The imaging diagnosis of isolated noncompaction of ventricular myocardium in adults
1.Department of Medical Imaging, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325015; 2.Institute of Digitized Medicine, Wenzhou Medical University, Wenzhou, 325035
Abstract：Objective: To summarize the imaging features and investigate its diagnostic value to INVM in adults. Methods: Twenty cases of INVM were enrolled, 15 cases were detected by ECG, 8 cases were confirmed by CMR, and the imaging performances were retrospectively analyzed. Results: Eighteen cases of patients were of left ventricular, 2 cases were of left and right. Findings of ECG of 15 patients were shown as flows: All the patients were of left ventricular. The most impaired locations in sequence were 15 segment (n=15), 16 segment (n=15) and 17 segment (n=13). The INVM respected as prominent and excessive myocardial trabeculations and deep intratrabecular recesses. The Color Doppler flow imaging showed blood flowing into intertrabecular recesses with dim blood in them. Cardiac insufficiency and back-streaming of atrioventricular valve were found in most of patients. Findings of CMR of 18 patients were shown as flows: 6 cases were of left ventricular, 2 cases were of left and right. The most impaired locations in sequence were 12 segment (n=7), 13 segment (n=6), 14 segment (n=6), 15 segment (n=6) and 16 segment (n=6). The INVM mainly manifested as thickened myocardardium consisting of two layers: epicardial compacted thin myocardial and noncompacted thincked subendocardium, and the later expressed as prominent and excessive trabaculations and deep recesses. Enhancement of 28 segments of left ventricle was shown. Conclusion: The imaging of INVM is characteristic. CMR can clearly demonstrate the extent of abnormalities of myocardium as well as myocardial perfusion of INVM, which makes CMR better than ECG.
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