(persistent, plateau, or washout), signal intensity of T1 and T2, (high, equal, or low), DWI (high or low), and ADC value according to the Breast Imaging Reporting and Data System MRI lexicon Perinodular features of MP-MRI contained breast density and background parenchymal enhancement (...
Among this population, 244 of them underwent both preoperative PET/CT and breast MRI, while the remaining 31 patients received PET/CT alone (Fig. 1). The mean age of the patients was 57.5 ± 12.7 years in the PET/CT group (N = 275) and 56.7 ± 12.5 years in the ...
Fourteen patients with clinically suspected carious lesions, verified by standardized dental examination including DR and OPT, were imaged with 3D isotropic T2-weighted STIR (short tau inversion recovery) and T1 FFE Black bone sequences. Intensities of dental caries, hard tissue and pulp were ...
Acronyms: NAWM, normal-appearing white matter; SD, standard deviation; GM, grey matter; T1/T2, T1-T2 ratio. Full size image Fig. 2: Subtype membership in the training, and validation datasets. a MRI-based subtypes in the training and internal validation dataset and b the validation dataset...
基于MRI增强绝对梯度纹理分析对垂体瘤质地术前评估的可行性分析
trains (Fig.1b). This ensures a favorable point-spread function to prevent blurring of the thin vessel wall. Naturally, this can only be achieved for specific values of T1 and T2, and the exact choice of flip angle scheme will always be a trade-off between tissue contrast and ...
(longitudinal) and T2 (transversal) relaxation times of surrounding water protons to indirectly produce a signal-enhancing effect [25]. The efficiency of an agent to shorten relaxation times is called relaxivity, which is dependent on the ligand surrounding the Gd3+ion (see later) and influenced ...
The median mean absolute errors were around 76 HU for the brain and H&N sCTs and 40 HU for the pelvis sCTs. For the brain, the mean dose difference between the sCT and the reference CT was <2%. For the H&N and pelvis, the mean dose difference was below 1% in most of the studies...
We used either T1- (longitudinal relaxation time) or T2- (transverse relaxation time)-weighted images to obtain the optimal image resolution and quality. Measurement level was adjusted to the lumbar vertebra 4 (L4) superior endplate level from which the axial scans were projected (Fig. 1). ...
protocols (T1- and T2-weighted, fluid-attenuated inversion recovery like, and diffusion-weighted imaging) on this system, and demonstrate preliminary feasibility in diagnosing brain tumor and stroke. Such technology has the potential to meet clinical needs at point of care or in low and middle...