CV3 Cardiothoracic ratio in newborn [radiography]

AbstractWe examined the feasibility of explainable computer-aided detection of cardiomegaly in routine clinical practice using segmentation-based methods. Overall, 793 retrospectively acquired posterior–anterior (PA) chest X-ray images (CXRs) of 793 patients were used to train deep learning (DL) models for lung and heart segmentation. The training dataset included PA CXRs from two public datasets and in-house PA CXRs. Two fully automated segmentation-based methods using state-of-the-art DL models for lung and heart segmentation were developed. The diagnostic performance was assessed and the reliability of the automatic cardiothoracic ratio (CTR) calculation was determined using the mean absolute error and paired t-test. The effects of thoracic pathological conditions on performance were assessed using subgroup analysis. One thousand PA CXRs of 1000 patients (480 men, 520 women; mean age 63 ± 23 years) were included. The CTR values derived from the DL models and diagnostic performance exhibited excellent agreement with reference standards for the whole test dataset. Performance of segmentation-based methods differed based on thoracic conditions. When tested using CXRs with lesions obscuring heart borders, the performance was lower than that for other thoracic pathological findings. Thus, segmentation-based methods using DL could detect cardiomegaly; however, the feasibility of computer-aided detection of cardiomegaly without human intervention was limited.

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Utility of Recipient Cardiothoracic Ratio in Predicting Delayed Chest Closure after Heart Transplantation

The Journal of Heart and Lung Transplantation ◽

10.1016/j.healun.2021.01.743 ◽

2021 ◽

Vol 40 (4) ◽

pp. S260-S261

Author(s):

A. Sukhavasi ◽

M.P. Weber ◽

E.J. Maynes ◽

Y. Brailovsky ◽

M.K. Shah ◽

...

Keyword(s):

Heart Transplantation ◽

Cardiothoracic Ratio

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Cardiothoracic ratio may be misleading in the assessment of right- and left-ventricular size in patients with repaired tetralogy of Fallot

Clinical Radiology ◽

10.1016/j.crad.2014.03.009 ◽

2014 ◽

Vol 69 (7) ◽

pp. e299-e306 ◽

Cited By ~ 2

Author(s):

M. Śpiewak ◽

Ł.A. Małek ◽

E.K. Biernacka ◽

M. Kowalski ◽

I. Michałowska ◽

...

Keyword(s):

Tetralogy Of Fallot ◽

Left Ventricular ◽

Ventricular Size ◽

Cardiothoracic Ratio ◽

Left Ventricular Size ◽

Repaired Tetralogy Of Fallot

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Cardiothoracic Ratio Calculation and Cardiomegaly Detection Based on Object Detection

2021 29th Signal Processing and Communications Applications Conference (SIU) ◽

10.1109/siu53274.2021.9477946 ◽

2021 ◽

Author(s):

Zelal Cicek Tacyildiz ◽

Ersin Kilic ◽

Abdulkadir Budak ◽

Hakan Karatas

Keyword(s):

Object Detection ◽

Cardiothoracic Ratio ◽

Ratio Calculation

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Fetal sonographic cardiothoracic ratio at midpregnancy as a predictor of Hb Bart disease.

Journal of Ultrasound in Medicine ◽

10.7863/jum.1999.18.12.807 ◽

1999 ◽

Vol 18 (12) ◽

pp. 807-811 ◽

Cited By ~ 33

Author(s):

T Tongsong ◽

C Wanapirak ◽

S Sirichotiyakul ◽

W Piyamongkol ◽

P Chanprapaph

Keyword(s):

Cardiothoracic Ratio

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Assessment of the vertebral heart scale and cardiothoracic ratio to standardize the heart size of collared peccaries (Tayassu tajacu Linnaeus, 1758) restrained with ketamine and midazolam

Pesquisa Veterinária Brasileira ◽

10.1590/1678-5150-pvb-5434 ◽

2018 ◽

Vol 38 (8) ◽

pp. 1705-1711

Author(s):

Osmar F. Silva-Filho ◽

Gerson T. Pessoa ◽

Francisco C.A. Sousa ◽

Renan P.S. Rodrigues ◽

Laecio S. Moura ◽

...

Keyword(s):

Gender Differences ◽

Digital Radiography ◽

Wild Species ◽

Diagnostic Tools ◽

Mean Values ◽

Cardiothoracic Ratio ◽

Heart Size ◽

Cardiac Silhouette ◽

Collared Peccary ◽

Tayassu Tajacu

ABSTRACT: Wild species, especially those threatened with extinction, are increasingly being investigated to obtain information that can be useful for their preservation. The objective of the present study was to standardize the vertebral heart scale (VHS) and cardiothoracic ratio (CTR) of the collared peccary (Tayassu tajacu Linnaeus, 1758) sedated with ketamine and midazolam. Fourteen clinically healthy collared peccaries were examined in the two-year age group weighing 15-22kg. The animals were submitted to digital radiography of the thorax in lateral and dorsal ventral projections to calculate the VHS and CTR. The VHS mean values for males and females was 8.88±0.51v for right recumbency and 8.84±0.39v for left decubitus, and there were no significant between-gender differences regarding recumbency (p>0.05). The CTR showed mean values of 0.50±0.05 (males) and 0.45±0.04 (females), but the gender-differences were not significant (p>0.05). A positive correlation was shown between VHS and CTR (r=0.98, right decubitus; r=0.96, left decubitus). Establishing reference values for heart measurements in collared peccaries using digital radiography of the thorax permitted standardization of the VHS and CTR values for this wild species. In the studied wild animal model, the VHS and CTR heart assessment indexes were shown to be essential diagnostic tools for investigations of alterations in the size of the cardiac silhouette.

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NT-proBNP and Echocardiographic Parameters in Patients with Acute Heart Failure

Acta Medica (Hradec Kralove Czech Republic) ◽

10.14712/18059694.2017.59 ◽

2007 ◽

Vol 50 (1) ◽

pp. 51-56 ◽

Cited By ~ 5

Author(s):

Radek Pudil ◽

Miloš Tichý ◽

Rudolf Praus ◽

Václav Bláha ◽

Jan Vojáček

Keyword(s):

Heart Failure ◽

Ejection Fraction ◽

Acute Heart Failure ◽

Vena Cava ◽

Left Ventricular ◽

Clinical Severity ◽

Left Ventricular Ejection ◽

Ventricular Ejection Fraction ◽

X Ray ◽

Cardiothoracic Ratio

Aim. The aim of this study was to analyse the relation between clinical, haemodynamic and X-ray parameters and plasma NT-proBNP level in pts with symptoms of left ventricular dysfunction. Methods. The plasma NT-proBNP levels, chest x-ray, transthoracic 2-d and Doppler echocardiography were performed at the time of admission in a group of 96 consecutive patients (mean age 68 ± 11 years) with symptoms of acute heart failure. NT-proBNP levels were assessed with the use of commercial tests (Roche Diagnostics). Results. All patients have significant increase in NT-proBNP (8 000 ± 9 000 pg/mL vs. controls 90 ± 80 pg/mL, p < 0.001). The group of all patients has shown a significant increase in cardiothoracic ratio (CTR, 0.6 ± 0.1, vs. 0.4 ± 0.1, p <0.001), left atrium diameter (LAD, 4.4 ± 0.8 cm, vs.3.5 ± 0.4 cm, p <0.01). Left ventricular ejection fraction (LVEF) was decreased (37 ± 15%, vs. 64 ± 5%, p <0.001). In patients with acute heart failure, NT-proBNP significantly correlated with end-systolic and end-diastolic left ventricle diameters, ejection fraction, vena cava inferior diameter and plasma creatinine levels. Conclusion. Increased plasma NT-proBNP level is influenced by the clinical severity of acute heart failure and correlates with LVEF and IVCD. NT-proBNP can serve as a marker for the clinical severity of the disease.

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Neutralization Assessments Reveal High Cardiothoracic Ratio and Old Age as Independent Predictors of Low Neutralizing Antibody Titers in Hemodialysis Patients Receiving a Single Dose of COVID-19 Vaccine

Journal of Personalized Medicine ◽

10.3390/jpm12010068 ◽

2022 ◽

Vol 12 (1) ◽

pp. 68

Author(s):

Chun-Yu Chen ◽

Kuan-Ting Liu ◽

Shin-Ru Shih ◽

Jung-Jr Ye ◽

Yih-Ting Chen ◽

...

Keyword(s):

Single Dose ◽

Old Age ◽

Neutralizing Antibodies ◽

Additive Model ◽

Humoral Response ◽

Neutralizing Antibody ◽

Enzyme Linked Immunosorbent Assay ◽

Healthy Controls ◽

Neutralization Titer ◽

Cardiothoracic Ratio

Background: Data are lacking regarding predictors of quantification of neutralizing antibodies (nAbs) based on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) 50% neutralization titer (NT50) after a single dose of COVID-19 vaccine in hemodialysis (HD) patients. Methods: This prospective single-center study enrolled 200 HD patients and 82 healthy subjects to estimate antibodies against the SARS-CoV-2 viral spike protein 1 and receptor-binding domain after a first dose of a COVID-19 vaccine (ChAdOx1 or mRNA-1273), measured by enzyme-linked immunosorbent assay and applied spline-based generalized additive model regression analysis to predict NT50 converted to international units. Results: After the first dose of ChAdOx1, multiple linear regression showed that age (p = 0.011) and cardiothoracic ratio (p = 0.002) were negatively associated with NT50. Older age (OR = 0.958, p = 0.052) and higher cardiothoracic ratio (OR < 0.001, p = 0.037) could predict negative humoral response (NT50 < 35.13 IU/mL). NT50 was lower in HD patients compared with healthy controls receiving ChAdOx1 (10.68 vs. 43.01 IU/m, p < 0.001) or mRNA-1273 (36.39 vs. 262.2 IU/mL, p < 0.001). ChAdOx1 elicited lower GMTs than mRNA-1273 in the HD cohort (10.68 vs. 36.39 IU/mL, p < 0.001) and in healthy controls (43.01 vs. 262.22 IU/mL, p < 0.001). Conclusion: High cardiothoracic ratio and old age could independently predict a decline in nAb titers in an HD cohort vaccinated with a single dose of ChAdOx1.

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