Fig. 1From: Tissue Doppler Imaging and strain rate of the left atrial lateral wall: age related variations and comparison with parameters of diastolic functionMethodology used for the evaluation of LA lateral wall by TDI and SRI. A) Subjective division of the LA lateral wall in three segments; B) TDI on line by spectral pulse at basal segment of LA lateral wall. Three waves are identified: S’la (evaluates reservoir function), E’la (evaluates conduit function), A’la (evaluates pump function). C) LA SRI by speckle tracking with the analysis of the basal and mid segments. Three waves are identified: SRS (evaluates reservoir function); SRE (evaluates conduit function) and SRA (evaluates pump function). For more information, refer to the text. LA: left atrial, TDI: Tissue Doppler Image, SRI: Strain Rate Image, la: left atrialBack to article page