The quantitative measurement of pulmonary lobar volume using 3-dimensional volumetric diagnosis system and 64 row MDCT / 实用放射学杂志

ABSTRACT

Objective To explore the value of 3‐dimensional volumetric diagnosis system in quantitative measurement of pulmona‐ry lobar volumetry using a 64 row MDCT .Methods Seventy‐seven adult volunteers were scanned twice on a 64 row MDCT at the end of the maximum inspiratory and maximum expiratory end respectively .On a volumetric computer‐aided diagnosis system ,the en‐tire lung was semiautomatically separated into 5 anatomy lobes including the right upper lobe ,right middle lobe ,right lower lobe ,left upper lobe ,and left lower lobe .Each lobar volume was measured .Results The lung volume of left upper lobe ,right lower lobe ,left lower lobe ,right upper lobe ,right middle lobe in male volunteers were 1 303 .90 mL and 938 .31 mL ,1 276 .90 mL and 737 .69 mL , 1 204 .47 mL and 678 .67 mL ,1 048 .49 mL and 754 .83 mL ,519 .53 mL and 407 .86 mL at the end of the inspiratory and expiratory respectively .The lung volume of left upper lobe ,right lower lobe ,left lower lobe ,right upper lobe ,right middle lobe in female volun‐teers were 915 .78 mL and 666 .23 mL ,913 .87 mL and 576 .62 mL ,822 .17 mL and 509 .30 mL ,734 .20 mL and 530 .23 mL ,389 .13 mL and 316 .70 mL at the end of the inspiratory and expiratory respectively .The values of each lobe volume between the full inspiration phase and expiration phase group showed significant difference the same sex group (P<0 .05) .The values of each lobe volume in the man group were significantly larger than those of female group in both respiratory phase (P<0 .05) .Of the D‐value in the each lobe volume in 5 anatomy lobe at full inspiration phase and expiration phase in both sex group ,both of the lower lobes were the largest , followed by the left upper lobe ,right upper lobe and right middle lobe .The D‐value in the each lobe volume at full inspiration phase and expiration phase in the man group were significantly larger than those of female group .Conclusion Three‐dimensional volumet‐ric diagnosis system and 64 row MDCT images can be used to assess the volume of each lung lobe .