title: Useful ectopics.
authors.forename: C J
authors.initials: CJ
authors.lastname: Stack
authors.forename: P J
authors.initials: PJ
authors.lastname: Westhead
authors.forename: P C
authors.initials: PC
authors.lastname: Fabb
authors.forename: H G
authors.initials: HG
authors.lastname: Wakeling
mesh_terms: D000465:Algorithms; D017548:Echocardiography, Transesophageal / Q000379:methods*; D005440:Fluid Therapy / Q000379:methods*; D006801:Humans; D019990:Perioperative Care / Q000379:methods*; D012815:Signal Processing, Computer-Assisted