ABSTRACT
Objective: The theory and repair summary of infusion pump were introduced to improve its maintenance and usage by taking SK-600I infusion pump as an example. Methods:With the cases from practical works including faults such as under-pressure alarm, bubble alarm, block alarms and rate accuracy problem, true or fault respectively, the principle, maintenance, attention issues, fault analyses and repairing methods of infusion pump were presented. Results:To help operators and technicians deal with all kinds of pump failures. Some advices on improving theSK-600I infusion pump design were provided. Conclusion: Infusion pump is a high intelligent medical device, but improper use, mechanical and electrical fault will put adverse impact on its application. Mastering the basic principles, summarizing practical experiences, strengthen operator training, can make better use of infusion pump.
ABSTRACT
Objective To evaluate the reasons of positive MR findings and negative radionuclide bone scan in the spinal metastasis.Methods 68 patients with spinal metastasis were undergone MR scan and radionuclide bone scan.MRI appearances including the site,location and their relation to the cortex of bone were analyzed. The relationship between MRI and radionuclide bone scan appearances were also analyzed.Results 561 lesions were detected by MRI,and only 199 lesions were found by raionuclide(199/561=35.47%).133 lesions located in the bone marrow without cortex erosion were not detected by radionuclide bone scan. The detective ratios of lesions located in the subcortex and through cortex were 25.58%(55/215) and 67.61%(144/213) on radionuclide bone scan respectively. The detective ratios in small lesions (