ABSTRACT
@#<b>Objective</b> To investigate the differences in output results between difference analysis software, and to provide a reference for the improvement of quality control and the standard revision of SPECT equipment. <b>Methods</b> The image analysis software for quality control held by 14 radiological health technical service institutions was selected as the research subjects using the cluster sampling method. The results of the comparison were analyzed and evaluated according to the Z-score method with certified reference values. <b>Results</b> In the comparison items of “intrinsic uniformity” and “intrinsic spatial linearity”, the number of software with suspicious, deviated and incorrect results accounted for a relatively high proportion, while the results of other comparison items were satisfactory. <b>Conclusion</b> The applicability of SPECT image analysis software lacks effective supervision measures. Relevant departments should introduce feasible measures to standardize the software production and update process, accelerate the construction of radiological health information reporting platform, and promote the healthy development of the radiation health testing industry.
ABSTRACT
Objective:To discuss the problems existing in the implementation of the Chinese health industry standard WS 523-2019 by testing SPECT device.Methods:Under the WS 523-2019 standards, a total of 10 SPECT devices were tested with regard to their SPECT reconstructed spatial resolution (SRSR), system planar sensitivity (SPS), system spatial resolution (SSR), whole body system spatial resolution (WSSR), intrinsic uniformity (IU), intrinsic count rate performance (ICR), intrinsic spatial resolution (ISR) and intrinsic spatial linearity(ISL).Result:Under the requirements of WS 523-2019 standards for qualified limits, there are 3 devices with ISL unqualified and the rest of the performances qualified. The new standards basically can meet the clinical requirements and reflected the overall performance of SPECT.Conclusions:The distance between the radiation source and the surface of the detector has great influence on the spatial resolution.In the measurement of ISL, there must be a lead grid separately in the x and y directions. The lead grids with the parallel slits shall be positioned on the detector with the center slit centered on the detector. It is suggested to add rotation center in the new standards.
ABSTRACT
Objective To obtain the information on the frequency of diagnostic X-ray examinations in Guangdong province in order to provide reference data for the rational application of diagnostic radiology.Methods A typical stratified sampling method was used to select 56 medical institutions in 7 districts in Guangdong province for the survey of the frequencies of diagnostic X-ray examinations.Multiple linear regression analysis was performed using the relevant variables of the surveyed sample (total number of hospitals,number of outpatients,number of inpatients,number of radiation workers,and number of diagnostic equipment).The dependent independent variables were fitted to the linear regression equation to estimate the frequency of routine diagnostic X-ray examinations and diagnostic CT examinations and the total frequency of diagnostic medical X-ray examinations in Guangdong province in 2016.Results By the largest percentage contribution,chest radiography accounted for 60.84％ of the routine diagnostic X-ray examinations,brain scans 28.03％ of diagnostic CT examinations,and cardiovascular interventions 48.83％ of interventional radiology.For the group of above 40 years old,the largest percentage contributions were,respectively,routine diagnostic X-ray examination 47.95％,diagnostic CT examinations 65.41％,and interventional radiology 75.64％.All types of medical X-ray examinations are concentrated in the tertiary and secondary hospitals.Based on this survey,the examination frequencies for 2016 in Guangdong were estimated to be,respectively,diagnostic X-ray examination 699 examinations per 1 000 population and CT diagnostic 231 examinations per 1 000 population,with the total of 992 examinations per 1 000 population.Conclusions This survey was completed to a limited degree and less investment.The results showed that the diagnostic radiology in Guangdong province is developing with increased frequencies,with wide varieties of X-ray examination types in the tertiary and secondary hospitals.Relevant competent defpartments should pay attention to strengthening the radiation protection of examined individuals and actively providing guidance on the correct and rational applicc ation of diagnostic radiology so as to achieve profit and avoid disadvantages.
ABSTRACT
Objective To survey the basic situation of diagnosis and treatment in clinical nuclear medicine across Guangdong province,evaluate the risks of exposure to the radiation workers and public and explore the countermeasures to control radiation exposre.Methods A survey team was set up to survey,by filling questionnaires,the basic information on nuclear medicine practices for workers,equipment,radionuclide,frequency and dose to workers and radiation protection measures.Results A total of 71 nuclear medicine institutions was involved in the survey with 733 radiation workers in 2016 in Guangdong.The average annual effective dose to nuclear medicine workers was (0.55±0.66) mSv per year.The total pieces of nuclear medical equipment was up to 189 in 2016 including 59 SPECT/CT scanners (5 SPECT),28 PET/CT scanners and 54 thyroid scanners.Total activity of 1.15× 10s MBq in radiopharmaceuticals was used in 325 903 examinations and treatments with the number of frequency of 2.97 examinations per 1 000 population.Concluions There have been a rapid progress in practice of nuclear medicine over the past 20 years in Guangdong province with departments of nuclear medicine set up in 18 of 21 cities.Compared with 1998,the activity in radiopharmaceuticals used has increased by 414％ in 2016 and the number of frequency of examination and treatment has increased by 111％.The rapid expansion of nuclear medicine practice has also caused potential risks of radiation to the public and environment.
ABSTRACT
Objective To observe the effect ofXing Nao Kai Qiao (awakening brain and opening orifice) needling method on the cognitive and motor function of patients in acute stage of cerebral infarction.Method Sixty-four patients in acute stage of cerebra infarction were recruited and randomized into a trial group and a control group, 32 cases in each group. The control group was intervened by Edaravone 30 mg plus Fibrinogenase injection 200 U mixed in 500 mL 0.9% NaCl via intravenous drip, once a day. The trial group was byXing Nao Kai Qiao needling method in addition to the intervention given to the control group, once a day, 5 times a week. The two groups were both given 2-week successive treatment. At the end of the intervention, clinical efficacy, cognitive function, motor function, nervous function, serum C-reactive protein and NO levels, and adverse reactions of the two groups were compared.Result After the treatment, the Chinese Stroke Scale (CSS) score dropped significantly, Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) score, Barthel Index (BI) score and motor function score of both upper and lower limbs increased significantly in both groups (P<0.05); the total effective rate of the trial group was significantly higher than that of the control group (P<0.05); the CSS score was lower, and LOTCA score, BI score, and motor function scores of both upper and lower limbs were higher in the trial group compared with those in the control group, and the differences were statistically significant (P<0.05); on the 1st, 3rd, 7th and 14th day after the intervention, the serum CRP and NO levels were significantly lower in the trial group compared with those in the control group (P<0.05). There was no significant difference in comparing the adverse reaction incidence between the two groups (P>0.05).Conclusion Xing Nao Kai Qiao needling method can produce a significant efficacy in treating patients in acute stage of cerebral infarction, and it can improve the cognitive, motor and nervous functions with high security.
ABSTRACT
Objective To observe the effect ofXing Nao Kai Qiao (awakening brain and opening orifice) needling method on the cognitive and motor function of patients in acute stage of cerebral infarction.Method Sixty-four patients in acute stage of cerebra infarction were recruited and randomized into a trial group and a control group, 32 cases in each group. The control group was intervened by Edaravone 30 mg plus Fibrinogenase injection 200 U mixed in 500 mL 0.9% NaCl via intravenous drip, once a day. The trial group was byXing Nao Kai Qiao needling method in addition to the intervention given to the control group, once a day, 5 times a week. The two groups were both given 2-week successive treatment. At the end of the intervention, clinical efficacy, cognitive function, motor function, nervous function, serum C-reactive protein and NO levels, and adverse reactions of the two groups were compared.Result After the treatment, the Chinese Stroke Scale (CSS) score dropped significantly, Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) score, Barthel Index (BI) score and motor function score of both upper and lower limbs increased significantly in both groups (P<0.05); the total effective rate of the trial group was significantly higher than that of the control group (P<0.05); the CSS score was lower, and LOTCA score, BI score, and motor function scores of both upper and lower limbs were higher in the trial group compared with those in the control group, and the differences were statistically significant (P<0.05); on the 1st, 3rd, 7th and 14th day after the intervention, the serum CRP and NO levels were significantly lower in the trial group compared with those in the control group (P<0.05). There was no significant difference in comparing the adverse reaction incidence between the two groups (P>0.05).Conclusion Xing Nao Kai Qiao needling method can produce a significant efficacy in treating patients in acute stage of cerebral infarction, and it can improve the cognitive, motor and nervous functions with high security.
ABSTRACT
OBJECTIVE: To understand the general awareness of the residents around a newly built nuclear power,to evaluate the safety and the attitude on the construction of nuclear power. METHODS: By the stratified random sampling method,1 029 general publics and 260 representatives were selected for investigation. The participants were from 30 km range around the nuclear power plant,each 5 km was assigned as 1 layer and there were total 6 layers. RESULTS: 74. 9%( 965 /1 289) interviewees were not aware of nuclear power,3. 1%( 40 /1 289) interviewees were well or very-well understand nuclear power. The awareness score of the general publics was lower than that of the representatives( 1. 0 vs3. 0,P < 0. 01); male,younger people,higher educational level,higher family income,religious people and living close to the nuclear power plant had higher awareness( P < 0. 05). A total of 28. 4%( 366 /1 289) interviewees considered the nuclear power was very safe or safe. The evaluation of nuclear power safety of the general publics was inferior to the representatives( P < 0. 05). The representatives,older people and those living far away from the nuclear power have better evaluation on the nuclear power safety than the general publics( P < 0. 05). Only 13. 0%( 167 /1 289) interviewees supported building the nuclear power in their residence construction; male,people with family members working in nuclear power plant,people with high degree of awareness on nuclear power,considered highly safety of the nuclear power had higher support for the local nuclear power construction( P < 0. 05). The interviewees who mostly believe about nuclear energy sources were experts,government officials,plant management and domestic media. CONCLUSION: Residents around the nuclear power plant had low awareness of the knowledge about nuclear power. Therefore,it is necessary to enhance the awareness of residents on nuclear power and the trust on the government.
ABSTRACT
Objective To identify whether the branches of cervical nerve roots joined into the accessory nerve trunk or not.Methods In 10 adult cadavers (7 males and 3 females, including 20 laterals of brachial plexus nerves), we observe source of cervical plexus branches to the accessory nerve anatomically.In 10 clinical cases of males with brachial plexus nerve injures, in the supraclavicular approach of brachial plexus exploration, the part of the supraclavicular cutaneous nerve for histological specimen were cut off;in the posterior approach, electrical stimulation of the trunk and branches of cervical plexus were performed to observed istaltrapezius muscle contraction.After accessory nerve transfer, the residual terminal accessory nerve and branch of cervical plexus were taked for histological specimens;and observed and judged of each nerve sample by acetylcholinesterase (AchE) immunohistochemical staining.Results In 10 of 20 lateral cases, cervical plexus communicating branches were derived from the fourth cervical nerve root.The intraoperative electrical stimulation of the accessory nerve trunk, 10 cases of distal trapezius muscle were significantly shrink;electrical stimulation of the cervical plexus branch, 2 cases after stimulation of the mild distal trapezius contraction, the remaining 8 cases without trapezius muscle contraction.10 cases of supraclavicular nerve staining for AchE were negative, 10 cases of accessory nerve terminal branches of AchE staining were mixed,10 cases of branch AchE cervical plexus to the accessory nerve staining were negative.Conclusion The branches of the fourth cervical nerve root constantly joins into the accessory nerve, participating in the trapezius muscle inner vation, the fibers of the branches are sensorial fibers.