@article{Petersen2017,
title = {Reference ranges for cardiac structure and function using cardiovascular magnetic resonance (CMR) in Caucasians from the UK Biobank population cohort},
author = {SE Petersen, N Aung, MM Sanghvi, F Zemrak, K Fung, JM Paiva, JM Francis, MY Khanji, E Lukaschuk, AM Lee, V Carapella, YJ Kim, P Leeson, SK Piechnik, S Neubauer},
url = {https://www.ncbi.nlm.nih.gov/pubmed/28178995},
year = {2017},
date = {2017-02-03},
journal = {Journal of Cardiovascular Magnetic Resonance },
abstract = {BACKGROUND:

Cardiovascular magnetic resonance (CMR) is the gold standard method for the assessment of cardiac structure and function. Reference ranges permit differentiation between normal and pathological states. To date, this study is the largest to provide CMR specific reference ranges for left ventricular, right ventricular, left atrial and right atrial structure and function derived from truly healthy Caucasian adults aged 45-74.
METHODS:

Five thousand sixty-five UK Biobank participants underwent CMR using steady-state free precession imaging at 1.5 Tesla. Manual analysis was performed for all four cardiac chambers. Participants with non-Caucasian ethnicity, known cardiovascular disease and other conditions known to affect cardiac chamber size and function were excluded. Remaining participants formed the healthy reference cohort; reference ranges were calculated and were stratified by gender and age (45-54, 55-64, 65-74).
RESULTS:

After applying exclusion criteria, 804 (16.2%) participants were available for analysis. Left ventricular (LV) volumes were larger in males compared to females for absolute and indexed values. With advancing age, LV volumes were mostly smaller in both sexes. LV ejection fraction was significantly greater in females compared to males (mean ± standard deviation [SD] of 61 ± 5% vs 58 ± 5%) and remained static with age for both genders. In older age groups, LV mass was lower in men, but remained virtually unchanged in women. LV mass was significantly higher in males compared to females (mean ± SD of 53 ± 9 g/m2 vs 42 ± 7 g/m2). Right ventricular (RV) volumes were significantly larger in males compared to females for absolute and indexed values and were smaller with advancing age. RV ejection fraction was higher with increasing age in females only. Left atrial (LA) maximal volume and stroke volume were significantly larger in males compared to females for absolute values but not for indexed values. LA ejection fraction was similar for both sexes. Right atrial (RA) maximal volume was significantly larger in males for both absolute and indexed values, while RA ejection fraction was significantly higher in females.
CONCLUSIONS:

We describe age- and sex-specific reference ranges for the left ventricle, right ventricle and atria in the largest validated normal Caucasian population.},
keywords = {2964, cardiovascular, magnetic resonance},
pubstate = {published},
tppubtype = {article}
}

@article{Petersen2016,
title = {UK Biobank’s cardiovascular magnetic resonance protocol},
author = { Steffen E. Petersen, Paul M. Matthews, Jane M. Francis, Matthew D. Robson, Filip Zemrak, Redha Boubertakh, Alistair A. Young, Sarah Hudson, Peter Weale, Steve Garratt, Rory Collins, Stefan Piechnik, Stefan Neubauer},
url = {http://www.jcmr-online.com/content/18/1/8},
year = {2016},
date = {2016-02-01},
journal = {Journal of Cardiovascular Magnetic Resonance},
abstract = {Background

UK Biobank’s ambitious aim is to perform cardiovascular magnetic resonance (CMR) in 100,000 people previously recruited into this prospective cohort study of half a million 40-69 year-olds.

Methods/design

We describe the CMR protocol applied in UK Biobank’s pilot phase, which will be extended into the main phase with three centres using the same equipment and protocols. The CMR protocol includes white blood CMR (sagittal anatomy, coronary and transverse anatomy), cine CMR (long axis cines, short axis cines of the ventricles, coronal LVOT cine), strain CMR (tagging), flow CMR (aortic valve flow) and parametric CMR (native T1 map).

Discussion

This report will serve as a reference to researchers intending to use the UK Biobank resource or to replicate the UK Biobank cardiovascular magnetic resonance protocol in different settings.
},
keywords = {1995, cardiovascular, magnetic resonance},
pubstate = {published},
tppubtype = {article}
}