Contrast Booster improves the image quality and diagnostic value of pulmonary CTs

In February, ulrich medical launched its Red Dot Design Award-winning Contrast Booster breathing control device. The device is designed to help patients perform the Müller manoeuvre, a breathing technique for pulmonary CT scans.

According to the company, an independent study shows that during pulmonary embolism CTs (PECT) the technique increases the contrast media density in the target vessels and reduces incorrect contrasting, elevating the diagnostic value of the imaging. In addition, the constant, reproducible breathing position ensures consistent and comparable CT imaging quality for follow-up scans.

The Müller manoeuvre, also referred to as suction against resistance, is used as a breathing technique in radiological diagnostics to better visualise pathological changes in the airway and lung tissue, for example in cases of suspected PE. However, incorrect contrasting can often occur during PECTs due to transient interruption of contrast. The flow of uncontrasted blood from the lower half of the body means that the CT scan cannot be used to rule out PE.

“A factor that can positively influence imaging but has so far been underestimated in this context is the Müller manoeuvre. This is where the Contrast Booster comes in: we support the patient and make it easier for them to do the suction manoeuvre in a consistent and reproducible manner,” explained head of technology and regulation Sven Erdmann.

The Contrast Booster comprises a charging cradle and a patient unit with a disposable mouthpiece, which is light enough that the patient can easily hold it in their mouth without using their hands. The device does not require training or any subsequent servicing.

Mirrored LED displays on the charging cradle and patient unit show the patient and the radiographer, at the same time, whether the suction is intense enough or needs to be adjusted. After being used, the patient unit is disinfected and the disposable mouthpiece is replaced.

Lead picture: pulmonary CT without Contrast Booster (end-inspiratory breath-hold command) on the left, compared with Contrast Booster (Müller manoeuvre).

Read this report on page 16 of the April 2025 issue of RAD Magazine.