Imt Formulas; Imt References - Siemens ACUSON Cypress Operator's Manual

Vascular Calculations
7-20

IMT Formulas

IMT Formulas
TABLE 37.
Type Formula
IMT Mean
Distance
D
D
IMT Standard
Deviation
D
D

IMT References

1. Burke, G.L., Evans, G.W., Riley, W.A., Sharrett, A.R., Howard, G., Barnes, R.W.,
Rosamond, W., Crow, R.S., Rautaharju, P.M., Heiss, G., Arterial wall thickness is asso-
ciated with prevalent cardiovascular disease in middle-aged adults: the Atherosclerosis
Risk in Communities (ARIC) study. Stroke, 1995; 26:386-391.
2. Stein, J.H., Korcarz, C.E., Mays, M.E., Douglas, P.S., Palta, M., Zhang, H., LeCaire,
T., Paine, D., Gustafson, D., Fan, L., A Semiautomated Ultrasound Border Detection
Program That Facilitates Clinical Measurement of Ultrasound Carotid Intima-Media
Thickness. Journal of the American Society of Echocardiography, 2005; 18 (3):244-
251.
3. Riley, W.A., Evans, G.W., Sharrett, A.R., Burke, G.L., Barnes, R.W., Variation of
common carotid artery elasticity with intimal-medial thickness: the ARIC Study. Ath-
erosclerosis Risk in Communities. Ultrasound Med Biol., 1997; 23 (2): 157-164.
4. Howard, G., Sharrett, A.R., Heiss, G., Evans, G.W., Chambless, L.E., Riley, W.A.,
Burke, G.L., Carotid artery intimal-medial thickness distribution in general populations
as evaluated by B-mode ultrasound. ARIC Investigators. Stroke, 1993 Sep; 24 (9):
1297-1304.
ACUSON Cypress™ Operator's Manual
N
∑
1
D = --- - D
i
N
i = 1
is the mean distance.
is the distance between outer border and inner border.
i
N
∑
1
S = ------------ -
N 1 –
N 1 –
i = 1
is the mean distance.
is the distance between outer border and inner border.
i
2
( )
D – D
i
Units
mm
mm