**1. Introduction**

Breast reconstruction is becoming more popular under the basis of tumor safety. The rate of immediate or delayed reconstruction following breast cancer surgery has grown dramatically [1, 2]. Deep inferior epigastric perforator (DIEP) flap has become the gold standard in autologous breast reconstruction due to low donor site problems and significant abdominal esthetic improvement [3]. While DIEP flap surgery has become commonplace, the anatomy of the deep inferior epigastric artery perforator is very diverse, and flap perforator selection remains difficult. Color Doppler ultrasonography was the first approach used to evaluate perforators in DIEP [4]. Nevertheless, due to its strong subjectivity, time-consuming nature, high false positive rate of preoperative perforator evaluation, and lack of local anatomical features, its applicability is limited to some extent. Till date, computed tomography angiography (CTA) has been an essential assessment approach prior to DIEP surgery [5, 6]. CTA can provide more detailed preoperative anatomical information than color Doppler ultrasound examination, which can help to

better select the dominant perforator of the flap before surgery, clarify the diameter of the perforator vessels, the characteristics of the perforator vessels in the muscle, and the location of the perforator point, so as to effectively guide the operation process [7].
