Relationship between job satisfaction and work engagement in Chinese kindergarten teachers: Vocational delay of gratification as a mediator.

Job satisfaction as a positive job-related emotional state affects teachers' work engagement. This study explored the relationship between job satisfaction and work engagement in kindergarten teachers and the mediating role of vocational delay of gratification. Six hundred and eleven kindergarten teachers from China were surveyed with the Job Satisfaction Scale, Work Engagement Scale, and Vocational Delay of Gratification Scale. Results showed that kindergarten teachers' job satisfaction and vocational delay of gratification were positively correlated with work engagement, and vocational delay of gratification played a mediating role between job satisfaction and work engagement. Results of the relationship among job satisfaction, vocational delay of gratification, and work engagement were discussed considering the background of Chinese culture.

Analysis of the clinical value of multi-slice spiral computed tomography (MSCT), magnetic resonance imaging (MRI) and ultrasound (US) in the diagnosis of retroperitoneal tumors.

BACKGROUND: To compare the differences in the diagnosis of retroperitoneal tumors among multi-slice spiral computed tomography (MSCT), magnetic resonance imaging (MRI), and ultrasound (US). METHODS: Sixty cases of retroperitoneal tumors admitted in our hospital from January 2016 to January 2019 were collected and related data were analyzed. After admission, patients were examined by MSCT, MRI, and US, and the pathological results of the patients were used as the controls. The differences in the diagnosis of retroperitoneal tumors were compared with the results of MSCT, MRI, and US. RESULTS: Thirteen cases of benign tumors were diagnosed by MSCT, 47 cases were malignant, and 1 case was false benign, with diagnosis accuracy, sensitivity and specificity of 98.33%, 97.92% and 92.30%, respectively. Thirteen cases of benign tumors were diagnosed by MRI, 47 cases of malignant tumors, and 1 case was false benign, with diagnosis accuracy, sensitivity and specificity of 98.33%, 97.92%, and 92.30%, respectively. Fourteen cases of benign tumor were diagnosed by US, 46 cases were malignant, and 2 cases was false benign, with diagnosis accuracy, sensitivity and specificity of 96.67%, 97.92%, and 85.71%, respectively. There were no statistically significant differences in the accuracy, sensitivity, and specificity of MSCT, MRI, and US in the diagnosis of retroperitoneal tumors (P>0.05). CONCLUSIONS: MSCT, MRI, and US tests are highly accurate, sensitive, and specific in the diagnosis of retroperitoneal tumors.

Evaluation of clinical application of multi-slice computerized tomography in primary retroperitoneal tumors.

BACKGROUND: To accurately identify primary retroperitoneal tumors by multi-slice spiral CT (MSCT) for better treatment. MATERIALS AND METHODS: The common types of 380 cases of primary retroperitoneal tumor, lesion sites, and MSCT features were compared with pathological results. Fisher's or chi-square test approaches have been applied in this study. RESULTS: Multi-slice computerized tomography multi-directional reconstruction has a high accuracy for primary retroperitoneal tumors (95.7%). Seventy-three liposarcoma cases were located in peri-renal space, accounting for 76.8% (13/95) of the tumors in this region. Meanwhile, 65 cases of neurogenic tumors were located in the paravertebral column, accounting for 90.3% (65/72) of the tumors in this region. MSCT examination could effectively distinguish benign from malignant of primary retroperitoneal tumor (sensitivity = 87.2%, specificity = 82.7%, accuracy rate = 84.5%). Malignant tumors showed more irregularity shape than benign tumor (χ2  = 20.468, P < .001). 82.7% (191/231) of the malignant tumors showed adhesion or even invasion of surrounding tissues and organs (χ2  = 23.262, P < .001). Fat density of the lipoma is uniform, and lesion is not enhanced. Liposarcoma can be seen in varying proportions of fat and soft tissue density. CONCLUSION: The accuracy of MSCT scan for retroperitoneal tumors is high. Meanwhile, the coincidence rate of qualitative diagnosis before operation and/or before biopsy is also high.

[Characteristics of pneumoconiosis on multi-detector row CT and its' anatomic-pathologic basis].

In order to investigate the fine distinction of the tomographic images and the dominant anatomic distributions, we carefully reviewed and analyzed the features and predominant anatomic distribution of forty-nine pneumoconiosis patients with confirmed diagnosis on multi-detector row CT (MDCT). It was found that the round and small opacity p and irregular small opacity were mostly shown in the MDCT features of pneumoconiosis, while the large opacity and progressive massive fibrosis (PMF) were less frequently depicted in the MDCT. Distributions of round and small opacity and irregular small opacity in the six lung lobes were significantly different (P < 0.01). The most common p opacity was significantly seen in the upper and lower left lungs as well as in the upper right lung's opacity was in the upper left lung as well as lower left and right lungs. The large opacity commonly distributed in upper left and right lungs, while the PMF was often shown in both of two lungs. The results demonstrated that the MDCT could be an effective modality for detecting tiny lesions and anatomic distribution of pneumoconiosis, and it would be helpful for early diagnosis and accurate staging of the pneumoconiosis disease.

[16-Detector row CT features and related anatomic-pathology basis of idiopathic pulmonary fibrosis].

The objective of this study was to elucidata the correlation of 16-detector row CT features with the complications and anatomic-pathology of the disease in patients with idiopathic pulmonary fibrosis (IPF). The 16-detector row CT appearances and predominant anatomic distribution were analyzed in 38 cases of IPF. Of the 14 patients (36.8%) with honeycomb lung, 10 (71.4%) had honeycomb appearances predominantly distributed in the peripheral zone of the middle and lower lobes, particularly in the basal segments of the lower lobes. 11 patients (78.6%) had the clinical duration of honeycomb lung for more than 3 years. The interlobular interstitial thickening was seen in 16 cases (42.1%), the interlobular septa thickening in 20 cases (52.6%); and the thickened bronchus-vascular bundle in 9 cases (23.7%). The above-mentioned three kinds of CT features observably distributed in the peripheral zone of the middle and lower lobes, in the basal segments of the lower lobes, and in the lower lobes and middle lobe of right lung in the middle of the zone, respectively. In 15 patients (39.5%), ground-glass opacity was predominantly distributed in the peripheral zone of lung and in the basal segments of the lower lobes; and the clinical duration lasted less than 1 year was seen in 10 cases (66.7%). These results indicated that some characteristic manifestations with pathologic variation and predominant anatomic distribution of IDF can be shown on 16-detector row CT.

[Pneumoconiosis: high-resolution CT characteristics and patho-physiology].

Long-term exposure of the human body to powder-dust environment commonly results in pneumoconiosis, such as silicosis, coal worker's pneumoconiosis and asbestosis. The pathological features of pneumoconiosis include lung's nodules and fibrosis. Plain film and computed tomography (CT) are the main imaging modalities for detecting pneumoconiosis, especially the high-resolution CT (HRCT), multi-detector row CT (MDCT) and related post-processing techniques are helpful in detecting the tiny pathological manifestations of pneumoconiosis so as to make early diagnosis. Furthermore, the functional MDCT could comprehensively assess the pulmonary physiological functions of the patient with pneumoconiosis.

Adrenal sarcomatoid carcinoma: a rare case depicted on multi-detector row computed tomography.

Primary adrenal sarcomatoid carcinoma is rare malignant tumor with the characteristics of carcinoma and sarcoma. To date, only one case of primary sarcomatoid carcinoma in the adrenal gland was reported. We present here computed tomography appearance and pathological features of the case with primary adrenal sarcomatoid carcinoma confirmed by pathology. In addition, a brief review of the relevant literature is presented.

Crush thoracic trauma in the massive Sichuan earthquake: evaluation with multidetector CT of 215 cases.

PURPOSE: To determine the multidetector computed tomographic (CT) features of crush thoracic traumas resulting from the massive Sichuan earthquake. MATERIALS AND METHODS: This study was approved by the ethics committee of the medical school, and informed consent was waived. A retrospective review was undertaken of 215 multidetector chest CT scans of 112 male and 103 female patients who sustained crush thoracic injuries in the Sichuan earthquake at 2:28 pm Beijing time, May 12, 2008, and were rescued in the authors' hospital. Multidetector chest CT studies were performed between May 12, 2008, and June 7, 2008. The authors looked for injuries to the thoracic cage, pulmonary parenchyma, and pleura. RESULTS: One hundred forty-three patients (66.5%; 95% confidence interval [CI]: 60.2%, 72.8%) had at least one rib fracture; the mean number of rib fractures per patient was 6 [corrected]. Forty-five of these patients (31.5% of 143 patients; 95% CI: 23.9%, 39.1%) had flail chest, with a total of 288 ribs fractured. There were 46 patients (21.4%; 95% CI: 15.9%, 26.9%) with at least one vertebral fracture. There were 77 vertebral fractures total; 36 of these fractures were in T1 through T10. Twelve patients (5.6%; 95% CI: 2.5%, 8.7%) had sternal fractures, and 48 patients (22.3%; 95% CI: 16.7%, 27.9%) had either scapular or clavicular fractures. There were 117 patients (54.4%; 95% CI: 47.7%, 61.1%) with pulmonary parenchymal injuries and 146 (67.9%; 95% CI: 61.7%, 74.1%) with pleural injuries. CONCLUSION: Crush thoracic trauma resulting from the massive Sichuan earthquake was a life-threatening injury; this type of injury has the potential for multiple fractures and pulmonary parenchymal injuries.

[Clinical application of 64-slice CT angiography in the evaluation of lumen before and after coronary artery stent implantation].

This is a retrospective study aimed at the clinical application of 64-slice computed tomography angiography (CTA) in evaluation the lumen before and after coronary artery stent implantation. We collected the coronary artery imaging data of 46 patients undergoing 64-slice CT before coronary artery stent implantation from July 2006 through May 2007; we also collected the data of 21 patients with 34 coronary artery stents in the same period to determine the diagnostic accuracy of CTA before and after coronary artery stent implantation. The results showed that, in 46 patients, 64-slice CT enabled the visualization of the entire coronary tree with diagnostic image quality. Sensitivity, specificity, and accuracy for the detection of stenosis > or = 50% were 92.11%, 95.64% and 94.97%, respectively. In 21 patients with 34 stents implanted, 23 (67.65%) stents showed no stenosis, 8 (23.53%) stents showed low degree of restenosis, and 3 (8.83%) stents showed high degree of restenosis. In conclusion, we can accurately evaluate the degree of stenosis of lumen before and after coronary artery stent implantation with the application of 64-slice CTA.