One hundred patients with normal MRI findings of the inner ear and clear images of the semicircular canal and eyeball bottom were selected. The presence of local lesions that might affect the anatomical structure of the semicircular canals and the abnormal cranial structure was excluded. Using Siemens 1.5 T superconducting magnetic resonance system and standard head coil for inner ear examination. 3D constructive interference in steady state sequence (3D-CISS) (TR: 6.0 ms, TE: 2.7 ms, Fov: 135 mm × 180 mm, Marix: 256 × 192, Thickness: 0.7 mm) was performed (9 (link)).
1.5 t superconducting magnetic resonance system
Manufactured by Siemens
The 1.5 T superconducting magnetic resonance system is a core laboratory equipment designed to generate a strong and stable magnetic field for various scientific and medical applications. It utilizes superconducting technology to produce a 1.5 Tesla magnetic field, which is a standard strength used in many imaging and analysis techniques.
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Lab products found in correlation
4 protocols using 1.5 t superconducting magnetic resonance system
1
Magnetic Resonance Imaging of Semicircular Canals
2
Quantitative MRI Biomarkers for Tumor Characterization
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The ADC and IER values were measured in a Siemens 1.5 T superconducting magnetic resonance system. First, DWI images with 0 s/mm2 and 1,000 s/mm2 were input into the workstation and ADC maps were generated by calculating the ADC maps, avoiding the cystic and necrotic areas of the tumour that were visible to the naked eye and outlining the ROI. The ADC values obtained from the measurements made by the two physicians who were examining the tumour were recorded as ADC1 and ADC2, and the average of the two measurements was taken to be the ADC value of the cancer foci. After inputting the DCE image into the workstation, avoiding the cystic and necrotic areas of the tumour visible to the naked eye and sketching the ROI in the most obvious part of the tumour enhancement, the IER values measured by the two physicians on the DCE image were recorded as IER1 and IER2, and the average of the two measurements was recorded as the IER value of the cancerous foci. The formula for calculating the IER was as follows:
where SI baseline and SI post (3 min) represent the signal enhancement before contrast injection and the peak signal intensity within 3 min after contrast injection, respectively.
where SI baseline and SI post (3 min) represent the signal enhancement before contrast injection and the peak signal intensity within 3 min after contrast injection, respectively.
3
3D Labyrinth Reconstruction from MRI
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Thirty-three patients, including 9 males and 24 females, aged from 7 to 66 (43 ± 13.4) years, with normal MRI findings of the inner ear and clear images of semicircular canal and eyeball bottom were selected.
The presence of local lesions that might affect the anatomical structure of the semicircular canals and the abnormal cranial structure was excluded. Using Siemens 1.5 T superconducting magnetic resonance system and standard head coil for inner ear examination. 3D constructive interference in steady state sequence(3D-CISS) (TR: 6.0 ms, TE: 2.7 ms, FOV: 135 mm  180 mm, Matrix: 256  192, Thickness: 0.7 mm) was performed. Micro-CT scan data segmentation was used to obtain the left lateral membrane labyrinth model and the bone labyrinth model, including the crista model.
The presence of local lesions that might affect the anatomical structure of the semicircular canals and the abnormal cranial structure was excluded. Using Siemens 1.5 T superconducting magnetic resonance system and standard head coil for inner ear examination. 3D constructive interference in steady state sequence(3D-CISS) (TR: 6.0 ms, TE: 2.7 ms, FOV: 135 mm  180 mm, Matrix: 256  192, Thickness: 0.7 mm) was performed. Micro-CT scan data segmentation was used to obtain the left lateral membrane labyrinth model and the bone labyrinth model, including the crista model.
4
3D-CISS Imaging for Inner Ear Examination
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Using Siemens 1.5T superconducting magnetic resonance system and standard head coil for inner ear examination. 3D constructive interference insteady state sequence(3D-CISS) (TR: 6.0ms, TE: 2.7ms, FOV:135mmX180mm, Matrix: 256X192, Thickness: 0.7mm) was performed.
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