Mechanisms in hydrocephalus revealed by neuroimaging

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Increased PVWM diffusion <strong>in</strong> experimental HC Decreased diffusion due to compression of extracellular space?? Massicotte et al, JNS 2000
First demonstration of DTI changes Areas of decreased AND <strong>in</strong>creased FA Assaf et al, AJNR 2006
Page 1 and 2: Neuroimaging approaches for elucida
Page 3 and 4: Neurology. 2012 Jul 3. [Epub ahead
Page 5 and 6: CSF flow Techniques • Cine phase
Page 7 and 8: There is abundant literature on the
Page 9 and 10: Toward mechanisms - Relationship be
Page 11 and 12: Changes Is there a in relationship
Page 13 and 14: Possible confounds - Physiological
Page 15 and 16: 4D phase contrast imaging - but wha
Page 17 and 18: time Real-time CSF flow during phys
Page 19 and 20: How is Compliance Measured Invasive
Page 21 and 22: The Physiologic Basis of MR-ICP IC
Page 23 and 24: How is dP Measured? • The pressur
Page 25 and 26: MR Elastography Freimann et al, Neu
Page 27 and 28: … but no change in compliance wit
Page 29 and 30: CBF Techniques - 133 Xe-CT - 15 O
Page 31 and 32: CBF by PET (NPH) CBF decreased, glo
Page 33 and 34: CBF by PCMRI • Increased with shu
Page 35 and 36: CBF by SPECT CBF marginally changed
Page 37 and 38: Diffusion Techniques • MRI - Dif
Page 39: Why would diffusion NOT be isotropi
Page 43 and 44: ↓ FA increased, ↑MD in iNPH not
Page 45 and 46: FA/MD in corticospinal tract Correl
Page 47 and 48: Increased FA in caudate … improve
Page 49 and 50: Liliefeld et al, JNSPeds 2009
Page 51 and 52: Functional MRI ???
Page 53: Acknowledgements Pat McAllister, Ph

Mechanisms in hydrocephalus revealed by neuroimaging

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