Correlation and Characteristics of Intravoxel Incoherent Motion and Arterial Spin Labeling Techniques Versus Multiple...

Area of Science:

• Neuroradiology
• Medical Imaging
• Oncology

Background:

• Perfusion MRI techniques are vital for characterizing brain tumors.
• Intravoxel Incoherent Motion (IVIM) and Arterial Spin Labeling (ASL) offer insights into tissue microcirculation.
• Dynamic Susceptibility Contrast (DSC) MRI provides established perfusion parameters.

Purpose of the Study:

• To compare brain tumor perfusion data from IVIM and ASL imaging with DSC-derived parameters.
• To elucidate the characteristics of IVIM and ASL perfusion data in the context of cerebral blood flow (CBF) analysis.

Main Methods:

• ASL-CBF, IVIM, and DSC MRI were performed on 24 brain tumor patients.
• IVIM data were analyzed using two distinct models.
• DSC MRI yielded relative blood flow (rBF), relative blood volume (rBV), corrected relative blood volume (crBV), mean transit time (MTT), and leakage coefficient (K2).

Main Results:

• ASL-CBF demonstrated trends consistent with DSC perfusion parameters.
• Vascular permeability had a lesser impact on ASL-CBF compared to DSC.
• The fast diffusion component in IVIM provided more permeability information than the f value.

Conclusions:

• ASL-CBF is more suitable for brain tumor perfusion evaluation than IVIM parameters.
• Careful selection of ASL-CBF and IVIM techniques is necessary.
• Understanding the biological significance of each parameter is key for accurate interpretation of brain tumor pathology.