In the Van Praagh system, a three-part notation consisting of letters separated by commas and encompassed by a set of braces is used to succinctly describe the visceroatrial situs, the orientation of the ventricular loop, and the position and relation of the great vessels.

2010年3月8日 · Three different anatomic configurations may be observed: situs solitus (normal), situs inversus (inverted), or situs ambiguus (ambiguous). In step 2, the left- or rightward orientation of the ventricular loop is evaluated, and the positions of the ventricles are identified on the basis of their internal morphologic features.

2022年8月8日 · The segmental anatomy of the heart is presented here. The segment-by-segment or step-by-step approach to diagnosis greatly simplifies the diagnostic problem posed even by the most complex forms of congenital heart disease.

2015年12月20日 · The segmental approach involves the analysis of the three major cardiac segments: atria, ventricles, and great arteries, along with the two connecting segments: the AV canal and the conotruncus. These segments of the heart can be …

The three segments which Van Praagh described consist of the atria, the ventricle, and the great vessels. These segments may be described by delineating their relative positional relationships. The visceroatrial situs is defined as the relative position of the right and left atria to the sidedness of the abdominal (visceral) organs; the term ...

2016年6月15日 · Segmental notation consists of a three-member set in braces { }. The first member is the viscero atrial situs—solitus, inversus, or ambiguus; the second is the ventricular loop—D or L; and the third is the great artery situs—solitus normal, inversus normal, D, L, or A transposition or malposition.

2016年1月14日 · Basic Cardiac Segments and Steps of Sequential Segmental Analysis. As discussed in Chapter 1, the heart consists of three morphologically and functionally distinct segments: the atria, the ventricles, and the arterial trunks . They are joined together by two connecting units, the atrioventricular junction and the ventriculoarterial junction ...

2020年1月1日 · The sequential segmental approach is essential for better understanding of cardiac anatomy in normal and malformed hearts. It is based on a detailed analysis of the...

2016年3月15日 · The sequential, segmental approach to analyzing CHD patient images was introduced nearly three decades ago and is used worldwide [1–5]. Thus, a thorough understanding of both the nomenclature and anatomy applied in this approach is essential to the proper and error-free interpretation of CHD CTA images [6].

2020年12月19日 · This chapter offers a step-by-step guide for using the sequential segmental analysis system to report key imaging findings that allow accurate diagnosis and appropriate management of congenital heart diseases. Four different CMR cases of visceral heterotaxy with full reports are available at online-only video files.