Keyphrases
Headache
100%
Sildenafil
69%
Phosphodiesterase Type 5 Inhibitors
67%
Cerebral Arteries
61%
Cyclic GMP
53%
Migraine
39%
Phosphodiesterase 3 (PDE3)
38%
Placebo
37%
Middle Cerebral Artery
34%
Migraine without Aura (MWoA)
34%
Becker muscular Dystrophy
30%
Regional Cerebral Blood Flow (rCBF)
29%
Stroke Patients
27%
Endothelial Function
27%
Lacunar Stroke
27%
Migraine-like
26%
Cyclic Adenosine Monophosphate (cAMP)
26%
Cerebral Hemodynamics
24%
Neuronal Nitric Oxide Synthase (nNOS)
23%
Calcitonin Gene-related Peptide
23%
Nitric Oxide
23%
Dilatation
20%
Healthy Volunteers
18%
Dipyridamole
17%
Magnetic Resonance Imaging
17%
Acute Stroke
16%
PDE5A
16%
Glyceryl Trinitrate
16%
Atrial Fibrillation
16%
Ischemic Stroke
15%
Arterial Diameter
15%
Cerebral Blood Flow
15%
Medicine and Dentistry
Apoplexy
61%
Sildenafil
57%
Headache
52%
Brain Blood Flow
41%
Migraine
37%
Cyclic GMP
33%
Systematic Review
29%
Endothelial Function
27%
Phosphodiesterase V
26%
Phosphodiesterase
25%
Placebo
24%
Middle Cerebral Artery
24%
Brain Ischemia
23%
Phosphodiesterase V Inhibitor
23%
Phosphodiesterase III
20%
Magnetic Resonance Imaging
19%
Hemodynamic
18%
Computer Assisted Tomography
18%
Atrial Fibrillation
16%
Nitric Oxide
16%
Tadalafil
16%
Becker Muscular Dystrophy
15%
Enzymatic Hydrolysis
15%
Neuroscience
Headache
67%
Migraine
64%
Cerebrovascular Accident
58%
Sildenafil
45%
Phosphodiesterase V
44%
Placebo
36%
Middle Cerebral Artery
31%
Auras
24%
Nitric Oxide
22%
Randomized Controlled Trial
22%
Cyclic Guanosine Monophosphate
21%
Phosphodiesterase
21%
Brain Ischemia
20%
Cyclic Adenosine Monophosphate
19%
Trigeminal Ganglion
19%
Cerebrovascular Disease
17%
Muscular Dystrophy
16%