PHYSICAL PARAMETERS AFFECTING THE VISIBILITY OF SMALL VENTRICULAR SEPTAL-DEFECTS USING 2-DIMENSIONAL ECHOCARDIOGRAPHY

被引：8

作者：

JAFFE, CC

ATKINSON, P

TAYLOR, KJW

机构：

[1] Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, CT

[2] Bristol General Hospital, Bristol, Guinea Street

来源：

INVESTIGATIVE RADIOLOGY | 1979年 / 14卷 / 02期

关键词：

D O I：

10.1097/00004424-197903000-00007

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

We report a study showing that two-dimensional echocardiography is capable of visualizing a ventricular septal defect as small as 3 mm. The physical parameters which determine the visibility of an aperture in the myocardium include the presence of anterior refractile tissue, the amount of ultrasound beam focusing and range over which this occurs, the angle of incidence of the ultrasound beam on the septum, and the number of lines of information per degree of sector sweep. These factors are illustrated by in vitro tests. The influence of operator controllable variables in two-dimensional sector scanning echocardiography is discussed. © J. B. Lippincott Company.

引用

页码：149 / 155

页数：7