Detection of urinary stones at reduced radiation exposure: a phantom study comparing computed radiography and a low-dose digital radiography linear slit scanning system

AJR Am J Roentgenol. 2009 Jun;192(6):W271-4. doi: 10.2214/AJR.08.1502.


Objective: In this experimental study we assessed the diagnostic performance of digital linear slit scanning radiography compared with computed radiography (CR) for the detection of urinary calculi in an anthropomorphic phantom imitating patients weighing approximately 58-88 kg.

Conclusion: Compared with CR, linear slit scanning radiography is superior for the detection of urinary stones and may be used for pretreatment localization and follow-up at a lower patient exposure.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, N.I.H., Extramural

MeSH terms

  • Body Burden*
  • Humans
  • Phantoms, Imaging
  • Radiation Protection / instrumentation
  • Radiation Protection / methods*
  • Radiographic Image Enhancement / instrumentation
  • Radiographic Image Enhancement / methods*
  • Tomography, X-Ray Computed / methods*
  • Urinary Calculi / diagnostic imaging*