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Lai Youping
&
•X • • • • •
(
1%
)
• •
DXA
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scan protocol 3 L1 Osteo L3 26° 125 mm( ± 1 mm)
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Osteo
, 100 , 170mg/ cm, 180. 6 mg/ cm, ,51 60 40 % , 61 70 70 % , 30 % : ,
0-80 - BMD in mg Ca-HA/ml BMD - 2 SD 95%
: - individual results for each vertebra - Average BMD
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1 2.5 2.5
+1 -1 1 -1 -2.5 -2.5 2.5
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Osteo: T
Z
Z-
Z-
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Z Z
Z-score Z-score
Z T Z Z
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X-ray Photo densitometry
X CT CT
QCT, Quantitative Computed Tomography mg/cm3 SPA, Single Photon Absorptiometry DPA, Dual Photon Absorptiometry DXA, Dual Energy X-ray Absorptiometry X
, , r,
, SPA)
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Osteo
(
)
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CT 1) - & - 200mg Ca 2) 3) 4) : (Ca-HA)/ml
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CT –
CT & mg/ml Ca-HA &
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ROI
/ ROI
(1) (2) (3) (4) (5)
(A) (L) (C) (T) (R) Accept Contours
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Accept Contours
Skip
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(
) (BMD) ( )
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Osteo CT
Lai You Ping CT Clinical Education Specialist
Page 1
Date
Author
/ CT /
CT
?
/WHO /
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/ —
CT
?
9000 2/3 (>12 months)
7.1% 2050
2.21
CT Db (mg/mm3) Hk CT Hw CT
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BMD
&
(SD) for :
&
Cortical
Trabecular
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X-axis Y-axis Center line 2 adjacent lines
20131013
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Patient Browser
application circulation Osteo
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Start Evaluation
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”
1 CT
2
4-5 BMD
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BMD BMD BMD BMD
BMD
50mg/cm3 BMD
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CT?
CT
&
: -
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CT , , , : : PHILIP QCT
CT : 21 30 , ,41 50 (100 110 mg/ cm) 61 70
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QCT QCT EmotionDuo Osteo 60 1 2 BMD QCT 3 5 30 35 177.24±27.28 50 596 7 25 CT
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CT
: Siemens T-score & Z-score & BMDs PC
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• • • • •
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Db
Hb CK
Hb Hw Ck Hk Hw
QUS, Quantitative Ultrasound Bone Densitometry
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X
DXA
X X 40keV 70 80keV X X Kedge BMC X DXA DXA
g/cm2
BMD DXA
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bone mineral density (BMD).
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T-Score • BMD •
20-30
Z-Score • •
BMD
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Lai ping
Osteo: T TT-
Z
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(L1-L3) (max. 2 digits) L1 FOV
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CT –
Osteo ( ) 80kV, 125mAs, 0.5s 10mm slice width, Kernel S80f Table height 125mm Osteo 80kV, 350mAs, 1.5s 10mm slice width, Kernel S80s