Fig 2. a. Cardiac anatomic specimen from a modified
left lateral view in which an oblique vertical transection passing
through the SVC posteriorly and the RV anteriorly has been performed to
show the lateral half of the SVC-RA junction. In this image, the CT
becomes the AR (white dotted line) at the anterosuperior SVC-RA
junction. b. Cardiac anatomic specimen from an anteroinferior
modified view in which the anterior RA and RAA have been removed to show
the CT becoming the AR (white dotted line). In this image, the tip of an
ICE tilted posteriorly is represented as a white circle from which clock
and counterclockwise rotation is performed to obtain a long view of the
SVC-RA junction to visualize the lateral, medial, and septal aspects of
the AR (represented as white transparent beams). c. Cardiac
anatomic specimen from a right lateral modified view in which part of
the SVC and the lateral half of the posterior RA wall have been removed
to show the septal extension of the AR (dotted white line) approaching
the interatrial septum next to the Ao. d . Long axis ICE view of
the SVC-RA junction showing the AR at its lateral portion. e .
Long axis ICE view of the SVC-RA junction showing the AR at its septal
portion (black dotted line) in which a small portion of the Ao is
viewed. RA: right atrium, LA: left atrium, AR: arcuate ridge, SVC:
Superior Vena Cava, IVC: Inferior Vena Cava, RAA: right atrial
appendage, RSPV and RIPV: right superior and inferior pulmonary veins,
FO: Foramen ovale, TV: Tricuspid valve, RV: right ventricle, AO: aorta,
CT: crista terminalis. Reproduced from: Shivkumar K, Editor Shumpei Mori
Kalyanam Shivkumar S. Anatomical basis of cardiac interventions, volume
1 cardiac anatomy. Vol. 1. 2022. 87–96 p.; McAlpine WA. Heart and
Coronary Arteries. Vol. 1, Heart, and Coronary Arteries. Springer Berlin
Heidelberg; 1975. 97–99 p.