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Single-Shot Inversion Recovery TrueFISP for Assessment of Myocardial Infarction

Armin Huber1, Stefan O. Schoenberg1, Benedikt Spannagl1, Johannes Rieber2, Isabelle Erhard2, Volker Klauss2 and Maximilian F. Reiser1

1 Institut für Klinische Radiologie, Klinikum Großhadern, Marchioninistrasse 15, Munich 81377, Germany.
2 Department of Cardiology, Klinikum Innenstadt, Munich, Germany.


Figure 1
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  		Fig. 1 —Diagram shows timing of cine inversion recovery (IR) true fast imaging with steady-state precession (trueFISP) pulse sequence. Segments acquired with identical inversion time (TI) over all cardiac cycles during one breath-hold are used to reconstruct one image. For each delay time after inversion pulse, an image with typical contrast for defined TI is reconstructed.

 

Figure 2
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  		Fig. 2A —63-year-old woman with myocardial infarction in anteroseptal and inferoseptal segments after occlusion of left anterior descending artery. Inversion recovery true fast imaging with steady-state precession (trueFISP) image shows myocardial infarction (arrow) with hyperintense signal intensity. Infarction has complete transmural extent.

 

Figure 3
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  		Fig. 2B —63-year-old woman with myocardial infarction in anteroseptal and inferoseptal segments after occlusion of left anterior descending artery. Inversion recovery turbo fast low-angle shot (turboFLASH) image shows myocardial infarction (arrow) with hyperintense signal intensity. Infarction has complete transmural extent. Area of infarction is identical for both pulse sequence techniques.

 

Figure 4
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  		Fig. 3A —47-year-old man with myocardial infarction in anteroseptal and inferoseptal segments after occlusion of left anterior descending artery. Inversion recovery turbo fast low-angle shot (turboFLASH) image shows myocardial infarction with hyperintense signal intensity. Infarction has complete transmural extent in anteroseptal segment (arrows). Extent of infarction in a part of inferoseptal segment is 50% of thickness of myocardium.

 

Figure 5
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  		Fig. 3B —47-year-old man with myocardial infarction in anteroseptal and inferoseptal segments after occlusion of left anterior descending artery. Inversion recovery true fast imaging with steady-state precession (trueFISP) image shows myocardial infarction with hyperintense signal intensity. Infarction has complete transmural extent in anteroseptal segment (arrows). Extent of infarction in part of inferoseptal segment is 50% of thickness of myocardium.

 

Figure 6
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  		Fig. 4A —Scattergrams reveal volumes and areas of myocardial infarctions. Scattergram reveals values of volumes of myocardial infarctions for two pulse sequence techniques: inversion recovery (IR) true fast imaging with steady-state precession (trueFISP) and IR turbo fast low-angle shot (turboFLASH). Values for volume of myocardial infarction show excellent correlation.

 

Figure 7
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  		Fig. 4B —Scattergrams reveal volumes and areas of myocardial infarctions. Scattergram reveals values of area of myocardial infarctions on selected slice. Two pulse sequence techniques, IR trueFISP and IR turboFLASH, are compared.

 

Figure 8
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  		Fig. 5A —Bland-Altman's plots on selected slice of two pulse sequence techniques: inversion recovery true fast imaging with steady-state precession (IR trueFISP) and inversion recovery turbo fast low-angle shot (IR turboFLASH). Bland-Altman's plot of infarct volumes. One data point is above threshold, as defined by SD.

 

Figure 9
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  		Fig. 5B —Bland-Altman's plots on selected slice of two pulse sequence techniques: inversion recovery true fast imaging with steady-state precession (IR trueFISP) and inversion recovery turbo fast low-angle shot (IR turboFLASH). Bland-Altman's plot of infarct areas. One data point is above threshold and one data point below threshold, as defined by SD.

 

Figure 10
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  		Fig. 6 —67-year-old man with transmural myocardial infarction after occlusion of circumflex artery. Nine MR images, acquired with inversion recovery true fast imaging with steady-state precession (trueFISP) during a single breath-hold, reveal transmural infarction (arrow) as hyperenhanced region in inferolateral segments.

 

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