Photon-counting CT for diagnosis of acute pulmonary embolism: potential for contrast medium and radiation dose reduction.

ABSTRACT:

Objective

To evaluate the image quality of an ultra-low contrast medium and radiation dose CT pulmonary angiography (CTPA) protocol for the diagnosis of acute pulmonary embolism using a clinical photon-counting detector (PCD) CT system and compare its performance to a dual-energy-(DE)-CTPA protocol on a conventional energy-integrating detector (EID) CT system.

Methods

Sixty-four patients either underwent CTPA with the novel scan protocol on the PCD-CT scanner (32 patients, 25 mL, CTDI_vol 2.5 mGy·cm) or conventional DE-CTPA on a third-generation dual-source EID-CT (32 patients, 50 mL, CTDI_vol 5.1 mGy·cm). Pulmonary artery CT attenuation, signal-to-noise ratio, and contrast-to-noise-ratio were assessed as objective criteria of image quality, while subject

SUBMITTER: Pannenbecker P 

PROVIDER: S-EPMC10598187 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature