preferred_name: isotope cardiac ventriculography at rest, feet down, LV diastolic filling rate
preferred_name_lc: isotope cardiac ventriculography at rest, feet down, lv diastolic filling rate
label: isotope cardiac ventriculography at rest, feet down, LV diastolic filling rate
label_lc: isotope cardiac ventriculography at rest, feet down, lv diastolic filling rate