Reversal of flow in the pulmonary artery: high-pitch spiral as a new method for dose reduction in functional imaging.
Advancements in CT technology lave led to substantial dose reductions for anatomic imaging of the heart. Here we illustrate an example where rapid repeat imaging with a high pitch spiral technique can image physiologic function. By optimal timing, and repeat sub second scanning, we illustrate an unusual case where direction of blood flow in the right pulmonary artery is reversed.
Department of Radiology, Naval Medical Center San Diego, CA, USA. gilbert.boswell@med.navy.mil
Gilbert E
GE
Boswell
Michael
M
Cathey
Richard
R
Campin
Keshav
K
Nayak
D006801:Humans; D011651:Pulmonary Artery; D018633:Pulmonary Atresia / Q000000981:diagnostic imaging*; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods*; D036542:Tomography, Spiral Computed / Q000379:methods*; D055815:Young Adult