Anatomical, DWI, and DSC perfusion MRI were obtained on 1.5T or 3T MRI scanners (Siemens Healthcare; Erlangen, Germany). Anatomical MRI, including 3D pre- and post-contrast (gadolinium-diethylenetriamine pentaacetic acid at a dose of 0.1 mmoL/kg body weight; Magnevist, Bayer Schering Pharma, Leverkusen, Germany) T1-weighted images, axial T2-weighted images, fluid-attenuated inversion recovery (FLAIR), and DWI images were collected according to the international standardized brain tumor imaging protocol.35 (link) For DSC perfusion MRI, images were collected according to previously described imaging protocols.36 (link),37 (link) All DSC-MRI acquisitions covered the volume of contrast-enhancing and non-enhancing tumors.
1.5t or 3t mri scanners
Manufactured by Siemens
Sourced in Germany
1.5T or 3T MRI scanners are medical imaging devices that use a strong magnetic field and radio waves to generate detailed images of the body's internal structures. These scanners can produce high-resolution images of organs, tissues, and other anatomical features, which can be used for diagnostic and treatment purposes. The core function of these scanners is to provide healthcare professionals with the necessary information to make informed decisions about a patient's condition and treatment plan.
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Lab products found in correlation
3 protocols using 1.5t or 3t mri scanners
1
Multimodal Brain Tumor MRI Imaging Protocol
2
Multimodal Brain Tumor Imaging Protocol
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Anatomical, diffusion, and DSC perfusion MRI were obtained on 1.5T or 3T MRI scanners (Siemens Healthcare; Erlangen, Germany). Anatomical MRI and diffusion-weighted imaging (DWI) were collected according to the international standardized brain tumor imaging protocol (BTIP) [30 (link)]. ADC maps were calculated from either DWI or diffusion tensor imaging (DTI) data with b-values of 0 and 1000 s/mm2. For DSC perfusion MRI, images were collected according to previously described single-echo and multi-echo imaging protocols [31 (link)–33 (link)]. DSC data were first motion corrected using FSL (mcflirt; Functional Magnetic Resonance Imaging of the Brain Software Library; Oxford, England), and a bidirectional contrast agent leakage correction method was used to calculate rCBV maps [34 (link)]. All parameter maps were registered to the post-contrast T1-weighted images (1-mm isotropic resolution) using a six-degree-of-freedom rigid transformation and a mutual information cost function using FSL software (flirt).
3
Brain Tumor MRI Imaging Protocol
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