RT Book, Section
A1 Dillon, William P.
A2 Jameson, J. Larry
A2 Fauci, Anthony S.
A2 Kasper, Dennis L.
A2 Hauser, Stephen L.
A2 Longo, Dan L.
A2 Loscalzo, Joseph
SR Print(0)
ID 1156521399
T1 Neuroimaging in Neurologic Disorders
T2 Harrison's Principles of Internal Medicine, 20e
YR 2018
FD 2018
PB McGraw-Hill Education
PP New York, NY
SN 9781259644016
LK accessmedicine.mhmedical.com/content.aspx?aid=1156521399
RD 2024/04/18
AB Numerous  noninvasive  imaging  options  are  available  to  clinicians  evaluating  patients  with  neurologic  disorders.  These  include  computed  tomography  (CT)  and  variations  CT  angiography  (CTA),  perfusion  CT  (pCT),  and  dual  energy  CT  and  magnetic  resonance  (MR)  imaging  (MRI)  and  variations  MR  angiography  (MRA),  MR  vessel  wall  imaging,  functional  MRI  (fMRI),  MR  spectroscopy  (MRS),  MR  neurography  (MRN),  diffusion  and  diffusion  tensor  MR  imaging,  susceptibility-weighted  MR  imaging  (SWI),  arterial  spin  label  imaging  (ASL)  and  perfusion  MRI  (pMRI).  Furthermore,  a  number  of  interventional  neuroradiologic  techniques  have  matured  including  catheter  embolization,  stent  retrieval  thrombolysis,  aneurysm  coiling  and  stenting,  as  well  as  numerous  techniques  for  spine  disorders,  including  CT  myelography,  fluoroscopy  and  CT-guided  transforaminal  and  translaminar  epidural  and  nerve  root  injections,  radiofrequency  ablation  and  blood  patches.  Multidetector  CTA  (MDCTA)  and  gadolinium-enhanced  MRA  techniques  have  reduced  the  need  for  catheter-based  angiography,  which  is  now  reserved  for  patients  in  whom  small-vessel  detail  is  essential  for  diagnosis  or  for  whom  concurrent  interventional  therapy  is  planned  (Table  416-1).