Xie Wanying's words aimed to clarify a point: even with dual-source CT and the 64-slice spiral CT developed in the coming years, which add numerous detectors (equivalent to multiple cameras), they cannot make the CT imaging speed exceed the physical limit.
This is because the CT machine rotates 180 degrees to collect data and reconstruct images, with the shutter speed determined by the rotational speed. Angiography machines, like X-ray machines, are fixed and collect data by pressing the shutter to form images, giving them a significant advantage in shutter speed.
Angiography machines have their advantages, but CT machines have their advantages too. For car accident patients, excluding heart problems is primarily done with CT rather than angiography.
The reason is simple: heart injuries caused by car accidents are generally not coronary artery issues; there is a possibility of heart rupture.
