Fig. 3From: Investigation into cardiac sympathetic innervation during the commencement of haemodialysis in patients with chronic kidney diseasePlanar images from 123I-MIBG scintigraphy of a patient during chronic HD. a Early image 15 min after tracer administration; b late image 4 h after tracer administration. Late heart-to-mediastinum ratio (HMR) is the ratio between the counts within a reference point in the upper mediastinum (red square box) and the left ventricle (red contoured region). The HMR of panel a was 3.03 and of panel b 1.80, resulting in a 41% washoutBack to article page