각각의 환자에게 첩포시험과 피내시험을 시행하여 음성 반응을 보인 조영제를 선별하여 안전하게 재투여하였다고 보고한 바 있다.
It has been reported that the patch test and intradermal test were conducted on each patient, and the contrast agent that showed a negative reaction was selected and safely re-administered.