Abstract

Purpose : To evaluate the usefulness of spiral CT in the measurement of lung volumes. Materials and Methods :Fifteen healthy volunteers were studied by both spirometer and spiral CT at full inspiration and expiration inorder to correlate their results, including total lung capacity (TLC), vital capacity (VC) and residual volume(RV). 3-D images were reconstructed from spiral CT, and we measured lung volumes at a corresponding CT windowrange ; their volumes were compared with the pulmonary function test (paired t-test). Results : The window rangecorresponding to TLC was from -1000HU to -150HU (p=0.279, r=0.986), and for VC from -910HU to -800HU (p=0.366, r=0.954) in full-inspiratory CT. The optimal window range for RV in full-expiratory CT was from -1000HU to -450HU(p=0.757, r=0.777), and TLC-VC in full-inspiratory CT was also calculated (p=0.843, r=0.847). Conclusion : SpiralCT at full inspiration can used to lung volumes such as TLC, VC and RV.

주제어

#Lung, CT   #Lung, ventilation   #Computed tomography (CT), helical  

참고문헌 (14)

1. measurement of pulmonary parenchymal attenuation: use of spirometric gating with quantative CT , Kalender WA;Rienmuller RK;Seissler W(et al.) , Radiology / v.175,pp.265-268, 1990
   
2. Measurement of lung density by computed tomogrphy , Wegener OH;Koeppe P;Oeser H , J Comput Assist Tomogr / v.2,pp.263-273, 1978
   
3. Quantation of emphysema by computed tomography using a "density mask"program and correlation with pulmonary function tests , Kinsella M;Muller NL;Abboud RT;Morison NJ;DaBuncio A , Chest / v.97,pp.315-321, 1990
   
4. CT measurements of lung density in life can quantitate distal airspace enlargement: an essential defining feature of human emhysema , Gould GA;MacNee W;Mclean A(et al.) , Am Rev Respir Dis / v.137,pp.380-392, 1988
   
5. "Density mask" : an objective method to quantative emphysema using computed tomography , Muller NL;Staples CA;Miller RR;Abbound RT , Chest / v.94,pp.782-747, 1988
   
6. Use of quantitative CT to predict postoperative lung cancer , Wu MT;Chang JM;Chiang AA(et al.) , Radiology / v.191,pp.257-262, 1994
   
7. 나선식 정량적 CT : 폐절제 후 폐기능 예측에의 유용성 , 정명진;임정기;구건모;조인철;연경모 , 대한방사선의학회지 / v.33,pp.559-564, 1995
   원문보기 상세보기
8. Roentgengraphic determination of the total lung capacity. A new method evaluated in health, emphysema and congestive heart failure , Barnhard HJ;Pierce JA;Joyce JW;Bates JH , Am J Med / v.28,pp.51-60, 1960
   
9. Radiographic and plethysmographic determination of total lung capacity , Loyd HM;String ST;Dubois AB , Radiology / v.86,pp.7-14, 1966
   
10. Two methods for isolating the lung area of a CT scan for density information , Hedund LW;Anderson RF;Goulding PL;Beck JW;Effman El;Putman CE , Radiology / v.144,pp.353-357, 1982
    
11. Computed tomography of the lung ; densitometric studies , Hedlund LW;Vock P;Effmann EL , Radiol Clin North Am / v.21,pp.775-788, 1983
    
12. 생리학. 호흡생리 , 강두희 , 개정 4판 / v.,pp.3-7, 1992
    
13. Standardized quantative high resolution CT in lung disease , Rienmuller RK;Behr J;Kalender Wa(et al.) , J Comput Assist Tomogr / v.15,pp.742-749, 1991
    
14. Studies of total pulmonary capacity and its subdivisions Ⅱ. Correlation with physical and radiologic measurement , Hurtado A;Fray WW , J Clin Invest / v.12,pp.807-816, 1933
    

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