How reliable is a CT-brain scan with contrast in showing MS lesions as enhancing lesions in the presence of a contraindication to use MRI? Magnetic Resonance Imaging: Magnetic resonance imaging is a non-encroaching imaging procedure t...
Deep Learning Enables Reduced Gadolinium Dose for Contrast-Enhanced Brain MRI (Journal of Magnetic Resonance Imaging 2018) 这是一篇医学图像增强的论文,介绍了研究人员正在使用人工智能来减少MRI检查后留在体内的造影剂的剂量。 提出背景 钆(gá,gadolinium)是一种用于对比材料的重金属,可增强MRI上的图像,作为一...
Butler AR, Passalaqua AM, Berenstein A, Kricheff II (1978) The contrast-enhanced CT scan and the radionuclide brain scan: Parallel mechanismus of action in the detection of supratentorial astrocytomas. Neuroradiology 16:491–494 PubMed CAS Google Scholar Chan RC, Thompson GB, Durity FA (198...
recorded images with different contrasts at 0.56 mm resolution using fast spiral non-Cartesian sampling trajectories48(Fig.5g): quantitative T1 and T2 maps, derived magnetization prepared-rapid GRE and double inversion recovery images. The entire set of multicontrast images were acquired in 4 m...
The results of these simulations were used to build a prototype, which was tested in a gel phantom during an MRI scan. Measurement results showed a three-fold decrease in heating when compared to a commercially available DBS lead. Accordingly, the proposed design may allow a significantly ...
MRIregistrationimage processingbrainscan acquisitionautomaticDiagnostic brain MRI scans are usually performed by trained medical technologists who manually prescribe the position and orientation of a scanning volume. In this study, a fully automatic computer algorithm is described which compensates for ...
An MRI chest with and without contrast may be helpful in looking for “skip” metastases in the bone or for soft tissue edema extent when planning oncologic resection margins. • Chondrosarcoma—whole-body bone scan is recommended, in addition to the CT Chest. An MRI chest with and without...
) were performed on our 0.055 T MRI scanner, when implementing FSE and EPI sequences. FSE and EPI are the most common sequences in high-field clinical MRI. We optimized the four scan protocols for both image SNR and contrast characteristics similar to those of clinical high-field MRI....
All scanning sessions took place in a 3 T MRI scanner (Siemens, Prisma) with a 64-channel head coil in the ATR Brain Activation Imaging Centre. Gradient T2*-weighted EPI (echoplanar) functional images with blood-oxygen-level-dependent (BOLD)-sensitive contrast and multi-band acceleration ...
a pixel-level semantic segmentation method using 3D-UNet is proposed to realize the automatic segmentation of the brain hippocampus from MRI results. Methods: Two hundred three-dimensional T1-weighted (3D-T1) nongadolinium contrast-enhanced magnetic resonance (MR) images were acquired at Hangzhou Canc...