Objective: to explore the efficacy of low-dose chest CT scanning combined with KARL3D iterative reconstruction technique. Methods: 100 patients who underwent chest CT examination in our hospital were randomly selected...Objective: to explore the efficacy of low-dose chest CT scanning combined with KARL3D iterative reconstruction technique. Methods: 100 patients who underwent chest CT examination in our hospital were randomly selected as the analysis objects and randomly divided into four groups, each with 25 cases. Group A was reconstructed by FBP algorithm and the pipeline current was 150mA;. The low-dose groups B, C and D were reconstructed by Karl algorithm with tube currents of 80mas, 60mas and 40mas respectively. The radiation dose and subjective and objective scores of the four groups were compared. SPSS210 statistical software was used for data analysis. Results: the radiation dose of group B, C and D using low dose tube current combined with karl3d iterative reconstruction technique was lower than that of group a (p < 0.05);The difference between the objective assessment (SD, SNR) and subjective score of the four groups was all p>0.05. Conclusion: The combination of low-dose iterative reconstruction technique and Karl 3D chest CT scan can obtain good images and reduce radiation dose, which is worthy of promotion in the industry.展开更多
Lung cancer(LC)is still one of the most frequent cancers with a high related mortality.Their prognosis is directly proportional to the stage at the time of diagnosis.Seventy percent are currently diagnosed in advanced...Lung cancer(LC)is still one of the most frequent cancers with a high related mortality.Their prognosis is directly proportional to the stage at the time of diagnosis.Seventy percent are currently diagnosed in advanced or locally advanced stage(higher than stage III),making a cure unlikely for the majority of patients.Developments in LC treatment are significant however they do not seem to be enough to reverse the current situation,at least,in a short period of time.Despite recent advances in treatment,primary prevention and early diagnosis appear to be the key to reduce the incidence and mortality of this disease.Many countries have developed LC screening programs based on the results of clinical trials published in recent years.The aim of this paper is to review the latest results of the NEderlands Leuvens Longkanker Screenings Onderzoek and compare them with the findings of the National Lung Screening Trial.We address the question whether it is necessary to continue discussing the evidence regarding LC screening.In both trials,there is a clear impact on LC mortality but,with a modest reduction in over all mortality.Undoubtedly,the benefit of screening can be expected to grow as low-dose computed tomographys are performed over longer periods of time.展开更多
文摘Objective: to explore the efficacy of low-dose chest CT scanning combined with KARL3D iterative reconstruction technique. Methods: 100 patients who underwent chest CT examination in our hospital were randomly selected as the analysis objects and randomly divided into four groups, each with 25 cases. Group A was reconstructed by FBP algorithm and the pipeline current was 150mA;. The low-dose groups B, C and D were reconstructed by Karl algorithm with tube currents of 80mas, 60mas and 40mas respectively. The radiation dose and subjective and objective scores of the four groups were compared. SPSS210 statistical software was used for data analysis. Results: the radiation dose of group B, C and D using low dose tube current combined with karl3d iterative reconstruction technique was lower than that of group a (p < 0.05);The difference between the objective assessment (SD, SNR) and subjective score of the four groups was all p>0.05. Conclusion: The combination of low-dose iterative reconstruction technique and Karl 3D chest CT scan can obtain good images and reduce radiation dose, which is worthy of promotion in the industry.
文摘Lung cancer(LC)is still one of the most frequent cancers with a high related mortality.Their prognosis is directly proportional to the stage at the time of diagnosis.Seventy percent are currently diagnosed in advanced or locally advanced stage(higher than stage III),making a cure unlikely for the majority of patients.Developments in LC treatment are significant however they do not seem to be enough to reverse the current situation,at least,in a short period of time.Despite recent advances in treatment,primary prevention and early diagnosis appear to be the key to reduce the incidence and mortality of this disease.Many countries have developed LC screening programs based on the results of clinical trials published in recent years.The aim of this paper is to review the latest results of the NEderlands Leuvens Longkanker Screenings Onderzoek and compare them with the findings of the National Lung Screening Trial.We address the question whether it is necessary to continue discussing the evidence regarding LC screening.In both trials,there is a clear impact on LC mortality but,with a modest reduction in over all mortality.Undoubtedly,the benefit of screening can be expected to grow as low-dose computed tomographys are performed over longer periods of time.
