All patients underwent a chest CT examination and regular reexamination, with an interval range from 3 to 10 days. CT examinations were performed using a single inspiratory phase in 2 commercial multidetector CT scanners (GE Revolution CT or Siemens SOMATOM Force CT). All patients were in the supine position placed in the middle of the examination bed and raised arms on the head. The imaging parameters were as follows: a tube voltage of 120 kV, a tube current of 50 to 200 mA with automatic tube current modulation techniques, rotation time of 0.5 to 1.0 s, the pitch of 1.0 to 1.5, and acquisition section thickness of 1 mm. Lung window was built by high-resolution algorithm. Conventional image reconstruction: the images of 5 mm thick were reconstructed to images with lung window (window width: 1200–1500 Hu, window position: −750 to −650 Hu) and mediastinal window (window width: 300–350 Hu, window position: 50–70 Hu). Thin section image reconstruction: the images of 5 mm thick were rebuilt to thin section images (high resolution) with lung window (lung window algorithm, window width 1000–1500 Hu, window position −750 to −600 Hu).
Revolution ct
Manufactured by Siemens
The Revolution CT is a computed tomography (CT) imaging system developed by Siemens. It is designed to capture high-quality, detailed images of the internal structures of the human body. The core function of the Revolution CT is to provide advanced imaging capabilities for medical professionals to assist in diagnosis and treatment planning.
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Lab products found in correlation
4 protocols using revolution ct
1
Chest CT Imaging Protocol for COVID-19
2
Chest CT Image Acquisition Protocol
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The assessed CT images were the most recent CT images before surgery. All CT images in the DICOM format, without preprocessing or normalization, were considered. Chest CT images were obtained with a 16-, 64-, 128- or 256-detector row CT scanner from the following manufacturers: GE (LightSpeed 16, LightSpeed VCT, Revolution CT and Revolution RVO), Siemens (Emotion 16, Sensation 64 and SOMATON Definition AS+), Philips (iCT 256 and Ingenuity CT) and Canon (Aquilion ONE) Medical Systems. The CT image parameters were as follows: detector collimation, 0.5–0.625 mm; pitch, 0.813–1.2; gantry speed, 0.35 or 0.5 s per rotation; 120 kVp; 41–330 mA; slice thickness, 1.0–1.25 mm; and matrix, 512 × 512.
3
CT Angiography of Abdominal and Limb Arteries
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CT angiography was performed in the Department of Medical Imaging at the University of Pécs Clinical Centre using the GE Medical Systems Revolution CT (SN REVVX2000052CN) and Siemens Somatom Perspective (SN 77934) devices, following intravenous administration of contrast agent. The multidimensional reconstruction of the abdominal, pelvic, and lower limb arteries was evaluated by experienced radiologists.
4
Quantifying Skeletal Muscle Mass and Quality
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Single‐slice transverse CT images at L1 and L3 were determined to quantify skeletal muscle mass and quality.
18 (link) CT scanners from General Electric (GE) (128‐slice spiral CT scanners from GE discovery CT, 128‐slice spiral CT scanners from GE optima CT660, and 256‐slice spiral CT scanners from GE revolution CT) and Siemens (64‐slice spiral CT scanners from SOMATOM sensation CT, SOMATOM definition flash CT, and SOMATOM definition AS CT, and 96‐slice spiral CT scanners from SOMATOM force CT) were used. Image analysis was conducted with ImageJ (version 1.46).
19 (link)
The value of HU represents the radiodensity. Tissues were measured by using a threshold for HU of −29 to +150 for skeletal muscle
20 (link) (FigureS1 ). The mean radiodensity of the whole muscle area at the L1 and L3 cross‐sectional areas was selected for analysis of SMD (indicator used to quantify skeletal muscle quality, HU). SMI (cm2/m2) was represented by the skeletal muscle area corrected by body height squared.
21 (link)
18 (link) CT scanners from General Electric (GE) (128‐slice spiral CT scanners from GE discovery CT, 128‐slice spiral CT scanners from GE optima CT660, and 256‐slice spiral CT scanners from GE revolution CT) and Siemens (64‐slice spiral CT scanners from SOMATOM sensation CT, SOMATOM definition flash CT, and SOMATOM definition AS CT, and 96‐slice spiral CT scanners from SOMATOM force CT) were used. Image analysis was conducted with ImageJ (version 1.46).
19 (link)
The value of HU represents the radiodensity. Tissues were measured by using a threshold for HU of −29 to +150 for skeletal muscle
20 (link) (Figure
21 (link)
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