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Figure 9 | Journal of Analytical Science and Technology

Figure 9

From: Coronary stent as a tubular flow heater in magnetic resonance imaging

Figure 9

The problem of restenosis in MRI. Theoretical stent’s steady-state temperature in the body, T s  = 37°C + ΔT, under the rf irradiation is presented as a function of the blood flow reduction due to restenosis, where ΔT was calculated from Equation 9 (see text). The blood flow reduction is defined as \( x=\left(1-{\varPhi}_b/{\varPhi}_b^0\right)\times 100 \) (in %) with \( {\varPhi}_b^0 \) denoting the unrestricted flow. The x = 0 % value corresponds to the fully open stent (no flow reduction), whereas x = 100 % corresponds to the fully blocked stent (100 % flow reduction).

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