Barbaric Z L, Gomes A S, Deckard M E, Nelson R S, Moler C L
AJR Am J Roentgenol. 1984 Jan;142(1):143-7. doi: 10.2214/ajr.142.1.143.
A new imaging system for digital subtraction angiography (DSA) was evaluated in 30 clinical studies. The image receptor is a 25 X 25 cm, 12 par gadolinium oxysulfate rare-earth screen whose light output is focused to a low-light-level Isocon camera. The video signal is digitized and processed by an image-array processor containing 31 512 X 512 memories 8 bits deep. In most patients, intraarterial DSA studies were done in conjunction with conventional arteriography. In these arterial studies, images adequate to make a specific diagnosis were obtained using half the radiation dose and half the amount of contrast material needed for conventional angiography. In eight intravenous studies performed either to identify renal artery stenosis or for evaluation of congenital heart anomalies, the images were diagnostic but objectionably noisy.
一种用于数字减影血管造影（DSA）的新型成像系统在30项临床研究中得到了评估。图像接收器是一个25×25厘米、12层硫酸钆氧稀土增感屏，其光输出聚焦于一台低光水平的分流直像管相机。视频信号由一个包含31个512×512、8位深度存储器的图像阵列处理器进行数字化和处理。在大多数患者中，动脉内DSA研究是与传统动脉造影术联合进行的。在这些动脉研究中，使用传统血管造影所需辐射剂量的一半和造影剂用量的一半，获得了足以做出明确诊断的图像。在为识别肾动脉狭窄或评估先天性心脏异常而进行的8项静脉研究中，图像具有诊断价值，但噪声过大。
