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20.10.2015 | Computed Tomography

Comparison of the image qualities of filtered back-projection, adaptive statistical iterative reconstruction, and model-based iterative reconstruction for CT venography at 80 kVp

verfasst von: Jin Hyeok Kim, Ki Seok Choo, Tae Yong Moon, Jun Woo Lee, Ung Bae Jeon, Tae Un Kim, Jae Yeon Hwang, Myeong-Ja Yun, Dong Wook Jeong, Soo Jin Lim

Erschienen in: European Radiology | Ausgabe 7/2016

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Abstract

Purpose

To evaluate the subjective and objective qualities of computed tomography (CT) venography images at 80 kVp using model-based iterative reconstruction (MBIR) and to compare these with those of filtered back projection (FBP) and adaptive statistical iterative reconstruction (ASIR) using the same CT data sets.

Materials and methods

Forty-four patients (mean age: 56.1 ± 18.1) who underwent 80 kVp CT venography (CTV) for the evaluation of deep vein thrombosis (DVT) during 4 months were enrolled in this retrospective study. The same raw data were reconstructed using FBP, ASIR, and MBIR. Objective and subjective image analysis were performed at the inferior vena cava (IVC), femoral vein, and popliteal vein.

Results

The mean CNR of MBIR was significantly greater than those of FBP and ASIR and images reconstructed using MBIR had significantly lower objective image noise (p < .001). Subjective image quality and confidence of detecting DVT by MBIR group were significantly greater than those of FBP and ASIR (p < .005), and MBIR had the lowest score for subjective image noise (p < .001).

Conclusion

CTV at 80 kVp with MBIR was superior to FBP and ASIR regarding subjective and objective image qualities.

Key Points

• MBIR provides superior image quality compared with FBP and ASIR

• CTV at 80kVp with MBIR improves diagnostic confidence in diagnosing DVT

• CTV at 80kVp with MBIR presents better image quality with low radiation

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Titel: Comparison of the image qualities of filtered back-projection, adaptive statistical iterative reconstruction, and model-based iterative reconstruction for CT venography at 80 kVp
verfasst von: Jin Hyeok Kim
Ki Seok Choo
Tae Yong Moon
Jun Woo Lee
Ung Bae Jeon
Tae Un Kim
Jae Yeon Hwang
Myeong-Ja Yun
Dong Wook Jeong
Soo Jin Lim
Publikationsdatum: 20.10.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 7/2016
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-015-4060-1

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Comparison of the image qualities of filtered back-projection, adaptive statistical iterative reconstruction, and model-based iterative reconstruction for CT venography at 80 kVp

Abstract

Purpose

Materials and methods

Results

Conclusion

Key Points

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Abstract

Purpose

Materials and methods

Results

Conclusion

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