In our hospital, MR examination was performed using a 1.5-Tesla MR unit (Magnetom Avanto, Siemens). In the external hospital, one MR scan unit was a 3.0-Tesla machine (Ingenia 3.0 T, Philips), and another was a 1.5-Tesla MR unit (Optima MR 360, GE). The detailed scanning parameters for each unit are summarized in Supplementary Table 1 . The diagnosis for placental implantation on MRI was established based on the previous well-described criteria8 (link),15 (link). First, two observers (each had more than 7 years of PAS diagnosis on MRI) blinded to the US and surgical results analyzed all the MRI datasets of each participant independently on the PACS terminal server. Confidence in identifying the status of placenta accreta spectrum was assessed using a five-point scale as follows: ‘5’, definitely present; ‘4’, probably present; ‘3’, uncertain; ‘2’, probably absent; and ‘1’, definitely absent. Second, all conclusions required a consensus agreement between the two observers. All visible placental tissue was examined by an experienced radiologist (H.Z.) on sagittal T2WI using ITk-SNAP software (http://www.itksnap.org/pmwiki/pmwiki.php?n=Main.HomePage ).
Optima mr360
Manufactured by GE Healthcare
Sourced in United States, Germany
The Optima MR360 is a magnetic resonance imaging (MRI) system designed by GE Healthcare. It provides high-quality imaging capabilities for clinical applications. The Optima MR360 utilizes advanced MRI technology to capture detailed images of the body's internal structures.
Automatically generated - may contain errors
Lab products found in correlation
Discovery mr750, by GE Healthcare (4 mentions)
Optima mr360 1.5t, by GE Healthcare (2 mentions)
Magnetom espree, by Siemens (2 mentions)
Ingenia, by Philips (2 mentions)
Magnevist, by Bayer (2 mentions)
Signa hdxt, by GE Healthcare (2 mentions)
Aw4.6 workstation, by GE Healthcare (2 mentions)
Magnetom avanto, by Siemens (1 mentions)
Ingenia 3.0t, by Philips (1 mentions)
Signa excite, by GE Healthcare (1 mentions)
Lightspeed 16, by GE Healthcare (1 mentions)
Magnetom skyra 3t, by Siemens (1 mentions)
Aquilion prime, by Toshiba (1 mentions)
Acheiva, by Philips (1 mentions)
Signa hdx, by GE Healthcare (1 mentions)
Magnetom trio, by Siemens (1 mentions)
Magnetom sonata, by Siemens (1 mentions)
Achieva, by Philips (1 mentions)
Omniscan, by GE Healthcare (1 mentions)
Signa hd, by GE Healthcare (1 mentions)
41 protocols using optima mr360
1
Diagnostic MRI for Placental Implantation
2
Diagnostic Approach to Neurotuberculosis
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Patients underwent investigations that included routine blood counts, serum biochemistry, erythrocyte sedimentation rate, HIV serology, and chest radiograph. CSF was examined for opening pressure, cells (lymphocyte and neutrophil differential count), glucose, protein, acid-fast bacilli smear, culture, gene expert nucleic acid amplification test. India ink preparation was performed to exclude cryptococcal meningitis.
Brain MRI was performed on 1.5 T (Optima MR 360, General Electric Medical Systems, Wisconsin, United States) magnetic resonance imaging (MRI) system incorporating whole-brain axial fluid-attenuated inversion recovery, diffusion-weighted imaging (DWI), apparent diffusion coefficient (ADC), time-of-flight MRA in addition to T2-weighted and pre- and postgadolinium T1 weighted sequence. The patients were assessed for leptomeningeal enhancement, tuberculoma, cerebral infarction, hydrocephalus, ventriculitis, cranial nerve involvement, and significant stenosis in major cerebral arteries. Cerebral infarctions were recorded according to location and number. Stroke was diagnosed on the basis of DWI hyperintensity and corresponding hypointensity on ADC. MR angiographic abnormalities were characterized by greater than 50% stenosis of short or long segments of intracranial arteries.
11 (link)
Brain MRI was performed on 1.5 T (Optima MR 360, General Electric Medical Systems, Wisconsin, United States) magnetic resonance imaging (MRI) system incorporating whole-brain axial fluid-attenuated inversion recovery, diffusion-weighted imaging (DWI), apparent diffusion coefficient (ADC), time-of-flight MRA in addition to T2-weighted and pre- and postgadolinium T1 weighted sequence. The patients were assessed for leptomeningeal enhancement, tuberculoma, cerebral infarction, hydrocephalus, ventriculitis, cranial nerve involvement, and significant stenosis in major cerebral arteries. Cerebral infarctions were recorded according to location and number. Stroke was diagnosed on the basis of DWI hyperintensity and corresponding hypointensity on ADC. MR angiographic abnormalities were characterized by greater than 50% stenosis of short or long segments of intracranial arteries.
11 (link)
3
MRI Multimodal Brain Imaging Protocol
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T1WI and DTI scan was operated with 16-channel phased-array coil (GE3.0 T Optima MR360 imaging system). Scanning parameters for T1WI are TR/TE 12.3/5.1 ms, 256 × 256 matrix, FOV240mm × 240 mm, 1.4 mm thickness, 0 mm interval, and NEX 1 with Ax 3D BRAVO sequence. DTI scan used single excitation DW-SE-EPI sequence and parameters were set up on TR/TE 9000/100.1 ms, 128 × 128 matrix, FOV240mm × 240 mm, 1 collection, 25 diffusion sensitive gradient directions, b value =1000s/mm2, layer thickness and layer spacing of 2/0 mm, axial scanning. The scanning results were color-coded tensor FA and ADC imaging.
4
Multimodal MRI Imaging for Rectal Cancer Staging
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All patients received conventional MRI examinations at baseline (1–3 days before nCRT) and 8 weeks after the end of nCRT (i.e., 2–5 days before surgical resection). All MRI examinations were performed using a 1.5-Tesla MRI scanner (Optima® MR 360; GE Medical System, Milwaukee, WI) using a phased-array body coil. The conventional MRI protocol included the following: (1) axial T1-weighted fast spin-echo (FSE) images [time of repetition (TR), 4694 ms; time of echo (TE): 102 ms; slice thickness: 5 mm; intersection space: 1 mm; field of view (FOV): 380 mm; acquisition matrix: 320 × 224; number of excitations (NEX): 2]; (2) axial T2-weighted FSE images [TR: 4435 ms; TE: 102 MS; slice thickness: 5 mm; intersection space: 1 mm; FOV: 380 mm; acquisition matrix: 320 × 224; NEX: 2]; (3) high-resolution T2-weighted FSE images perpendicular to the longitudinal axis of the rectal tumour [TR: 4500 ms; TE: 102 ms; slice thickness: 3 mm; intersection space: 0.5 mm; FOV: 256 mm; matrix: 200 × 200; NEX: 4]; (4) sagittal high-resolution T2-weighted FSE images [TR: 4500 ms; TE: 102 ms; slice thickness: 3 mm; intersection space: 0.5 mm; FOV: 256 mm; matrix: 200 × 200, NEX: 4].
5
Standardized Multiparametric MRI Protocol
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All patients were scanned with a 1.5-Tesla MR (Optima MR 360, GE Medical Systems, USA) using an eight-element body array coil with fixed image protocols. The scanning sequences consisted of T1w, T2w, DWI (two b-values including 0 and 800 s/mm2), and CE-T1w. The technical MRI parameters are listed in Supplementary Table A2 .
6
Multi-Modal Abdominal Imaging Protocol
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Patients at our institution underwent routine medical imaging scans of the abdomen, including non-contrast CT, dynamic contrast-enhanced CT (CECT), MRCP, unenhanced MRI (routine T1-, and axial and coronal T2-weighted images), DWI with corresponding apparent diffusion coefficient (ADC) maps, and dynamic contrast-enhanced (DCE) MRI. Examinations were performed using three CT (LightSpeed16, GE, USA; Aquilion ONE, TOSHIBA, Tokyo, Japan; Aquilion PRIME, TOSHIBA, Tokyo, Japan) and four MRI scanners (1.5 T Signa Excite, GE, USA; 1.5 T Optima MR360, GE, USA; 3.0 T Discovery MR750, GE, USA; 3 T MAGNETOM Skyra, Siemens, Munich, Germany).
DCE-MRI was not utilized with children; the optimal CT protocol utilized with children was based on age and weight. Radiation doses were below the weight-specific diagnostic reference levels (DRLs) recommended in Radiation Protection No. 185 [39 (link)].
DCE-MRI was not utilized with children; the optimal CT protocol utilized with children was based on age and weight. Radiation doses were below the weight-specific diagnostic reference levels (DRLs) recommended in Radiation Protection No. 185 [39 (link)].
7
Multiparametric MRI Protocol for Musculoskeletal Imaging
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MRI was performed on a 1.5 T unit (OPTIMA MR360, GE Medical Systems, Milwaukee, WI) using an 8-channel phased-array coil. Patients were imaged supine, with their feet entering the magnet bore first. The MRI screening sequences were as follows: axial T1-weighed fast spin-echo (FSE) imaging, axial and sagittal T2W FSE imaging with fat suppression, sagittal T2W FSE imaging without fat suppression, diffusion-weighted imaging (DWI), and coronal 3D-CUBE imaging. The protocol of the MRI sequences is summarized in Table 1 . Gadolinium was not administered in any cases.
The protocol of the MRI sequences
| Imaging parameters | T2-weighted FSE | T1-weighted FSE | DWI(b = 800) | CubeT2-weighted | |
|---|---|---|---|---|---|
| Axial | Sagittal FSE and FRFSE | Axial | Axial | Coronal | |
| TR(ms)/TE(ms) | 3500–4000/100–130 | 3500–4000/100–130 | 400–45/10–15 | 4000/64 | 2000/91–95 |
| section thickness(mm) | 5 | 5 | 5 | 6 | 1.6 |
| Intersection gap(mm) | 1.5 | 1 | 1.5 | 2 | 0 |
| Field of view(mm) | 320 | 260 | 320 | 320 | 240 |
| Matrix | 320 × 240 | 288 × 192 | 320 × 240 | 128 × 128 | 228 × 228 |
| Number of acquisitions | 4 | 2 | 4 | 4 | 1 |
TR time of repetition, TE time of echo, FSE fast spin-echo, FRFSE fast recovery fast spin echo, DWI diffusion weighted imaging
8
MRI Protocol for Cancer Treatment Monitoring
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The MRI examinations were performed on a 1.5-Tesla MRI scanner (Optima MR360, GE Healthcare, Milwaukee, WI) at baseline, after the first cycle of IC, at the end of CRT, and 6 months after the end of CRT. The imaging protocols included axial T1-weighted spin-echo images (repetition time [TR]/echo time [TE] 580/7.8 ms, slice number 36, slice thickness 5 mm, slice space 1 mm, number of excitations [NEX] 2, scan time 1 minute 53 seconds) and axial T2-weighted spin-echo images with fat suppression (TR/TE 6289 ms/85 ms, slice number 36, slice thickness 5 mm, slice space 1 mm, NEX 2, scan time 1 minute 35 seconds).
9
Abdominal MRI Imaging Protocol
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MR images were acquired using a GE Optima MR360 1.5T (Optima MR360, GE Healthcare, USA) equipped with an eight-channel abdominal coil. Patients fasted for four hours before the scan. Baseline MRI included T1-weighted turbo field-echo in-phase and opposed sequence (T1WI), Fat -suppressed T2-weighted images (Fs-T2WI). Diffusion-weighted imaging (DWI) was obtained by respiratory-triggered single-shot echo with b-values of 0 and 600 s/mm2.
Gadolinium meglumine acid (Gd‐DTPA) with a total dose of 0.1 mmoL/kg was injected into the median cubitus vein at a rate of 2.0 mL/s with a high-pressure syringe washing with 20 mL of normal saline. The arterial phase (AP), portal venous phase (PVP), and delay phase (DP) scans were performed 20–30 s, 50–60 s, and 90–120 s after the injection of Gd‐DTPA, respectively. Detailed scanner and scan parameters can be found inSupplementary Table 1
Gadolinium meglumine acid (Gd‐DTPA) with a total dose of 0.1 mmoL/kg was injected into the median cubitus vein at a rate of 2.0 mL/s with a high-pressure syringe washing with 20 mL of normal saline. The arterial phase (AP), portal venous phase (PVP), and delay phase (DP) scans were performed 20–30 s, 50–60 s, and 90–120 s after the injection of Gd‐DTPA, respectively. Detailed scanner and scan parameters can be found in
10
Multimodal MRI Acquisition Protocol
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MRI scans were acquired using one of four MRI scanners, including two of 3.0-Tesla (Discovery MR750, General Electric Medical Systems, Chicago, IL, USA and Acheiva, Philips Medical Systems, Best, Netherlands) and two of 1.5-Tesla (MAGNETOM Espree, Siemens, Germany and Optima MR360, General Electric Medical Systems, Chicago, IL, USA). Nearly three quarters (73.8%) of the MRI data were acquired with 3.0T. 2D T2-weighted images (T2WI) were used for evaluation, which were acquired with the same resolution as with the T1-weighted images in this dataset. Parameter settings were: TR/TE = 2500–5600/90–110 ms, flip angle = 90° or 140–160°, field of view = 230 × 230 mm, matrix = 180 × 256, slice thickness = 5.0 mm no gap, 24 axial slices to cover the whole brain.
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