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首页> 外文期刊>Journal of Digital Imaging >Is It Possible to Predict Heart Rate and Range during Enhanced Cardiac CT Scan from Previous Non-enhanced Cardiac CT?
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Is It Possible to Predict Heart Rate and Range during Enhanced Cardiac CT Scan from Previous Non-enhanced Cardiac CT?

机译：是否可以从以前的非增强型心脏CT预测增强型CT扫描期间的心率和范围？

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摘要

The effect of heart rate and variation during cardiac computed tomography (CT) on the examination quality. The purpose of this study is to investigate whether it is possible to predict heart rate and range during enhanced cardiac computed CT scan from previous non-enhanced cardiac CT scan. Electrocardiograph (ECG) files from 112 patients on three types of cardiac 64-slice CT (non-enhanced, prospective ECG-triggered and retrospective ECG-gated enhanced scans) were recorded. The mean heart rate, range (defined as difference between maximal and minimal heart rates) and the range ratio (defined as maximal heart rate divided by minimal heart rate) during the scans were compared. Scan time was 4.8, 4.6, and 7.3 s on non-enhanced, prospective ECG-triggered and retrospective ECG-gated scans, respectively (p < 0.0001). The heart rates were not significantly different (60 ± 9 beats per minute (bpm), 60 ± 9 and 61 ± 10 bpm; p = 0.64). Heart rate on the enhanced scan markedly correlated with that of the non-enhanced scan (r = 0.78 and 0.74). In contrast, the ranges of heart rate were 2 ± 5, 4 ± 8, and 8 ± 21 bpm, with different range ratios (1.04, 1.07, and 1.14; p < 0.0001). Correlation of heart rate ranges between non-enhanced scan versus prospective ECG-triggered scan was low (r = 0.27) and that between non-enhanced scan versus retrospective ECG-gated scan negligible (r = −0.027).Heart rate on enhanced cardiac CT, in most cases, can be predicted from a non-enhanced scan. Heart rate range on enhanced cardiac CT, however, is hard to predict from the non-enhanced scan.
机译：心脏计算机断层扫描（CT）期间心率和变化对检查质量的影响。这项研究的目的是调查是否有可能从先前的非增强型心脏CT扫描中预测增强型心脏CT扫描期间的心率和范围。记录了来自112例患者的心电图（ECG）文件，这些文件在三种类型的心脏64层CT（未增强，前瞻性ECG触发和回顾性ECG门控增强扫描）上进行了记录。比较了扫描期间的平均心率，范围（定义为最大和最小心率之差）和范围比率（定义为最大心率除以最小心率）。在非增强型，前瞻性ECG触发和回顾性ECG门控扫描中，扫描时间分别为4.8、4.6和7.3 s（p <0.0001）。心率无显着差异（每分钟60±9次心跳（bpm），60±9和61±10 bpm； p = 0.64）。增强扫描的心率与非增强扫描的心率显着相关（r = 0.78和0.74）。相反，心率的范围为2±5、4±8和8±21 bpm，具有不同的范围比率（1.04、1.07和1.14； p <0.0001）。非增强扫描与前瞻性ECG触发扫描之间的心率范围相关性较低（r = 0.27），而非增强扫描与回顾性ECG门控扫描之间的心率范围相关性较低（r = -0.027）。在大多数情况下，可以通过非增强扫描来预测。然而，很难从非增强型扫描中预测出增强的心脏CT上的心率范围。

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