnormalities in the hippocampus in peer-reviewed studies as sufficiently reliable and relevant.

    The Court clarified that Snyder will be permitted to offer the challenged opinions insofar as he does not seek to make a diagnosis and otherwise testifies consistently with his disclosed findings.

    Held

    The Court denied the Defendant’s motion to limit the testimony of Travis Snyder.

    Key Takeaways:

    • Timeliness Matters: Motions challenging expert testimony must be filed within designated deadlines.
    • Rule 702 Gatekeeping: Courts have a duty to ensure expert testimony is relevant and reliable, focusing on qualifications and a sufficient factual basis.
    • Scope of Expertise: Experts must testify within the bounds of their qualifications and disclosed opinions.

    Case Details:

    Case Caption: Skinner V. Berry Petroleum Company Et Al
    Docket Number: 1:19cv124
    Court: United States District Court, Utah
    Order Date: February 27, 2025