. American X-ray journal . OUDIN RESONATOR. Robinson then read a paper of which thefollowing is an abstract: Diagnosis of Ureteral x-ray lias made a new era in thediagnosis of ureteral calculi. Previousto the x-ray there was no pathognomonic symptom. The old classic symptoms ofpain or ureteral colic hematuria and theexpulsion of a calculus is a medical final court of diagnosis of a ureteralcalculus is an x-ray. At first the x-raywas uncertain in this diagnosis, but withthe improvement of the method it isnow a last resort. The x-ray is the sov-ereign method to detect a ur
. American X-ray journal . OUDIN RESONATOR. Robinson then read a paper of which thefollowing is an abstract: Diagnosis of Ureteral x-ray lias made a new era in thediagnosis of ureteral calculi. Previousto the x-ray there was no pathognomonic symptom. The old classic symptoms ofpain or ureteral colic hematuria and theexpulsion of a calculus is a medical final court of diagnosis of a ureteralcalculus is an x-ray. At first the x-raywas uncertain in this diagnosis, but withthe improvement of the method it isnow a last resort. The x-ray is the sov-ereign method to detect a ureteral cal-culus. There are at present two classes of phy-. DARSONVAL SPIRAL. sicians. The one class claims that a sha-dow is positive evidence that a calculusis present and that a negative result in-dicates that a calculus is absent. Thesecond class claims that a negative re-sult does not exclude a calculus. Dr. Iiobert S. Gregg and I have provedin Dr. Harry Pratts Laboratory that allisolated crystal]zed urinary salts when 321 THE AMERICAN X-RAY JOURNAL. exposed to the x-ray will cast a shadowof definite contour, density and dimen-sions. We also demonstrated by exposingsome thirty-five urinary calculi expelledby the patient himself, and some twentyureteral calculi removed surgically, thata shadow of definite contour and dimen-sion was cast in every case. From overfive years of painstaking x-ray work wehave come to the opinion that every ure-teral calculus should cast a shadow. Thepatient should be on the dorsum withlegs flexed on a double adjustable inclinedplane, head flexed with sand bags, trac-tus intestinalis completely evacuated andone-e
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