关键词: 磁共振成像, 腹部, Tim技术

Abstract: Objective To investigate the application value of Tim technique in the optimized scanning scheme of whole abdomen MRI in tumor patients. Methods The Siemens 3.0 MRI （Siemens Skyra 3.0T） was used to carry out contrast-enhanced MRI scan of the whole abdomen in 132 patients clinically diagnosed with tumors. The Tim technology was applied to the optimized scanning scheme of the whole abdomen in 78 patients and the traditional segmental scanning scheme of the whole abdomen in 54 patients. The optimized scanning scheme of the whole abdomen based on Tim technology adopts Tim coil, automatic bed shifting and seamless connection technology. Traditional segmental scanning scheme adopts abdominal and pelvic segmental scanning scheme. The the completion time of two different scanning schemes and the image quality obtained by scanning were compared and discussed. Results The average inspection time of the optimized all-abdominal scanning scheme based on Tim technology was （37.9±6.0）min and the image quality excellence rate was 97.4%. The average inspection time of the traditional segmental scanning scheme was （47.2±3.3）min and the image quality excellence rate was 96.2%. The examination time of the Tim technique is significantly shorter than that of the traditional segmental scanning scheme （P<0.01）, and the visual and clear continuous and complete images of the whole abdominal organs, retroperitoneal vessels and abdominal vessels can be obtained. Conclusion The optimized scanning scheme of the whole abdomen based on Tim technology can comprehensively, intuitively and clearly display the structure of abdominal and pelvic organs, and the concise and integrated images can reduce the working intensity of doctors who read the images, which is more suitable for the preoperative and postoperative evaluation of huge lesions and multiple lesions in the abdominal cavity.

Key words: MRI, abdomen, full-matrix imaging