2-4 Automatic Computation of the Cardiothoracic Ratio
نویسندگان
چکیده
منابع مشابه
Automatic Arteriovenous Ratio Computation: Emulating the Experts
The arteriovenous ratio is an objective way to assess the arteriolar narrowing related to several diseases such as hypertension. It is computed as the ratio between the artery and vein mean widths. However, its calculus is not straightforward since the experts do not use all the retinal vessels. This paper presents an automatic, precise and reproducible methodology for the AVR computation. We a...
متن کاملEbstein’s Anomaly: An Impressive Cardiothoracic Ratio
Cardiothoracic ratio upper to 0.60 is a factor of poor prognostic in patients with Ebstein’s anomaly and the prognostic is worse if is associated with others congenital heart disease. We present 4-months black boy with Ebstein’s anomaly associated with atrial septal defect, pulmonary valve atresia and patent ductus arteriosus wherein the cardiothoracic ratio nearly 1.0. The patient died five ho...
متن کاملCalculation of the Cardiothoracic Ratio from Portable Anteroposterior Chest Radiography
Cardiothoracic ratio (CTR), the ratio of cardiac diameter (CD) to thoracic diameter (TD), is a useful screening method to detect cardiomegaly, but is reliable only on posteroanterior chest radiography (chest PA). We performed this cross-sectional 3-phase study to establish reliable CTR from anteroposterior chest radiography (chest AP). First, CD(Chest PA)/CD(Chest AP) ratios were determined at ...
متن کاملPrenatal measurement of cardiothoracic ratio in evaluation of heart disease.
The cardiothoracic ratio was measured in 410 normal fetuses and in a group of 73 fetuses with functional or structural heart disease. In normal fetuses it was fairly constant throughout pregnancy, but of those with congenital heart disease it was raised in cases of Ebstein's anomaly, tricuspid dysplasia, atrioventricular septal defect, and complete heart block. In some forms of congenital heart...
متن کاملA Higher Cardiothoracic Ratio Is Associated with 2-Year Mortality after Hemodialysis Initiation.
UNLABELLED A high cardiothoracic ratio (CTR) is indicative of a cardiac disorder. However, few reports have revealed an association between the CTR and mortality in patients starting hemodialysis (HD). METHODS Patients with HD initiation (n = 387; mean age, 66.7 ± 12.7 years) were divided into the following three groups according to their CTR at HD initiation: CTR <50%, 50% ≤ CTR < 55%, and C...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1974
ISSN: 1884-9644
DOI: 10.3169/itej1954.28.265