The invention discloses an MRT local coil apparatus (1), comprising - at least one carrier (T1, T2)； and - at least one antenna element (K11 - K202) adapted for transmitting and/or receiving of MRT signals； wherein the at least one antenna element (K11 - K202) is arranged in the carrier (T1, T2)； wherein the carrier (T1) comprises at least one intervention opening (2) adapted to provide an access for a medical instrument to the patient. The MRT local coil apparatus (1) may be converted in a diagnosis local coil apparatus or an intervention local coil apparatus and vise versa by moving the first carrier portion (T1) with antenna elements (K11 - K23) with respect to the second carrier portion (T2) with antenna elements (K100 - K202). The invention also discloses an MRT perineal local coil apparatus (200) arranging at least one antenna element (218, 220, 222) in the perineal portion of a patient.本發明公開了一種磁共振斷層掃描儀(MRT)局部線圈裝置(1)，包括：- 至少一個載體(T1、T2)；及- 至少一個天線元件(K11-K202)，用於傳輸與/或接收MRT信號；其中所述至少一個天線元件(K11-K202)佈置在載體中(T1、T2)中；其中所述載體(T1)包括至少一個介入開口(2)，用於提供一個將醫療器械放進患者體內的入口。所述MRT局部線圈裝置(1)可以通過將帶天線元件(K11-K23)的第一載體部分(T1)相對帶有天線元件(K100-K202)的第二載體部分(T2)轉動，而在診斷局部線圈裝置或介入局部線圈裝置之間轉換，反之亦然。本發明還公開了一種在患者會陰部佈置至少一個天線元件(218、220、222)的MRT會陰局部線圈裝置(200)。
