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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| Vydané v: | American journal of roentgenology (1976) Ročník 209; číslo 1; s. 116 |
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| Hlavní autori: | , , , , |
| Médium: | Journal Article |
| Jazyk: | English |
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United States
01.07.2017
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| ISSN: | 1546-3141, 1546-3141 |
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| Abstract | 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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| AbstractList | 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. 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.OBJECTIVEThe 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.SUBJECTS AND METHODSPatients 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).RESULTSNo 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.CONCLUSIONWith 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. |
| Author | McCollough, Cynthia H Shiung, Maria Montoya, Juan C Leng, Shuai Huang, Alice E |
| Author_xml | – sequence: 1 givenname: Alice E surname: Huang fullname: Huang, Alice E organization: 1 Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905 – sequence: 2 givenname: Juan C surname: Montoya fullname: Montoya, Juan C organization: 1 Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905 – sequence: 3 givenname: Maria surname: Shiung fullname: Shiung, Maria organization: 1 Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905 – sequence: 4 givenname: Shuai surname: Leng fullname: Leng, Shuai organization: 1 Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905 – sequence: 5 givenname: Cynthia H surname: McCollough fullname: McCollough, Cynthia H organization: 1 Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905 |
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| Keywords | nephrolithiasis CT stone volume renal stone iterative reconstruction |
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| SubjectTerms | Algorithms Humans Kidney Calculi - diagnostic imaging Prospective Studies Radiation Dosage Radiographic Image Interpretation, Computer-Assisted - methods Tomography Scanners, X-Ray Computed |
| Title | Consistency of Renal Stone Volume Measurements Across CT Scanner Model and Reconstruction Algorithm Configurations |
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