Modifying technique cuts radiation dose for CTA
Reduced or no “padding” during ECG-triggered coronary CT angiography results in a substantial reduction in radiation dose without affecting image quality and interpretability, according to a study in the April American Journal of Roentgenology.
Reduced or no “padding” during ECG-triggered coronary CT angiography results in a substantial reduction in radiation dose without affecting image quality and interpretability, according to a study in the April American Journal of Roentgenology.
The study included 886 patients who underwent ECG-triggered coronary CTA with a padding duration of 0, 1 to 99, or 100 to 150 msec. Padding refers to the extra time added before and after the minimum time CTA must be on during each heartbeat.
Increased padding was associated with a greater radiation dose: a 45% increase per 100-msec increase in padding. No difference in image interpretability between padded and unpadded images was seen at the three sites: Weill Cornell Medical College in New York; Fairfax Radiology Associates in Fairfax, VA; and the University of British Columbia in Vancouver, BC.
Study with CT Data Suggests Women with PE Have More Than Triple the One-Year Mortality Rate than Men
April 3rd 2025After a multivariable assessment including age and comorbidities, women with pulmonary embolism (PE) had a 48 percent higher risk of one-year mortality than men with PE, according to a new study involving over 33,000 patients.
