4.1 | Spectrum analysis
The results of t -test showed that there was a significant
difference between nasal polyps and normal brain tissue in the same
side. The analysis of 3.0T1H-MRS can get the biochemical metabolism
information of clinical value: Ace(11.43 ± 6.11), NAA (17.76 ± 6.20),
Cho (23.19 ± 6.91), Lac (12.51 ± 3.42), Lac / Ace (1.09 ± 0.56); Cho /
NAA (1.34 ± 1.10), Lac / NAA (0.70 ± 0.55).The results showed that Ace
increased and was the most obvious, Cho increased, lac increased and NAA
decreased, Lac / Ace ratio decreased the most obvious, Cho / NAA ratio
increased and was more obvious, Lac / NAA ratio increased. This
explains. Nasal polyps have their own biochemical characteristics. If we
grasp the biochemical characteristics of nasal polyps in clinical
practice, we can carry out the differential diagnosis of nasal polyps by
doing 3.0T1H-MRS, which lays a good foundation for
non-invasive non-pathological diagnosis of nasal polyps.
3.0T1H-MRS has obvious advantages in imaging compared
with the conventional low field MR spectrum. It can not only collect the
single voxel during imaging, but also collect the multi voxel, and
effectively control the accuracy and stability of the spectral baseline.
3.0T1H-MRS can effectively analyze the change
characteristics of metabolites from both qualitative and quantitative
perspectives, so as to analyze and judge the patient’s condition1-5. MRS uses magnetic resonance phenomenon and
chemical shift to define the molecular composition, which is noninvasive
and can show the metabolite composition in brain tissue6.