Diagnostic accuracy of late iodine enhancement on cardiac computed tomography with a denoise filter for the evaluation of myocardial infarction
| Autor: | Susumu Shigemi, Hideyuki Saeki, Toshihide Itoh, Takeshi Matsuda, Kouki Watanabe, Takuya Matsuda, Teruhito Kido, Shoji Aono, Teruhito Mochizuki, Masaya Yamamoto, Tomoyuki Kido |
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| Rok vydání: | 2015 |
| Předmět: |
Gadolinium DTPA
Male medicine.medical_specialty Image quality medicine.medical_treatment Myocardial Infarction Contrast Media Predictive Value of Tests medicine Humans Radiology Nuclear Medicine and imaging Myocardial infarction Prospective Studies Cardiac imaging Aged Aged 80 and over Tissue Survival medicine.diagnostic_test business.industry Myocardium Percutaneous coronary intervention Reproducibility of Results Magnetic resonance imaging Filter (signal processing) Equipment Design Middle Aged medicine.disease Magnetic Resonance Imaging Iopamidol Contrast medium Angiography Radiographic Image Interpretation Computer-Assisted Female Radiology Cardiology and Cardiovascular Medicine Nuclear medicine business Tomography X-Ray Computed |
| Zdroj: | The international journal of cardiovascular imaging. 31 |
| ISSN: | 1875-8312 |
| Popis: | We evaluated the image quality and diagnostic performance of late iodine enhancement (LIE) in dual-source computed tomography (DSCT) with low kilo-voltage peak (kVp) images and a denoise filter for the detection of acute myocardial infarction (AMI) in comparison with late gadolinium enhancement (LGE) magnetic resonance imaging (MRI). The Hospital Ethics Committee approved the study protocol. Before discharge, 19 patients who received percutaneous coronary intervention after AMI underwent DSCT and 1.5 T MRI. Immediately after coronary computed tomography (CT) angiography, contrast medium was administered at a slow injection rate. LIE-CT scans were acquired via dual-energy CT and reconstructed as 100-, 140-kVp, and mixed images. An iterative three-dimensional edge-preserved smoothing filter was applied to the 100-kVp images to obtain denoised 100-kVp images. The mixed, 140-kVp, 100-kVp, and denoised 100-kVp images were assessed using contrast-to-noise ratio (CNR), and their diagnostic performance in comparison with MRI and infarcted volumes were evaluated. Three hundred four segments of 19 patients were evaluated. Fifty-three segments showed LGE in MRI. The median CNR of the mixed, 140-, 100-kVp and denoised 100-kVp images was 3.49, 1.21, 3.57, and 6.08, respectively. The median CNR was significantly higher in the denoised 100-kVp images than in the other three images (P |
| Databáze: | OpenAIRE |
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