In 2002, Sarah Hilgenberg was in her first quarter at Stanford University School of Medicine in Palo Alto, California, when a classmate, Matthew Kirschen, asked if she'd be interested in getting her brain scanned for his memory study. She agreed immediately, glad for the $40 and the chance to help. A healthy college athlete, she had no reason to suspect that anything was amiss. "You have a beautiful brain," she heard Kirschen say over the speaker as she lay in the MRI chamber. As he looked at the images, however, Kirschen says a knot formed in his stomach. When she asked to see her scans, he made excuses for not showing them and asked a barrage of questions: Had she been having headaches? Vision problems? When she left, he rushed the scans to Gary Glover, the lab director, and the on-call radiologist.
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