Tag Archives: mri perfusion

Perfusion Imaging
4
Feb

Overview

Perfusion imaging evaluates blood flow volume and transit time in tissues. Modalities include CT MRI and nuclear methods. Perfusion provides functional information for stroke tumor and cardiac assessment.

Brain Perfusion

CT and MR perfusion identify ischemic penumbra in acute stroke. Perfusion maps guide reperfusion therapy and prognosis. Standardized thresholds aid clinical decision making.

Tumor Perfusion

Perfusion imaging assesses tumor vascularity and response to therapy. Changes in perfusion metrics can indicate treatment effect. It complements anatomic and metabolic imaging in oncology.

Cardiac Perfusion

Myocardial perfusion imaging evaluates ischemia and viability. PET SPECT and MRI provide perfusion assessment depending on clinical needs. Quantitative perfusion supports risk stratification and management.

Perfusion Imaging CT MR PET
4
Feb

Overview

Perfusion imaging measures blood flow blood volume and mean transit time using CT MRI or PET to assess ischemia and tumor perfusion.

Technique

Dynamic contrast bolus tracking and deconvolution algorithms produce quantitative perfusion maps. Acquisition timing is critical.

Clinical Uses

Acute stroke core and penumbra assessment tumor perfusion for grading and therapy response and myocardial perfusion.

Limitations and Safety

Contrast use and radiation for CT. Standardization across platforms is challenging.