RT Journal Article
SR Electronic
T1 Visualizing the Habenula Using 3T High-Resolution MP2RAGE and QSM: A Preliminary Study
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 504
OP 510
DO 10.3174/ajnr.A8156
VO 45
IS 4
A1 Bian, BingYang
A1 Hou, Lin
A1 Chai, YaTing
A1 Jiang, YueLuan
A1 Pan, XingChen
A1 Sun, Yang
A1 Wang, HongChao
A1 Qiu, DongDong
A1 Yu, ZeChen
A1 Zhao, Hua
A1 Zhang, HuiMao
A1 Meng, FanYang
A1 Zhang, Lei
YR 2024
UL http://www.ajnr.org/content/45/4/504.abstract
AB BACKGROUND AND PURPOSE: The habenula is a key node in the regulation of emotion-related behavior. Accurate visualization of the habenula and its reliable quantitative analysis is vital for the assessment of psychiatric disorders. To obtain high-contrast habenula images and allow them to be compatible with clinical applications, this preliminary study compared 3T MP2RAGE and quantitative susceptibility mapping with MPRAGE by evaluating the habenula segmentation performance.MATERIALS AND METHODS: Ten healthy volunteers were scanned twice with 3T MPRAGE and MP2RAGE and once with quantitative susceptibility mapping. Image quality and visibility of habenula anatomic features were analyzed by 3 radiologists using a 5-point scale. Contrast assessments of the habenula and thalamus were also performed. The reproducibility of the habenula volume from MPRAGE and MP2RAGE was evaluated by manual segmentation and the Multiple Automatically Generated Template brain segmentation algorithm (MAGeTbrain). T1 values and susceptibility were measured in the whole habenula and habenula geometric subregion using MP2RAGE T1-mapping and quantitative susceptibility mapping.RESULTS: The 3T MP2RAGE and quantitative susceptibility mapping demonstrated clear boundaries and anatomic features of the habenula compared with MPRAGE, with a higher SNR and contrast-to-noise ratio (all P < .05). Additionally, 3T MP2RAGE provided reliable habenula manual and MAGeTbrain segmentation volume estimates with greater reproducibility. T1-mapping derived from MP2RAGE was highly reliable, and susceptibility contrast was highly nonuniform within the habenula.CONCLUSIONS: We identified an optimized sequence combination (3T MP2RAGE combined with quantitative susceptibility mapping) that may be useful for enhancing habenula visualization and yielding more reliable quantitative data.CNRcontrast-to-noise ratioCOVcoefficient of variationFGATIRfast gray matter acquisition T1 inversion recoveryGREgradient recalled-echoHbhabenulaICCintraclass correlation coefficientMAGeTbrainMultiple Automatically Generated Template brain segmentation algorithmMDDmajor depressive disorderQSMquantitative susceptibility mappingUNIuniform T1-weighted image