Diagnostic performance of 3D-TSE MRI versus standard multiplanar 2D-TSE MRI at 1.5T in the detection of meniscal and ligamentous tears in the knee with arthroscopic correlation

Congress:

ECR 2013

Poster Number:

C-1715

Type:

Scientific Exhibit

Keywords:

Musculoskeletal joint, Extremities, MR, Imaging sequences, Athletic injuries

Authors:

F. A. Chagas-Neto¹, M. H. Nogueira-Barbosa², M. M. Lorenzato², R. Salim², M. Kfuri-Junior², M. D. Crema³; ¹Fortaleza- Ceara/BR, ²Ribeirão Preto/BR, ³Brasília, DF/BR

DOI:

10.1594/ecr2013/C-1715

DOI-Link:

https://dx.doi.org/10.1594/ecr2013/C-1715

Fig. 1: Figure 1 – Knee MRI sagittal images (A – 2D-TSE and B- 3D-TSE) show an...

Fig. 2: Figure 2 - Knee MRI sagittal images (A – 2D-TSE and B- 3D-TSE) depicts a...

Fig. 3: Figure 3 – Knee MRI coronal (A – 2D-TSE and B- 3D-TSE) and sagittal (D –...

Table 1: Table 1 - Overall Combined Sensitivity, Specificity, Accuracy and agreement...

Purpose

- Knee MRI protocols often use sequences based on two-dimensional (2D) acquisitions with different fluid sensitive weights, acquired in three orthogonal planes (coronal, axial and sagittal). These sequences are widely used in clinical practice in different scenarios as well as in clinical trials.1,2,3 - Although the 2D sequences exhibit high spatial resolution, they are acquired with relatively thick slices, and may present gaps between slices, which might generate partial volume artifacts. It is also impossible to generate reconstructions in multiple planes without significant loss of...

Methods and Materials

Participants - After approval by the institutional review board, a total of 38 patients who were already referred for knee arthroscopy in our institution, were invited to participate in this prospective study and were evaluated with a preoperative MRI of the knee to be operated. MRI Acquisition - All knees were imaged with the same 1.5T MRI unit (Philips Achieva 1.5T MRI System, Philips Medical Systems, Best, The Netherlands) using an 8-channel SENSE knee coil. Both standard 2D and 3D TSE techniques were acquired in...

Results

- There were 38 participants, 28 men and 10 women, aged between 21 and 57 years (mean age of 33.5 +/- 10.4 years). - Regarding the detection of ACL tears (Table 1), the overall combined sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 93%, 85%, 95%, 81% and 91% using 2D-TSE MRI, and 93%, 80%, 93%, 80% and 89% using 3D-TSE MRI, respectively. No significant differences between both techniques were found (Figure 1). The agreement between both techniques was 0.83 [0.70-0.97]. -...

Conclusion

- In conclusion, we demonstrated that 3D-TSE MRI had similar diagnostic performance to a standard 2D-TSE MRI protocol for detecting meniscal and cruciate ligament tears at 1.5T, both for junior and senior musculoskeletal radiologists. - 3D-TSE MRI has the advantage of faster time acquisition, which would be important in clinical practice to increase the patient comfort and the performance of the MR unit.

References

1. Kijowski R, Davis KW, Woods MA, et al. Knee joint: comprehensive assessment with 3D isotropic resolution fast spin-echo MR imaging – diagnostic performance compared with that of conventional MR imaging at 3.0T. Radiology 2009;252:486-495. 2. Peterfy CG, Gold G, Eckstein F, Cicuttini F, Dardzinski B, Stevens R. MRI protocols for whole-organ assessment of the knee in osteoarthritis. Osteoarthritis Cartilage 2006;14 Suppl A:A95-111. 3. Peterfy CG, Schneider E, Nevitt M. The osteoarthritis initiative: report on the design rationale for the magnetic resonance imaging protocol for...