Keyphrases
Arterial Diameter
100%
Middle Cerebral Artery
100%
Migraine
100%
Sildenafil
100%
Dilatation
50%
Cyclic GMP
50%
Cerebral Arteries
37%
Placebo
25%
Regional Cerebral Blood Flow (rCBF)
25%
Heart Rate
25%
Migraine Attack
25%
Pressure Rate
12%
Systolic Blood Pressure
12%
Diastolic Blood Pressure
12%
Placebo-controlled
12%
Blood Pressure
12%
Clinical Application
12%
Mechanism of Action
12%
Radial Artery
12%
Migraine without Aura (MWoA)
12%
Single-photon Emission Computed Tomography (SPECT)
12%
Vasodilatation
12%
Migraine Patients
12%
Sensory Nerves
12%
Extracranial Arteries
12%
Nerve Terminal
12%
Nitric Oxide
12%
Viagra
12%
Phosphodiesterase Type 5 Inhibitors
12%
Blood Flow Velocity
12%
Headache Response
12%
Selective Inhibitor
12%
Nitric Oxide Donors
12%
Brainstem
12%
Temporal Artery
12%
Inhalation
12%
Site of Action
12%
Tenderness
12%
Xenon-133
12%
Pericranial Tenderness
12%
Transcranial Doppler Ultrasonography
12%
Pericranial muscles
12%
High-frequency Ultrasonography
12%
Neurovascular Disease
12%
Triggering Mechanism
12%
Medicine and Dentistry
Migraine
100%
Middle Cerebral Artery
100%
Sildenafil
100%
Cyclic GMP
44%
Artery
44%
Placebo
33%
Brain Blood Flow
22%
Diastolic Blood Pressure
11%
Systolic Blood Pressure
11%
Disease
11%
Blood Pressure
11%
Headache
11%
Echography
11%
Migraine without Aura
11%
Radial Artery
11%
Vasodilatation
11%
Nitric Oxide Donor
11%
Nitric Oxide
11%
Phosphodiesterase V
11%
Brainstem
11%
Temporal Artery
11%
Blood Flow Velocity
11%
Single-Photon Emission Computed Tomography
11%
Transcranial Doppler Ultrasonography
11%
Afferent Nerve Fiber
11%
Xenon 133
11%
Neuroscience
Migraine
100%
Middle Cerebral Artery
100%
Sildenafil
100%
Cyclic Guanosine Monophosphate
40%
Placebo
30%
Nitric Oxide
20%
Crossover Study
10%
Headache
10%
Doppler Ultrasonography
10%
Single-Photon Emission Computed Tomography
10%
Transcranial Doppler
10%
Ultrasonography
10%
Auras
10%
Sensory Nerve
10%
Afferent Nerve Fiber
10%
Phosphodiesterase V
10%
Brainstem
10%