Objective To report the progression of breviscapine's protective effect to hepatic ischemia-reperfusion injury.Methods Pertinent literatures and journal articles published in recent years were reviewed,and the progression of breviscapine protecting hepatic ischemia-reperfusion injury in the experimental and clinical research were analyzed and summarized.Results The role of breviscapine is considerable extensive.It can protect hepatic ischemia-reperfusion injury by anti-oxyradical and anti-lipid peroxidation,inhibiting mitochondrial damage,intracellular calcium overload,intra-thromboxane and apoptosis,improving microcirculation,and so on.Conclusion Breviscapine plays a protective role in hepatic ischemia-reperfusion injury,and it will be of great value to application and research.

Objective To observe the application of low dose CT scanning in lung puncture biopsy,and to discuss the feasibility and limitations.Methods 100 cases of CT guided percutaneous lung biopsy,used SPSS soft-ware to generate random numbers,odd number into the routine dose group,even number into low doses study group. The routine dose group of 50 patients underwent routine dose CT scanning(200mA,reconstruction thickness 2.0mm, pitch 16mm/rot)and puncture,and the low doses study group were given low dose CT scanning in 50 patients (10mA,reconstruction thickness 2.0mm,pitch 23mm/rot)and puncture.Two groups after routine disinfection punc-ture,were taken tissue samples for pathological examination.The two groups of CT scanning dose and image quality, the success rate of puncture and complications were compared.Results The success rate of puncture in conventional dose scan group was 90.00%;CT dose index weighted index CTDIw was (23.64 ±5.91)mGy;the average dose length product DLP was (172.31 ±43.08)mgy ×cm.The success rate of puncture of the low doses study group was 84.00%;CTDIw was (1.22 ±0.31)mgy;DLP was (8.56 ±2.14)mgy ×cm.The successful puncture rate of the two groups had no significant difference(χ2 =0.638 9,P=0.374 2);The radiation dose was statistically significant(CTDIw compare:t=2.798 3,P=0.005 4;DLP compare:t=2.684 9,P=0.007 8);The image quality can meet the need of puncture biopsy;At the same time,the two groups had no severe complications.Conclusion Low dose than routine dose CT scanning in lung biopsy success rate has no difference,but which can significantly reduce the radiation dose.

Combined with the development requirements of hospital medical disposable materials management and hospital information management,introduced a novel medical disposable materials management pattern which base on the enterprise resource planning chain supply systems.By optimizing purchasing procedure,inventory management,precision financial management,to realize the integrated management of the medical consumable materials affairs and financial affairs.

Objective By estimation and analysis of imaging characteristics of "dry"and "wet" laser print to appreciate the imaging quality of two different printing ways and its advantages and disadvantages respectively.Methods ①28 routine MRI and 28 routine CT images were selected,the imaging quality of MR and CT images including brightness,contrast,detail display,diagnostic performance and general impression were evaluated by 6 radiologists;②CT and MR images of skull,lumbus,knee and hand joint adjusted to the best states, then printed by "dry" and "wet" laser printer;③The sensitive characteristic curve both "dry" and "wet" printing were made with opital densimeter,SMPTE card,then an objective evaluation of stabilization was done.Results ①The imaging quality for the dry imaging possess in 56 cases,the much worse was 0.3%,the best was none,the slightly worse,medial and slightly better was 31.9%,58.9% and 8.9% respectively;②The maximum density of the dry film and the wet film was 3.34 and 3.62 respectively,the dynamic range of the latter was more wide than that of former;③The wet films exposed to temperatures from 40℃ to 100℃,did not show a noticeable alteration in optical density,but the dry film showed gray scale degradation at temperatures above 70℃.Conclusion In imaging quality,stability of film,brightness and contrast of film,"wet" laser film is better than that of "dry" laser film,but "dry"laser film has still good diagnostic function that can be used in clinical diagnosis.

Objective To evaluate the application of latitude reduction technique in CR image processing based on different tissuethickness of foot radiography.Methods The images of adult foot radiography in 50 cases were analysed retrospectively.Latitude reduction technique was used in comparison with routine CR image processing,in order to display different tissue position definition such as soft tissue in phalanges of toes,thumb nail groove,the distal of fifth phalanges,talus bone trabecula and calcaneocuboidal joint space.Results CR image processed by latitude reduction technique could showe clearly tissue and structure of foot and was super than that of routine CR image processing.(t=7.732,P

As a tumor thermal ablation technology in cancer therapy, HIFU (High Intensity Focused Ultrasound) has been developed rapidly in recent years. With the technology becoming more and more mature, it's clinical application is becoming more and more widely. In HIFU therapy, the high-intensity ultrasound energy is focused in the target tumor tissue, generating heat within very short time, causing coagulation necrosis, so that the effect of the treatment is achieved. To ensure safe and therapeutic efficacy, HIFU therapy needs to be properly monitored by medical imaging, and temperature in the target has to be precisely measured, this article is based on the current domestic and foreign detection methods of the focal region temperature.
Diagnostic Imaging ; High-Intensity Focused Ultrasound Ablation ; Humans ; Neoplasms ; therapy ; Temperature ; Ultrasonic Therapy

Objective To study the cumulative radiation dose of multiple trauma patients during their hospitalization and to analyze the dose influece factors.Methods The DLP for CT and DR were retrospectively collected from the patients during June,2009 and April,2011 at a university affiliated hospital.The cumulative radiation doses were calculated by summing typical effective doses of the anatomic regions scanned.Results The cumulative radiation doses of 113 patients were collected.The maximum,minimum and the mean values of cumulative effective doses were 153.3,16.48 mSv and(52.3 ± 26.6) mSv.Conclusions Multiple trauma patients have high cumulative radiation exposure.Therefore,the management of cumulative radiation doses should be enhanced.To establish the individualized radiation exposure archives will be helpful for the clinicians and technicians to make decision wheather to image again and how to select the imaging parameters.

Objective To evaluate the equipment scheme and value of computed radiography (CR) in the fever outpatient department.Methods One scanner of two sets of CR system was placed to the fever outpatient department for obtaining digital images. Those images and relative clinical data were transited to department of radiology by radiological information system (RIS). Then radiologists finished the diagnostic reports and ordered the printer in the fever outpatient department to print after a necessary post-process and analysis for obtained images.Results (1) Only one radiological technician was need to work in the fever outpatient department; (2) The images could preview in 55 seconds and received chest X-ray report in 15 ～ 30 minutes after exposure.Conclusion This project adapts to routine chest X-ray of patients in the fever outpatient department because of preventing contagion and high efficiency.

Objective To investigate the radiation doses for the patients undergoing interventional radiology and to analyze the dose - influencing factors.MethodsThe clinical data of 461 patients undergoing interventional radiology,including cerebral angiography ( CEA ),cerebral aneurysm embolism ( CAE ),superselective hepatic arterial chemoembolization ( SHAG ),coronary angiography ( COA ),percutaneous intracoronary stent implantation ( PIS1 ),cardiac radiofrequency catheter ablation ( RFCA ),and permanent cardiac pacemaker implantation(PCPI) were collected to observe the cumulative air kerma (CAK),dose area product (DAP),and fluoroscopy time,and effective dose was estimated using the conversion factors.Results The effective doses for CEA,CAE,SHAG,COA,PISI,RFCA,and PCPI were (0.33 ±0.20),(0.49 ±0.35),(6.92 ±4.19),(0.76 ±0.91),(2.35 ± 1.47),(0.50 ±0.74),and (0.67 ±0.70) Sv,respectively.In 126 of the 416 patients (26%),the effective doses were greater than 1 Sv,and the effective doses of 10 person-times were greater than 10 Sv,all of which were observed in the patients undergoing SHAG.The CAK values for CEA,CAE,SHAG,COA,PISI,RFCA,and PCPIwere (0.55 ±0.43),(1.34 ± 1.11),(0.95 ±0.57),(0.32 ±0.31),(0.91 ±0.33),(0.16 ±0.22),and (0.15 ±0.14) Gy,respectively.The CAK values were greater than 1 Gy in 59 of the 461 patients ( 12.8% ),greater than 2 Gy in 11 cases (2.4%) ,and greater than 3 Gy in 1 CEA cases and 1 CEA case,respectively.Conclusions There is a wide variation range in radiation dose for different procedures.As most interventional radiology procedure can result in clinically significant radiation dose to the patient,stricter dose control should be carried out.

Objective To investigate the reproducibility and influencing factors of relative quantification of phosphorus metabolites with two-dimensional chemical shift imaging (2D CSI) in rabbit liver. Methods Using 2D CSI MRS, 500 ml phosphate (NaH2PO4) solution phantom with 0. 05 mol/E concentration and one healthy rabbit were scanned 30 times respectively in one day and rescanned 30 times in the next day, and the stability of MR scanner and reproducibility of within-run and between-days in the same individual were analyzed. Each of thirty rabbits was scanned and rescanned one time respectively in different days, and the reproducibility of between-days in one group was analyzed. The data were statistically analyzed with t tests. Results (1) Phosphate solution phantom had a good reproducibility of within-run with the coefficient variation (CV) of 4. 92% and 5. 12% respectively in different two days. No significant change of phosphorus metabolites was detected in between-days, which was 16. 68 ± 0. 82 and 16. 56 ± 0. 85 respectively(t = 0. 665, P > 0. 05 ). (2) The CV of metabolites in one healthy rabbit ranged from 8. 04% to 34. 13%. Among the metabolites, β-ATP had the best reproducibility with the CV less than 10%. PME was 0. 88 ± 0. 28 and 0. 88 ± 0. 30, PDE was 4. 35 ± 0. 66 and 4. 35 ± 0, 66, Pi was 0. 95 ± 0.30 and 0.97±0.28, α-ATP was 5.58±0.60 and 5.61±0.61, β-ATP was 2.70±0.22 and 2.71± 0. 22, γ-ATP was 2. 20±0. 63 and 2. 18±0.44 respectively, no significant changes of metabolites were detected in between-days( P >0. 05 ). (3) The CV of metabolites in 30 healthy rabbits ranged from 8.48% to 36. 21%. Among the metabelites, β-ATP had the best reproducibility with CV less than 10%. PME was 0. 84 ± 0. 30 and 0. 79 ± 0. 28, PDE was 4. 29 ± 0.72 and 3.94 ± 0. 84, Pi was 0. 91 ± 0. 28 and 0. 92 ± 0. 31, α-ATP was 5.65±0. 66 and 5. 36±0. 60, β-ATP was 2. 71±0. 23 and 2. 66±0. 25, γ-ATP was 2. 07±0. 29 and 1.99±0. 37 respectively, no significant changes of metabolites were detected in between-days (P > 0. 05). Conclusions The relative quantification of hepatic β-ATP may be most reliable among the phosphorus metabolites for rabbit liver because of its good reproducibility and small CV. The quantification of phosphorus metabolites by 31p MRS with 2D CSI in rabbit liver is affected by many factors.