Morikatsu Yoshida1, Daisuke Utsunomiya2, Taihei Inoue3, Takeshi Nakaura3, Naritsugu Sakaino4, Kazunori Harada5, Daisuke Sueta6, Kenichi Tsujita6, Yasuyuki Yamashita7. 1. Department of Radiology, Amakusa Medical Center, Jikiba, Kameba, Amakusa city, Kumamoto, 863-0046, Japan. y_morikatsu@hotmail.com. 2. Department of Radiology, Yokohama City University School of Medicine, Yokohama, Japan. 3. Department of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan. 4. Department of Cardiovascular Medicine, Amakusa Medical Center, Kumamoto, Japan. 5. Department of Surgery, Amakusa Medical Center, Kumamoto, Japan. 6. Department of Cardiovascular Medicine, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan. 7. Tamana Central Hospital, Tamana, Japan.
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.
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.
Authors: Husam Abdel-Qadir; Peter C Austin; Douglas S Lee; Eitan Amir; Jack V Tu; Paaladinesh Thavendiranathan; Kinwah Fung; Geoffrey M Anderson Journal: JAMA Cardiol Date: 2017-01-01 Impact factor: 14.676
Authors: Christian Sohns; Samuel Sossalla; Dirk Vollmann; Lars Luethje; Joachim Seegers; Jan D Schmitto; Markus Zabel; Silvia Obenauer Journal: Int J Cardiovasc Imaging Date: 2010-06-13 Impact factor: 2.357