TY - CHAP M1 - Book, Section TI - Neuroimaging in Neurologic Disorders 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 PY - 2018 T2 - Harrison's Principles of Internal Medicine, 20e 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). SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accesspharmacy.mhmedical.com/content.aspx?aid=1156521399 ER -