CT imaging before transcatheter aortic valve implantation (TAVI) using variable helical pitch scanning and its diagnostic performance for coronary artery disease

Shunsuke Matsumoto, Yoshitake Yamada, Masahiro Hashimoto, Teppei Okamura, Minoru Yamada, Fumiaki Yashima, Kentaro Hayashida, Keiichi Fukuda, Masahiro Jinzaki

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Objectives: To evaluate the effectiveness of CT before TAVI using variable helical pitch (VHP) scanning and its diagnostic performance for coronary artery disease (CAD). Methods: Sixty patients (84.4 ± 4.6 years) scheduled for TAVI underwent CT using VHP scanning with the contrast material (CM) volume calculated as scanning time × weight [kg] × 0.06 mL. Retrospective electrocardiography (ECG)-gated scanning was utilized to examine the thorax, and non-ECG-gated scanning of the abdomen immediately followed. We analyzed CT attenuation values of the coronary arteries, aorta, iliac and femoral arteries. The coronary CT angiography images were evaluated for the presence of stenosis (≥50 %); invasive coronary angiography served as a reference standard. Results: The average attenuations of all of the arteries were greater than 400 HU. We could evaluate the peripheral access vessels and dimensions of the ascending aorta, aortic root, and aortic annulus in all patients. The average volume of CM was 38.7 ± 8.5 mL. On per-patient and vessel analysis, CT showed 91.7 % and 89.5 % sensitivity, and 91.3 % and 97.4 % negative predictive value (NPV). Conclusions: CT using VHP scanning with an average CM volume of 38.7 mL is useful before TAVI and had a high sensitivity and NPV in excluding obstructive CAD. Key Points: • TAVI-planning CT using variable helical pitch (VHP) scanning is useful.• The average volume of contrast material was 38.7 ± 8.5 mL.• The average attenuations of all the arteries were >400 HU.• This CT had a high sensitivity and NPV for excluding obstructive CAD.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalEuropean Radiology
DOIs
Publication statusAccepted/In press - 2016 Aug 25

Fingerprint

Contrast Media
Coronary Artery Disease
Coronary Angiography
Aorta
Arteries
Iliac Artery
Femoral Artery
Abdomen
Coronary Vessels
Electrocardiography
Pathologic Constriction
Thorax
Weights and Measures
Transcatheter Aortic Valve Replacement

Keywords

  • Contrast media
  • Coronary artery disease
  • Multidetector computed tomography
  • Sensitivity and specificity
  • Transcatheter aortic valve replacement

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

CT imaging before transcatheter aortic valve implantation (TAVI) using variable helical pitch scanning and its diagnostic performance for coronary artery disease. / Matsumoto, Shunsuke; Yamada, Yoshitake; Hashimoto, Masahiro; Okamura, Teppei; Yamada, Minoru; Yashima, Fumiaki; Hayashida, Kentaro; Fukuda, Keiichi; Jinzaki, Masahiro.

In: European Radiology, 25.08.2016, p. 1-8.

Research output: Contribution to journalArticle

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title = "CT imaging before transcatheter aortic valve implantation (TAVI) using variable helical pitch scanning and its diagnostic performance for coronary artery disease",
abstract = "Objectives: To evaluate the effectiveness of CT before TAVI using variable helical pitch (VHP) scanning and its diagnostic performance for coronary artery disease (CAD). Methods: Sixty patients (84.4 ± 4.6 years) scheduled for TAVI underwent CT using VHP scanning with the contrast material (CM) volume calculated as scanning time × weight [kg] × 0.06 mL. Retrospective electrocardiography (ECG)-gated scanning was utilized to examine the thorax, and non-ECG-gated scanning of the abdomen immediately followed. We analyzed CT attenuation values of the coronary arteries, aorta, iliac and femoral arteries. The coronary CT angiography images were evaluated for the presence of stenosis (≥50 {\%}); invasive coronary angiography served as a reference standard. Results: The average attenuations of all of the arteries were greater than 400 HU. We could evaluate the peripheral access vessels and dimensions of the ascending aorta, aortic root, and aortic annulus in all patients. The average volume of CM was 38.7 ± 8.5 mL. On per-patient and vessel analysis, CT showed 91.7 {\%} and 89.5 {\%} sensitivity, and 91.3 {\%} and 97.4 {\%} negative predictive value (NPV). Conclusions: CT using VHP scanning with an average CM volume of 38.7 mL is useful before TAVI and had a high sensitivity and NPV in excluding obstructive CAD. Key Points: • TAVI-planning CT using variable helical pitch (VHP) scanning is useful.• The average volume of contrast material was 38.7 ± 8.5 mL.• The average attenuations of all the arteries were >400 HU.• This CT had a high sensitivity and NPV for excluding obstructive CAD.",
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AU - Matsumoto, Shunsuke

AU - Yamada, Yoshitake

AU - Hashimoto, Masahiro

AU - Okamura, Teppei

AU - Yamada, Minoru

AU - Yashima, Fumiaki

AU - Hayashida, Kentaro

AU - Fukuda, Keiichi

AU - Jinzaki, Masahiro

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N2 - Objectives: To evaluate the effectiveness of CT before TAVI using variable helical pitch (VHP) scanning and its diagnostic performance for coronary artery disease (CAD). Methods: Sixty patients (84.4 ± 4.6 years) scheduled for TAVI underwent CT using VHP scanning with the contrast material (CM) volume calculated as scanning time × weight [kg] × 0.06 mL. Retrospective electrocardiography (ECG)-gated scanning was utilized to examine the thorax, and non-ECG-gated scanning of the abdomen immediately followed. We analyzed CT attenuation values of the coronary arteries, aorta, iliac and femoral arteries. The coronary CT angiography images were evaluated for the presence of stenosis (≥50 %); invasive coronary angiography served as a reference standard. Results: The average attenuations of all of the arteries were greater than 400 HU. We could evaluate the peripheral access vessels and dimensions of the ascending aorta, aortic root, and aortic annulus in all patients. The average volume of CM was 38.7 ± 8.5 mL. On per-patient and vessel analysis, CT showed 91.7 % and 89.5 % sensitivity, and 91.3 % and 97.4 % negative predictive value (NPV). Conclusions: CT using VHP scanning with an average CM volume of 38.7 mL is useful before TAVI and had a high sensitivity and NPV in excluding obstructive CAD. Key Points: • TAVI-planning CT using variable helical pitch (VHP) scanning is useful.• The average volume of contrast material was 38.7 ± 8.5 mL.• The average attenuations of all the arteries were >400 HU.• This CT had a high sensitivity and NPV for excluding obstructive CAD.

AB - Objectives: To evaluate the effectiveness of CT before TAVI using variable helical pitch (VHP) scanning and its diagnostic performance for coronary artery disease (CAD). Methods: Sixty patients (84.4 ± 4.6 years) scheduled for TAVI underwent CT using VHP scanning with the contrast material (CM) volume calculated as scanning time × weight [kg] × 0.06 mL. Retrospective electrocardiography (ECG)-gated scanning was utilized to examine the thorax, and non-ECG-gated scanning of the abdomen immediately followed. We analyzed CT attenuation values of the coronary arteries, aorta, iliac and femoral arteries. The coronary CT angiography images were evaluated for the presence of stenosis (≥50 %); invasive coronary angiography served as a reference standard. Results: The average attenuations of all of the arteries were greater than 400 HU. We could evaluate the peripheral access vessels and dimensions of the ascending aorta, aortic root, and aortic annulus in all patients. The average volume of CM was 38.7 ± 8.5 mL. On per-patient and vessel analysis, CT showed 91.7 % and 89.5 % sensitivity, and 91.3 % and 97.4 % negative predictive value (NPV). Conclusions: CT using VHP scanning with an average CM volume of 38.7 mL is useful before TAVI and had a high sensitivity and NPV in excluding obstructive CAD. Key Points: • TAVI-planning CT using variable helical pitch (VHP) scanning is useful.• The average volume of contrast material was 38.7 ± 8.5 mL.• The average attenuations of all the arteries were >400 HU.• This CT had a high sensitivity and NPV for excluding obstructive CAD.

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KW - Coronary artery disease

KW - Multidetector computed tomography

KW - Sensitivity and specificity

KW - Transcatheter aortic valve replacement

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