Multislice first‐pass myocardial perfusion imaging on a conventional clinical scanner
Multislice first‐pass myocardial perfusion imaging on a conventional clinical scanner
复制标题
在传统临床扫描仪上进行多层首过心肌灌注成像
DOI：
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发表时间：
1995
影响因子：
3.3
通讯作者：
G. Pohost
中科院分区：
文献类型：
--
作者：
E. Walsh;M. Doyle;M. Lawson;G. Blackwell;G. Pohost
A technique is demonstrated for the acquisition and processing of multislice, first‐pass contrast‐enhanced pelfusion images in the myocardium. The acquisition is a modification of “keyhole” imaging in which time series images are acquired by sampling a limited segment of k‐space, corresponding to the low spatial frequencies. In the modification demonstrated here, keyhole samples are divided into two groups that are sampled on alternate cardiac cycles. The alternate “missing” k‐space portions are synthesized by Fourier interpolation. Visualization of contrast agent accumulation by image subtraction is demonstrated. A motion artifact reduction process using time domain Fourier filtering is used to reduce artifacts from respiration. Studies were performed on 46 patients at 1.5 T using gadoteridol (0.05–0.1 mmol/kg) injected into the right antecubital vein in conjunction with radionuclide imaging. Fully concordant studies were noted in 27 of these patients. Remaining studies were either partially or completely discordant for reasons relating to the differing natures of radionuclide versus MR contrast agent characteristics.
使用钆增强快照 MR 成像评估人体心肌灌注异常。
影响因子：
19.7
作者：
Schaefer,S;vanTyen,R;Saloner,D
通讯作者：
Saloner,D