1.The Therapy of Arterial-cathetered Perfusion for Chronic Bacillary Prostatitis
Chunchao TANG ; Chaoyi LIANG ; Shu MIAO ; Ying LONG
Journal of Practical Radiology 2001;0(01):-
Objective To find a new therapy for chronic bacillary prostatitis (CBP) with intervention. Methods According to Seldinger way, the catheter was inserted into internal iliac artery or inferior vesical artery percutaneously and was perfused medicine. Results Of which 10 cases recovered and 2 increasingly improved. And there was no positive prostate bacterial culture. But after 3 to 6 month survey, one patient relapse. Conclusion The arterial-cathertered perfusion is a safe, simple and low recurrence way for CBP and available to further study.
2.Application of image-reading combined with problem-based learning in continuing education of radiographer
Guoyong CHEN ; Hehan TANG ; Yuan YUAN ; Chunchao XIA ; Xuelin PAN ; Zhenlin LI
Chinese Journal of Medical Education Research 2022;21(9):1237-1239
The Department of Radiology of West China Hospital of Sichuan University provides us a teaching model that image-reading combined with problem-based learning (PBL) for radiographer once a month. Based on the problem images and typical cases, after careful image-reading, radiographer is guided to think positively and propose specific solutions to the problems. Then designated personnel gives a detail lecture on related diseases, imaging performance, diagnostic requirements, conventional scanning schemes, operating specifications, common problems and image post-processing, etc., which aims at taking continuing education for radiographers.
3.Accelerated Time-of-Flight Magnetic Resonance Angiography with Sparse Undersampling and Iterative Reconstruction for the Evaluation of Intracranial Arteries
Hehan TANG ; Na HU ; Yuan YUAN ; Chunchao XIA ; Xiumin LIU ; Panli ZUO ; Aurelien F STALDER ; Michaela SCHMIDT ; Xiaoyue ZHOU ; Bin SONG ; Jiayu SUN
Korean Journal of Radiology 2019;20(2):265-274
OBJECTIVE: To compare the image quality of three-dimensional time-of-flight (TOF) magnetic resonance angiography (MRA) with sparse undersampling and iterative reconstruction (sparse TOF) with that of conventional TOF MRA. MATERIALS AND METHODS: This study included 56 patients who had undergone sparse TOF MRA for intracranial artery evaluation on a 3T MR scanner. Conventional TOF MRA scans were also acquired from 29 patients with matched acquisition times and another 27 patients with matched scanning parameters. The image quality was scored using a five-point scale based on the delineation of arterial vessel segments, artifacts, overall vessel visualization, and overall image quality by two radiologists independently, and the data were analyzed using the non-parametric Wilcoxon signed-rank test. Contrast ratios (CRs) of vessels were compared using the paired t test. Interobserver agreement was calculated using the kappa test. RESULTS: Compared with conventional TOF at the same spatial resolution, sparse TOF with an acceleration factor of 3.5 could reduce acquisition time by 40% and showed comparable image quality. In addition, when compared with conventional TOF with the same acquisition time, sparse TOF with an acceleration factor of 5 could also achieve higher spatial resolution, better delineation of vessel segments, fewer artifacts, higher image quality, and a higher CR (p < 0.05). Good-to-excellent interobserver agreement (κ: 0.65–1.00) was obtained between the two radiologists. CONCLUSION: Compared with conventional TOF, sparse TOF can achieve equivalent image quality in a reduced duration. Furthermore, using the same acquisition time, sparse TOF could improve the delineation of vessels and decrease image artifacts.
Acceleration
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Arteries
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Artifacts
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Humans
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Magnetic Resonance Angiography
4.Multiple rapid-responsive probes for hypochlorite detection based on dioxetane luminophore derivatives
Sun YINGAI ; Gao YUQI ; Tang CHUNCHAO ; Dong GAOPAN ; Zhao PEI ; Peng DUNQUAN ; Wang TIANTIAN ; Du LUPEI ; Li MINYONG
Journal of Pharmaceutical Analysis 2022;12(3):446-452
In recent years,various methods for detecting exogenous and endogenous hypochlorite have been studied,considering its essential role as a biomolecule.However,the existing technologies still pose obstacles such as their invasiveness,high costs,and complicated operation.In the current study,we developed a glow-type chemiluminescent probe,hypochlorite chemiluminescence probe(HCCL)-1,based on the scaffold of Schaap's 1,2-dioxetane luminophores.To better explore the physiological and pathological functions of hypochlorite,we modified the luminophore scaffold of HCCL-1 to develop several probes,including HCCL-2,HCCL-3,and HCCL-4,which amplify the response signal of hypo-chlorite.By comparing the luminescent intensities of the four probes using the IVIS? system,we determined that HCCL-2 with a limit of detection of 0.166 μM has enhanced sensitivity and selectivity for tracking hypochlorite both in vitro and in vivo.