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Concurrent Session 1A: Intracranial Pressure Disorders

Session: Concurrent Session 1A: Intracranial Pressure Disorders

Imaging of High & Low Pressure Syndromes

Saturday, December 6, 2025

10:30 AM - 10:55 AM MST

Location: Trailblazers Ballroom

Faculty(s)

Andrew Callen, MD

Associate Professor of Radiology and Neurology; Director, CU CSF Leak Program
University of Colorado School of Medicine/University of Colorado Hosptial
Aurora, Colorado, United States

Disorders of cerebrospinal fluid (CSF) pressure exist along a continuum—from intracranial hypertension to spontaneous intracranial hypotension—each producing distinct yet overlapping imaging signatures. This session will review key MRI and CT findings that reflect underlying CSF and venous physiology, emphasizing practical strategies for differentiating “high” from “low” pressure syndromes and recognizing when they coexist or evolve from one to the other. Through illustrative cases, attendees will learn how to interpret imaging clues that align with clinical features such as orthostatic headache, papilledema, and rebound intracranial hypertension after treatment. The goal is to strengthen collaboration between headache specialists and radiologists by translating imaging patterns into meaningful clinical insights.

Learning Objectives:

Describe the key MRI and CT imaging findings associated with both intracranial hypertension and intracranial hypotension, and explain how these reflect underlying CSF and venous physiology.
Differentiate between high- and low-pressure syndromes using characteristic imaging patterns and clinical correlations, including cases where both conditions coexist or evolve sequentially.
Apply a structured, practical approach to interpreting neuroimaging in patients with headache, improving diagnostic accuracy and collaboration between neurologists and radiologists.