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是不是到了放弃电影胶片的时候了?

Isn't it time to abandon cine film?

作者信息

Holmes D R, Wondrow M A, Gray J E

机构信息

Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minnesota.

出版信息

Cathet Cardiovasc Diagn. 1990 May;20(1):1-4. doi: 10.1002/ccd.1810200102.

Abstract

Cine has served our needs well since the early 1950s. For the first time, it allowed recording of motion studies of the cardiac structures on film. The cine technique has been standardized over the years, both the camera and the display. Cine filming techniques, however, have not advanced, except for new film products with faster emulsions and better-quality films. Video electronic imaging has made rapid advancements. These were prompted by the broadcast industry when the requirements for color were developed in the 1960s and by the advent of new recording techniques that provided a very stable video time base from analog tape recorders. The medical field has been able to capitalize on these developments and to produce some of our own that have not been applied in the broadcast world. These include pulsed progressive 525-line video acquisition of cardiac images in the cardiac catheterization laboratory. We also have been able to capitalize on the improved detector technology that the broadcast world has developed, such as the plumbicon pickup tubes, which produce images with very little lag and so provide images with improved resolution. These developments also have enabled us to reduce radiation to both the patient and the laboratory personnel, especially with implementation of the pulsed progressive acquisition, with which the dose has been reduced 50%. With the advent of interventional procedures in the cardiac catheterization laboratory, the need to assess images immediately cannot be fulfilled by cine filming because of the requirement for the processing of the film with its inherent delays. Quantification of cardiac structures is required to assess the outcome of interventional techniques.(ABSTRACT TRUNCATED AT 250 WORDS)

摘要

自20世纪50年代初以来,电影摄影技术很好地满足了我们的需求。它首次实现了在胶片上记录心脏结构的动态研究。多年来,电影摄影技术在相机和显示方面都已标准化。然而,电影拍摄技术除了出现了具有更快乳剂和更高质量的新胶片产品外,并没有取得进展。视频电子成像技术取得了迅速进步。这是由广播行业推动的,20世纪60年代对色彩的要求出现,以及新记录技术的出现,这些技术从模拟磁带录音机提供了非常稳定的视频时基。医学领域能够利用这些发展成果,并开发出一些在广播领域未应用的技术。这些包括在心脏导管实验室中对心脏图像进行脉冲渐进式525线视频采集。我们还能够利用广播行业开发的改进的探测器技术,如氧化铅摄像管,它产生的图像滞后非常小,因此提供了分辨率更高的图像。这些发展也使我们能够减少对患者和实验室人员的辐射,特别是通过实施脉冲渐进式采集,剂量减少了50%。随着心脏导管实验室介入手术的出现,由于胶片处理存在固有延迟,电影拍摄无法满足立即评估图像的需求。评估介入技术的结果需要对心脏结构进行量化。(摘要截断于250字)

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