Green C E, Elliott L P, Rogers W J, Mantle J A, Papapietro S, Hood W P
Radiology. 1982 Mar;142(3):637-41. doi: 10.1148/radiology.142.3.7063678.
The craniocaudal right anterior oblique view (RAO) of the left coronary artery was employed for 100 angiograms. Visualization of the proximal and left distal circumflex, first and second marginal, and proximal left anterior descending artery (LAD) and its branches was compared with that on the non-angled RAO projection. Diagnostic accuracy was increased with the caudal RAO view in 88% of proximal circumflex segments, 69% of distal circumflex segments, 52% of first marginal segments, 33% of second marginal segments, and 33% of proximal LAD systems. Of 68 lesions identified, 15 (22%) were seen only on the caudal RAO view. The authors feel that this projection is a valuable and necessary addition to routine views of the left coronary artery, and that optimum evaluation is achieved by routine use of a combination of caudal, non-angled, and cranial RAO views.
对100例血管造影采用左冠状动脉的头足位右前斜位（RAO）。将近端和左回旋支远端、第一和第二钝缘支以及近端左前降支（LAD）及其分支的显影情况与非成角RAO投照时的情况进行比较。在88%的近端回旋支节段、69%的远端回旋支节段、52%的第一钝缘支节段、33%的第二钝缘支节段以及33%的近端LAD系统中，尾侧RAO位可提高诊断准确性。在68处病变中，15处（22%）仅在尾侧RAO位可见。作者认为，该投照是左冠状动脉常规投照的一项有价值且必要的补充，通过常规联合使用尾侧、非成角和头侧RAO位可实现最佳评估。
