Chest CT imaging (field-of-view from the apex to the lung basis, including the chest wall and axilla) was performed on Toshiba Aquilion 16-slice CT and 64 detector CT system (GE Discovery CT750 HD or GE Light speed VCT, GE Healthcare)。All parameters were obtained from CT ordinary scan images and reconstructed using standard algorithms. Scanning parameters: GE LightSpeed VCT and GE Discovery CT750 CT equipment were applied with a tube voltage of 120 kV, tube current automatic regulation, layer thickness of 5.0 mm, reconstruction layer thickness of 0.625 mm, pitch 1.375; and the Toshiba Aquilion 16-slice CT equipment application was a tube voltage of 120 kV, tube current of 150 mA, layer thickness of 5.0 mm, reconstruction layer thickness of 1.0 mm, and pitch 0.980.
Ge lightspeed vct
Manufactured by GE Healthcare
Sourced in United States, Germany, United Kingdom
The GE LightSpeed VCT is a computed tomography (CT) scanner designed for use in healthcare settings. It provides high-speed, high-resolution imaging capabilities to support a variety of clinical applications. The core function of the GE LightSpeed VCT is to acquire and generate detailed cross-sectional images of the body's internal structures.
Automatically generated - may contain errors
Lab products found in correlation
Ge discovery ct750 hd, by GE Healthcare (5 mentions)
Somatom definition flash, by Siemens (4 mentions)
Ge discovery c1750, by GE Healthcare (4 mentions)
Aquilion 16 slice ct, by Toshiba (4 mentions)
Sensation 64, by Siemens (4 mentions)
Brilliance ict, by Philips (4 mentions)
Ge 750hd, by GE Healthcare (3 mentions)
Brilliance 64, by Philips (3 mentions)
Thoracic vcar software, by GE Healthcare (3 mentions)
Somatom definition as, by Siemens (3 mentions)
Ge discovery ct750, by GE Healthcare (2 mentions)
Ge revolution ct, by GE Healthcare (2 mentions)
Definition as, by Siemens (2 mentions)
Somatom force, by Siemens (2 mentions)
Iodixanol 270, by GE Healthcare (2 mentions)
Iopamidol 350, by Bracco (2 mentions)
Iobitridol 350, by Guerbet (2 mentions)
Iopromide 370, by Bayer (2 mentions)
Visipaque 320, by GE Healthcare (2 mentions)
Lightspeed vct, by GE Healthcare (2 mentions)
65 protocols using ge lightspeed vct
1
Thoracic CT Imaging Protocol
2
Low-Dose Chest CT for SARS-CoV-2 Detection
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Patients were positioned in supine position and asked to hold their breath in deep inspiration during image acquisition. Two different types of scanners were used at our institution, an 80-slice scanner (Aquilion Prime, Canon Medical Systems Cooperation, Otawara, Japan) and a 64-slice scanner (Lightspeed VCT, General Electric, Boston, Massachusetts, United States), to perform a low-dose examination of the chest in patients with suspected SARS-CoV-2 infection. The imaging protocol for the Canon Aquilion Prime was as follows: 0.27 s rotation time, 100 kV tube voltage, automatic modulation of tube current between 10 and 100 mA, a noise index of 27, pitch factor of 1.388, and a reconstructed slice thickness of 0.5 mm. For the GE Lightspeed VCT, rotation time was 0.35 s, 100 kV tube voltage, automatic tube current modulation between 10 and 100 mA, noise index of 30, pitch factor of 1.375, and a reconstructed slice thickness of 0.625 mm. Image reconstruction was performed using a lung- and soft-tissue kernel (Canon Aquilion Prime: Fc01 and Fc85, GE Lightspeed VCT “standard” and “lung”) and moderate iterative reconstruction.
3
Multimodal CT Imaging for Ischemic Stroke
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The data that support the findings of this study are available from the corresponding author upon reasonable request. We retrospectively reviewed the clinical and radiological features of consecutive patients with ischemic stroke or transient ischemic attack with completed multimodal CT imaging at Christchurch Hospital, a large endovascular thrombectomy capable tertiary hospital, over a 12-month period between September 2018 and August 2019. The local protocol has been described in detail elsewhere 8 and provides immediate multimodal CT imaging to previously functionally independent patients with clinical deficit within 24-hours of onset. The imaging protocol consists of noncontrast CT, followed by CT perfusion and CTA from aortic arch to vertex (detailed description in the Data Supplement). We modified the angiography protocol at the start of September 2018 by extending the scan-range 3 cm below the carina to include the LAA. All patients were examined using either a 128-slice (SOMATOM Definition Flash, Siemens Healthcare, Forchheim, Germany) or 64-slice (GE VCT Lightspeed, GE Healthcare, Waukesha WI) CT scanner.
4
Abdominopelvic CT-scan for Cyst Evaluation
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Then patients underwent abdominopelvic CT-scan without contrast (Medical Health Care GE VCT light speed, GE, USA). Technical features of CT were as following: 0.645 collimation, minimum slice thickness of 0.645, kV of 120, and mAs of 200 by Philips scanner. The least distance between cyst margin and the pyelocaliceal system was measured as cyst adjacent renal parenchymal diameter by a single expert radiologist [Figure 1 ].
All these variables were evaluated and compared before and 1 month after surgery.
All these variables were evaluated and compared before and 1 month after surgery.
5
Cardiac CT Angiography for Myocardial Bridging
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All cardiac computed tomography angiography (CCTA) scans were performed as retrospectively ECG‐gated scans of the heart, with slice thickness between 0.6 and 1 mm, and range from the tracheal bifurcation to the diaphragm. The reconstructed field of view was individually adjusted to encompass the heart. The CCTA images were originally acquired on the Siemens Somatom Definition, Siemens Somatom Definition Flash (Siemens, Forchheim, Germany), the GE Lightspeed VCT, and the GE Discovery HD750 (General Electric, Milwaukee, WI). All CCTA image data were reevaluated for research purposes as part of this analysis on an external workstation (SyngoVia, VA30A; Siemens Medical Solutions, Forchheim, Germany). The image quality of all computed tomography scans was adequate in all cases. Multiplanar and curved reformations were used for the assessment of MBs in long‐ and short‐axis planes. The thickness of the epicardial fat was measured above the MB segment as well as above and below the coronary artery proximal and distal to MB.
6
Multimodal Imaging Protocols for Diagnosis
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Diagnostic imaging included X-ray, computed tomography (CT) and magnetic resonance imaging (MRI). X-ray imaging was performed by digital radiography, and the CT scans were performed on either a GE (GE Lightspeed VCT, 64 slice, GE LightSpeed Pro, 32 slice, GE Discovery 750HD, General Electrics, Milwaukee, WI, USA) or a Siemens (SIEMENS Definition Flash Siemens AG, 128 slice) scanner. MRI scans were performed on a 1.5 T MR scanner (Discovery MR450, General Electrics, Milwaukee, WI, USA). The MRI image sequences were T1, T2 and STIR, of which at least one sequence was axial on the bone involved; contrast was only given in cases of soft tissue involvement, which was decided in each case by a radiology specialist. Bone scintigraphy (BS), single photon emission computed tomography CT (SPECT/CT), 18F-fluorodeoxyglucose positron emission tomography (FDG-PET/CT) and ultrasound (US) were excluded due the low number of combinations of those with another.
7
Thoracic CT Imaging Using Contrast
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The patients underwent multi-slice CT of the thorax using multislice CT (GE Lightspeed VCT (GE Healthcare, WI, USA) or Siemens Somatom Definition Flash (Siemens AG, Erlangen, Germany). All examinations were performed at 120 kV after intravenous contrast injection of Iomeron 400 mg I/ml (Bracco, Milan Italy) in both arterial and portal phase. The tube current was automatically modulated. The dosage of contrast media was 750 mg I/kg or 1000 mg I/kg. Slice thickness was 0.625 mm. The field of view was adjusted for patient size.
8
Kidney Imaging Protocol for CT Scans
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To perform scans on group 1 (n=46), a GE Light Speed VCT 64-slice CT scanner (GE Healthcare, Chicago, IL, USA) was used (120 kV, 200–380 mA). Three scan sequences of the standard scan were obtained for the arterial, parenchymal and excretory phases. For the first two phases, the scan range only consisted of the kidneys; for the excretory phase, the scan was performed from the kidneys to the symphysis pubis. The two sequences obtained during the arterial and parenchymal phases were deleted after the X-ray dose administered was measured. Only the excretory phase scan was used for group 2 (n=46).
9
Postoperative CT-Angiography of Mesenteric Vessels
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The CT-angiography of the mesenteric vessels was performed at the same time as the standard postoperative 1-year venous phase CT examination. CT systems used were Siemens Definition Flash (Siemens Healthineers, Erlangen, Germany), GE LightSpeed VCT (GE Healthcare, Milwaukee, WI, USA), GE Revolution CT (GE Healthcare, Milwaukee, WI, USA), and Siemens Definition AS (Siemens Healthineers, Erlangen, Germany). An angiography examination of the abdominal vessels was performed at each clinic and CT system, respectively; examination parameters were similar, providing a comparable radiation dose and image quality. Intravenous contrast enhancement with iodine contrast was administered using an individual dosage, by kilogram of body weight. Contrast was given via a high-pressure injector, where the injection rate was calculated using a dedicated computer program (OmniJect, GE). Details on CT manufacturer and respective survey parameters are summarized in Supplementary Table 1 . Immediately after the arterial phase, the usual venous follow-up examination was performed.
10
CT Imaging Protocol and Parameters
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CT examinations were performed on the following scanners: SOMATOM Definition Edge (n = 68), SOMATOM Definition AS+ (n = 52), SOMATOM Definition Flash (n = 86), SOMATOM Force (n = 3), Emotion 16 (n = 11) (all Siemens Healthcare), and GE LightSpeed VCT (n = 1) (GE Healthcare). Slice thickness was 1.49 ± 0.1 mm. Mean tube current was 327.9 ± 133.4 mAs and mean peak kilovoltage was 109.1 ± 9.9 kVp. Contrast agent was administered with injection rates ranging from 1.5 to 3.5 mL/s, using Ultravist or Iopamiro (both 370 mg iodine per mL).
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