Women presenting with primary or secondary infertility and are undergoing investigation of tubal patency assessment will be subjected to: * The examination is performed between days 5 and 10 of the menstrual cycle. * Routine antibiotic prophylaxis using oral Azithromycin the day before and routine administration of NSAID rectal suppository one hour before the procedure * Initially, real-time 2D +/- 3D vaginal ultrasound assessment of the pelvis * The cervix is to be visualized with a Cusco speculum and to be cleaned with an antiseptic then A No. 5 pediatric Foley catheter will be introduced into the cervical os, using a tenaculum if necessary. The balloon is to be positioned in the lower uterine cavity and to be inflated with 2 ml of saline to prevent backflow of contrast medium through the cervix then the speculum will be removed and the vaginal transducer is going to be reintroduced in the longitudinal plane to confirm correct placement of the catheter. * Initial 3-5 ml of foam contrast is to be introduced slowly into the endometrial cavity while the flow of contrast medium in each tube is evaluated using grayscale and power Doppler imaging * Power Doppler is very helpful to confirm the direction of the flow as well as the acceleration during injection. * Tubal patency and quality of visualization are classified according the following parameters: 1. Flow over the whole length of the tube, fimbrial outflow or peritoneal spillage of contrast provided definite evidence of complete (i.e. proximal and distal) tubal patency. 2. Paracornual flow only without visualization of fimbrial outflow or peritoneal spillage suggests at least proximal patency. 3. Contrast filling of the endometrial cavity without cornual flow suggests possible tubal occlusion. 4. Technical difficulty making tubal evaluation impossible * Standard laparoscopic evaluation with the dye test (methylene blue staining) is to be performed 1 day after ultrasound tests with 1 day of hospitalization under general anesthesia.
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Tubal patency
Timeframe: During the ultrasound