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Comparative Study
. 2009 Jun;192(6):W271-4.
doi: 10.2214/AJR.08.1502.

Detection of Urinary Stones at Reduced Radiation Exposure: A Phantom Study Comparing Computed Radiography and a Low-Dose Digital Radiography Linear Slit Scanning System

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Free PMC article
Comparative Study

Detection of Urinary Stones at Reduced Radiation Exposure: A Phantom Study Comparing Computed Radiography and a Low-Dose Digital Radiography Linear Slit Scanning System

Zsolt Szucs-Farkas et al. AJR Am J Roentgenol. .
Free PMC article

Abstract

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.

Figures

Fig. 1
Fig. 1
Anterioposterior radiograph of the small phantom using linear slit scanning technology at 90 kV showing urinary calculi projecting both on soft tissues and pelvic bones. Please note the 5 small lead pellets attached in the four corners and in the middle of the inferior margin of the plastic sheet as fiducial markers. Image quality was rated as excellent by all readers. The measured entrance skin dose of 0.191 mGy was about 5% of that with conventional computed radiography.

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