Advances in imaging study of low-dose computed tomography pulmonary angiography
MA Jingjing
YUAN Tao
QUAN Guanmin
Abstract：Computed tomography pulmonary angiography (CTPA) has become a major imaging tool in evaluating pulmonary artery embolism. CTPA for screening and re-examination makes radiation dose higher. Hence, low-dose CTPA gets more and more attention. Low-dose CTPA can be achieved with varied ways. Decreasing tube current and tube voltage are the most simple and effective method among them. Larger pitch can decrease radiation by reducing the scan time. Narrower z-axis coverage can decrease the radiation to marginal organs. With prospectively ECG-triggered technique, radiation is applied only at predefined time and iterative reconstruction algorithm (IR) can remove noise selectivitily and consequently can decrease radiation. It is important that clinicians have the awareness of low-radiation.
Keywords：Pulmonary embolismPulmonary arteryTomographyX-ray computedRadiation dose
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 557-561 )