Rotational X‐ray coronary angiography

Abstract

We designed and implemented a digital flat-panel-based rotational X-ray coronary angiography technique hypothesizing that luminal disease could be identified with less radiation exposure and contrast usage compared to conventional angiography. Individuals scheduled for diagnostic coronary angiography were prospectively enrolled. In addition to conventional acquisitions in standard planes, subjects underwent one additional left coronary artery (LCA) or right coronary artery (RCA) rotational (spin) acquisition using a predefined trajectory. Radiation exposure and contrast volume were recorded for each run. Seventy-five subjects were enrolled. When compared with standard five-view cine acquisition, LCA spin angiography with one cranial and one caudal run resulted in 34.38% ± 13.65% less radiation, 18.98% ± 4.97% less contrast, and comparable assessment of stenosis severity. One spin acquisition compared with three standard cine acquisitions for RCA angiography resulted in 59.31% ± 29.07% lower radiation, no significant change in contrast, and comparable assessment of stenosis severity. Rotational X-ray coronary angiography provides comparable visualization of coronary anatomy compared with traditional nonrotational coronary angiography with significantly less radiation exposure and contrast volume. Catheter Cardiovasc Interv 2004;63:201–207.