Perfusion computed tomography in renal cell carcinoma

Area of Science:

• Radiology and Imaging Science
• Oncology
• Medical Imaging Techniques

Background:

• Contrast-enhanced computed tomography (CT) is the standard for renal cell carcinoma (RCC) diagnosis, staging, and response assessment.
• Limitations exist in standard CT for early detection of treatment response and detailed tumor microenvironment analysis.

Purpose of the Study:

• To describe the techniques and role of perfusion CT (pCT) in the staging and response assessment of RCC.
• To highlight pCT's potential in evaluating tumor angiogenesis and microenvironment.
• To explore pCT's utility in predicting prognosis and guiding therapy selection for RCC patients.

Main Methods:

• Review of perfusion CT (pCT) techniques for imaging renal cell carcinoma (RCC).
• Analysis of pCT's ability to depict regional tumor perfusion and vascular permeability.
• Comparison of pCT-based response evaluation with standard size criteria (e.g., RECIST).

Main Results:

• Perfusion CT (pCT) provides insights into tumor angiogenesis and microenvironment by assessing perfusion and vascular permeability.
• pCT-based changes in perfusion may precede size-based changes in response to targeted therapies like kinase inhibitors.
• Functional imaging with pCT offers a potentially earlier and more accurate method for treatment response assessment in RCC.

Conclusions:

• Perfusion CT (pCT) represents a valuable advancement in renal cell carcinoma (RCC) imaging, offering functional insights beyond anatomical assessment.
• pCT may enable earlier detection of treatment efficacy, potentially improving patient prognosis and therapeutic strategies.
• The integration of pCT into RCC management protocols warrants further investigation for optimized patient care.