fixed in (someone's) mind

Translations
запечатлелось в (чьей-то) памяти
The image of the accident was fixed in her mind.
Образ аварии запечатлелся в её памяти.
Definitions
A phrase indicating that a particular idea, belief, or memory is firmly established and not easily changed or forgotten in someone's thoughts.
Words
mind

noun
ум
fix

verb
чинить