title: Correspondence between left ventricular 17 myocardial segments and coronary arteries.
abstract: OBJECTIVE
  The last guidelines recommend a standardized 17-segment model for tomographic imaging of the left ventricle. The aim of this study is to analyse the correspondence of the 17 left ventricular segments with each coronary artery by myocardial perfusion SPECT studies.
  
  
  RESULTS
  Fifty patients selected for percutaneous revascularization of one coronary artery [24 left anterior descending (LAD), 15 right coronary artery (RCA), and 11 left circumflex (LCX)] were included. The (99m)Tc-labelled compound was injected immediately after the inflation of the balloon during percutaneous coronary angioplasty. At least 90 s of complete occlusion time was required. Maximal contour of regions of hypoperfusion corresponding to each coronary artery occlusion were delineated over the polar map of 17 segments. Nine segments corresponded to only one coronary artery: eight to LAD (basal anterior, basal anteroseptal, mid-anterior, mid-anteroseptal, apical anterior, apical septal, apical lateral, and apex) and one to LCX (basal anterolateral). Basal inferoseptal, mid-inferoseptal, and apical inferior segments could correspond to LAD or RCA. Basal inferior, basal inferolateral, mid-inferior, and mid-inferolateral segments could correspond to RCA or LCX, whereas the mid-anterolateral segment could correspond to LAD or LCX.
  
  
  CONCLUSIONS
  The most specific segments (anterior, anteroseptal, and all apical segments except the infero-apical) correspond to LAD but no segment can be exclusively attributed to the RCA. Inferoseptal segments can be attributed to LAD or RCA, inferior and inferolateral segments to RCA or LCX, and mid-anterolateral segment to LAD or LCX.
authors.affiliation: Departament de Física de la Universitat Autònoma, Barcelona, Spain.
authors.forename: Osvaldo
authors.initials: O
authors.lastname: Pereztol-Valdés
authors.forename: Jaume
authors.initials: J
authors.lastname: Candell-Riera
authors.forename: César
authors.initials: C
authors.lastname: Santana-Boado
authors.forename: Juan
authors.initials: J
authors.lastname: Angel
authors.forename: Santiago
authors.initials: S
authors.lastname: Aguadé-Bruix
authors.forename: Joan
authors.initials: J
authors.lastname: Castell-Conesa
authors.forename: Ernest V
authors.initials: EV
authors.lastname: Garcia
authors.forename: Jordi
authors.initials: J
authors.lastname: Soler-Soler
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D003326:Coronary Circulation; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000628:therapy*; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D013318:Stroke Volume / Q000502:physiology; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods* / Q000592:standards