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01.02.2020 | Original Article

Prevalence of extracardiac findings in patients undergoing coronary computed tomography and additional low-dose whole-body computed tomography

verfasst von: Morikatsu Yoshida, Daisuke Utsunomiya, Taihei Inoue, Takeshi Nakaura, Naritsugu Sakaino, Kazunori Harada, Daisuke Sueta, Kenichi Tsujita, Yasuyuki Yamashita

Erschienen in: Japanese Journal of Radiology | Ausgabe 2/2020

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Abstract

Purpose

In patients with suspected coronary artery disease (CAD), coexisting extracardiac abnormalities have a major impact on the patient management. This study aimed to evaluate the image quality of whole-body computed tomography (CT) immediately after the coronary computed tomography angiography (CTA) and investigate the incidence of extracardiac findings in patients with suspected CAD.

Materials and methods

We enrolled 450 patients undergoing whole-body CT at 100 kVp and model-based iterative reconstruction immediately after the coronary CTA (Group A) and retrospectively reviewed 144 control patients who underwent conventional contrast-enhanced CT (120 kVp) with filtered back projection (Group B). We compared the signal-to-noise ratio (SNR) of the aorta and liver and radiation dose between the two groups. Then, we evaluated the prevalence of extracardiac findings in Group A.

Results

Compared with Group B, Group A demonstrated significantly higher aorta and liver SNR and lower radiation dose. In Group A, whole-body CT revealed 229 coexisting lesions in 165 patients, including 32 and 106 cases of oncologic and vascular diseases, respectively.

Conclusion

Additional whole-body CT after coronary CTA may provide adequate image quality. Using additional whole-body CT, 36% of patients with suspected CAD had clinically relevant coexisting findings, including malignancy.

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Titel: Prevalence of extracardiac findings in patients undergoing coronary computed tomography and additional low-dose whole-body computed tomography
verfasst von: Morikatsu Yoshida
Daisuke Utsunomiya
Taihei Inoue
Takeshi Nakaura
Naritsugu Sakaino
Kazunori Harada
Daisuke Sueta
Kenichi Tsujita
Yasuyuki Yamashita
Publikationsdatum: 01.02.2020
Verlag: Springer Japan
Erschienen in: Japanese Journal of Radiology / Ausgabe 2/2020
Print ISSN: 1867-1071
Elektronische ISSN: 1867-108X
DOI: https://doi.org/10.1007/s11604-019-00906-3

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Prevalence of extracardiac findings in patients undergoing coronary computed tomography and additional low-dose whole-body computed tomography

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Purpose

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