All data were transferred to GE AW 4.6 workstation (GE Healthcare, Milwaukee, WI, USA), and interpreted by two radiologists with 6 and 10 years of experience in gastrointestinal radiology. Data analysis was carried out independently using GSI Viewer software (GE Healthcare, Milwaukee, WI, USA) with a standard soft-tissue window (WL 40 and WW 400). Regions of interest (ROI) were drawn on the solid part of the tumor (about two-thirds of the area), with the exclusion of peripheral fat, visible vessel, calcification and cystic/necrotic areas. A circular ROI was placed into the aortic arch within the same CT slice, after the exclusion of calcified atherosclerotic plaque. Subsequently, the thickness of tumour was measured and recorded. In order to reduce the individual variation between patients, IC value was normalized by dividing the IC of lesion to that of aorta (nIC=IClesion/ICaorta) [12 (link)]. All IC values were repeatedly measured three times, and the average value was then calculated. Similarly, ROI of the three gastric regions (fundus, body and antrum) was measured for three times, and their average values were calculated.
Ge aw 4.6 workstation
Manufactured by GE Healthcare
Sourced in United States
The GE AW 4.6 workstation is a diagnostic imaging software platform designed to assist healthcare professionals in the analysis and interpretation of medical images. The workstation provides tools for visualization, processing, and manipulation of various imaging modalities, including CT, MRI, and PET scans.
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Lab products found in correlation
4 protocols using ge aw 4.6 workstation
1
Imaging Analysis of Gastric Tumors
2
Quantitative Susceptibility Mapping of Brain Nuclei
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In the present study, the caudate nucleus (Cd), putamen (Pt), and globus pallidus (Gp) were selected as the regions of interest (ROIs) (Figure 1A ). Firstly, the GRE quantitative susceptibility mapping was co-registered to the 3D T1WI, which is to better define the boundaries of each gray nucleus. The ROIs were then manually segmented by two radiologists (Lei Du, 5 years of working experience; Yue Chen, 2 years of working experience) slice by slice using the FuncTool on a GE AW4.6 workstation (GE Healthcare, Milwaukee, WI). They were blinded to clinical and MR imaging information. The susceptibility value and size of three successive slices were acquired in each ROI to eliminate the effects of the occasional case. Also, the average susceptibility values of each ROI were calculated. The unit of susceptibility value was parts per million (ppm).
3
PET/CT Tumor Quantification Protocol
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Transmitting all 18F-FDG PET/CT images to GE AW4.6 workstation (GE Healthcare, USA), 2 radiologists with more than 5 years of radiodiagnostic experience used PET volume computer-assisted reading (PET VCAR) software to perform imaging analysis. After outline of a lesion region of interest (ROI) at the cross-sectional level of the largest area of the tumor, the fused-PET software automatically calculated SUVmean, SUVmax, MTV and TLG of the entire tumor. MTV was calculated by a 40% SUVmax threshold (27 (link), 28 (link)).
4
PET/CT Imaging of Prostate Cancer
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Imaging examination was performed by the whole-body PET/CT imaging (GE Discovery Elite PET/CT, Boston, MA, USA), which has the characteristics of fast acquisition time and high resolution. It can quickly and accurately detect millimeter-level lesions and evaluate the therapeutic effect with ligand of 68Ga-PSMA (radiochemical purity 92%–98%; provided by Guangzhou Atom Hi-Tech Isotope Pharmaceutical Co., Ltd., Guangzhou, China). PET/CT imaging range is from the middle of the femur to the top of the head, 1 min and 40 s per bed. The CT acquisition conditions are as follows: the voltage of 120 kV, the electric current is automatically adjusted according to the machine's software (70–220 mA), the scan thickness is 3.75 mm, reconstruction of the attenuation correction sequence and the standard soft tissue algorithm sequence. The VUE Point FX algorithm (GE Healthcare, Boston, MA, USA) is used for obtaining transverse, coronal, and sagittal tomographic images and maximum intensity projection (MIP) images. On the GE AW 4.6 workstation (GE Healthcare), the standard phase and diuretic delay phase PET/CT fusion images are used to delineate the region of interest (ROI) of the lymph node lesions.
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