Objective: To measure the susceptibility of cerebral micro-hemorrhage (CMBs) in patients with essential hypertension (EH) by QSM sequence, and to explore the value of QSM sequence in CMBs of EH patients. Methods: Routine sequence scanning and QSM sequence scanning were performed in 33 patients wi...
Brain MRI exams were done on a 3T magnet, including FLAIR, T2 GRE sequences and SWI. Results: Four males were included (mean age: 47 years, mean PML duration: 24.2 months). Immunosuppression was related to AIDS (n=2), natalizumab for multiple sclerosis (n=1), B-cell lymphoma treated ...
For deep learning-based QSM methods, check out the other github repo:deepMRI The repository is for reconstructing Quantitative Susceptibility Mapping (QSM) images from MRI. The codes cover image recons for single-echo SWI or multiple-echo GRE sequence as well as gradient EPI sequence. ...
The QSM DICOM folder must include DICOMS for both GRE magnitude and phase. T2* DICOMS that are sometimes saved as part of a GRE sequence can be present in the QSM DICOM folder and will be ignored. Preferably only DICOMS should be present in the QSM DICOM folder. However, Ironsmith can...
High-resolution anatomy of the human brain stem using 7-T MRI: improved detection of inner structures and nerves? and 7T were performed in two additional subjects using the finalized sequences (3T: T2, PD, MPRAGE, SWAN; 7T: 3D T2, MPRAGE, SWI, MP2RAGE). ... ER Gizewski,S Mader...
Renal MRIFunctional renal imagingObjective To evaluate the feasibility of in-vivo quantitative susceptibility mapping (QSM) of the human kidney.Methods An axial single-breath-hold 3D multi-echo sequence (acquisition time 33 s) was completed on a 3 T-MRI-scanner (Magnetom Prisma, Siemens ...
Methods: Ten healthy volunteers were scanned with harmonised single- and multi-echo T2*-weighted gradient echo pulse sequences. Participants were scanned five times at each "home" site and once at each of four other sites. The five sites had 1x Philips, 2x Siemens Magnetom, and 2x Siemens ...
Methods We used a navigator imbedded in a multi-gradient-echo sequence to record and correct MR signal phase fluctuations at each phase encoding step. All GEPCI, QSM, and SWI images were then reconstructed from a single acquisition. We used a keyhole-type approach to further average out ...
MR sequences for differentiating CMBs from calcification.Under IRB approved exempt retrospective protocol, 49adult patients with identifiable intracranial hemorrhage who underwent multi-echo 3D Gradient Recall Echo (GRE) using 3T MRI were non-sequentially recruited under aretrospective IRB approved protocol....