Pulmonary hypertension detection using dynamic and static measurable parameters on CT angiography

Area of Science:

• Radiology
• Cardiology
• Pulmonary Medicine

Background:

• Pulmonary hypertension (PH) is a serious condition.
• Early detection of PH is crucial for effective management.
• Computed tomography pulmonary angiography (CTPA) is a common imaging technique.

Purpose of the Study:

• To evaluate if dynamic and static CTPA parameters can identify pulmonary hypertension (PH).
• To explore the utility of routine CTPA in PH detection.

Main Methods:

• Fifty patients underwent CTPA and echocardiography.
• CTPA parameters measured included pulmonary artery (PA) density, PA to thoracic aorta (TA) density ratio, time to scan trigger, and PA diameter.
• Patients were categorized into PH (n=26) and non-PH (n=24) groups based on echocardiogram results.

Main Results:

• All CTPA parameters assessed demonstrated a significant correlation with PH identified by echocardiography.
• A contrast density ratio between the PA and TA ≥ 1.5 and/or a time to scan trigger ≥ 8 seconds were the most effective indicators for PH detection.
• These findings highlight specific quantitative metrics from CTPA that are associated with the presence of PH.

Conclusions:

• CTPA parameters correlate strongly with echocardiographically confirmed PH.
• Routine CTPA imaging holds potential as a non-invasive tool for detecting pulmonary hypertension.
• Further validation may establish CTPA as a primary screening method for PH.