[en] Purpose: In an effort to reduce patient radiation dose during selective fallopian tube catheterization, the diagnostic adequaey of fluoroscopic images was compared with digital radiographic images in both a phantom study and a clinical study.Methods: For the phantom study polyethylene tubes with inner diameters of 1.30, 0.95, 0.80, 0.57, and 0.45 mm were used. Randomly selected tubes with/without stenoses, recorded by digital radiographic and last-image hold fluoroscopic images, were presented to five blinded radiologists, and reeeiver-operating characteristic (ROC) analyses were performed. For the clinical study tubal visualization as well as detectability of stenoses and occlusions were analyzed in 14 women using a 2-way analysis of variance for nonre-peated measures.Results: The phantom study showed no significant differences between the two imaging techniques for 0.57-mm-diameter and larger tubes; in contrast, fluoroscopic images provided significantly lower detectability of stenoses in 0.45-mm-diameter tubes (p<0.05). The clinical study showed inferior tubal visualization and diagnostic Performance for fluoroscopic images.Conclusions: Although fluoroscopic images have inferior diagnostic capability in detection of tubal stenoses and occlusions, these images may be adequate for documenting tubal patency with spill into the peritoneal cavity.