A 3rd generation dual source CT system (SOMATOM Definition Force, Siemens) in dual energy mode was used for CTA image acquisition according to clinical protocols, including a topogram and a non-contrast CT scan (NCCT) followed by a CT angiogram. Images covered the region from the distal abdominal aorta down to the distal lower extremities. Patients received a total of 80 ml of intravenously administered iodinated contrast material (350 mgI/ml iohexol, GE Healthcare) by a multiphasic injection using an automated dual syringe power injector (Stellant D CT Injection System, Medrad) in accordance with current guidelines [16 (link)]. The CTA acquisition was timed based on a 120 kV bolus tracking approach (Care-Bolus, Siemens) and was performed applying the following parameters: FOV 350 mm; pitch 0.7; collimation, 2 × 64 × 0.6 mm for both detectors; and tube voltage and current, 150 kV/59 reference mAs for tube A and 90 kV/95 reference mAs for tube B. A soft tissue convolution kernel (Qr49, Siemens) with a section thickness of 1.5 mm and increment of 1.0 mm, and third generation advanced modeled iterative reconstruction algorithm (ADMIRE, Siemens) at a strength level of 3 (available strength level range 1 to 5) were used to reconstruct the data.
Stellant d ct injection system
Manufactured by Bayer
Sourced in Italy
The Stellant D CT Injection System is a laboratory equipment designed for use in computed tomography (CT) imaging. It is a device that is used to inject contrast media or other fluids into a patient during a CT scan procedure. The Stellant D system is capable of accurately controlling the flow rate and volume of the injected fluid to ensure consistent and reliable results during the imaging process.
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2 protocols using stellant d ct injection system
1
Lower Extremity CTA Protocol
2
Standardized Thoracic CT Imaging Protocol
Check if the same lab product or an alternative is used in the 5 most similar protocols
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All datasets were acquired on a 16-slice single-source CT scanner system (Siemens SOMATOM Emotion; Siemens Healthineers, Forchheim, Germany). Thoracic scans were acquired in cranio-caudal scan direction. Contrast enhancement was achieved by injecting a total of 80 mL of iodinated contrast material (Imeron 400, Bracco, Milan, Italy) followed by a saline chaser of 30 mL both at 3.5 mL/s applied via a 20-gauge intravenous ante-cubital catheter using a dual-syringe power injector (Stellant D CT Injection System, MEDRAD, INC., Warrendale, PA). Scan initiation was determined by bolus tracking and threshold-based auto-triggering using a dedicated software application (CARE bolus Siemens Healthcare Sector, Forchheim, Germany) with the region of interest (ROI) placed in the pulmonary trunk and a threshold for auto-triggering of 100 HU. Detailed scan and contrast material administration parameters are listed in Table 1 . Scanning was performed during inspiratory breath-hold. All patients received a breathing command via an automated voice instructing them explicitly to inspire gently and then to hold their breath.
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