Multimodality imaging of structure and function.

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Radiology

Background:

• Medical imaging modalities for structure and function historically evolved independently.
• Software-based image coregistration techniques emerged to combine data from different imaging devices.
• The development of integrated hardware fusion devices offers an alternative to retrospective software fusion.

Purpose of the Study:

• To review the evolution of multimodality medical imaging instrumentation.
• To assess the current status and future potential of hardware fusion devices in clinical practice.
• To highlight the diagnostic advantages of combining imaging modalities.

Main Methods:

• Review of historical development of medical imaging devices.
• Analysis of software-based image fusion techniques.
• Examination of the technological advancements in hardware fusion instrumentation (e.g., PET/CT, SPECT/CT, PET/MR).

Main Results:

• Combined PET/CT and SPECT/CT devices are increasingly utilized in clinical diagnosis and staging.
• The first clinical MR scanner with an integrated PET insert represents a significant technical advancement.
• Hardware fusion offers advantages over retrospective software-based fusion.

Conclusions:

• Multimodality imaging instrumentation has progressed significantly from independent devices to integrated hardware fusion systems.
• Hardware fusion devices like PET/CT and SPECT/CT are crucial for modern disease diagnosis and staging.
• Future developments in integrated imaging technologies, such as PET/MR, hold substantial promise for clinical applications.