Clinical value of non-enhanced CT value in predicting urinary calculi ESWL

Abstract

Objective\r\nTo analyze the relationship between non-enhanced CT value of unilateral ureteral calculi and renal calculi and the rate of extracorporeal shock wave lithotripsy (ESWL), and to investigate the value of predicting the therapeutic effect of ESWL by CT.\r\n\r\n\r\nMethods\r\nEighty patients with unilateral ureteral calculi or renal calculi treated with ESWL in our hospital from January 2013 to December 2016 were selected. According to the different CT values, the patients were divided into high density group (CT≥1000 HU), middle density group (500 HU<CT<1000 HU) and low-density group (CT≤500 HU). After collecting the gravel, the patient ruled out the stone powder in vitro and analyzed by BRUKER TENSOR27 Fourier-transform infrared spectroscopy in Germany. compare the three groups of patients with gravel crushing rate, gravel success rate, residual stone ratio, gravel clearance rate and gravel frequency, impact frequency and other data were compared and the differences in the composition of the three groups of patients with stones were analyzed.\r\n\r\n\r\nResults\r\nThe clearance rate of stones in the high-density group was lower than that in the middle-low density group (P 0.05). CT values of calcium phosphate / calcium oxalate and magnesium ammonium phosphate stones were statistically significant (P<0.05). In the high-density group, there were many stones with calcium phosphate / calcium oxalate as the main component, the ammonium phosphate in the medium and low density groups as the main component.\r\n\r\n\r\nConclusions\r\nThe efficacy of ESWL can be predicted according to the CT value of urethral calculi and renal calculi. The residual and clearance rate of lithotripsy, the number of impact and the number of treatments are positively correlated with CT value. ESWL efficacy can be predicted according to the CT value of the stone in patients. Urinary calculi program provides a quantifiable reference index.\r\n\r\n\r\nKey words: \r\nUrinary Calculi;\xa0Tomography Scanners, X-Ray Computed;\xa0Lithotripsy