PURPOSE: To evaluate value of post-contrast 3-Dimensional fat suppressed Spoiled GRASS (FS SPGR) in detectiong subtle bony erosion and tenosynovitis of hands and wrists due to early rheumatoid arthritis. MATERIALS AND METHODS: Fourteen MR iraagings of the hands and wrists were performed in 7 early rheu- matoid arthritis without any abnormalities in plain radiography and in 7 healthy volunteers. All subjects underwent MR sequence of coronal 3D FS SPGR with and without contrast enhancornear in 1.5T MR unit. We evaluated the number of the bony erosion and tenosynovitis respectively in pre- and post-contrast FS SPGR images. RESULTS: The abnormal enhancing areas were not demonstrated in 7 healthy volunteers. Seven patients had 25 bony erosions in pre-contrast FS SPGR and 52 bony erosions with tenosynovitis (n=10) in post-contrast FS SPGR. Enhancing joint spaces were shown in 8 cases CONCLUSION: Post-contrast FS SPGR was better than pre-contrast FS SPGR in the evaluation of early rheumaotid arthritis and is valuable as a baseline study.