Gadoterate meglumine
It is a chelate of the rare earth metal gadolinium and the organic ligand meglumine.
Gadoterate meglumine enhances the visualization of internal body structures by increasing the contrast between different tissues.
It is commonly used to detect and evaluate a variety of conditions, including brain and spinal cord lesions, tumors, and vascular abnormalities.
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Most cited protocols related to «Gadoterate meglumine»
All 42 patients were examined by an ocular oncologist, and the final diagnosis was made on the basis of fundoscopic, fluorescein angiographic, and ultrasonographic findings, prior to the MRI examination.
The mean age of all subjects was 62 years (range 24–90) and 69% were male. In 61% of the patients, the lesion was localized in the right eye. The clinical American Joint Committee of Cancer T-Stage of the UM was T1 in 29%, T2 in 31%, T3 in 31%, and T4 in 9%. Regarding treatment, 45% of the cases received ruthenium brachytherapy, 21% proton beam therapy, and 33% were enucleated. In one patient, the diagnosis was not clear, and, prior to the MRI, a biopsy was performed, disclosing a UM. In all 14 patients who underwent enucleation histopathology confirmed the clinical diagnosis of UM (Supplementary Table
All patients underwent a 3T MRI (wide bore Ingenia 3T, Philips Healthcare, Best, The Netherlands), using the ocular protocol that we previously developed [8 (link)], with minor adjustments: a higher resolution of the 3D TSE T1 sequences, diffusion weighted imaging (DWI) with B values only of 0 and 800 s/mm2, and a higher flip angle of the dynamic scan (Table
MRI scans’ parameters including both anatomical and functional sequences. The MS and DWI sequences are acquired perpendicular to the main axis of the tumor. The 3D TSE and DCE sequences are acquired on the axial plane non-angulated. During the DCE scan, intravenous administration of 0.1 mmol/kg gadoterate meglumine (gd-DOTA, DOTAREM, Guerbet, Roissy CdG Cedex, France) is administered and afterwards, the contrast-enhanced (Gd) scans are acquired
Purpose | Scan name | Voxel size (mm3) | Echo train length | TE(ms)/TR(ms)/Flip or ref. angle (deg) | Fat supr. | Scan time (mm:ss) | Additional parameters |
---|---|---|---|---|---|---|---|
3D measurements | 0.8×0.8×0.8 | 20 | 26/400/90 | - | 02:07 | ||
0.8×0.8×0.8 | 20 | 26/400/90 | SPIR | 02:07 | |||
0.8×0.8×0.8 | 117 | 305/2500/35 | SPIR | 02:58 | |||
0.8×0.8×0.8 | 20 | 26/400/90 | SPIR | 02:07 | |||
Tumor origin and extension | 0.5×0.5×2.0 | 6 | 8/718/180 | - | 01:16 | ||
0.4×0.4×2.0 | 17 | 90/1331/120 | - | 01:25 | |||
0.5×0.5×2.0 | 6 | 80/764/180 | SPIR | 01:16 | |||
Functional scans | 1.25×1.4×2.4 | Single shot | 50/1555/50 | SPIR | 01:33 | B=0.800 s/mm2 | |
1.25×1.5×1.5 | 2.3/4.5/13 | Proset 11 | 04:20 | 2 s/dynamic |
MRI ocular protocol. Uveal melanoma of the left eye (white arrow) with associated retinal detachment (green arrow). ADC of 1.4 × 10−3 mm2/s. Wash-out time-intensity curve at DCE.
Most recents protocols related to «Gadoterate meglumine»
MRI was performed 4 h after the intravenous administration of gadoterate meglumine (0.2 mmol/kg) with an isotropic (0.7 mm voxel) high-resolution three-dimensional inversion recovery (IR) sequence with real reconstruction. An additional T2-weighted sampling perfection with application-optimised contrasts using different flip angle evolution (SPACE) sequences was performed. Siemens product sequences were used with parameters as set out in Table 2.
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More about "Gadoterate meglumine"
It is a chelate of the rare earth metal gadolinium and the organic ligand meglumine.
Gadoterate meglumine, also known as Dotarem, enhances the visualization of internal body structures by increasing the contrast between different tissues.
It is commonly used to detect and evaluate a variety of conditions, including brain and spinal cord lesions, tumors, and vascular abnormalities.
The use of gadoterate meglumine in MRI scans can be optimized through the use of advanced imaging technologies like MAGNETOM Skyra, Ingenia, Magnetom Avanto, Achieva, and Magnetom Aera.
These state-of-the-art MRI systems, developed by leading manufacturers like Siemens, can provide high-quality images and improve the accuracy of diagnoses.
In addition to gadoterate meglumine, other gadolinium-based contrast agents like Omniscan and Gadovist are also used in MRI procedures.
These agents can help enhance the visualization of various anatomical structures and pathologies, aiding in the early detection and management of a wide range of medical conditions.
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