Incorporating HYPR de-noising within iterative PET reconstruction (HYPR-OSEM)
نویسندگان
چکیده
منابع مشابه
Dynamic PET denoising with HYPR processing.
HighlY constrained backPRojection (HYPR) is a promising image-processing strategy with widespread application in time-resolved MRI that is also well suited for PET applications requiring time series data. The HYPR technique involves the creation of a composite image from the entire time series. The individual time frames then provide the basis for weighting matrices of the composite. The signal...
متن کاملPartial volume correction of brain PET studies using iterative deconvolution in combination with HYPR denoising
BACKGROUND Accurate quantification of PET studies depends on the spatial resolution of the PET data. The commonly limited PET resolution results in partial volume effects (PVE). Iterative deconvolution methods (IDM) have been proposed as a means to correct for PVE. IDM improves spatial resolution of PET studies without the need for structural information (e.g. MR scans). On the other hand, deco...
متن کاملThe Mathematics of HYPR
Introduction A promising new method for accelerated imaging, HighlY constrained backPRojection (HYPR) [1] uses the spatial information of a time averaged image (composite) to improve images at individual time frames. The original HYPR algorithm [1] was derived heuristically based on the idea that the location of the object was known using the composite image and that the role of the data from e...
متن کاملCompressed Sensing and HYPR
The desire to achieve high spatial and/or temporal resolution in MRI coupled with limited scan time has led to the necessity to reconstruct images from incomplete datasets. A number of approaches to accelerate MR imaging have been proposed, including parallel imaging (1-3), UNFOLD (4), k-t BLAST/SENSE (5) and, more recently, compressed sensing (6-8) and HYPR (9,10). We will discuss several diff...
متن کاملCompressed Sensing and HYPR
Introduction MRI is a powerful medical imaging modality that allows for 2D and 3D imaging in arbitrary scan orientations. However, in some clinical applications its full potential is compromised by the lack of imaging speed, e.g. in dynamic imaging such as interventional MRI or bolus tracking in MR Angiography, or in lengthy acquisitions such as MR spectroscopy, diffusion tensor imaging, 4D pha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics in Medicine & Biology
سال: 2017
ISSN: 1361-6560
DOI: 10.1088/1361-6560/aa7b66