Low-Dose Unenhanced Computed Tomography with Iterative Reconstruction for Diagnosis of Ureter Stones
Yonsei Medical Journal
; : 389-396, 2018.
Article
в En
| WPRIM
| ID: wpr-714671
Ответственная библиотека:
WPRO
ABSTRACT
PURPOSE:
To study the clinical application of low-dose unenhanced computed tomography with iterative reconstruction technique (LDCT-IR) on renal colic in the emergency department. MATERIALS ANDMETHODS:
We conducted a prospective, single-blinded, randomized, and non-inferiority study. From March 2014 to August 2015, 112 patients with renal colic were included, and were randomized to either LDCT-IR (n=46) or standard-dose unenhanced CT (SDCT) (n=66) groups. The accuracy of urolithiasis diagnosis was the primary endpoint of this study. Radiation dose, size and location of the stone, hydronephrosis, other diseases except urolithiasis, and results of treatment were analyzed between the two groups.RESULTS:
The average effective dose radiation of SDCT was approximately four times higher than that of LDCT-IR (6.52 mSv vs. 1.63 mSv, p < 0.001). There was no significant difference in the accuracy of ureteral stone diagnosis between the two groups (LDCT-IR group 96.97% vs. SDCT group 98.96%, p=0.392). No significant difference was observed regarding the size and location of a stone, hydronephrosis, and diagnosis of other diseases, except urolithiasis. False negative results were found in two LDCT-IR patients and in one SDCT patient. In these patients, stones were misread as vascular calcification, and were difficult to diagnose because evidence of hydronephrosis and ureteral dilatation was not found.CONCLUSION:
LDCT-IR, as a first-line imaging test, was non-inferior to SDCT with respect to diagnosis of ureter stones, and was clinically available for the evaluation of renal colic.Key words
Полный текст:
1
База данных:
WPRIM
Основная тема:
Ureter
/
Prospective Studies
/
Diagnosis
/
Dilatation
/
Emergency Service, Hospital
/
Urolithiasis
/
Renal Colic
/
Vascular Calcification
/
Hydronephrosis
Тип исследования:
Clinical_trials
/
Diagnostic_studies
/
Observational_studies
Пределы темы:
Humans
Язык:
En
Журнал:
Yonsei Medical Journal
Год:
2018
Тип:
Article