title: Role of biplane and biplane echocardiographically guided 3-dimensional echocardiography during dobutamine stress echocardiography.
abstract: Image acquisition time and wall-motion score of conventional 2-dimensional (2D) dobutamine stress echocardiography (DSE) were compared with those of biplane and 3-dimensional (3D) DSE in 50 patients (age 67 +/- 13 years) with regular rhythms during clinically indicated DSE. Commercially available systems were used for the study. We used a conventional transducer for 2D and a matrix-array transducer (x4 or x3-1) for two biplane (60- and 120-degree) images and one 3D full-volume image. Image quality was scored as 1 = good; 2 = adequate; and 3 = inadequate. Segmental wall-motion scores for each method were analyzed in blinded fashion. Acquisition times of biplane (9.3 +/- 2.8 seconds) and biplane-guided 3D (additional 2.6 +/- 1.0 seconds) echocardiography were significantly shorter than those of conventional 2D DSE (60.0 +/- 26.7 seconds) (P < .001). Image quality was adequate or good in 94% for biplane and 96% for 3D echocardiography. Agreement of segmental wall-motion score was present in 87.6% of segments for 2D versus biplane and 85.9% for 2D versus 3D at baseline and in 88.0% for 2D versus biplane and 87.4% for 2D versus 3D at peak stress. Acquisition of biplane or biplane-guided 3D volumetric data during DSE with use of a new matrix-array transducer was feasible and shortened image acquisition time without affecting the diagnostic yield compared with conventional 2D imaging.
authors.affiliation: Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota 55905, USA.
authors.forename: Hyun Suk
authors.initials: HS
authors.lastname: Yang
authors.forename: Patricia A
authors.initials: PA
authors.lastname: Pellikka
authors.forename: Robert B
authors.initials: RB
authors.lastname: McCully
authors.forename: Jae K
authors.initials: JK
authors.lastname: Oh
authors.forename: Joyce A
authors.initials: JA
authors.lastname: Kukuzke
authors.forename: Bijoy K
authors.initials: BK
authors.lastname: Khandheria
authors.forename: Krishnaswamy
authors.initials: K
authors.lastname: Chandrasekaran
mesh_terms: D000368:Aged; D004280:Dobutamine; D015150:Echocardiography, Doppler / Q000379:methods*; D019560:Echocardiography, Three-Dimensional / Q000379:methods*; D005080:Exercise Test / Q000379:methods; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014665:Vasodilator Agents; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging*
chemical_list: D014665:Vasodilator Agents; D004280:Dobutamine