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Iranian Journal of Nuclear Medicine، جلد ۲۶، شماره ۱، صفحات ۳۵-۴۶
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عنوان انگلیسی Is correction for metallic artefacts mandatory in cardiac SPECT/CT imaging in the presence of pacemaker and implantable cardioverter defibrillator leads?
چکیده انگلیسی مقاله Introduction: Metallic artifacts due to pacemaker/ implantable cardioverter defibrillator (ICD) leads in CT images can produce artifactual uptake in cardiac SPECT/CT images. The aim of this study was to determine the influence of the metallic artifacts due to pacemaker and ICD leads on myocardial SPECT/CT imaging. Methods: The study included 9 patients who underwent myocardial perfusion imaging (MPI). A cardiac phantom with an inserted solid defect was used. The SPECT images were corrected for attenuation using both artifactual CT and CT corrected using metal artifact reduction (MAR). VOI-based analysis was performed in artifactual regions. Results:In phantom studies, mean-of-relative-difference in white-region, between artifact-free attenuation-map without/with MAR were changed from 9.2 and 2.1 to 3.7 and 1.2 for ICD and pacemaker lead, respectively. However, these values for typical patient were 9.7±7.0 and 3.8±2.4 for ICD and pacemaker leads respectively, in white-region. MAR effectively reduces the artifacts in white-regions while this reduction is not significant in black-regions. Conclusion: Following application of MAR, visual and quantification analyses revealed that while quality of CT images were significantly improved, the improvements in the SPECT/CT images were not as pronounced or significant. Therefore cardiac SPECT images corrected for attenuation using CT in the presence of metallic-leads can be interpreted without correction for metal artefacts.
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نویسندگان مقاله زهرا اعتمادی |
nuclear medicine and molecular imaging research center, namazi teaching hospital, shiraz university of medical sciences, shiraz, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

پردیس غفاریان |
chronic respiratory diseases research center, national research institute of tuberculosis and lung diseases, shahid beheshti university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

احمد بیطرفان رجبی | bitarafan rajabi
cardiovascular interventional research center, department of nuclear medicine, rajaei cardiovascular, medical, and research center, iran university of medical sciences,tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (Iran university of medical sciences)

هادی ملک |
cardiovascular interventional research center, department of nuclear medicine, rajaei cardiovascular, medical, and research center, iran university of medical sciences,tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (Iran university of medical sciences)

آرمان rahmim |
department of radiology, johns hopkins university, baltimore, maryland, usa

محمدرضا ay | mohammad reza
research center for molecular and cellular imaging, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

نشانی اینترنتی http://irjnm.tums.ac.ir/article_29497_737b738268be0b0c81fd43ac376db304.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/57/article-57-562793.pdf
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زبان مقاله منتشر شده en
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