males and females greater than or equal to 18 years of age
current regular user of e-cigarettes (use at least once daily for the past 30 days) with nicotine strength > 6mg/ml
health medical history
abstinent from any tobacco/nicotine use for 4 hours prior to imaging

NCT03491059_inc_T1
Person
males
NCT03491059_inc_T2
Person
females
NCT03491059_inc_T3
Person
age
NCT03491059_inc_T4
Value
greater than or equal to 18 years
NCT03491059_inc_T5
Person
user
NCT03491059_inc_T6
Qualifier
regular
NCT03491059_inc_T7
Qualifier
e-cigarettes
NCT03491059_inc_T8
Multiplier
at least once daily
NCT03491059_inc_T9
Temporal
for the past 30 days
NCT03491059_inc_T10
Measurement
nicotine strength
NCT03491059_inc_T11
Value
> 6mg/ml
NCT03491059_inc_T12
Observation
medical history
NCT03491059_inc_T13
Qualifier
health
NCT03491059_inc_T14
Condition
abstinent
NCT03491059_inc_T15
Drug
tobacco
NCT03491059_inc_T16
Drug
nicotine
NCT03491059_inc_T17
Scope
tobacco/nicotine
NCT03491059_inc_T18
Temporal
for 4 hours prior to imaging
NCT03491059_inc_T19
Reference_point
imaging