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1. The characteristics of internal jugular vein sonographic imaging in patients with cerebral venous sinus thrombosis | |||
JIA Lingyun,HUA Yang,JI Xunming,Liu Jiangtao | |||
Clinical Medicine 15 July 2014 | |||
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Abstract:Background Cerebral venous sinus thrombosis (CVST) is a special form of stroke with multiple causes and risk factors. However, there are still a portion of cases with unknown reasons. The aim of this study was to investigate the relationship between internal jugular vein (IJV) abnormalities and the development of cerebral venous sinus thrombosis (CVST). Methods A total of 51 CVST patients and 30 healthy controls were enrolled. The diameter, the maximum velocity (Vmax) and the reflux time in bilateral IJVs were measured by color Doppler flow imaging (CDFI). Results Among the 51 CVST patients, 20 (39.2%) patients were with normal IJV and 31 (60.8%) patients were with abnormal IJV. The types of IJV abnormality included annulus stenosis 19 cases (61.3%), hypoplasia 9 cases (29.0%), thrombosis 2 cases (6.5%) and anomalous valve 1 case (3.2%). In patients with unilateral IJV abnormality, the minimum diameter of the IJV on the lesion side was significantly smaller than that of the contralateral side (P<0.0001). When compared with contralateral side, the Vmax of the lesion side with unilateral annulus stenosis was significant higher, however, it was obvious lower in patients with unilateral hypoplasia (P<0.05). Furthermore, among 27 cases with unilateral IJV abnormality, all the CVST occurred on the same side on that the IJV was with lesion. Conclusions IJV abnormality closely correlated with the development of CVST, which is a newly identified risk factor for CVST. | |||
TO cite this article:JIA Lingyun,HUA Yang,JI Xunming, et al. The characteristics of internal jugular vein sonographic imaging in patients with cerebral venous sinus thrombosis[OL].[15 July 2014] http://en.paper.edu.cn/en_releasepaper/content/4604202 |
2. Changes of Radiofrequency Ablation Coagulation Region during Real-time Temperature Monitoring by using Transparent Tissue-mimicking Phantom | |||
HUANG Ying,LIU Da,JIANG Luo | |||
Clinical Medicine 29 October 2012 | |||
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Abstract:Objective To evaluate the changes of radiofrequency ablation coagulation region during real-time temperature monitoring by using transparent tissue-mimicking phantom contained polyacrylamide gel. Materials and Methods A new urethra temperature monitoring catheter was manufactured with thermal mini-sensors. Put the urethra temperature monitoring catheter into the phantom made of polyacrylamide gel and bovine serum albumin. The phantom prepared with citrate buffer was used as temperature sensitive indicator. An electrode was inserted into the phantom vertically, 1 cm away from the temperature monitoring catheter. The parameters of coagulation lesions including the shapes, sizes, volumes and decenter ratios were evaluated by MRI imaging. Results The coagulation region showing low signal region in the T2 image was clearer than high signal region showed in T1 image. Comparing to without temperature monitoring, the smaller coagulation region was observed during temperature monitoring. In addition, from the decenter ratios, the coagulation region seemed departed away from the electrode. Conclusions The real-time temperature monitoring during radiofrequency ablation could affect the parameters of coagulation lesions including the shapes, sizes, volumes and decenter ratios. | |||
TO cite this article:HUANG Ying,LIU Da,JIANG Luo. Changes of Radiofrequency Ablation Coagulation Region during Real-time Temperature Monitoring by using Transparent Tissue-mimicking Phantom[OL].[29 October 2012] http://en.paper.edu.cn/en_releasepaper/content/4492502 |
3. Uterine leiomyosarcoma misdiagnosis as leiomyomatosis by sonography: case reports and review of the literature | |||
HUANG Ying,Liu Da,JIANG Luo | |||
Clinical Medicine 24 October 2012 | |||
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Abstract:Objective-- Leiomyosarcoma is one of the three most common histological variants of uterine sarcoma. A high index of suspicion is needed in the diagnosis of this rare but highly fatal tumor. The aim of this retrospective study was to discuss the misdiagnosis of sonography in distinguishing LM from LMS, and to describe the rare sonographic features of LMS. Materials and Methods-- All patients had undergone transvaginal and or transabdominal ultrasound examination before histopathological examination. We analyzed the preoperative gray-scale and color Doppler sonographic findings of 2 patients. Number, size, echotexture, degenerative changes, and vascularity (central or peripheral; absent, mild, moderate, or marked) were recorded. All patients underwent laparotomy. Results--They were found to have uterine malignancies and these were confirmed to be leiomyosarcoma after pathologic examination. About our 2 cases, one without degenerative cystic changes and the other with calcification which were not consistent with a majority of LMSs sonography. In addition, the vascularity showed in the whole mass had not a marked increase. Conclusions-The findings of the present study suggest that when uncharacteristic sonography of LMSs were observed, more effort should be directed at ruling out uterine sarcoma in all patients with presumptive diagnosis of leiomyoma, more especially if they are postmenopausal. | |||
TO cite this article:HUANG Ying,Liu Da,JIANG Luo. Uterine leiomyosarcoma misdiagnosis as leiomyomatosis by sonography: case reports and review of the literature[OL].[24 October 2012] http://en.paper.edu.cn/en_releasepaper/content/4492493 |
4. Differential evolution patterns in brain temperature in different ischemic tissues in Monkey Middle Cerebral Artery Occlusion Model | |||
SUN Zhihua,Zhang Jing,CHEN Yingmin,ZHANG Xuejun,ZHANG Yunting,GUO Hong,YU Chunshui | |||
Clinical Medicine 01 June 2012 | |||
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Abstract:Objectives: Brain temperature was elevated in acute ischemic stroke, especially in ischemic penumbra (IP). We try to investigate the dynamic evolution of brain temperature in different ischemic regions in monkey models. Methods: The middle cerebral artery occlusion (MCAO) and recanalization model was successfully established in 4 monkeys. Brain temperature of different ischemic regions was measured by Proton magnetic resonance spectroscopy (1H MRS), and then the evolution processes of brain temperature were compared among different ischemic regions. Results: The normal (baseline) brain temperature of monkey brain was 37.16℃. At artery occlusion stage, the mean brain temperature of ischemic tissue was 1.16℃higher than that of the baseline, however, this increase is region-dependent with 1.72℃ in IP, 1.08℃ in infarct core and 0.62℃ in oligemia region. After recanalization, the brain temperature of infarct core showed a pattern of an initially decrease accompanied by a following increase. However, the brain temperature of IP and oligemia region showed a monotonously and slowly decreased pattern. Conclusion: The infarct core and IP have different evolution patterns of brain temperature, which suggests that in vivo measurement of brain temperature could be help to identify whether ischemic tissue is survival. | |||
TO cite this article:SUN Zhihua,Zhang Jing,CHEN Yingmin, et al. Differential evolution patterns in brain temperature in different ischemic tissues in Monkey Middle Cerebral Artery Occlusion Model[OL].[ 1 June 2012] http://en.paper.edu.cn/en_releasepaper/content/4480417 |
5. The physiological model of functional CT imaging | |||
Qian Ying,Zhang Yang | |||
Clinical Medicine 04 January 2011 | |||
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Abstract:The appearance of CT is a result which is combined with traditional X-ray and computer technology.It has been applied in clinical medicine for three decades years, marking the imaging technology into a new phase.With the further development of CT technology, the disadvantage of traditional CT is appeared because it can only provide structural information. Therefore, over the past ten years, the development of fast CT scanning has prompted functional CT as a technology that is diagnosed in the blood kinetics of human tissue. The technology is based on creating physiological model. At present, the physiological model of functional CT imaging is divided into compartmental models and distributed parameter models. Compartmental models include one-compartmental model and two-compartmental model and distributed parameter models include Johnson-Wilson model, ATH model and DCATH model. | |||
TO cite this article:Qian Ying,Zhang Yang. The physiological model of functional CT imaging[OL].[ 4 January 2011] http://en.paper.edu.cn/en_releasepaper/content/4403012 |
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