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  1. Nephrolithiasis | Radiology Case | Radiopaedia.org

    Case Discussion Nephrolithiasis in this patient was found to be a recurring problem with at least 2 prior stones in the past.

  2. Twinkling artifact | Radiology Reference Article | Radiopaedia.org

    Jun 23, 2025 · The presence of a renal twinkling artifact on sonography has a true positive and false positive rates of about 50% for the presence of nephrolithiasis on unenhanced CT; it …

  3. Staghorn calculus (kidney) - Radiopaedia.org

    May 27, 2022 · They refer to struvite calculi involving the renal pelvis and extending into at least two calyces 7. For a general discussion of renal calculi please refer to nephrolithiasis.

  4. Nephrolithiasis on ultrasound with comet tail artifact

    In this case however ultrasound was performed, and showed very nicely the features, namely the obstructing calculus at the right vesicoureteric junction with Doppler color comet tail artifact, …

  5. Urolithiasis | Radiology Reference Article | Radiopaedia.org

    Jun 25, 2025 · Ultrasound is frequently the first investigation of the urinary tract, and although by no means as sensitive as CT, it can often identify calculi. Small stones and those close to the …

  6. Medullary nephrocalcinosis | Radiology Reference Article

    Feb 8, 2025 · Often (and perhaps unsurprisingly), the same entities may also lead to nephrolithiasis (renal calculi). Pathology Causes include 1,2: medulla hyperparathyroidism …

  7. Nephrocalcinosis | Radiology Reference Article | Radiopaedia.org

    Aug 12, 2025 · Nephrocalcinosis, previously known as Anderson-Carr kidney or Albright calcinosis, refers to the deposition of calcium salts in the parenchyma of the kidney. It is …

  8. Renal tract calculi (summary) | Radiology Reference Article ...

    Jan 14, 2024 · Ultrasound may be used in the acute setting to determine whether there is any evidence of hydronephrosis. If there is no hydronephrosis in a patient who is symptomatic, it is …

  9. Acute pyelonephritis | Radiology Reference Article | Radiopaedia.org

    Sep 8, 2025 · Ultrasound is, however, useful in assessing for local complications such as hydronephrosis, renal abscess formation, renal infarction, perinephric collections, and thus …

  10. Renal infarction | Radiology Reference Article | Radiopaedia.org

    Feb 22, 2025 · Although historically plain radiographs intravenous pyelograms (IVP) with tomography were the mainstay of imaging the kidneys, today CT IVP has become the modality …