使用间接转换动态平板探测器评估帧频对心脏病学图像质量的影响。

IF 1.7 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Radiological Physics and Technology Pub Date : 2024-09-18 DOI:10.1007/s12194-024-00845-3

Akira Hasegawa, Yohan Kondo

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引用次数: 0

摘要

为了验证帧频对心脏病学图像质量的影响，我们使用了间接转换动态平板探测器（FPD）。我们对输入输出特性进行了量化，并确定了心脏科所用设备在 7.5、10、15 和 30 帧/秒 (fps) 下的调制传递函数 (MTF) 和归一化噪声功率谱 (NNPS)。我们还计算了所有帧频下静止图像和视频的噪声功率谱，并获得了图像滞后校正因子 r。随着帧频的增加，NNPS 随频率的变化呈均匀下降趋势。系数 r 随帧率的变化而减小，其最小值为 30 帧/秒。我们的结果表明，在心脏病学中使用间接转换动态 FPD 进行高帧率成像会受到图像滞后的影响。

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Effect of frame rate on image quality in cardiology evaluated using an indirect conversion dynamic flat-panel detector.

To verify the effect of the frame rate on image quality in cardiology, we used an indirect conversion dynamic flat-panel detector (FPD). We quantified the input-output characteristics, and determined the modulation transfer function (MTF) and normalized noise power spectrum (NNPS) of the equipment used in cardiology at 7.5, 10, 15, and 30 frames per second (fps). We also calculated the noise power spectrum for still images and videos at all frame rates and obtained the image lag correction factor r. The input-output characteristics and the MTF agreed even when the frame rate was varied. The NNPS tended to decrease uniformly as a function of frequency at increasing frame rates. The factor r decreased as a function of the frame rate, and its minimum value was 30 fps. Our results suggest that high-frame-rate imaging in cardiology using indirect conversion dynamic FPDs is affected by image lag.

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来源期刊

Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

3.00

自引率

12.50%

发文量

期刊介绍： The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.