Modern Quantitative Techniques for PET/CT/MR Hybrid Imaging
نویسندگان
چکیده
The relentless progress that is being made in tomographic imaging modalities is inexorably expanding the application of positron emission tomography (PET) in the clinical field. Some of the most noteworthy advances involve innovations in quantitative techniques for hybrid imaging modalities such as PET/Computed Tomography (CT) and PET/Magnetic Resonance Imaging (MRI), which have greatly improved the ability to segment and analyze functional images produced with radiotracers such as (18F) Fluorodeoxyglucose (FDG). With continued technological progress, quantitative approaches can supplant the more subjective qualitative and semi-quantitative techniques that currently dominate the clinical use of PET.
منابع مشابه
Recent Advances in PET-MR Hybrid contrast agent
Introduction: All of the Imaging modalities have advantages and disadvantages alone. So if we want to have the best and perfect image, combining these modalities produces something we desired. PET-MR images consist of morphologic and metabolic data. MRI and PET provide high spatial and contrast resolution and high sensitivity and molecular information respectively. Hybrid PET-...
متن کاملRecent advances in hybrid molecular imaging systems.
Nuclear medicine imaging methods that use radionuclides, such as positron emission tomography (PET) and single-photon emission computed tomography (SPECT), offer highly sensitive and quantitative tools for the detection and localization of the biochemical and functional abnormalities associated with various diseases. The introduction of dual-modality PET/CT and SPECT/CT systems to the clinical ...
متن کاملComparison of state-of-the-art atlas-based bone segmentation approaches from brain MR images for MR-only radiation planning and PET/MR attenuation correction
Introduction: Magnetic Resonance (MR) imaging has emerged as a valuable tool in radiation treatment (RT) planning as well as Positron Emission Tomography (PET) imaging owing to its superior soft-tissue contrast. Due to the fact that there is no direct transformation from voxel intensity in MR images into electron density, itchr('39')s crucial to generate a pseudo-CT (Computed Tomography) image ...
متن کاملComputed tomography based attenuation correction in PET/CT: Principles, instrumentation, protocols, artifacts and future trends
The advent of dual-modality PET/CT imaging has revolutionized the practice of clinical oncology, cardiology and neurology by improving lesions localization and the possibility of accurate quantitative analysis. In addition, the use of CT images for CT-based attenuation correction (CTAC) allows to decrease the overall scanning time and to create a noise-free attenuat...
متن کاملNew and Emerging Techniques: PET/MR
Following PET/CT and SPECT/CT, PET/MR hybrid imaging is the most recent addition to the palette of hybrid cardiac imaging modalities. PET/MR synergistically combines the excellent soft tissue contrast and detailed image resolution of MR with metabolic information provided by PET. Integrated PET/MR systems furthermore offer the ability to acquire hybrid imaging data simultaneously (1). Beyond ex...
متن کامل