Fig 1.
The M1 diameter ratio is defined as a/b × 100 (%). M1 tortuosity is defined as d/c.
Fig 2.
Illustration of a representative case of lipohyalinotic degeneration (LD) and branch atheromatous disease (BAD).
(A) Angiographic findings of the left corona radiata LD showing a high M1 diameter ratio and tortuosity. (B) Angiographic findings of the left corona radiata BAD showing a low M1 diameter ratio and tortuosity. (C) Measurement of infarction size via maximal length and axial slices.
Table 1.
Characteristics between patients with LD and BAD.
Table 2.
Logistic regression analysis of factors associated with LD.
Fig 3.
Correlations between the M1 diameter ratio (%) and the number of lacunes.
Fig 4.
Receiver operating characteristic (ROC) curve for the diagnostic performance of the M1 diameter ratio in distinguishing BAD from LD.
Fig 5.
Comparison of fluid hemodynamics within the MCA and lenticulostriate arteries in the LD/BAD model via computational fluid dynamics analysis.
(A) Velocities and flow rate. Eddying flows are marked in red rectangles. (B) Wall shear stress. (C) Pressure gradient.