This study aims to evaluate and compare the Cervex-Brush A randomized crossover trial was conducted at a gynecological oncology center in Hong Kong to compare the Cervex-Brush One hundred sixty cervical cancer patients treated with primary radiotherapy and undergoing follow-up surveillance by vaginal vault cytology were recruited. The smear adequacy rate was 90.6% for Cervex-Brush There was no difference between the Orcellex ClinicalTrials.gov Identifier: NCT04461574.