Nanomaterial-based CT contrast agents and their applications in image-guided therapy

Area of Science:

• Biomedical imaging
• Nanotechnology
• Radiology

Background:

• Computed tomography (CT) is a widely used diagnostic tool.
• CT struggles to differentiate soft tissues due to similar mass attenuation coefficients.
• Nanomaterial-based contrast agents are being developed to improve CT imaging.

Purpose of the Study:

• To review the progress of nanomaterial-based CT contrast agents.
• To discuss their applications in image-guided therapy.
• To provide perspectives on future biomedical applications.

Main Methods:

• Classification of CT contrast agents by component: gold (Au), bismuth (Bi), lanthanide (Ln), and transition metal (TM) nanomaterials.
• Review of various image-guided therapies including photothermal therapy (PTT), photodynamic therapy (PDT), chemotherapy, radiotherapy (RT), and others.
• Discussion of nanomaterial-based agents in conjunction with therapeutic modalities.

Main Results:

• Gold, bismuth, lanthanide, and transition metal nanomaterials show promise as CT contrast agents.
• These agents facilitate diverse image-guided therapies such as PTT, PDT, chemotherapy, and RT.
• Nanomaterials offer enhanced sensitivity and contrast for CT imaging.

Conclusions:

• Nanomaterial-based CT contrast agents represent a significant advancement in medical imaging.
• Their integration with various therapeutic strategies opens new avenues for image-guided disease treatment.
• Further research into these agents and their applications is crucial for clinical translation.