Cardiac computed tomography (CT) imaging was performed with a 64-slice CT scanner or 64-slice dual-source CT scanner (Siemens Medical Solutions), as previously described [11 (link), 13 (link)]. Parameters including number of subclinical coronary artery plaque segments and number of noncalcified coronary plaque segments were assessed using previously described analytic techniques [11 (link), 13 (link)].
64 slice ct scanner
Manufactured by Siemens
Sourced in Germany
The 64-slice CT scanner is a medical imaging device that uses X-ray technology to capture high-resolution, three-dimensional images of the body. It is capable of producing 64 individual slices or images during a single rotation around the patient, allowing for faster and more comprehensive scanning.
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Lab products found in correlation
64 slice dual source ct scanner, by Siemens (2 mentions)
Biograph mct pet ct, by Siemens (2 mentions)
18 g puncture needles, by Cook Medical (1 mentions)
Aquarius workstation, by TeraRecon (1 mentions)
64 slice ct scanner, by GE Healthcare (1 mentions)
256 slice ct scanner, by Philips (1 mentions)
16 slice ct scanner, by Philips (1 mentions)
16 slice ct scanner, by Toshiba (1 mentions)
Reconct, by Siemens (1 mentions)
Ge optima, by GE Healthcare (1 mentions)
Somatom definition flash, by Siemens (1 mentions)
20 protocols using 64 slice ct scanner
1
Cardiac CT Imaging Protocol for Coronary Plaque Analysis
2
Coronary Calcium Scoring and CCTA in CAD
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We prospectively recruited 309 consecutive patients (92 male and 217 female; mean age 59.9 years) who underwent a CCTA and concomitant coronary calcium scoring (64-slice CT scanner; Siemens Somatom Sensation, Germany) because of a definite or suspected coronary artery disease in our department (Silesian Center for Heart Diseases, Poland) between January and December 2012. Patients with history of a previous percutaneous coronary intervention and/or coronary artery bypass grafting, myocardial bridging or coronary vascular anomalies were excluded from the study. The following cardiac risk factors were recorded in the database: hypertension (history of hypertension or antihypertensive therapy), diabetes mellitus (fasting blood glucose level > 7 mmol/l or use of oral antidiabetic therapy or insulin), smoking (defined as current smoker or previous smoker within the last year) and a positive family history (presence of CAD in first-degree relatives < 55 years of age if male and < 65 years of age if female). Laboratory tests were performed for total cholesterol, fasting glucose, full blood count, C-reactive protein (CRP) and estimated glomerular filtration rate. The study has been approved by the local Ethics Committee.
3
Radial Head Fracture Fixation Angle Analysis
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The present study was approved by the ethics committee of our institution and written informed consent was obtained from the participants. To investigate the effects of different angles of absorbable screw fixation for radial head fractures, FE models of the radial head were created based on CT results. The common characteristics of the Mason type II radial head fractures according to X‐ray and CT images were more than 2 mm of displacement and involvement of at least 30% of the radial head (Fig. 1 ). For this study, the left elbow of a healthy Chinese man (age: 34 years; body weight: 73 kg; height: 170 cm) was CT scanned. He had no previous history of elbow joint injury, and X‐ray examination of the elbow joint had preliminarily excluded radial head trauma, arthritis, bone tumor, and other diseases. CT scans were undertaken in the ShenZhen PingLe Orthopedic Hospital (Guangdong, China) on 21 January 2020 using a 64‐slice CT scanner (Siemens Medical Systems). With the consent of the participants, a total of 380 slices (0.5‐mm thickness) of DICOM images were obtained.
4
I-125 Brachytherapy Seed Implantation Protocol
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The 125I sealed seed source was provided by Tianjin Saide Biological Pharmaceutical Co., Ltd, China. The Ag rod with 125I was mounted in the titanium tube and sealed at both ends. The length of the rod was 4.50 mm and the external diameter was 0.80 mm. The matched peripheral dose was 110 to 140 Gy, and the average energy was 27 to 32 KeV. With an initial activity of 0.8 mCi, a radius of 1.7 cm and a half-life of 59.6 days, when an 125I seed was implanted in the lesion, it released continuous low-dose γ-ray and soft X-ray, and 93% to 97% of brachytherapy dose was delivered in 8–10 months. The radioactive particle implantation treatment system was provided by Zhuhai Hokai Medical Instruments Co., Ltd, China. The 18G puncture needles were from Cook Medical, Bloomington, IN, USA. The 64-slice CT scanner was from Siemens, Germany.
5
Abdominal CT Imaging with Contrast
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The instrument was a Siemens 64-slice CT scanner, and the patient was placed in a supine position. During the examination, the patient was instructed to keep the upper arm in an upward position and to hold breath, and the scanning area was the upper abdomen. The tube voltage was 120 kV, the layer spacing was set at 5 mm, and the layer thickness was 5 mm. The upper abdomen was scanned first, and then, 100 mL of iohexol was injected through the elbow vein at a flow rate of 3 mL/s, and the scan was performed in the arterial phase (30s), portal phase (60–70s), and delayed phase (120–180s). The number of lesions, density, boundary, and dynamic enhancement scan characteristics and enhancement exit features were observed.
6
Cardiac CT Angiography Imaging Protocol
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Cardiac CT angiography imaging was performed using a 64-slice CT scanner (Siemens Medical Solutions). The CCTA protocol has been described previously [5 (link), 6 (link)].
7
Cardiac Imaging Assessment of Coronary Plaque Burden
8
CT-Based Optic Nerve Sheath Diameter Prediction
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All CT images were obtained with a 64-slice CT scanner (Siemens, Munich, Germany), with a single slice section of 0.6 mm. To analyze CT-based factors for the prediction of impending herniation, CT was taken 12–36 h after onset of cerebral infarction. The ONSD and ETD were measured using the middle third spine window (window width 60, window level 360), with identical contrast and brightness. The ONSD was measured 10 mm behind the globe, perpendicular to the linear axis of the optic nerve (Figure 1 ). The ETD was defined as the maximal transverse diameter of the eyeball from retina to retina (Figure 1 ). The values were averaged from measurements independently obtained by two neuroradiologists. All of the measurements were performed bilaterally, and the mean value was used to calculate the ONSD/ETD ratio.
9
Thin-slice CT and 3D Reconstruction
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Specimens underwent thin-slice CT and 3D reconstruction before and after the TFF approach with use of a 64-slice CT scanner (Siemens, Germany). The parameters measured manually above were measured on 3D CT images.
10
Tibia Measurements from CT Angiography
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All examinations were performed by a 64-slice CT scanner (Siemens Medical Solutions, Erlangen, Germany). A routine peripheral angiography multi-detector row computed tomography (MDCT) protocol was followed. The scanning parameters included 80 kV, 115 mAs, slice thickness 1mm and 512x512 matrix.
In preparation for the study readings, all multidetector CT angiography data were transf erred from the archive to a workstation (Aquarius Workstation; TeraRecon, San Mateo, CA) via internal network connections, providing 3D postprocessing options, multiplanar image reformatting (MPR), and maximum intensity projections.
CT scan data was used to create 3D reconstruction of the tibia and four measurements (ML, UB, LB and IntCondB) were taken on each bone (Fig 1 and2). In addition, measurements related to the nutrient foramen (NFap, NFtrv and NFCirc) were taken on axial CT images (Fig 3 and4). Each measurement was performed by researchers manually at the workstation. Description of each measurement can be found in table 2.
In preparation for the study readings, all multidetector CT angiography data were transf erred from the archive to a workstation (Aquarius Workstation; TeraRecon, San Mateo, CA) via internal network connections, providing 3D postprocessing options, multiplanar image reformatting (MPR), and maximum intensity projections.
CT scan data was used to create 3D reconstruction of the tibia and four measurements (ML, UB, LB and IntCondB) were taken on each bone (Fig 1 and2). In addition, measurements related to the nutrient foramen (NFap, NFtrv and NFCirc) were taken on axial CT images (Fig 3 and4). Each measurement was performed by researchers manually at the workstation. Description of each measurement can be found in table 2.
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