Clinical evaluation of IVP,CTU and MRU in the diagnosis of urinary system stones / 医学研究生学报

ABSTRACT

Objective:To explore the clinical application in urinary system stones of the inspection technologies intravenous pyelography (IVP),computer tomography urography (CTU) and magnetic resonance urography (MRU). Methods:We collected 100 cases of urinary system stones on which 80 were carried out to IVP,60 to CTU and 35 to MRU,25 patients were implemented all 3 examinations. CTU and MRU are reconstructed with multi-level reorganization (MPR),curved projection reproduction (CPR),volume reproduction (VR) and the maximum intensity projection (MIP). Results:Stones were found in 73 patients of the 80 people by IVP,the diagnosis rate is 91.3 %. Stones were found in all the 60 patients except 1 by CTU with images direct and accurate,the diagnosis rate was 98.1 %. By the MRU,stones were found in 20 of the 35 patients at a display rate of 57.1 %,with images displayed in a low stone location signal,filling defect and the hydrocele circs of renal pelvis and ureter. Conclusion:IVP is a simple method,easy-to-patient acceptance and has a high detection rate of stones; CTU has a good image quality and the detection rate is higher than the stone IVP. By combining with the original cross-sectional image,the rate of diagnosis is up to 98%; as a non-invasive and no contrast agent approach,MRU is also very important in the diagnosis of stones.