Waiting to exhale: salvaging the nondiagnostic CT pulmonary angiogram by using expiratory imaging to improve contrast dynamics

@article{Chen2007WaitingTE,
  title={Waiting to exhale: salvaging the nondiagnostic CT pulmonary angiogram by using expiratory imaging to improve contrast dynamics},
  author={Yung Hsin Chen and Vinodkumar Velayudhan and David I. Weltman and Dvorah Balsam and Nick R Patel and Kathryn A. Draves and Kathryn A. Robinson and T Hong Anh Vu},
  journal={Emergency Radiology},
  year={2007},
  volume={15},
  pages={161-169}
}
We attempted to investigate whether computed tomography pulmonary angiography (CTPA) in the expiratory phase can improve contrast enhancement of the pulmonary arteries and mitigate the effect of inspiratory transient attenuation artifact, potentially salvaging nondiagnostic studies. Eighteen patients with indeterminate inspiratory CTPA, despite proper contrast bolus were studied. Patients were rescanned in expiration using the same contrast bolus and scanning parameters. The attenuation of each… CONTINUE READING

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