Carotid computed tomography angiography after cobalt-based alloy carotid artery stenting using ultra-high-resolution computed tomography with model-based iterative reconstruction

Shingo Kayano, RT, PhD; Hideki Ota, MD, PhD; Yoshimichi Sato, MD; Toshiki Endo, MD, PhD; Kuniyasu Niizuma, MD, PhD; Ichiro Suzuki, MD, PhD; Tsuyoshi Kawamura, MD, PhD; Kei Takase, MD, PhD

Radiology Case Reports (Dec 2021)

Carotid computed tomography angiography after cobalt-based alloy carotid artery stenting using ultra-high-resolution computed tomography with model-based iterative reconstruction

Shingo Kayano, RT, PhD,
Hideki Ota, MD, PhD,
Yoshimichi Sato, MD,
Toshiki Endo, MD, PhD,
Kuniyasu Niizuma, MD, PhD,
Ichiro Suzuki, MD, PhD,
Tsuyoshi Kawamura, MD, PhD,
Kei Takase, MD, PhD

Affiliations

Shingo Kayano, RT, PhD: Department of Radiological Technology, Tohoku University Hospital, 1 1 Seiryo machi, Aoba ku, Sendai, Miyagi 980-8574, Japan; Corresponding author. S. Kayano.
Hideki Ota, MD, PhD: Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Japan
Yoshimichi Sato, MD: Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
Toshiki Endo, MD, PhD: Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
Kuniyasu Niizuma, MD, PhD: Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
Ichiro Suzuki, MD, PhD: Department of Neurosurgery, Hachinohe City Hospital, Hachinohe, Japan
Tsuyoshi Kawamura, MD, PhD: Department of Neurosurgery, Hachinohe City Hospital, Hachinohe, Japan
Kei Takase, MD, PhD: Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Japan

Journal volume & issue: Vol. 16, no. 12
pp. 3721 – 3728

Abstract

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In conventional carotid computed tomographic angiography, the artifacts of the stent vary depending on the structure and characteristics of the alloy type. Cobalt-based alloy stents have been reported to exhibit high artifacts, and accurate evaluation of the internal lumen can be difficult. Recently, ultra-high-resolution computed tomography scanner systems have become available for clinical practice. The primary features of this computed tomography scanner are a 0.25-mm detector row width and a 1024 × 1024 matrix. We report a case-series of carotid artery stenting using a cobalt-based alloy stent scanned by an ultra-high-resolution computed tomography scanner system and model-based iterative reconstruction. We also report that the combination of the ultra-high-resolution computed tomography scanner system with model-based iterative reconstruction would be useful to evaluate vessel patency after placement of a cobalt-based alloy stent.

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

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