Title Page
Contents
ABSTRACT 8
Ⅰ. Introduction 10
1.1. Background 10
1.2. Fluid-attenuated inversion recovery sequence with fat suppression (FLAIR-FS) 10
1.3. Objective 11
Ⅱ. Materials and methods 12
2.1. Patients 12
2.2. Magnetic resonance imaging protocol 12
2.3. Image analysis 15
2.4. Statistical analysis 19
Ⅲ. Results 20
3.1. Patient characteristics 20
3.2. Synovial visibility on FLAIR-FS and CE-T1 images 20
3.3. Comparison of synovial thickness on FLAIR-FS and CE-T1 images 34
3.4. Interobserver and intraobserver reliability in the assessment of synovium 36
Ⅳ. Discussion 37
Ⅴ. Conclusion 41
References 42
Abstract (in Korean) 46
Table 1. Imaging parameters of FLAIR-FS and CE-T1 images 14
Table 2. Comparison of FLAIR-FS and CE-T1 for the assessment of synovitis 31
Table 2-1. Synovial visibility grades on FLAIR-FS and CE-T1 31
Table 2-2. Synovial thickness scores on FLAIR-FS and CE-T1 32
Table 3. Dichotomized synovial visibility graded on FLAIR-FS and CE-T1 images 33
Table 4. Synovial thickness scored on FLAIR-FS and CE-T1 images in each joint compartment 35
Figure 1. Axial contrast-enhanced T1 weighted images showing synovial enhancement.... 17
Figure 2. A 48-year-old male with chronic lateral ankle instability. (a, b) Axial contrast-enhanced T1 weighted sequence (CE-T1) with fat... 22
Figure 3. A 68-year-old male with osteoarthritis of the ankle joint. (a) Axial contrast-enhanced T1 weighted sequence (CE-T1) with fat... 25
Figure 4. A 60-year-old male with osteochondral lesion of the talus. (a, b) Axial contrast-enhanced T1 weighted sequence (CE-T1) with fat... 28