Author + information
- Received April 24, 1989
- Revision received July 10, 1989
- Accepted July 19, 1989
- Published online January 1, 1990.
- Jennifer A. Johns, MBBS, FRACPa,∗,
- Marcia B. Leavitt, BAa,
- John B. Newella,
- Tsunehiro Yasuda, MDb,
- Robert C. Leinbach, MD, FACCa,
- Herman K. Gold, MD, FACCa,
- Dianne Finkelstein, PhDa and
- Robert E. Dinsmore, MD, FACCb,∗
- ↵∗Address for reprints: Robert E. Dinsmore, MD, Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts 02114.
Nuclear magnetic resonance (NMR) imaging has shown potential in the detection and characterisation of acute myocardial infarction in humans. This study was performed to evaluate the capability of NMR imaging in the measurement of infarct size in patients with recent myocardial infarction. Electrocardiograpic (ECG)-gated spinecho NMR imaging was performed in 26 patients a mean of 9 ± 3 days (range 5 to 20) after infarction. The imaging technique used provided single-slice, spin-echo (time to echo [TE] = 60 ms) images of the left ventricle in its true short axis, allowing direct correlation of NMR infarct location and size with the region of severe hypokinesia on left ventriculography.
In all 20 patients with complete NMR studies, infarct location was correctly identified by using specific, objective criteria. The correlation between the mean infarct volume (29 ± 11 ml) and the quantitated left ventricular hypokinetic segment (7.1 ± 4.0 cm) was good (r = 0.84, p = 0.0002), suggesting that NMR imaging of the heart may have a role in the noninvasive assessment of myocardial infarct size in patients.
- Received April 24, 1989.
- Revision received July 10, 1989.
- Accepted July 19, 1989.