"The most helpful MRI feature in distinguishing a chordoid meningiomas from other histological variants are their diffusion characteristics. They typically have facilitated diffusion with a mean ADC value of 1620 +/- 330 x 10-6 mm2/s according to one study 1. In contrast, WHO grade 1 meningiomas, non-chordoid grade 2 tumours and grade 3 tumours all have more pronounced diffusion restriction, similar or lower to brain parenchyma (around 800 x 10-6 mm2/s)."
"The most helpful MRI feature in distinguishing a chordoid meningiomas from other histological variants are their diffusion characteristics. They typically have facilitated diffusion with a mean ADC value of 1620 +/- 330 x 10-6 mm2/s according to one study 1. In contrast, WHO grade 1 meningiomas, non-chordoid grade 2 tumours and grade 3 tumours all have more pronounced diffusion restriction, similar or lower to brain parenchyma (around 800 x 10-6 mm2/s)."
"The most helpful MRI feature in distinguishing a chordoid meningiomas from other histological variants are their diffusion characteristics. They typically have facilitated diffusion with a mean ADC value of 1620 +/- 330 x 10-6 mm2/s according to one study 1. In contrast, WHO grade 1 meningiomas, non-chordoid grade 2 tumours and grade 3 tumours all have more pronounced diffusion restriction, similar or lower to brain parenchyma (around 800 x 10-6 mm2/s)."
"The most helpful MRI feature in distinguishing a chordoid meningiomas from other histological variants are their diffusion characteristics. They typically have facilitated diffusion with a mean ADC value of 1620 +/- 330 x 10-6 mm2/s according to one study 1. In contrast, WHO grade 1 meningiomas, non-chordoid grade 2 tumours and grade 3 tumours all have more pronounced diffusion restriction, similar or lower to brain parenchyma (around 800 x 10-6 mm2/s)."
"Chordoid tumours are usually vimentin EMA positive, and GFAP negative 5."
"Chordoid tumours are usually vimentin EMA positive, and GFAP negative 5."
"The most helpful MRI feature in distinguishing a chordoid meningiomas from other histological variants are their diffusion characteristics. They typically have facilitated diffusion with a mean ADC value of 1620 +/- 330 x 10-6 mm2/s according to one study 1. In contrast, WHO grade 1 meningiomas, non-chordoid grade 2 tumours and grade 3 tumours all have more pronounced diffusion restriction, similar or lower to brain parenchyma (around 800 x 10-6 mm2/s)."