The CCTA data was collected for all patients using 64 rows, and CCTA images were collected by scanning machines from four different CT manufacturers (Siemens, Somatom Flash, Definition Flash, Somatom Definition FlashAS+, Force; GE Discovery CT 750 HD, Light Speed VCT; Toshiba, Aquilion One Vision; Philips BrillianceiCT 256). The patients took nitroglycerin sublingually to dilate the coronary arteries five minutes before the CCTA examination. For patients with a fast heart rate, they can consider taking oral p-blockers (25–75 mg) before the examination according to the doctor's recommendation. The CT scan range was determined according to location phase, which was from tracheal protrusion to lower edge of the heart. All patients received adaptive sequence acquisition triggered by prospective electrocardiogram.
Definition flash
Manufactured by GE Healthcare
Definition Flash is a laboratory equipment product from GE Healthcare. It is designed to provide a consistent and controlled environment for sample preparation and analysis. The core function of Definition Flash is to facilitate precise temperature control and fast heating or cooling of samples, enabling efficient and reproducible experimental procedures.
Automatically generated - may contain errors
Lab products found in correlation
Discovery ct 750 hd, by Toshiba (1 mentions)
Brilliance ict 256, by Philips (1 mentions)
Omnipaque 300, by GE Healthcare (1 mentions)
Somatom force, by Siemens (1 mentions)
Sensation 64, by GE Healthcare (1 mentions)
Somatom sensation 16, by GE Healthcare (1 mentions)
Definition as, by GE Healthcare (1 mentions)
Discovery 690, by GE Healthcare (1 mentions)
3 protocols using definition flash
1
Coronary CT Angiography with Detailed Imaging
2
Chest, Abdomen, and Pelvis CT Imaging
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The baseline and follow-up CT images of the chest, abdomen, and pelvis were performed using 128-slice Siemens SOMATOM Force, 256-slice Siemens Definition Flash, 256-slice GE Revolution Apex, or 320-slice UNITED IMAGING UCT960 with the following parameters: tube voltage, 120 keV; tube current, 210 mAs; collimation, 1 mm; and slice thickness, 2 mm. AP images were obtained 30s after an intravenous bolus injection of the contrast agent (Omnipaque 300, GE Healthcare, Shanghai, China) at a concentration of 350 mg/mL and a rate of 1.5 mL/s using a high-pressure pump syringe. The CT images were resampled with a 5 mm slice thickness.
3
Standardized Hip Imaging Protocol
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Imaging of the hips was acquired helically in the supine position on five different clinical whole-body multi-detector CT machines (Siemens SOMATOM Sensation 16, Sensation 64, Definition Flash, Definition AS+, and a GE Medical Systems Discovery 690). The acquisition protocol involved imaging inclusively from the superior margin of the acetabuli to the lesser trochanters. All acquisitions were processed with a standard smooth-edge body kernel and reconstructed with axial slice separation ranging from 0.75 to 1.5 mm, equivalent to slice thickness in all cases. In-plane pixel spacing varied from 0.59 to 0.78 mm, with field of view consistently 512 by 512 pixels. Peak kV was routinely 120 kV. When available from the fully anonymised metadata, recorded exposure ranged from 67-274 mAs, varying due to routine use of dose limiting.
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