Fully automatic cardiac T2* relaxation time estimation using marker-controlled watershed

摘要: Heart failure due to iron-overload cardiomyopathy is one of the main causes mortality. The reversible if intensive iron chelation treatment done in time. However, diagnosis often delayed because cardiac deposition unpredictable and symptoms are lately detected. widely used method many countries by calculating a parameter called T2* (T2-star) from magnetic resonance (MR) image sequences. In order compute value, region interest (ROI) manually selected an expert which may require considerable time skills. aim this work hence develop fully automatic measurement using marker-controlled watershed for segmenting interventricular septum MR images. Mathematical morphologies also reduce some errors. Moreover, new approach evaluation suggested work. septa images all echo times (TE's) segmented calculate signal intensities (SI's) while classical segments only first TE. Thirty were segmentation performances evaluated precision recall 0.9 0.8 compared with two experts' opinions. It shows that results our proposed technique quite similar values carried out based on automatically ROI's. mean difference between opinions about 1 ms. This demonstrates close calculated experts.