ABSTRACT
Since the outbreak of Novel Coronavirus Pneumonia(NCP), hospitals have taken the fight against the virus as its own responsibility, and keep standing in the front line of epidemic prevention and control. The continuous input of anti-epidemic forces in hospitals also brings challenges to the medical supplies support, including the management of protective supplies and the maintenance of medical equipment. In the face of increasing security pressure, the medical materials support team broke the game on multiple fronts. Firstly, the team implements active material procurement strategy, sets material distribution priority according to risk level, releases materials uniformly based on stock and use, and implements traceability management of donated materials to ensure material supply. Secondly, centralized allocation management of equipment, emergency installation, advanced maintenance and emergency maintenance work is effectively completed. Thirdly, disinfection strategies for items and equipment are developed safely and effectively with the aid of disinfection equipment functions. At last, personnel management and training have been strengthened. These measures have provided strong support for the orderly prevention and control of the epidemic.
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the changes of phosphorus metabolites in leukemic infiltration of liver (LIL) with two-dimensional chemical shift imaging(2D CSI)(31)phosphorus MR spectroscopy ((31)P MRS).</p><p><b>METHODS</b>Fifteen patients with LIL and 12 healthy subjects (control group) were scanned with liver 2D CSI(31)P MRS by a 1.5T MR Scanner(Sonata, Siemens Corporation). Relative quantification of phosphorus metabolites including phosphomonoesters (PME), inorganic phosphate (Pi), phosphodiesters (PDE) and beta-adenosine- triphosphate (beta-ATP) were detected and after calibrated with model factor, the ratios of PME/PDE, PME/(PME+PDE), PME/ATP, PDE/ATP and Pi/ATP were analyzed.</p><p><b>RESULTS</b>Compared with control group, the PME value, PME/PDE ratio, PME/(PME+PDE) ratio and PME/ATP ratio were increased in LIL group (1.992 +/-0.876 Compared with 1.167 +/-0.427, P <0.05), (0.551 +/-0.339 Compared with 0.254 +/-0.059,P <0.01), (0.326 +/-0.13 Compared with 0.199 +/-0.049, P <0.01)and (1.402 +/-0.654 Compared with 0.792 +/-0.232, P <0.01) respectively.</p><p><b>CONCLUSION</b>(31)P MRS examination can be used as a non-invasive procedure to evaluate the changes of phosphorus metabolites of leukemic infiltration of liver. The increase of PME value and its ratios to PDE, ATP and PME+PDE may indicate leukemic infiltration of liver.</p>
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Acute Disease , Leukemia , Pathology , Leukemic Infiltration , Metabolism , Pathology , Liver , Metabolism , Pathology , Magnetic Resonance Spectroscopy , Methods , Phosphorus Isotopes , MetabolismABSTRACT
This paper is to approach a simple method for Wiener spectrum measurement in different medial imaging systems. The program written in VC++6.0 can be used to obtain the density datum as discrete signals by scanning films on AGFA DUOSCAN T2000XL scanner, then WS values can be calculated by using fast Fourier transform. The method is applied to different x-ray photographs and the WS values are consistent with the known datum from MD-100 micro-densimeter. The method can make automatic data collection and procedural calculation, showing the characteristics of its simplicity and high speed.
Subject(s)
Algorithms , Fourier Analysis , Image Processing, Computer-Assisted , Methods , Quality Control , Radiographic Image Enhancement , Methods , Radiographic Image Interpretation, Computer-Assisted , Methods , Radiography , Radiology Information Systems , Reference Standards , X-Ray FilmABSTRACT
The paper introduces a method of self-gated signal's collection based on TrueFisp sequence, during self-gated cardiac magnetic resonance imaging. There is no significant difference in its image quality and only a slight loss in efficiency in comparison with MRI images by ECG-based triggering.
Subject(s)
Electrocardiography , Methods , Magnetic Resonance Imaging , MethodsABSTRACT
Objective To compare two methods 3D flash and diffusion-weighted images(DWI)in reconstructing the brain surface anatomy,and to evaluate their displaying ability,advantages,limitations and clinical application.Methods Thrity normal cases were prospectively examined with 3 D flash sequence and echo-planar DWI.Three-dimensional images were acquired with volume-rendering on workstation.Brain surface structures were evaluated and scored by a group of doctors.Results Main structures of brain surface were clearly displayed on three-dimensional images based on 3D flash sequence.Average scores were all above 2.50.For images based on DWI,precentral gyrus,postcentral gyrus,superior parietal lobule, superior frontal gyrus,precentral sulcus,central sulcus,postcentral sulcus,intraparietal sulcus and superior frontal sulcus were best shown with average scores between 2.60-2.75,However,supramarginal gyrus, angular gyurs,middle frontal gyrus,inferior frontal gyrus,superior temporal gyrus,lateral sulcus,inferior frontal sulcus could not be well shown,with average scores between 1.67-2.48.Middle temporal gyrus, inferior temporal gyrus,superior temporal sulcus and inferior temporal sulcus can only get scores from 0.88 to 1.27.Scores of images based on 3D flash were much higher than that based on DWI with distinct differentiations,P values were all below 0.01.Conclusion Three-dimensional images based on 3D flash can really display brain surface structures.It is very useful for anatomic researches.Three-dimensional reconstruction of brain surface based on DWI is a worthy technique to display brain surface anatomy, especially for frontal and parietal structures.