This study examined the value of volume rendering （VR） interpretation in assessing the growth of pulmonary nodular ground-glass opacity （nGGO）. A total of 47 nGGOs （average size, 9.5 mm; range, 5.7-20.6 mm） were...This study examined the value of volume rendering （VR） interpretation in assessing the growth of pulmonary nodular ground-glass opacity （nGGO）. A total of 47 nGGOs （average size, 9.5 mm; range, 5.7-20.6 mm） were observed by CT scanning at different time under identical parameter settings. The growth of nGGO was analyzed by three radiologists by comparing the thin slice （TS） CT images of initial and repeat scans with side-by-side cine mode. One week later synchronized VR images of the two scans were compared by side-by-side cine mode to evaluate the nGGO growth. The nodule growth was rated on a 5-degree scale： notable growth, slight growth, dubious growth, stagnant growth, shrinkage. Growth standard was defined as： Density increase 〉 30 HU and （or） diameter increase （by 20% in nodules 〉_10 mm, 30% in nodules of 5-9 mm）. Receiver operating characteristic （ROC） was performed. The results showed that 32 nGGOs met the growth criteria （29 nGGOs showed an increase in density; 1 nGGO showed an increase in diameter; 2 nGGOs showed an increase in both diameter and density）. Area under ROC curve revealed that the performance with VR interpretation was better than that with TS interpretation （P〈0.01, P〈0.05 and P〈0.05 for observers A, B and C respectively）. Consistency between different observers was excellent with both VR interpretation （κ=0.89 for observers A＆C A＆B, B＆C） and TS interpretation （κ=0.71 for A＆B, κ=0.68 for A＆C, κ=0.74 for B＆C）, but time spending was less with VR interpretation than with TS interpretation （P〈0.0001, P〈0.0001 and P〈0.05 for observers A, B and C, respectively）. It was concluded that VR is a useful technique for evaluating the growth of nGGO.展开更多
目的探讨肺GGO改变特征为主的早期肺癌患者微创精准治疗的疗效、可行性与安全性。方法筛选早期肺癌毛玻璃(GGO)样变患者,共60例,随机数表法分为两组。观察组患者采取CT引导下Hook-wire术前定位胸腔镜微创切除术(VATS),对照组患者行传统...目的探讨肺GGO改变特征为主的早期肺癌患者微创精准治疗的疗效、可行性与安全性。方法筛选早期肺癌毛玻璃(GGO)样变患者,共60例,随机数表法分为两组。观察组患者采取CT引导下Hook-wire术前定位胸腔镜微创切除术(VATS),对照组患者行传统开胸肺癌根治术。比较两组患者手术情况、手术相关指标差异、术后并发症以及术后常规随访情况差异。结果 VATS切除术成功率100%,CT引导Hook-wire明确定位率为为100%,平均用时(9.87±7.41)min。观察组患者手术时间、术中出血量、住院时间、胸管留置时间均明显少于对照组(P<0.05)。观察组并发症发生率19.56%,显著低于对照组(P<0.001)。术后1 d、1 w VAS评分观察组患者均显著低于对照组(P<0.05)。术后6个月~3年随访,观察组患者远期生存指数与对照组比较差异无统计学意义(P>0.05),与开胸肺癌根治术远期疗效呈一致性。结论采取CT引导下Hook-wire术前定位胸腔镜微创切除术具有临床可操作性、较高的安全性与近期疗效,微创精准治疗有效减少患者手术带来的疼痛与术后并发症的发生。展开更多
The introduction of coronavirus disease-2019(COVID-19)as a global pandemic has contributed to overall morbidity and mortality.With a focus on understanding the immunology and pathophysiology of the disease,these featu...The introduction of coronavirus disease-2019(COVID-19)as a global pandemic has contributed to overall morbidity and mortality.With a focus on understanding the immunology and pathophysiology of the disease,these features can be linked with the respective findings of imaging studies.Thus,the constellation between clinical presentation,histological,laboratory,immunological,and imaging results is crucial for the proper management of patients.The purpose of this article is to examine the role of imaging during the particular stages of severe acute respiratory syndrome coronavirus 2 infection–asymptomatic stage,typical and atypical COVID-19 pneumonia,acute respiratory distress syndrome,multiorgan failure,and thrombosis.The use of imaging methods to assess the severity and duration of changes is crucial in patients with COVID-19.Radiography and computed tomography are among the methods that allow accurate characterization of changes.展开更多
BACKGROUND Coronavirus disease 2019(COVID-19)is a major public health emergency with obvious characteristics of human-to-human transmission,and there are infective asymptomatic carriers.Early identification and proper...BACKGROUND Coronavirus disease 2019(COVID-19)is a major public health emergency with obvious characteristics of human-to-human transmission,and there are infective asymptomatic carriers.Early identification and proper management of patients with COVID-19 are important.Features in chest computed tomography(CT)can facilitate identifying newly infected individuals.However,CT findings of some lung contusions are similar to those of COVID-19,as shown in the present case.CASE SUMMARY A 46-year-old woman was admitted to hospital for backache and foot pain caused by a fall injury 1 d before hospitalization.She was suspected of having COVID-19,since there was a confirmed COVID-19 case near her residence.But she had no fever,cough,chest tightness,difficult breathing,nausea,vomiting,or diarrhea,etc.On physical examination,the lower posterior chest of both sides showed dullness on percussion and moist rales at the end of inspiration on auscultation.The white blood cell count and lymphocyte count were 10.88×109/L and 1.04×109/L,respectively.CT performed on February 7,2020 revealed that both lungs were scattered with patchy ground-glass opacity.The patient was diagnosed with pulmonary contusion with thoracic spinal fracture(T12),calcaneal fracture,and pelvic fracture.On day 9 after conservative treatment,her condition was alleviated.On review of the chest CT,the previous shadows were significantly reduced.CONCLUSION Differential diagnosis of lung contusion and COVID-19 must be emphasized.Both conditions require effective prompt actions,especially COVID-19.展开更多
基金supported by a grant from the Science and Technology Program of Guangdong Province of China(No.2009B030801120)
文摘This study examined the value of volume rendering （VR） interpretation in assessing the growth of pulmonary nodular ground-glass opacity （nGGO）. A total of 47 nGGOs （average size, 9.5 mm; range, 5.7-20.6 mm） were observed by CT scanning at different time under identical parameter settings. The growth of nGGO was analyzed by three radiologists by comparing the thin slice （TS） CT images of initial and repeat scans with side-by-side cine mode. One week later synchronized VR images of the two scans were compared by side-by-side cine mode to evaluate the nGGO growth. The nodule growth was rated on a 5-degree scale： notable growth, slight growth, dubious growth, stagnant growth, shrinkage. Growth standard was defined as： Density increase 〉 30 HU and （or） diameter increase （by 20% in nodules 〉_10 mm, 30% in nodules of 5-9 mm）. Receiver operating characteristic （ROC） was performed. The results showed that 32 nGGOs met the growth criteria （29 nGGOs showed an increase in density; 1 nGGO showed an increase in diameter; 2 nGGOs showed an increase in both diameter and density）. Area under ROC curve revealed that the performance with VR interpretation was better than that with TS interpretation （P〈0.01, P〈0.05 and P〈0.05 for observers A, B and C respectively）. Consistency between different observers was excellent with both VR interpretation （κ=0.89 for observers A＆C A＆B, B＆C） and TS interpretation （κ=0.71 for A＆B, κ=0.68 for A＆C, κ=0.74 for B＆C）, but time spending was less with VR interpretation than with TS interpretation （P〈0.0001, P〈0.0001 and P〈0.05 for observers A, B and C, respectively）. It was concluded that VR is a useful technique for evaluating the growth of nGGO.
文摘目的探讨肺GGO改变特征为主的早期肺癌患者微创精准治疗的疗效、可行性与安全性。方法筛选早期肺癌毛玻璃(GGO)样变患者,共60例,随机数表法分为两组。观察组患者采取CT引导下Hook-wire术前定位胸腔镜微创切除术(VATS),对照组患者行传统开胸肺癌根治术。比较两组患者手术情况、手术相关指标差异、术后并发症以及术后常规随访情况差异。结果 VATS切除术成功率100%,CT引导Hook-wire明确定位率为为100%,平均用时(9.87±7.41)min。观察组患者手术时间、术中出血量、住院时间、胸管留置时间均明显少于对照组(P<0.05)。观察组并发症发生率19.56%,显著低于对照组(P<0.001)。术后1 d、1 w VAS评分观察组患者均显著低于对照组(P<0.05)。术后6个月~3年随访,观察组患者远期生存指数与对照组比较差异无统计学意义(P>0.05),与开胸肺癌根治术远期疗效呈一致性。结论采取CT引导下Hook-wire术前定位胸腔镜微创切除术具有临床可操作性、较高的安全性与近期疗效,微创精准治疗有效减少患者手术带来的疼痛与术后并发症的发生。
文摘The introduction of coronavirus disease-2019(COVID-19)as a global pandemic has contributed to overall morbidity and mortality.With a focus on understanding the immunology and pathophysiology of the disease,these features can be linked with the respective findings of imaging studies.Thus,the constellation between clinical presentation,histological,laboratory,immunological,and imaging results is crucial for the proper management of patients.The purpose of this article is to examine the role of imaging during the particular stages of severe acute respiratory syndrome coronavirus 2 infection–asymptomatic stage,typical and atypical COVID-19 pneumonia,acute respiratory distress syndrome,multiorgan failure,and thrombosis.The use of imaging methods to assess the severity and duration of changes is crucial in patients with COVID-19.Radiography and computed tomography are among the methods that allow accurate characterization of changes.
文摘BACKGROUND Coronavirus disease 2019(COVID-19)is a major public health emergency with obvious characteristics of human-to-human transmission,and there are infective asymptomatic carriers.Early identification and proper management of patients with COVID-19 are important.Features in chest computed tomography(CT)can facilitate identifying newly infected individuals.However,CT findings of some lung contusions are similar to those of COVID-19,as shown in the present case.CASE SUMMARY A 46-year-old woman was admitted to hospital for backache and foot pain caused by a fall injury 1 d before hospitalization.She was suspected of having COVID-19,since there was a confirmed COVID-19 case near her residence.But she had no fever,cough,chest tightness,difficult breathing,nausea,vomiting,or diarrhea,etc.On physical examination,the lower posterior chest of both sides showed dullness on percussion and moist rales at the end of inspiration on auscultation.The white blood cell count and lymphocyte count were 10.88×109/L and 1.04×109/L,respectively.CT performed on February 7,2020 revealed that both lungs were scattered with patchy ground-glass opacity.The patient was diagnosed with pulmonary contusion with thoracic spinal fracture(T12),calcaneal fracture,and pelvic fracture.On day 9 after conservative treatment,her condition was alleviated.On review of the chest CT,the previous shadows were significantly reduced.CONCLUSION Differential diagnosis of lung contusion and COVID-19 must be emphasized.Both conditions require effective prompt actions,especially COVID-19.
