This is the 2248th most frequent Korean word.
치료에
"치료에" means "in treatment" or "for treatment."
Here '치료에' is used to indicate the focus (treatment) being concentrated on.
의사는 환자의 치료에 집중했습니다.
The doctor focused on the patient's treatment.
In this sentence, '치료에' denotes the context or area (cancer treatment) where technology is applied.
새 기술이 암 치료에 도입되었습니다.
New technology has been introduced into cancer treatment.
This usage of '치료에' expresses the domain or effect (treatment) where the medication shows results.