Hounsfield units-a significant predictor of lasering time and energy in the management of upper urinary tract stones usi
- PDF / 583,336 Bytes
- 5 Pages / 595.276 x 790.866 pts Page_size
- 7 Downloads / 155 Views
UROLOGY - ORIGINAL PAPER
Hounsfield units‑a significant predictor of lasering time and energy in the management of upper urinary tract stones using Holmium: Yttrium–Aluminum Garnet lasers Roshane Shahid Rana1 · M. Hammad Ather1 Received: 15 February 2020 / Accepted: 10 March 2020 © Springer Nature B.V. 2020
Abstract Purpose To study the impact of stone density as assessed by Hounsfield units (HU) on total laser energy (TLE) used and total laser time (TLT) spent in complete fragmentation of upper urinary tract stones. In addition, we also studied the impact of stone composition on the laser energy and time required for fragmentation. Methods Thirty consecutive patients fulfilling inclusion and exclusion criteria were included in the study. Patients with renal or proximal ureteral stones with a size of 5–20 mm were included. Stone fragmentation was performed using Ho:YAG 100 W laser and TLT and TLE were correlated with the HU and stone composition. Results The mean stone diameter was 10.83 ± 3.5 mm and the mean HU was 893 ± 315. The mean TLE and TLT were 8.86 ± 3.12 kJ and 18.46 ± 6.9 min, respectively. We observed a strong positive correlation between HU and TLE (r = 0.84, p value
Data Loading...
