Magnetom verio 3.0 tesla

The breast MRI studies were performed on a MAGNETOM Verio 3.0 Tesla (T) scanner (Siemens Medical Solutions, Germany) using a dedicated 16-channel breast-specific phased array surface coil with patients in the prone position. Parameters for several sequences were listed as follows: T2-weighted imaging (T2WI): TR/TE, 4000/70 ms; slice thickness, 5 mm, 0.5 mm gap; field of view (FOV), 340 × 340; matrix, 448 × 448; NEX,1. T1WI (FLASH-3D): TR/TE, 3.6/2.1 ms; slice thickness, 1.2 mm, 0.2 mm gap; FOV, 340 × 340; matrix, 448 × 380; flip angle, 10°; NEX,0.7. EPI-DWI: TR/TE, 8300/85 ms; slice thickness, 4 mm, 2 mm gap; FOV, 360 × 147; matrix, 220 × 220; NEX,3; performed by fat suppression technology with b values of 0 and 1000 s/mm². DCE-MRI was performed by the following parameters: TR/TE, 4.5/1.6 ms; flip angle, 10°; slice thickness,1 mm, 0.2 mm gap; matrix, 448 × 344; FOV, 340 × 340; NEX, 1. The first phase scan was conducted before the contrast agent was injected. After 25 s, Gd-DTPA (0.1–0.15 mmol/kg) was injected intravenously at a flow rate of 3.0 ml/s with a high-pressure syringe, followed by administration of a saline flush. The acquisition time was 487 s (77 s per dynamic sequence).