Comparison Between Ultrasound and Magnetic Resonance Imaging Measurements of the Optic Nerve Sheath Diameter in Patients Undergoing Intracranial Surgery: Prospective Observational Single-Center Study

Mauricio Giraldo   ^{1 *} , MD ;   Luz Maria Lopera   ^{2 *} , MD ;   Aly Balbaa   ^{3 *} , MD ;   Nelson Gonzalez   ^{1 *} , MD ;   Raffael Pereira Cezar Zamper   ^{1 *} , MD ;   Michael Mayich   ^{4 *} , MD ;   Mel Boulton   ^{5 *} , MD

¹ Department of Anesthesia and Perioperative Medicine, Schulich School of Medicine & Dentistry, Western University, London Health Sciences Centre, London, ON, Canada

² Department of Anesthesia and Perioperative Medicine, Faculty of Medicine, Dalhousie University, Queen Elizabeth II Health Sciences Centre, Halifax, NS, Canada

³ Department of Family Medicine, Faculty of Medicine, McMaster University, Hamilton Health Sciences, Hamilton, ON, Canada

⁴ Department of Neuroradiology, Schulich School of Medicine & Dentistry, Western University, London Health Sciences Centre, London, ON, Canada

⁵ Department of Neurosurgery, Schulich School of Medicine & Dentistry, Western University, London Health Sciences Centre, London, ON, Canada

*all authors contributed equally