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Researchers develop faster and cheaper cardiac imaging test for developing countries

The scan changed clinical management in one-third of patients



Prague, Czech Republic – 26 May 2017: Researchers in the UK and Peru have developed a faster and cheaper cardiac imaging test that can be used in developing countries, according to the results of the INCA-Peru study presented today at EuroCMR 2017.(1) The scan is three times faster, less than one-fifth of the cost, and changed clinical management in 33% of patients.

Cardiovascular magnetic resonance (CMR) is the gold standard for diagnosing many cardiovascular diseases. It is used to measure the structure and function of the heart, and to assess scarring on the heart muscle after a heart attack to predict if another will occur.

Lead author Dr Katia Menacho, a cardiologist from Peru and PhD student at University College London (UCL), UK, said: “In Peru just two public hospitals offer CMR – each performs 12 scans on one day a week. Five private hospitals provide CMR at $USD 600–800 per scan. Public hospitals without CMR refer to the private sector and it takes up to three months to approve the paperwork, delaying diagnosis and treatment.”

The Impact of Non-invasive CMR Assessment (INCA)-Peru study was set up to develop and test an ultrafast CMR protocol for wider uptake in Peru. The study was an international academic and political collaboration between Peru, the UK, the USA and Brazil.

An initial protocol was developed at UCL which reduced average scan time from 60 to ten minutes. It was successfully used in Thailand to assess cardiac and liver iron overload in patients with thalassaemia major(2). The protocol was adapted for the INCA-Peru study by adding the contrast agent gadolinium which is critical for the detection of cardiac fibrosis and infarction, and the diagnosis of various cardiovascular diseases. It was tested in a pilot study of 50 patients at UCL and each scan took 15 to 20 minutes.

For the current analysis, the ultrafast CMR protocol using contrast was tested over two days at two hospitals in Peru, accompanied by training for local cardiologists, radiologists, and technicians. The study included 100 patients with suspected cardiomyopathy and 11 healthy controls. All of the patients were under local cardiology care and had never been assessed by CMR.

There were no scan-related complications. All scans were diagnostic, although two patients had a repeat scan (one due to failure of contrast delivery and one to confirm unexpected cardiac amyloidosis). Gadolinium based contrast agents were administered to 95% of patients (5% of patients had iron overload).

Each ultrafast CMR scan took 18 minutes on average and cost $USD 150. The most common underlying diagnoses were hypertrophic cardiomyopathy (21%), non-ischaemic dilated cardiomyopathy (17%), and ischaemic cardiomyopathy (11%), plus 20 other diagnoses including tumours, congenital heart disease, myocardial iron overload, amyloidosis, vasculitis, and apical thrombus.

CMR had an impact on the clinical management of 33% of patients. CMR revealed a new, unsuspected diagnosis in 20% of patients, leading to a complete change in management. In 30% of patients no further cardiac testing was needed (coronary angiography, computed tomography, cardiac biopsy).

“We showed that this ultrafast CMR protocol can be used to accurately diagnosis patients leading to changes in clinical management,” said Dr Menacho. “The protocol takes one-third of the standard scan time at a fraction of the cost.”

INCA-Peru researchers will follow-up the patients for two years to evaluate the impact of diagnosis by ultrafast CMR on long-term morbidity and mortality.

Dr Menacho said: “Accurate diagnoses provided by CMR have reduced morbidity and mortality in Europe and we hope to find the same in Peru. If we show long-term benefits on prognosis we will seek support from the Peruvian government to provide ultrafast CMR at more hospitals in Peru. The accurate diagnosis provided by CMR should lead to more targeted patient care and better outcomes.”

ENDS


Notes to editor

ESC Press Office
Tel: +33 (0) 4 89 87 34 83
Email: press@escardio.org

SOURCES OF FUNDING: The study was funded by the UK Foreign & Commonwealth Office.
 
DISCLOSURES: None.

Acknowledgements
The UK ambassador to Peru, Anwar Choudhury and team; the Peruvian Work Ministry, ESSALUD; and The Peruvian Scientific, Technological Development and Technological Innovation (FONDECYT).

References and notes
(1)Dr Menacho will present the abstract ‘Impact of non-invasive CMR assessment in Peru in the developing world: the INCA (Peru) study’ during the BEST Oral Abstracts session which takes place on 26 May at 09:45 in Main room 1.
(2)Abdel-Gadir A, et al. Ultrafast magnetic resonance imaging for iron quantification in thalassemia participants in the developing world: The TIC-TOC Study (Thailand and UK International Collaboration in Thalassaemia Optimising Ultrafast CMR). Circulation. 2016;134:432–434. doi:10.1161/CIRCULATIONAHA.116.022803.

About EuroCMR
EuroCMR is the annual CMR conference of the European Association of Cardiovascular Imaging (EACVI). The EuroCMR meeting has become the largest and most important CMR meeting in Europe with an increasing number of attendees, faculty and exhibitors from all over the world.

About the European Association of Cardiovascular Imaging (EACVI)
The European Association of Cardiovascular Imaging (EACVI), a registered branch of the ESC, is the world leading network of Cardiovascular Imaging (CVI) experts, welcoming over 6 000 CVI professionals including cardiologists, sonographers, nurses, basic scientists and allied professionals.

About the European Society of Cardiology
The European Society of Cardiology brings together health care professionals from more than 140 countries, working to advance cardiovascular medicine and help people lead longer, healthier lives.

Information for journalists attending EuroCMR 2017
EuroCMR 2017 takes place 25 to 27 May in Prague, Czech Republic, at the Clarion Congress Hotel Prague (CCHP). The full scientific programme is available here
Journalists wishing to attend EuroCMR should email eurocmr2017@aimgroup.eu