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European Radiology

, Volume 29, Issue 2, pp 609–619 | Cite as

CAIPIRINHA-accelerated 10-min 3D TSE MRI of the ankle for the diagnosis of painful ankle conditions: Performance evaluation in 70 patients

  • Benjamin Fritz
  • Susanne Bensler
  • Gaurav K. Thawait
  • Esther Raithel
  • Steven E. Stern
  • Jan Fritz
Musculoskeletal
  • 142 Downloads

Abstract

Objectives

To test the hypothesis that MRI of the ankle with a 10-min 3D CAIPIRINHA SPACE TSE protocol is at least equivalent for the detection of painful conditions when compared to a 20-min 2D TSE standard of reference protocol.

Methods

Following institutional review board approval and informed consent, 70 symptomatic subjects underwent 3T MRI of the ankle. Six axial, sagittal and coronal intermediate-weighted (IW) and fat-saturated T2-weighted (T2FS) 2D TSE (total acquisition time, 20 min), and two sagittal isotropic IW and T2FS 3D CAIPIRINHA TSE (10 min) pulse sequence prototypes were obtained. Following randomization and anonymization, two musculoskeletal radiologists evaluated the 2D and 3D datasets independently. Descriptive statistics, inter-reader reliability, inter-method concordance, diagnostic definitiveness tests were applied. P-values < 0.05 were considered significant.

Results

Raters diagnosed 116 cartilage defects with 2D and 109 with 3D MRI, 35 ligament tears with 2D and 65 with 3D MRI, 18 tendon tears with 2D and 20 with 3D MRI, and 137 osseous abnormalities with 2D and 149 with 3D MRI. The inter-reader agreement was high for 2D (Kendall W, 0.925) and 3D MRI (W, 0.936) (p < 0.05), as was the inter-method concordance (W, 0.919). The diagnostic definitiveness of readers was higher for 3D MRI than 2D MRI in 10-27% of the time, while the reverse was true in 7-11% of the time (p < 0.01).

Conclusions

The performance of 10-min 3D CAIPIRINHA SPACE MRI for the detection of painful ankle conditions is similar to that of a 20-min 2D TSE MRI reference standard.

Key Points

• CAIPIRINHA Acceleration facilitates isotropic 3D MRI of the Ankle in 10 min.

• 10-min 3D CAIPIRINHA MRI and 20-min 2D TSE MRI have similar performance.

• 3D CAIPIRINHA SPACE MRI afforded higher diagnostic definitiveness of readers.

Keywords

Ankle joint Magnetic resonance imaging Imaging Three-dimensional Acceleration 

Abbreviations

2D

Two-dimensional

3D

Three-dimensional

CAIPIRINHA

Controlled aliasing in parallel imaging results in higher acceleration

IW

Intermediate-weighted

MRI

Magnetic resonance imaging

SPACE

Sampling perfection with application optimized contrast using different flip angle Evolution

T2FS

Fat-suppressed T2-weighted

TSE

Turbo spin echo

Notes

Funding

This study has received funding by Siemens AG.

Compliance with ethical standards

Guarantor

The scientific guarantor of this publication is Jan Fritz.

Conflict of interest

The authors of this paper declare relationships with the following companies: Siemens AG.

Statistics and biometry

One of the authors has significant statistical expertise.

Informed consent

Written informed consent was obtained from all subjects in this study.

Ethical approval

Institutional Review Board approval was obtained.

Methodology

• prospective

• experimental

• performed at one institution

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Copyright information

© European Society of Radiology 2018

Authors and Affiliations

  1. 1.RadiologyBalgrist University HospitalZurichSwitzerland
  2. 2.Faculty of MedicineUniversity of ZurichZurichSwitzerland
  3. 3.Russell H. Morgan Department of Radiology and Radiological Science, Section of Musculoskeletal RadiologyJohns Hopkins University School of MedicineBaltimoreUSA
  4. 4.Siemens Healthcare GmbHErlangenGermany
  5. 5.Bond Business SchoolBond UniversityGold CoastAustralia

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