Web1 Apr 2001 · The superior sensitivity and specificity of helical CT allow urolithiasis to be diagnosed or excluded definitively and expeditiously without the potential harmful effects … These depend on the stone composition and vary according to modality. The much greater sensitivity of CT to tissue attenuation means that some stones radiolucent on plain radiography are nonetheless radiopaque on CT. Calcium-containing stones are radiopaque: 1. calcium oxalate +/- calcium phosphate 2. struvite … See more Most patients tend to present between 30-60 years of age 1. The lifetime incidence of renal stones is high, seen in as many as 5% of women and 12% of males. By far the most common stone is calcium oxalate, however, the exact … See more Although some renal stones remain asymptomatic, most will result in pain. Small stones that arise in the kidney are more likely to pass … See more Indications for surgical management include: 1. larger stones, typically those above 5 mm in size 2. extended duration of symptoms 3. … See more The composition of urinary tract stones varies widely depending upon metabolic alterations, geography, and presence of infection, and their size varies from gravel to staghorn calculi. … See more
An overview of kidney stone imaging techniques - Nature
Web26 May 2024 · A total of 1286 CT scans were reviewed, and the prevalence of obstructive urolithiasis was 44.0% (351/797) in the NCCT group and 18.7% (86/459) in the CECT … Web26 Jul 2016 · The sensitivity of KUB and US combined was 78% (95% CI 64–89) and increased with size: 73% (39–94%) for 0–4 mm, 77% (56–91%) for 5–10 mm and 89% … induction and static discharge lightning
Analysis of stone-free rates and residual fragment sizes following ...
Web29 Jul 2004 · Background To determine accuracy of ultrasound (US) kidney, ureter and bladder (KUB) compared to un-enhanced helical CT (UHCT) in patients with renal failure in the diagnosis of stone and obstruction. Methods This is a case controlled study conducted in the period from June 2000 to July 2003 at a university hospital. All patients had both US … Web16 Nov 2024 · HUC ST more accurately differentiated the two groups with a specificity of 90.6%, sensitivity 88.9%, PPV 93% and NPV 85.3% at a cut-off of 825 HU (Additional file 2: Figure S1). Mean surgical time was 123 (40–240) minutes, medium hospital stay was 6 … WebA meta-analysis of non-contrast CT diagnoses of renal tract calculi has demonstrated a pooled sensitivity of 93.1% and specificity of 96.6%. 17 In patients with a body mass index <30 kg/m 2, sensitivity for detection of stones >3 mm in size is 100%. 18. Figure 1. Diagnostic imaging pathway of renal tract pain. 37 Click here to enlarge induction anesthesia meaning