Sedatives, facial trauma, or metabolic disturbances can cloud that picture. Many centers have turned to computed-tomography flow imaging, betting that a scan can settle what the stethoscope cannot. In ...

Perfusion imaging may be performed with high-speed MR and CT imaging systems, which are widely available. Perfusion imaging with MR has been validated in animal models and in clinical stroke studies.

Advanced CT imaging with CT perfusion (CTP) and CT angiography could be the future of acute stroke imaging, as it is faster, more accessible, and generates comparable imaging information to MRI.

The CT perfusion criterion was a hemispheric perfusion lesion on transit-time maps that was at least 20% greater than the infarct-core lesion, with a volume of at least 20 ml.

But, it has never been compared directly with perfusion CT in humans. Iodine maps created using DECT scanners are used to help in image interpretation of Computed Tomographic Pulmonary Angiography ...

Adding stress myocardial CT perfusion imaging to examinations with CT angiography may safely increase diagnostic specificity and reduce the need for invasive treatments in patients with possible ...

CT perfusion had a higher sensitivity than MR perfusion based on the secondary reference standard (p < 0.01), but a lower specificity than MR using the primary reference standard (p < 0.01). The ...

Three perfusion CT parameters of hepatic perfusion index (HPI), mean transit time (MTT) and permeability-surface area product (PS) were compared among controls, patients and subgroups.

Perfusion CT may be used as a noninvasive tool in diagnosing hepatic toxicity. ### Reference: Zhang Q, Yuan ZG, Wang DQ, Yan ZH, Tang J, Liu ZQ.