Hippocampo-Horn Percentage (Hip-hop) on Brain Magnetic
Resonance Imaging
Instructions are under preparation
Parietal Atrophy Score (PAS) on Brain Magnetic Resonance
Imaging
The Parietal Atrophy Score on brain magnetic resonance imaging
is a reliable visual scale. This is our visual scale that we
developed for a quick evaluation of parietal lobe structure on brain
MRI.
Our innovative approach named the Parietal Atrophy Score (PAS)
is based on a visual assessment of atrophy in three parietal
structures (sulcus cingularis posterior, precuneus, parietal gyri)
on multiple T1-weighted coronal slices in the range of whole
parietal lobes. Each structure is ranked 0 (a normal finding without
atrophy) or 1 (a borderline finding) or 2 (a prominent atrophy). The
assessment of one brain MRI using the PAS only takes about 1-2
minutes!
Four raters (a neurologist, a neuroanatomist, an expert in MRI
acquisition and a medical student) rated the same brain MRI images
using the PAS. We proved that PAS has almost perfect intra-rater and
substantial inter-rater reliability despite professional diversity,
different experience and training of raters. Even a medical student
with no previous MRI experience reliably scored using PAS after
short training.
We believe that the PAS is a quick, simple and reliable approach for
assessment of parietal lobe structure in routine clinical practice
which can be used in differential diagnosis of neurodegenerative
dementias, especially early-onset Alzheimer’s disease.
