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Evaluation of dual energy computed tomography iodine mapping within the myocardial blood pool for detection of acute myocardial infarction: correlation with histopathological findings in a porcine model
- Source :
- The British Journal of Radiology. :20170569
- Publication Year :
- 2018
- Publisher :
- British Institute of Radiology, 2018.
-
Abstract
- OBJECTIVE: We assessed the diagnostic value of “one-step” dual energy CT (DECT) in combination with coronary CT angiography and iodine mapping within the myocardial blood pool in detecting acute myocardial infarction (AMI). METHODS: Five minipigs were subjected to transcatheter embolization of coronary artery with a gelatin sponge to induce AMI. Arterial-phase myocardial DECT imaging was carried out 1 h before and 24 h after embolism of the coronary. Color-coded iodine maps were used to evaluate myocardial blood pool deficits in the 17-segment model. Myocardial DECT imaging 24 h after MI induction was used for final comparison with post-mortem histology. RESULTS: We found a sensitivity of 95.55% and a specificity of 95%, respectively, for AMI detection by DECT-based iodine mapping within the myocardial blood pool. The dose–length product values were 219.4 ± 60.9 mGy.cm (172–321 mGy.cm) and the effective radiation dose was 5.7 ± 1.5 mSv (4.4–8.3 mSv). CONCLUSION: This experimental study demonstrated that DECT-based iodine mapping shows a high value for the detection of myocardial perfusion defects in the first-pass myocardial perfusion. Hybrid heart images obtained by coronary CT angiography and DECT-based iodine mapping may yield valuable data and help clinicians accurately identify cases requiring further treatment after AMI. ADVANCES IN KNOWLEDGE: This study demonstrated that DECT-based iodine mapping is a promising new technique for the detection of myocardial perfusion defects in the first-pass myocardial perfusion.
- Subjects :
- Computed Tomography Angiography
Swine
Iohexol
Cardiac-Gated Imaging Techniques
Myocardial Infarction
Contrast Media
chemistry.chemical_element
030204 cardiovascular system & hematology
Coronary Angiography
Iodine
030218 nuclear medicine & medical imaging
03 medical and health sciences
0302 clinical medicine
medicine
Animals
Radiology, Nuclear Medicine and imaging
Myocardial infarction
Computed tomography angiography
Full Paper
Staining and Labeling
medicine.diagnostic_test
business.industry
Dual-Energy Computed Tomography
General Medicine
medicine.disease
Disease Models, Animal
medicine.anatomical_structure
Embolism
chemistry
Tomography
Tomography, X-Ray Computed
Nuclear medicine
business
medicine.drug
Artery
Subjects
Details
- ISSN :
- 1748880X and 00071285
- Database :
- OpenAIRE
- Journal :
- The British Journal of Radiology
- Accession number :
- edsair.doi.dedup.....a3740d27959db7fca0a059c620ce4ebb