This study is looking into whether a special type of CT scan, called a non-contrast chest CT (NCCT), can help find acute pulmonary embolism (blood clots in the lungs) without needing an injected dye. If you join, you'll have two extra, very low-dose CT scans that take less than a minute, in addition to your regular CT scan. You'll also be trained to hold your breath using a spirometer (a device to measure lung function). The study is for adults aged 21 and older who are already getting a CT scan for suspected pulmonary embolism. The main goal is to see how well the non-contrast CT can rule out pulmonary embolism, with results being checked up to two years later. The current recruitment status is unclear.

Study design

This is an interventional study planning to enroll 750 participants. It is not specified if it is randomized or blinded.

What's involved

You will have two extra, low-dose CT scans and be trained to use a spirometer. Your total participation time is about 5 minutes, and your medical records will be reviewed for 30 to 90 days after your CT scan.

Compensation

Not stated in the trial record.

Follow-up

Your medical records will be reviewed for up to 30 to 90 days after your CT scan. The primary endpoint for ruling out PE on non-contrast CT is measured at 2 years.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.