Three-dimensional magnetic resonance imaging technique for myocardial-delayed hyperenhancement: A comparison with the two-dimensional technique

✍ Scribed by Servet Tatli; Kelly H. Zou; Mark Fruitman; H. Glenn Reynolds; Thomas Foo; Raymond Kwong; E. Kent Yucel

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 119 KB
• Volume: 20
• Category: Article
• ISSN: 1053-1807
• DOI: 10.1002/jmri.20124

✦ Synopsis

Abstract

Purpose

To compare two‐dimensional and three‐dimensional techniques in the detection of myocardial infarction (MI) and in the grading transmural extent (TE).

Materials and Methods

Twelve patients with clinically proven MI were examined using two‐dimensional and three‐dimensional techniques with cardiac‐gated, breath‐hold, T1‐weighted gradient echo sequence with an inversion recovery pulse following gadopentetate dimeglumine (Gd‐DTPA) at 0.2 mmol/kg. Contrast‐to‐noise, signal‐to‐noise, and signal intensity ratios (CNR, SNR, and SIR, respectively) were derived and compared for each technique.

Results

From two‐dimensional to three‐dimensional, statistical significant difference was found in the mean CNR (11.65 vs. 56.59; P = 0.002), SNR (18.03 vs. 76.90; P < 0.001), and SIR (3.6 vs. 6.36; P = 0.05). Intraobserver agreement (kappa) between two‐dimensional and three‐dimensional were R1 = 74% and R2 = 90%. Interobserver agreements between the readers were two‐dimensional = 77% and three‐dimensional = 79%.

Conclusion

Mean CNR, SNR, and SIR are significantly increased in the three‐dimensional technique compared to the conventional two‐dimensional technique. J. Magn. Reson. Imaging 2004;20:378–382. © 2004 Wiley‐Liss, Inc.