FPD 1985 1998 2000 2002 FPD X
X
X FPD X CAD
X FPD X CAD X
X 1970 Autofluoroscope Toffolo RR, et al. The autofluoroscope and 133-Xe in dynamic studies of pulmonary perfusion and ventilation. Radiology, 94;692-696,1970.
X Fluorodensimetry Video densitmetory George RB, et al. Fluorodensimetry. A method for analyzing regional ventilation and diaphragm function. JAMA, 217; 171-176, 1971.
X 1980 I.I.-X TV Silverman NR, et al. Clinical video-densitometry. Pulmonary ventilation analysis. Radiology, 103; 263-265, 1972.
X
X FPD
FPDによるX線動画像の取得 X-ray X-ray X線の減弱 光 電気信号 デジタル画像
FPD
X FPD X CAD
SONIAL VISION Safire Shimadzu Japan
RIS DICOM
110 V, 80mA, 6.3msec 1.5m 7.5 fps 60 frames 1.2 mgy IAEA X 1.5 G [ ] International basic safety standards for protection aginst ionizing radiation and for the safety of radiation sources, (International atomic energy agency (IAEA), vienna, 1996)
65,535 1280 x 1280 300 m 16bits Gray-scale 0
X FPD X CAD
X
1 10 3
COPD 1 10 0.8cm 1.2cm
COPD [ ] Suga K, et al. Impaired respiratory mechanics in pulmonary emphysema: evaluation with dynamic breathing MRI. J Magn Reson Imaging. 1999;10(4):510-20.
CTR a a b b CTR= a/b 100= 48% CTR = a/b 100 = 64% >50%
3 1 R. Tanaka, et al: Automated analysis for the respiratory kinetics with the screening dynamic chest radiography using a flat-panel detector system. CARS2003, Proc.179-186.
1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 R. Tanaka, et al.:computerized methods for determining respiratory phase on dynamic chest radiographs obtained by a dynamic flat-panel detector system. J Digit Imag,2006;9(1):41-51. R. Tanaka, et al.:breathing Chest Radiography using a Dynamic Flat-Panel Detector (FPD) with Computer Analysis for a Screening Examination. Med Phys, 2004;31(8):2254-2262.
msec mm (mm)
Systole Expiration Diastole Inspiration Citation from L. F. Squire and R. A. Novelline, Overexpansion and Collapse of the Lung. In: Fundamentals of Radiology, 4th ed. pp. 88-89.
X RI 26(1);13-16, 2009
Systole Expiration Diastole Inspiration Citation from L. F. Squire and R. A. Novelline, Overexpansion and Collapse of the Lung. In: Fundamentals of Radiology, 4th ed. pp. 88-89.
Systole Expiration Diastole Inspiration
X FPD X CAD
255 0
+7.5% -7.5% X,
50 (=0.01%) 0
X Down ( - ) ( - ) ( - ) UP
+10 X Down -10 X Up R T
X FPD X CAD
X CAD X
X CAD 1.5% r=0.01 r=0.70 0
X CAD 1.5% r=0.01 0
X CAD 2.0% r=0.40 0
R Tanaka, S Sanada, M Fujimura, et al. Development of computeraided diagnosis system for functional evaluation on breathing chest radiographs: Preliminary study. IJCARS, 2010(In press) X CAD
X FPD X CAD
R. Tanaka, S. Sanada, N. Okazaki, et al: Evaluation of pulmonary function using breathing chest radiography with a dynamic flat-panel detector (FPD): Primary results in pulmonary diseases. Invest Radiol, 41(10), 735-745, 2006
X
RI
RI
15 COPD, (31-75 years old; 3 Female, 7 Male;) 10 (21 51 years old; mean, 25.8 years old; M:F=7:3)
COPD SBS+ VC 97.7 1 22.4
CT COPD SBS+
COPD SBS+
COPD SBS+
COPD SBS+
COPD SBS+
COPD SBS+
COPD SBS+
COPD SBS+
COPD 52 VC 110.2 1 58.9
CT COPD 52
COPD 52 Ventilation Perfusion
COPD 52
COPD 52
COPD 52
COPD 52 r 0.74
74 VC 75.5 1 49.4
74 Ventilation Perfusion
RI V/Q 0 0-0.5 0.5-1 1-1.5 1.5-2 2-5
V/Q 0 0-0.5 0.5-1 1-1.5 1.5-2 2-5
RI V/Q V/Q RI 0 0-0.5 0.5-1 1-1.5 1.5-2 2-5 X - mismatch V/Q study 26(3) 68-72, 2009
74 V/Q PV r=0.78 V/Q RI
COPD RI V/Q study
RI
CAD)
X
http://mhs3.mp.kanazawa-u.ac.jp/
FPD
Sholder Temporomandibular Joint Chest Cervical spine Heart Hand Knee
http://www.sanadalab.com/
1. & 2. CAD