ObjectiveTo compare cervical catheter test and virtual hysterosalpingography (VHSG) in the evaluation of cervix before embryo transfer.DesignProspective controlled study.Materials and MethodsWe evaluated 33 consecutive patients with history of infertility. All patients were nulliparous and they had not history of cervical surgery. With the full baldder, prior to the VHSG CT scan, a gynecologist performed a cervical test with a Wallace catheter. The cervical patency, grade of resistance and uterus position were assessed. Then, patients underwent VHSG performed with a 256-slice CT scanner. CT images were evaluated by a radiologist, and the cervical patency, uterocervical angle and the presence of cervical pathology were determined.ResultsThere was a good correlation (r = 0,87) in cervical patency evaluation between both methods. Unsuccessful cervical catheter test was observed in 13 patients (39%). In these patients, VHSG detected cervical polyp in 2, cervical synequiae in 1, sinuous cervical canal in 3, and normal cervix in 7, but the uterocervical angle was < 60°. In 95% of patients with successful cervical test, the uterocervical angle was > 60°.ConclusionVHSG findings correlate with cervical catheter test in the evaluation of cervical patency. VHSG provides anatomic information useful to identify the probable cause of failure of embryo transfers and prevent them. ObjectiveTo compare cervical catheter test and virtual hysterosalpingography (VHSG) in the evaluation of cervix before embryo transfer. To compare cervical catheter test and virtual hysterosalpingography (VHSG) in the evaluation of cervix before embryo transfer. DesignProspective controlled study. Prospective controlled study. Materials and MethodsWe evaluated 33 consecutive patients with history of infertility. All patients were nulliparous and they had not history of cervical surgery. With the full baldder, prior to the VHSG CT scan, a gynecologist performed a cervical test with a Wallace catheter. The cervical patency, grade of resistance and uterus position were assessed. Then, patients underwent VHSG performed with a 256-slice CT scanner. CT images were evaluated by a radiologist, and the cervical patency, uterocervical angle and the presence of cervical pathology were determined. We evaluated 33 consecutive patients with history of infertility. All patients were nulliparous and they had not history of cervical surgery. With the full baldder, prior to the VHSG CT scan, a gynecologist performed a cervical test with a Wallace catheter. The cervical patency, grade of resistance and uterus position were assessed. Then, patients underwent VHSG performed with a 256-slice CT scanner. CT images were evaluated by a radiologist, and the cervical patency, uterocervical angle and the presence of cervical pathology were determined. ResultsThere was a good correlation (r = 0,87) in cervical patency evaluation between both methods. Unsuccessful cervical catheter test was observed in 13 patients (39%). In these patients, VHSG detected cervical polyp in 2, cervical synequiae in 1, sinuous cervical canal in 3, and normal cervix in 7, but the uterocervical angle was < 60°. In 95% of patients with successful cervical test, the uterocervical angle was > 60°. There was a good correlation (r = 0,87) in cervical patency evaluation between both methods. Unsuccessful cervical catheter test was observed in 13 patients (39%). In these patients, VHSG detected cervical polyp in 2, cervical synequiae in 1, sinuous cervical canal in 3, and normal cervix in 7, but the uterocervical angle was < 60°. In 95% of patients with successful cervical test, the uterocervical angle was > 60°. ConclusionVHSG findings correlate with cervical catheter test in the evaluation of cervical patency. VHSG provides anatomic information useful to identify the probable cause of failure of embryo transfers and prevent them. VHSG findings correlate with cervical catheter test in the evaluation of cervical patency. VHSG provides anatomic information useful to identify the probable cause of failure of embryo transfers and prevent them.