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Gatti M, Palmisano A, Gerboni M, Cau R, Pintus A, Porcu M, Tore D, Vignale D, Andreis A, Bergamasco L, De Ferrari GM, Esposito A, Saba L, Fonio P, Faletti R. Value of a short non-contrast CMR protocol in MINOCA. Eur Radiol 2024; 34:994-1002. [PMID: 37581660 PMCID: PMC10853081 DOI: 10.1007/s00330-023-10096-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/24/2023] [Accepted: 05/30/2023] [Indexed: 08/16/2023]
Abstract
OBJECTIVES To evaluate the diagnostic performance of a short non-contrast CMR (ShtCMR) protocol relative to a matched standard comprehensive CMR (StdCMR) protocol in patients with myocardial infarction with non-obstructive coronary arteries (MINOCA). METHODS This multicenter retrospective study included patients with a working diagnosis of MINOCA who underwent a StdCMR between January 2019 and December 2020. An expert and a non-expert reader performed a blinded reading with the ShtCMR (long-axis cine images, T2w-STIR, T1- and T2-mapping). A consensus reading of the StdCMR (reference standard) was performed at least 3 months after the ShtCMR reading session. Readers were asked to report the following: (1) diagnosis; (2) level of confidence in their diagnosis with the ShtCMR; (3) number of myocardial segments involved, and (4) functional parameters. RESULTS A total of 179 patients were enrolled. The ShtCMR lasted 21 ± 9 min and the StdCMR 45 ± 11 min (p < 0.0001). ShtCMR allowed reaching the same diagnosis as StdCMR in 85% of patients when interpreted by expert readers (rising from 66% for poor confidence to 99% for good, p = 0.0001) and in 73% (p = 0.01) by non-expert ones (60% for poor vs 89% for good confidence, p = 0.0001). Overall, the ShtCMR overestimated the ejection fraction, underestimated cardiac volumes (p < 0.01), and underestimated the number of segments involved by pathology (p = 0.0008) when compared with the StdCMR. CONCLUSION The ShtCMR was found to be a debatable alternative to the StdCMR in patients with MINOCA. Nevertheless, when an experienced reader reaches a good or very good diagnostic confidence using the ShtCMR, the reader may choose to stop the examination, reducing the length of the CMR without affecting the patient's diagnosis. CLINICAL RELEVANCE STATEMENT A short non-contrast CMR protocol may be a viable alternative to standard protocols in selected CMR studies of patients with MINOCA, allowing for faster diagnosis while reducing time and resources and increasing the number of patients who can be scanned. KEY POINTS • The ShtCMR lasted 21 ± 9 min and the StdCMR 45 ± 11 min (p < 0.0001). • In 57% of patients with MINOCA, the experienced reader considers that contrast medium is probably not necessary for diagnosis without affecting the patient's diagnosis (99% of agreement rate between ShtCMR and StdCMR).
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Affiliation(s)
- Marco Gatti
- Radiology Unit, Department of Surgical Sciences, University of Turin, Via Genova 3, 10126, Turin, Italy.
| | - Anna Palmisano
- Clinical and Experimental Radiology Unit, Experimental Imaging Center, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Mattia Gerboni
- Radiology Unit, Department of Surgical Sciences, University of Turin, Via Genova 3, 10126, Turin, Italy
| | - Riccardo Cau
- Department of Radiology, AOU Cagliari, University of Cagliari, Cagliari, Italy
| | - Alessandra Pintus
- Department of Radiology, AOU Cagliari, University of Cagliari, Cagliari, Italy
| | - Michele Porcu
- Department of Radiology, AOU Cagliari, University of Cagliari, Cagliari, Italy
| | - Davide Tore
- Radiology Unit, Department of Surgical Sciences, University of Turin, Via Genova 3, 10126, Turin, Italy
| | - Davide Vignale
- Clinical and Experimental Radiology Unit, Experimental Imaging Center, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Alessandro Andreis
- Division of Cardiology, Department Cardiovascular and Thoracic, Città Della Salute E Della Scienza Hospital, University of Turin, Turin, Italy
| | - Laura Bergamasco
- Radiology Unit, Department of Surgical Sciences, University of Turin, Via Genova 3, 10126, Turin, Italy
| | - Gaetano Maria De Ferrari
- Division of Cardiology, Department Cardiovascular and Thoracic, Città Della Salute E Della Scienza Hospital, University of Turin, Turin, Italy
| | - Antonio Esposito
- Clinical and Experimental Radiology Unit, Experimental Imaging Center, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Luca Saba
- Department of Radiology, AOU Cagliari, University of Cagliari, Cagliari, Italy
| | - Paolo Fonio
- Radiology Unit, Department of Surgical Sciences, University of Turin, Via Genova 3, 10126, Turin, Italy
| | - Riccardo Faletti
- Radiology Unit, Department of Surgical Sciences, University of Turin, Via Genova 3, 10126, Turin, Italy
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