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Conventional and reduced radiation dose of 16-MDCT for detection of nephrolithiasis and ureterolithiasis.

Publication ,  Journal Article
Paulson, EK; Weaver, C; Ho, LM; Martin, L; Li, J; Darsie, J; Frush, DP
Published in: AJR Am J Roentgenol
January 2008

OBJECTIVE: Our purpose was to prospectively compare the reader compatibility and acceptability of a range of reduced-dose 16-MDCT images with standard-dose 16-MDCT images for the detection of nephroureterolithiasis using a dose reduction simulation technique. SUBJECTS AND METHODS: The study was HIPAA compliant and institutional review board approved. Fifty consecutive patients with suspected nephrolithiasis were recruited to undergo conventional renal stone unenhanced 16-MDCT with at least 160 mA. Noise was then artificially introduced to simulate levels of 70, 100, and 130 mA. Three blinded independent readers interpreted the original and simulated-dose scans for the location and number of renal and ureteral calculi and secondary signs of obstruction using a 5-point confidence scale. RESULTS: Reader acceptability of scans was inversely related to noise. There was no significant reduction in readers' confidence in detection or exclusion of renal collecting system calculi with simulated reduction of mA of 70, 100, and 130 compared with the standard-dose study. However, for ureteral calcifications, there was a decrease in confidence for the detection or exclusion of ureterolithiasis at an mA of 70 (35 mAs). CONCLUSION: An mA as low as 70 (35 mAs) is acceptable for evaluation of nephrolithiasis. However, the evaluation of ureterolithiasis is compromised with an mA of 70.

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Published In

AJR Am J Roentgenol

DOI

EISSN

1546-3141

Publication Date

January 2008

Volume

190

Issue

1

Start / End Page

151 / 157

Location

United States

Related Subject Headings

  • Ureterolithiasis
  • Tomography, X-Ray Computed
  • Radiographic Image Enhancement
  • Radiation Dosage
  • Nuclear Medicine & Medical Imaging
  • Nephrolithiasis
  • Middle Aged
  • Male
  • Humans
  • Female
 

Citation

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Paulson, E. K., Weaver, C., Ho, L. M., Martin, L., Li, J., Darsie, J., & Frush, D. P. (2008). Conventional and reduced radiation dose of 16-MDCT for detection of nephrolithiasis and ureterolithiasis. AJR Am J Roentgenol, 190(1), 151–157. https://doi.org/10.2214/AJR.07.2816
Paulson, Erik K., Carolyn Weaver, Lisa M. Ho, Lucie Martin, Jianying Li, James Darsie, and Donald P. Frush. “Conventional and reduced radiation dose of 16-MDCT for detection of nephrolithiasis and ureterolithiasis.AJR Am J Roentgenol 190, no. 1 (January 2008): 151–57. https://doi.org/10.2214/AJR.07.2816.
Paulson EK, Weaver C, Ho LM, Martin L, Li J, Darsie J, et al. Conventional and reduced radiation dose of 16-MDCT for detection of nephrolithiasis and ureterolithiasis. AJR Am J Roentgenol. 2008 Jan;190(1):151–7.
Paulson, Erik K., et al. “Conventional and reduced radiation dose of 16-MDCT for detection of nephrolithiasis and ureterolithiasis.AJR Am J Roentgenol, vol. 190, no. 1, Jan. 2008, pp. 151–57. Pubmed, doi:10.2214/AJR.07.2816.
Paulson EK, Weaver C, Ho LM, Martin L, Li J, Darsie J, Frush DP. Conventional and reduced radiation dose of 16-MDCT for detection of nephrolithiasis and ureterolithiasis. AJR Am J Roentgenol. 2008 Jan;190(1):151–157.

Published In

AJR Am J Roentgenol

DOI

EISSN

1546-3141

Publication Date

January 2008

Volume

190

Issue

1

Start / End Page

151 / 157

Location

United States

Related Subject Headings

  • Ureterolithiasis
  • Tomography, X-Ray Computed
  • Radiographic Image Enhancement
  • Radiation Dosage
  • Nuclear Medicine & Medical Imaging
  • Nephrolithiasis
  • Middle Aged
  • Male
  • Humans
  • Female