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Figure 1 Scatterplots showing the relationship between thyroid-stimulating hormone (TSH) and end-diastolic volume (EDV), stroke volume (SV), cardiac index (CI), systemic vascular resistance (SVR), and apical greatest systolic lengthening (E1) and apical greatest systolic shortening (E2). Open circles = subclinical hypothyroidism (SHT) patients before thyroid replacement therapy; filled circles = SHT patients after thyroid replacement therapy; open triangles = control group.