The early diagnosis value of MRI for detecting spinal inflammatory lesions in ankylosing spondylitis / 实用放射学杂志

Objective To investigate the early diagnosis value of MR by detecting spinal inflammatory lesions in ankylosing spon-dylitis (AS).Methods Forty patients were involved in this study,including 20 cases with short inflammatory back pain (IBP)histo-ry (duration ≤18 months)and 20 cases with long IBP history (duration ≥24 months).MR images were analyzed retrospectively. Results Patients with a short history of IBP had 7 lesions in vertebral bodies (anterior/posterior spondylitis and spondylodiscitis) and 33 lesions in posterior spinal structures (arthritis of costovertebral joints,costotransversal joints,zygapophyseal joints and en-thesitis of spinal ligaments).Patients with a long history of IBP had 27 lesions in vertebral bodies and 24 lesions in posterior spinal structures.Patients with a short history of IBP had significantly more lesions in posterior spinal structures than in vertebral bodies with 82.5% (33/40)vs 1 7.5% (7/40),respectively (P <0.01).In contrast,patients with a long history of IBP had significantly more inflammation in vertebral bodies with 79.4% (27/34)vs 20.6% (7/34),respectively (P <0.01).Conclusion Inflammatory spinal lesions in patients with a short history of IBP are seen more often in the posterior structures.Early detection of inflammatory spinal lesions by MRI is useful for early diagnosis of AS.

The diagnosis value of hypotonic water filling method and CT multi planar reconstruction in stomach tumors / 实用放射学杂志

Objective To investigate the value in the diagnosis of tumor of the stomach by hypotonic water filling method com-bined with CT multi planar reconstruction (MPR).Methods CT image data of 21 5 cases with gastric tumor confirmed by operation and pathology in our hospital were analysed retrospectively.Conventional CT enhanced scan was obtained in patients with the stom-ach hypotonic water filling condition,and MPR CT characteristics of lesions were observed.Results In the 21 5 cases of gastric be-nign or malignant lesions,MPR showed 5 pathological types in 210 cases.In the conventional CT examination,the tumor diagnosis rate had obvious improvement in different gastric parts and types of the stomach tumors through CT MPR.Conclusion There is high detection rate in the diagnosis of gastric tumors using hypotonic water filling method with MPR,which can accurately display invasion and metastasis,and reduce the misdiagnosis and missed diagnosis in gastric tumor.

MRI feature of the primary spinal lymphoma / 实用放射学杂志

Objective To explore the MRI features of primary spinal lymphoma,and aim at improving the understanding of the disease.Methods The MRI data of primary spinal lymphoma in 8 cases were analyzed retrospectively,which were confirmed by op-eration and pathology,all cases were experienced by the plain MRI scan and enhancement scan.Results There were 6 cases located in thoracic vertebra,5 cases located in lumbar spine,and 2 cases located in sacral vertebral,the MRI performance were the bone damage and bone marrow infiltration in vertebral bodies and accessories,which were showed low signal on T1 WI ,high signal on T2 WI;Compared to adjacent muscles,a obscure boundary of soft tissue masses were also showed low signal on T1 WI ,high signal on T2 WI,and were significantly enhanced.Conclusion MRI is helpful for localization and qualitative diagnosis of the primary spinal lymphoma.