Objective To evaluate the safety of CT guided percutaneous lung biopsy in the elderly,and to analyze the risk factors for its complications.Methods Totally 204 elderly patients aged ≥65 years underwent transthoracic needle biopsy under CT guidance.Clinical data,complication and its risk factors were analyzed retrospectively.Results The complications included pneumothorax accounting for 15.2％ (31/204),hemoptysis 21.6％ (44/204),and no mortality was found.Logistic regression analysis showed that needle path ≥5.00 cm,lesion size ≤2.00 cm and emphysema around the lesion were the independent risk factors for postoperative pneumothorax (OR=4.05,2.54 and 3.97,all P＜0.05).Meanwhile,the enhancement degree by CT ＞40 HU,needle path ≥5.00 cm and lesion size ≤2.00 cm were the independent risk factors for postoperative bleeding (OR=2.27,2.82 and 2.33,all P＜0.05) in elderly patients undergoing lung biopsy.The sensitivity and specificity for postoperative pneumothorax and bleeding obtained by forecasting equation were 87.1％ and 49.1％,54.5％ and 80.8％ respectively.Conclusions The length of needle path,lesion size and emphysema around the lesion are correlated with pneumothroax,and length of needle path,lesion size and the CT enhancement degree are correlated with bleeding after percutaneous lung biopsy in the elderly.

Objectives: To study the executive function (EF) profiles in children with ADHD. Methods: 1.We used some neuropsychological tests,including Stroop test, visual and auditory Go/No-Go tasks, digits reciting inverse, delayed spacial position memory span test, tower of London (TOL), tail making test (TMT),to evaluate the capacity of response inhibition, phonological working memory, visual-spacial working memory, planning and set-shifting of subjects. Results: 1.The ADHD children spent more time to accomplish color naming when the word color was inconsistent with the word meaning than normal control (NC) in Stroop test(p﹤0.05). 2.The ADHD children made more errors than NC in both visual and auditory Go/No-Go test(p﹤0.01). 3.The scores of digits reciting inverse was lower in ADHD than NC(p﹤0.01). 4.The representation of ADHD was poorer than NC in delayed spacial position memory span test(p﹤0.01). 5. In TOL test, the ADHD children spent more time in all of two-move, four-move and five-move tasks than NC, and broke rules more frequently than NC(p﹤0.05). 6.In TMT, the ADHD children spent more time and made more errors on part B than NC(p﹤0.05), and there was no significant difference on part A (p﹥0.05). Conclusions: The obvious impaired executive functions are found in children with ADHD, involving poor response inhibition,impaired working memory, dysfunction of planning and set-shifting.

In this study, the implementation methods for the several functions are explored on RayStation 4.0 Platform. Those functions are passing the information such as ROI names to a plan prescription Word file. passing the file to RayStation for plan evaluation; passing the evaluation result to form an evaluated report file. The result shows the RayStation scripts can exchange data with Word, as well as control the running of Word and the content of a Word file. Consequently, it's feasible for scripts to inactive with third party softwares upgrade the performance of RayStation itself.
Radiotherapy Planning, Computer-Assisted ; Software

Objective:To assess the life quality of the patients with tongue cancer after operation.Methods:80 cases of tongue cancer following surgery during 1994 to 1998 were reviewed with questionaire.Scords of University of Washington Quality o f Life (UW-QOL) were analysed to evaluate their life quality.Results:(1) 3-year survival rate was 72.5%,higher survival rate was observed in the patients with I and II stage lesion than those with Ⅲ and Ⅳ stages.(2) 58 cases of survivers had UW-QOL average score of 618. Some patients had serious disability in mastication, swallowing,speaking and shoulder movement.(3)Patients retaining mandible or with skin flap repair had higher quality of life than the others.Conclusion:Following surgery,tongue cancer patients still maintain comparatively high quality of life.Reconstruction of mandibular or tongue is very importent for the life quality of the patients.

Objective To investigate the expression of angiotensinⅡ (Ang Ⅱ ) and its type 1 receptor (AT1) in circulation, placenta and kidney of the rots preeclampsia. Methods Preedampsia rat model was developed by inhibitor of nitric oxide synthase (L-NAME). The systolic blood pressure (SBP), 24 h urine protein, hepatic and renal function were compared among the precelampsia group, the normal pregnant group and nonpregnant control group. The kidney tissue was observed by light microscopy. ELISA and radioimmunoassay were used to detect Ang Ⅱ in rat plasma and kidney homogenate respectively. Placental AT1 was measured by Westem blot. The level of kidney AT1 was evaluated by immunohistochemistry and Western blot. Results In preeclampsia rats, SBP and 24 h urine protein were significantly higher compared with control groups. Compared to normal pregnant group, plasma Ang Ⅱ of preeclampsia rats was much higher [(0.706±0.086) ng/L vs (0.540±0.085) ng/L, P＜0.05]; placental AT1 was increased by 46%(P＜ 0.05); kidney Ang Ⅱ was decreased signigicantly [(65.543±40.634) ng/g vs (165.543±33.078) ng/g, P＜0.05]. The expression of ATI in kidney of preeclampsia rats was reduced evidently,which was only 33% of normal pregnancy group and 59% of nonpregnant control greup,respeetively (P＜0.05). Conclusions In preeclampsia rat model, the circulating Ang Ⅱ is increased, the placental RAS isactivated, while the kidney BAS is suppressed. The underlying mechanism of proteinuria and kidney damage associated with this phenomenon in preeclampsia needs further research.

Objective To control the image quality and to optimize the scan protocols of 64 multi-slice CT coronary imaging by analyzing factors that influence the image quality.Methods Seventy-eight patients with known or suspected CAD underwent CT coronary angiography using 64 multi-slice CT.The image quality in those cases was analyzed retrospectively to derive the optimized scan protocols.The application value of the override function was discussed.The dependency of cardiac reconstruction algorithms and corresponding image quality on patient heart rates was analyzed.In addition,the relationship between heart rate and the contrast-enhancement effect was studied.Results(1)Correct use of override function could improve the quality of cardiac images.(2)For patients with heart rates below 70 beats per minute,the image quality of single-segment reconstruction was satisfactory.For patients with heart rates between 70 and 79 beats per minute,the scores of images reconstructed with two-segments were better than that of single-segment reconstruction.(3)In the group with averaged heart rate of 60.7 beats per minute,the forecast contrast quantity of 70 ml was judged insufficient in 65.7%(23/35)cases;while for the group with averaged heart of 71.1 beats per minute,52.9%(18/34)cases were enhanced well.Conclusion The use of override function,correct segment mode and appropriate contrast quantity could be selected according to the heart rate,which could improve the image quality and reliability.

OBJECTIVETo investigate the clinicopathological features and the differential diagnosis of poroma and porocarcinoma.

METHODSHistopathological characteristics and clinical data of 35 cases of poroma and 10 cases of porocarcinoma were analyzed retrospectively.

RESULTSThe average age of 35 patients of poroma was 48 years. The average age of 10 patients of porocarcinoma was 65 years. Both poroma and porocarcinoma occured most frequently on the scalp and face,as well as the extremities. Histologically, cases of poroma were divided into three subtypes, including classic poroma (23 cases), hidroacanthoma simplex (3 cases) and dermal duct tumor (9 cases). Residual foci of benign poroma were found in all cases of porocarcinoma, most of which were classic poroma. The malignant components showed severe dysplasia and/or stromal infiltration.

CONCLUSIONThe diagnosis of poroma and porocarcinoma is mainly based on the microscopic characteristics. An invasive architectural pattern and/or significant cytologic pleomorphism are the most important clues for the diagnosis of porocarcinoma. Neither focal mitotic activity nor the presence of necrosis was the diagnostic feature of porocarcinoma. Malignant transformation can occur in some cases of long existing poroma with recent, rapid tumor enlargement.

Aged ; Cell Transformation, Neoplastic ; Diagnosis, Differential ; Eccrine Porocarcinoma ; pathology ; Extremities ; Head and Neck Neoplasms ; pathology ; Humans ; Middle Aged ; Poroma ; pathology ; Retrospective Studies ; Scalp ; Skin Neoplasms ; pathology ; Sweat Gland Neoplasms ; pathology

Objective To survey the current situation of core competence and job burnout for nursing professional teachers in college and to analyze the correlation between them.Methods 210 nursing teachers from 16 colleges and universities were investigated with the core competence evaluation questionnaire for nursing professional teachers and Chinese Maslach Burnout Inventory (CMBI).Results The mean score of core competence for college nursing professional teachers was (2.67±0.79) points,which was at the middle low level.The overall level of job burnout for college nursing professional teachers was between none and moderate.There was significant positive correlation between job burnout and core competence,the leadership competence,problem solving competence,professional competence,teaching competence.Conclusions The job burnout level for nursing professional teachers in college is lower than the moderate level.The core competence increases with the increase of job burnout level.Making mild stress for teacher and keeping the job burnout at mild-moderate level can improve the core competence of nursing teachers in College

Objective To investigate the CT spectral imaging features of pancreatic serous oligocystic adenoma and mucinous cystic neoplasms and to assess the value of spectral CT in differentiating between pancreatic serous oligocystic adenoma and mucinous cystic neoplasms. Methods From Feb.2010 to Dec. 2010, 27 patients with cystic neoplasms of the pancreas (group one with 15 serous oligocystic adenomas and group two with 12 mucinous cystic neoplasms) underwent dual-phase CT spectral imaging followed by surgery. Quantitative values (age, tumor size, CT value change as function of photon energy,effective-Z, iodine-water concentration, and calcium-water concentration) were compared with independent samples t test and Mann-Whitney test and non-quantitative parameters (gender, symptom, and tumor location) were compared with Chi-square test (Fisher exact). The parameters with significant differences between two groups were analyzed further and the performance of multiple parameters for joint differential diagnosis was evaluated with discriminant analysis. Results Compared to patients with mucinous cystic neoplasms, patients with serous oligocystic adenoma had younger age, lower frequency of being symptomatic and smaller tumor size. The CT values on 40 keV to 60 keV( with 10 keV increment) in late arterial phase [(36±13)HU vs. (62±23)HU, (26 ±8)HU vs. (40±15)HU, and (19±6)HU vs. (27±10)HU respectively] and 40 keV to 50 keV (with 10 keV increment) in portal venous phase [ (43 ± 14 )HU vs.(61 ±25)HU and (30 -10)HU vs. (40 ± 16)HU respectively], effective-Z (late arterial phase 7.80 ± 0. 16 vs. 8.05 ± 0. 21, and portal venous phase 7. 87 ± 0. 15 vs 8.02 ± 0. 22 ), concentration of calcium (water) [late arterial phase (5 ±3) g/L vs. (11 ±4) g/L, t= -3.836, P=0.001 and portal venous phase (7 ± 3 ) g/L vs. ( 10 ± 5 ) g/L, t = - 2.071, P = 0. 049 ] and iodine (water) [ late arterial phase (0.38 ±0.24) g/L vs. (0.78 ±0.32) g/L, t = -3.755, P=0.001 and portal venous phase (0.48 ± 0. 24) g/L vs. (0. 72 ± 0. 34 ) g/L, t = - 2. 161, P = 0. 041 ] were lower in serous oligocystic adenoma than those in mucinous cystic neoplasms. In discriminant analysis, multiple parameters [ age, symptom,tumor size, CT values on 40 keV to 50 keV, effective-Z, concentration of iodine (water) in late arterial phase and concentration of calcium (water) in portal venous phase] showed high accuracy (100%, 27/27 )of joint diagnosis between serous oligocystic adenoma (100%, 15/15 ) and mucinous cystic neoplasms (100%, 12/12). Conclusions The serous oligocystic adenoma and mucinous cystic neoplasms had distinct characteristic findings on CT spectral imaging. CT spectral imaging is highly accurate in the differential diagnosis between serous oligocystic adenoma and mucinous cystic neoplasms.

A total of 30 cats were used in this experiment.The nucleus raphe magnus wasinjected with 0.1～0.3?l of 25～50% HRP solution(RZ:2.4～3.1).Two or three daysafter operation,the animals were killed and then perfused with the fixing fluid.Thebrainstem and spinal cord were sectioned serially on a freezing microtome and treatedaccording to the method of retrograde axonal transport of horseradish peroxidase.Parts of the sections were counterstained with toloidine-blue.The labelled neuronswere examined microscopically under bright-field and dark-field illumination Thelabelled neurons were distributed as follows.After injections of nucleus raphe magnus,a few labelled neurons were foundin the medial part of parafascicular nucleus of the thalamus.A greater numbers oflabelled cells were consistently found in the ventrolateral area of the central greymatter of the midbrain.The dorsal nucleus of the midbrain raphe had a few labelled neurons.The HRPpositive neurons were found in the nucleus Darkschewitsch,mesencephalic reticularformation,nucleus reticularis gigantocellularis,nucleus reticularis paramedianus,nucleus vestibularis medialis and nucleus vestibularis lateralis.In some cases a fewlabelled cells were also seen in the posterior area of hypothalamus,nucleus posteriorcommissure,nucleus tegmentalis dorsalis,superior collicus,nucleus annularis,reticularformation of the pons,nucleus nervi facialis and nucleus gracilis.In summary,the present studies show that the afferent connections of nucleusraphe magnus are widely concerned with the structures of the pain control.Itsuggests that the nucleus raphe magnus is an important relay station for pain control.