The purpose of this study was to compare and analyze the diagnostic applications of multisliecs spiral computed tomography(MSCT)and diffusively-weighted magnetic resonance imaging(MRI)in soft tissue tumors of extremit...The purpose of this study was to compare and analyze the diagnostic applications of multisliecs spiral computed tomography(MSCT)and diffusively-weighted magnetic resonance imaging(MRI)in soft tissue tumors of extremities.A total of 104 patients with primary soft tissue tumors of limbs were selected for MSCT and MRI examination.MSCT values of various tumor types were compared during CT examination.In MRI detection,the diffusion sensitivity factor(b)of diffuse-weighted MRI was 0.500 s/mm2 to avoid as much as possible the bleeding,necrosis,scar and calcification heterogeneity components during operation.The maximum interest point was selected to observe the apparent diffusion coefficient(ADC)between benign and malignant tumors and muscle tissue.Results showed that among 104 patients,36 of patients were malignant and 68 of patients were benign.MSCT examination was consistent with pathology in 45 cases and MRI in 87 cases.In addition,the 59 of patients in MSCT examination and the 17 of patients in MRI were qualitative error and uncertainty.Soft tissue tumors on MSCT showed a low-density mass,and lipoma and cyst were specific.In MRI examination,T1WI and T2WI were significantly different in different types of tumors,while ADC values of malignant tumors were significantly lower than those of benign tumors and muscle tissues(P<0.01).However,there was no significant difference in ADC between benign tumor and muscle tissue(P>0.05).Therefore,MSCT can clearly show the soft tissue tumor lesions of the limbs and identify the relationship between them and the surrounding tissues.However,MSCT cannot make accurate characterization.MRI diffusivity weighted imaging can better differentiate benign from malignant and infer the histological origin of lesions.The detection level of MRI was significantly higher than that of CT,which was more consistent with pathology.Therefore,in the preoperative diagnosis of soft tissue tumors in limbs,MRI diffused-weighted imaging should be the first choice.展开更多
Objective: to analyze the characteristics of low-dose multi-slice spiral CT (MSCT) in neonates with pulmonary diseases, and to compare its manifestations with X-ray, and to explore the application value of low-dose MS...Objective: to analyze the characteristics of low-dose multi-slice spiral CT (MSCT) in neonates with pulmonary diseases, and to compare its manifestations with X-ray, and to explore the application value of low-dose MSCT in diagnosis. Methods A total of 76 neonates with pulmonary diseases in our hospital were selected as subjects from August 2020 to August 2021. At the same time, it is necessary to let patients and their families know the content and purpose of this study to protect their right to know and lay a foundation for subsequent studies. Results In 76 neonatal patients, clinical diagnosis can be found: Pneumonia, 61, 13 meconium inhalation disease performance, wet lung symptoms in 1 case, pulmonary hemosiderosis of cases for 1 case, through the low doses of multislice CT screening examination, found that more than four children each is 58 cases of the disease, 10, 1, 1 case, then the compared with the clinical diagnosis, conformity degree is 92.11%;Through X-ray screening, the number of children with the above four diseases was found to be 50, 4, 1 and 1 respectively, so the coincidence was 73.68% compared with the clinical diagnosis. From this point of view, the coincidence rate of screening results is much higher than that of X-ray after selecting low-dose multi-slice spiral CT for diagnosis compared with clinical diagnosis results. Conclusion For clinical diagnosis of neonatal lung diseases, low-dose MSCT can accurately detect some relatively hidden or obscure lesions, and has a prominent advantage compared with X-ray, so it has a certain practical value in clinical diagnosis and application. As medical staff, in the future clinical application, patients should be recommended to use multi-slice spiral CT technology for examination as far as possible to ensure the accuracy of the examination effect.展开更多
文摘The purpose of this study was to compare and analyze the diagnostic applications of multisliecs spiral computed tomography(MSCT)and diffusively-weighted magnetic resonance imaging(MRI)in soft tissue tumors of extremities.A total of 104 patients with primary soft tissue tumors of limbs were selected for MSCT and MRI examination.MSCT values of various tumor types were compared during CT examination.In MRI detection,the diffusion sensitivity factor(b)of diffuse-weighted MRI was 0.500 s/mm2 to avoid as much as possible the bleeding,necrosis,scar and calcification heterogeneity components during operation.The maximum interest point was selected to observe the apparent diffusion coefficient(ADC)between benign and malignant tumors and muscle tissue.Results showed that among 104 patients,36 of patients were malignant and 68 of patients were benign.MSCT examination was consistent with pathology in 45 cases and MRI in 87 cases.In addition,the 59 of patients in MSCT examination and the 17 of patients in MRI were qualitative error and uncertainty.Soft tissue tumors on MSCT showed a low-density mass,and lipoma and cyst were specific.In MRI examination,T1WI and T2WI were significantly different in different types of tumors,while ADC values of malignant tumors were significantly lower than those of benign tumors and muscle tissues(P<0.01).However,there was no significant difference in ADC between benign tumor and muscle tissue(P>0.05).Therefore,MSCT can clearly show the soft tissue tumor lesions of the limbs and identify the relationship between them and the surrounding tissues.However,MSCT cannot make accurate characterization.MRI diffusivity weighted imaging can better differentiate benign from malignant and infer the histological origin of lesions.The detection level of MRI was significantly higher than that of CT,which was more consistent with pathology.Therefore,in the preoperative diagnosis of soft tissue tumors in limbs,MRI diffused-weighted imaging should be the first choice.
文摘Objective: to analyze the characteristics of low-dose multi-slice spiral CT (MSCT) in neonates with pulmonary diseases, and to compare its manifestations with X-ray, and to explore the application value of low-dose MSCT in diagnosis. Methods A total of 76 neonates with pulmonary diseases in our hospital were selected as subjects from August 2020 to August 2021. At the same time, it is necessary to let patients and their families know the content and purpose of this study to protect their right to know and lay a foundation for subsequent studies. Results In 76 neonatal patients, clinical diagnosis can be found: Pneumonia, 61, 13 meconium inhalation disease performance, wet lung symptoms in 1 case, pulmonary hemosiderosis of cases for 1 case, through the low doses of multislice CT screening examination, found that more than four children each is 58 cases of the disease, 10, 1, 1 case, then the compared with the clinical diagnosis, conformity degree is 92.11%;Through X-ray screening, the number of children with the above four diseases was found to be 50, 4, 1 and 1 respectively, so the coincidence was 73.68% compared with the clinical diagnosis. From this point of view, the coincidence rate of screening results is much higher than that of X-ray after selecting low-dose multi-slice spiral CT for diagnosis compared with clinical diagnosis results. Conclusion For clinical diagnosis of neonatal lung diseases, low-dose MSCT can accurately detect some relatively hidden or obscure lesions, and has a prominent advantage compared with X-ray, so it has a certain practical value in clinical diagnosis and application. As medical staff, in the future clinical application, patients should be recommended to use multi-slice spiral CT technology for examination as far as possible to ensure the accuracy of the examination effect.
