Consistency of Renal Stone Volume Measurements Across CT Scanner Model and Reconstruction Algorithm Configurations

The objective of this prospective study is to evaluate the consistency of renal stone volume estimation using dual-energy CT across scanner model and reconstruction algorithm configurations. Patients underwent scanning with routine kidney stone composition protocols on both second- and third-generat...

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Bibliographic Details
Published in:American journal of roentgenology (1976) Vol. 209; no. 1; p. 116
Main Authors: Huang, Alice E, Montoya, Juan C, Shiung, Maria, Leng, Shuai, McCollough, Cynthia H
Format: Journal Article
Language:English
Published: United States 01.07.2017
Subjects:
Algorithms
Humans
Kidney Calculi - diagnostic imaging
Prospective Studies
Radiation Dosage
Radiographic Image Interpretation, Computer-Assisted - methods
Tomography Scanners, X-Ray Computed
nephrolithiasis
CT
stone volume
renal stone
iterative reconstruction
ISSN:1546-3141, 1546-3141
Online Access:Get more information
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Summary:The objective of this prospective study is to evaluate the consistency of renal stone volume estimation using dual-energy CT across scanner model and reconstruction algorithm configurations. Patients underwent scanning with routine kidney stone composition protocols on both second- and third-generation dual-source CT scanners. Images were reconstructed using filtered back projection and iterative reconstruction (IR). In addition, a modified IR kernel on the third-generation CT scanner was evaluated. Individual kidney stone volumes were determined and compared. No significant difference was noted in measured volumes between filtered back-projection data, IR data from the second-generation scanner, and the modified IR kernel data (p > 0.05). The third-generation commercially available IR kernel yielded lower volumes than did the other configurations (p < 0.0001). With the use of a modified kernel for the third-generation scanner, patients being monitored for changes in kidney stone volume can undergo scanning performed with second- or third-generation dual-energy CT scanners, and the images obtained can be reconstructed with either filtered back projection or IR without the introduction of bias into kidney stone volume measurements.
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ISSN:1546-3141
1546-3141
DOI:10.2214/AJR.16.16940