Journal: BMC Medical Imaging

Article Title: Reproducibility of brain metabolite concentration measurements in lesion free white matter at 1.5 T

doi: 10.1186/s12880-015-0085-9

Figure Lengend Snippet: Fit ( red ) of the same data ( white ) calculated with protocol 5 resulting in a “flat” ( a ) and with protocol 18 with a “less flat” difference line ( green ) ( b ). The baseline is orange. χ 2 calculated by the post processing software was 3348 ( a ) and 5122 ( b ), respectively and is a little less than the mean values of Table . Image ( c ) shows the distorted Naa evaluation with NaaG as additional metabolite. A :, P : and W : are the amplitude of a metabolite, its frequency in ppm and its line width in Hz. Note: the lipid amplitudes inside healthy brain tissue are very small compared to that of tumors. In most cases, depending on the protocol, no or only one lipid line was detected. This is also documented by both protocols with the best reproducibility (protocol 14 and 18), which did not use lipid models

Article Snippet: This investigation concentrates on one post processing software package metabolite report [ , , ], mostly identical to the new product software “syngo via” from Siemens Healthcare (Erlangen, Germany) neglecting all aspects and discussions on acquisition schemes or comparisons to other post processing algorithms.

Techniques: Software