Coronary artery calcification (CAC) was detected by a LightSpeed VCT XTe-64 slice MDCT scanner (GE Healthcare, Tokyo, Japan) with the same standard scanning protocol using 2.5-mm thickness, 400 ms rotation time, 120 kV tube voltage, and 124 mAs (310 mA * 0.4 s) tube current under ECG-gated dose modulation. Coronary artery calcification was defined as more than three contiguous pixels above a CT density of 130 Hounsfield Units. The total CAC score was calculated by Agatston's method [23 (link)]. Subjects were classified into two subgroups according to CAC score: CAC group (CAC score >0) or non-CAC group (CAC score ≤ 0) by referring to previous studies.
Lightspeed vct xte 64
Manufactured by GE Healthcare
Sourced in Japan
The LightSpeed VCT XTe-64 is a 64-slice computed tomography (CT) scanner manufactured by GE Healthcare. The core function of this product is to capture high-resolution, three-dimensional images of the body's internal structures, which can be used for medical diagnostic purposes.
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Lab products found in correlation
4 protocols using lightspeed vct xte 64
1
Coronary Artery Calcification Imaging Protocol
2
Cardiac MDCT Imaging Protocol
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Cardiac MDCT was performed using a LightSpeed VCT XTe-64 slice MDCT scanner (GE Healthcare, Tokyo, Japan) with the following standard scanning protocol: 2.5 mm thickness, 400 ms rotation time, 120 kV voltage, and 124 mAS (310 mA * 0.4 s) tube under ECG-gated dose modulation [25 (link)]. Calcification scores were determined using the Agatston method [26 (link)]. The CAC score was categorized as 0, 1–100, and >100, in which cholesterol-lowering intervention is recommended to prevent future cardiovascular events [16 (link),17 (link)].
3
Multidetector CT Scanning for Coronary Artery Calcium
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CAC was detected using a LightSpeed VCT XTe-64 slice multidetector computed tomography scanner (GE Healthcare, Tokyo, Japan) with the same standard scanning protocol 22 of 400-ms rotation time, 2.5-mm thickness, 120-kV voltage, and 124-mAS (310 mA x 0.4 s) tube current under electrocardiogram-gated dose modulation in both the Seoul and Suwon centres. The calcium score was analysed using semi-automatic methodology with GE Smartscore software (GE Healthcare), and confirmed by experienced technicians and radiologists. CACS were calculated using the method proposed by Agatston et al. 26 The interobserver and intra-observer reliabilities for CACS were excellent (intraclass correlation coefficient = 0.99), as previously reported. 22
4
Coronary Artery Calcium Scoring Protocol
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CAC was measured with a Lightspeed VCT XTe-64 slice MDCT scanner (GE Healthcare, Tokyo, Japan) in both study centers using the same standard scanning protocol 12 with 2.5 mm slice thickness, 400 ms rotation time, 120 kV tube voltage, and 124 mAS (310 mA × 0.4 seconds) tube current under ECG-gated dose modulation. CAC scores were calculated as proposed by Agatston et al. 17 The interobserver and intraobserver reliability for CAC scores were high (intraclass correlation coefficient of 0.99). 18 (link)
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