Validity of cardiovascular magnetic resonance in pre- and post-operative evaluation of pulmonary arteries and ventricular functions in pediatric conotruncal anomalies

Abstract Background The aim of this work is to evaluate the validity of magnetic resonance (MR) imaging in assessment of pulmonary arteries and ventricular functions with conotruncal anomalies in the pediatric population. Results Between March 2018 and December 2019, 42 patients ranging in age from 6 months to 18 years and diagnosed with conotruncal anomalies by echocardiographic examination were submitted for cardiac MRI followed by assessment of their morphological (intra- and extra-cardiac anatomy) and functional parameters. The most common conotruncal anomaly was tetralogy of Fallot which represented 45% of the cases. Cardiac magnetic resonance (CMR) compared to echocardiography showed 46% agreement in the assessment of right ventricular volumes and function. There was only 37% agreement between echocardiography and MRI in delineation of MAPCAS. Conclusion CMR provides a powerful tool, giving anatomical and physiological information that echocardiography and catheterization alone cannot provide in conotruncal anomalies.

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Reference ranges (“normal values”) for cardiovascular magnetic resonance (CMR) in adults and children: 2020 update

Journal of Cardiovascular Magnetic Resonance ◽

10.1186/s12968-020-00683-3 ◽

2020 ◽

Vol 22 (1) ◽

Author(s):

Nadine Kawel-Boehm ◽

Scott J. Hetzel ◽

Bharath Ambale-Venkatesh ◽

Gabriella Captur ◽

Christopher J. Francois ◽

...

Keyword(s):

Cardiovascular Magnetic Resonance ◽

Deep Learning ◽

Magnetic Resonance ◽

Normal Values ◽

Relaxation Times ◽

Pulmonary Arteries ◽

Reference Ranges ◽

Adults And Children ◽

And Function ◽

Chamber Size

AbstractCardiovascular magnetic resonance (CMR) enables assessment and quantification of morphological and functional parameters of the heart, including chamber size and function, diameters of the aorta and pulmonary arteries, flow and myocardial relaxation times. Knowledge of reference ranges (“normal values”) for quantitative CMR is crucial to interpretation of results and to distinguish normal from disease. Compared to the previous version of this review published in 2015, we present updated and expanded reference values for morphological and functional CMR parameters of the cardiovascular system based on the peer-reviewed literature and current CMR techniques. Further, databases and references for deep learning methods are included.

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Cardiovascular magnetic resonance normal values for pulmonary arteries and ventricular volumes in paediatric patients with transposition of the great arteries after arterial switch operation

European Heart Journal - Cardiovascular Imaging ◽

10.1093/ehjci/jeaa356.400 ◽

2021 ◽

Vol 22 (Supplement_1) ◽

Author(s):

I Voges ◽

C Boll ◽

A Caliebe ◽

A Uebing ◽

S Krupickova

Keyword(s):

Magnetic Resonance ◽

Ejection Fraction ◽

Normal Values ◽

Arterial Switch Operation ◽

Pulmonary Arteries ◽

Ventricular Volumes ◽

Paediatric Patients ◽

Switch Operation ◽

And Function ◽

Disease Specific

Abstract Funding Acknowledgements Type of funding sources: None. Background The anatomy of the pulmonary arteries (PA) in patients with transposition of the great arteries (TGA) after arterial switch operation (ASO) with Lecompte manoeuvre is different compared to healthy subjects and stenoses of the PA are known to occur. Cardiovascular magnetic resonance (CMR) imaging is an excellent imaging modality to assess PA anatomy in TGA patients. However, disease specific normal values for PA size do not exist. Furthermore, the impact of pulmonary artery size, age and gender on ventricular volumes and function is unknown. Therefore, we sought to establish disease specific normative ranges for PA dimensions as well as biventricular volumes and function. Methods 70 CMR scans of paediatric patients with TGA after ASO with Lecompte manoeuvre (mean age 12.3 ± 3.6 years; range 5-18 years; 57 males) were included. Cine CMR sequences as well as contrast-enhanced magnetic resonance angiography (CE-MRA) data were used to measure pulmonary artery dimensions. Right and left PA were each measured at three locations during its course around the aorta. Ventricular volumes, mass and ejection fraction were measured from a stack of short axis cine images. Results Mean systolic and diastolic diameters of the MPA were 15.0 ± 2.3 mm (10.5 ± 2.7 mm/m²) / 13.2 ± 2.9 mm (9.2 ± 2.9 mm/m²) and mean cross-sectional MPA area was 286.7 ± 81.7 mm². Mean systolic and diastolic diameters for the RPA and LPA at the narrowest point were: RPA 10.5 ± 2.8 mm (7.8 ± 2.4 mm/m²) / 8.1 ± 2.2 mm (6.0 ± 1.9 mm/m²); LPA 8.4 ± 2.8 mm (6.2 ± 2.1 mm/m²) / 7.4 ± 2.3 mm (5.4 ± 1.6 mm/m²). Mean values for biventricular volumes, ejection fraction and mass were as follows: 1) left ventricular (LV) end-diastolic volume (EDV) 89.0 ± 20.3 ml/m² and end-systolic volume (ESV) 35.1 ± 11.7 ml/m², 2) right ventricular (RV) EDV 76.4 ± 15.4 ml/m² and ESV 32.4 ± 9.1 ml/m², 3) LV and RV ejection fraction 61.1 ± 6.5 % / 58.9 ± 6.1 % and 4) LV and RV mass 59.6 ± 15.2 g/m² / 23.3 ± 7.4 g/m². Separate centile charts for boys and girls for PA dimensions as well as biventricular volumes, mass and ejection fraction were created. Conclusion We established disease specific CMR normal values for the PA dimensions as well as for ventricular volumes, mass and ejection fraction in paediatric patients with TGA after ASO. Our data will improve CMR image interpretation and may serve as a reference in future studies.

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Special issue on point of contact between bio-technology and precision engineering. Measurement of cardiac anatomy and function by magnetic resonance imaging.

Journal of the Japan Society for Precision Engineering ◽

10.2493/jjspe.56.270 ◽

1990 ◽

Vol 56 (2) ◽

pp. 270-274

Author(s):

Tsunehiko NISHIMURA

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Cardiac Anatomy ◽

Resonance Imaging ◽

Special Issue ◽

Precision Engineering ◽

Engineering Measurement ◽

And Function

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Value of Magnetic Resonance Imaging in Assessing Patency and Function of Coronary Artery Bypass Grafts

Circulation ◽

10.1161/01.cir.93.4.660 ◽

1996 ◽

Vol 93 (4) ◽

pp. 660-666 ◽

Cited By ~ 81

Author(s):

Michel A. Galjee ◽

Albert C. van Rossum ◽

Teddo Doesburg ◽

Machiel J. van Eenige ◽

Cees A. Visser

Keyword(s):

Magnetic Resonance Imaging ◽

Coronary Artery ◽

Magnetic Resonance ◽

Coronary Artery Bypass ◽

Artery Bypass ◽

Coronary Artery Bypass Grafts ◽

Resonance Imaging ◽

Bypass Grafts ◽

And Function

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Improving the accuracy of pre-operative evaluation of neurovascular conflict in trigeminal neuralgia using magnetic resonance subtraction

Neuroradiology ◽

10.1007/s00234-020-02624-4 ◽

2021 ◽

Author(s):

Zhenhong Liao ◽

Linbo Zou ◽

Wei Peng ◽

Bing Ming ◽

Yong Zhang ◽

...

Keyword(s):

Magnetic Resonance ◽

Trigeminal Neuralgia ◽

Neurovascular Conflict ◽

Operative Evaluation

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Right ventricular morphology and function undergo complex changes after cardiac surgery

European Heart Journal ◽

10.1093/ehjci/ehaa946.0046 ◽

2020 ◽

Vol 41 (Supplement_2) ◽

Author(s):

P Wejner-Mik ◽

J.D Kasprzak ◽

E Szymczyk ◽

K Wdowiak-Okrojek ◽

A Ammer ◽

...

Keyword(s):

Cardiac Surgery ◽

Right Ventricular ◽

Artery Bypass ◽

Public Institution ◽

Transverse Diameter ◽

Funding Source ◽

Longitudinal Function ◽

Echocardiographic Examination ◽

And Function ◽

Rv Function

Abstract Background An impairment of certain echocardiographic parameters of right ventricular (RV) function, such as tricuspid annular peak systolic excursion (TAPSE), is a known phenomenon in patients undergoing cardiac surgery. However, little is known about significance of these alterations with regard to other aspects of RV function. The aim of our study was to clarify this issue using parameters based on 3D echocardiography and speckle tracking technique. Methods The study population comprised 122 patients (92 men, mean age 65±11 years), referred for coronary artery bypass grafting and/or replacement of mitral or aortic valve. Patients undergoing tricuspid annuloplasty and with baseline suboptimal image quality were excluded from the study group. Transthoracic echocardiographic examination was performed on average 2±2 days prior to surgery (TTE1), and 7±4 days after surgery (TTE2), whereas follow-up TTE (TTE3) was performed on average 12±2months after the surgery. Parameters measured during these examinations included both standard and advanced indices of RV size and function (such as TAPSE, systolic velocity of tricuspid annulus (S'), fractional area change (FAC), RV ejection fraction (EF) and RV global longitudinal systolic strain (GLS), as well as a new parameter introduced by our team - RV shortening fraction (RV SF), calculated as the change in mid RV transverse diameter. Results Echocardiographic measurements were completed for TTE1, TTE2 and TTE3 in 95% of patients. We noticed a significant postoperative (TTE2) impairment of parameters of RV longitudinal function (TAPSE, S' and GLS; p<0,0001). However, neither RV size assessed by both 2D and 3D technique changed, nor the global RV function measured with the use of FAC and EF. Additionally during the postoperative period an increase in the value of a RV SF by 12.85% was observed. After 12 months (TTE3) we observed an improvement in the parameters of the longitudinal RV function. Conclusion Cardiac surgery results in an impairment of the longitudinal systolic RV function, with no influence on the global RV function. The preservation of global function results from increased RV SF. After 12 months, an improvement of the longitudinal function can be observed. Funding Acknowledgement Type of funding source: Public Institution(s). Main funding source(s): Grant Polish Cardiac Society

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