Objective To compare the diagnostic value of CT and MRI in the diagnosis of far lateral lumbar disc herniation (FLLDH). Methods The CT and MRI imagine data of 34 patients with FLLDH were retrospectively analyzed and compared. Results The positive rate of CT in diagnosis FLLDH was 88.24%(30/34), and the positive rate of MRI was 94.12%(32/34). There was no statistical difference (P>0.05). There were no statistical differences in the diagnosis of disease region and image representation between CT and MRI (P>0.05). Conclusions There is higher coincidence rate of CT and MRI in the diagnosis of FLLDH, but the two imaging methods have their own advantages and disadvantages. In clinical practice, the two imaging methods can be used to improve the clinical diagnosis rate, and provide a reliable basis for determining the surgical treatment options.

Taking 5 modes of large-scale X-ray apparatus as examples including GE TX-Ⅲ 500mA, Shimadzu ED125L 500 mA, GE VR 500 mA, Siemens Tridoros 5S 1 000 mA, Siemens Heliophos 5S 500 mA, the replacement techniques are introduced in such aspects as the preparation of rooms and tools before replacement, disassembly, transport, reinstallation, electrifying and test. Cooperation of personnel is an important factor to smoothly complete the task.

Objective To discuss clinical CT signs identification of intractable seizures pancreatitis and pancreatic cancer. Methods Clinical and CT signs of 30 cases with pancreatic cancer and 30 cases with intractable seizures pan-creatitis were respectively analyzed. Clinical and CT signs were analyzed. Results CT imaging of the pancreas showed,abnormal pancreas, pancreatic duct dilatation proportion of two group showed no significant difference(P>0.05); The performance of pancreatic cancer CT signs showed the volume of the pancreas increased limitedly, and the volume of the intractable seizures pancreatitis increased widespread(P<0.01);there was one case of pancreatic cancer through the pancreatic duct dilatation lesions,but 11 cases of intractable seizures pancreatitis group(P<0.01). CT enhancement re-sults showed that, pancreatic cancer group was lumps or nodules continued weak strengthening, and intractable seizures pancreatitis was non-mass type heterogeneous enhancement (P<0.01). Conclusion CT signs of intractable seizures pancreatitis and pancreatic cancer are different. Especially enhanced scan can provide the basis for the identi-fication of the two.