Spring, D B Fallopian tube occlusion rings: a consideration in the differential diagnosis of ureteral calculi. [electronic resource] - Radiology Oct 1982 - 51-2 p. digital Publication Type: Journal Article ISSN: 0033-8419 Standard No.: 10.1148/radiology.145.1.7122895 doi Subjects--Topical Terms: Diagnosis, DifferentialFemaleHumansHysterosalpingographySterilization, Tubal--instrumentationUreteral Calculi--diagnostic imaging