whole body PET attenuation correction
Effects of ferumoxytol on quantitative PET measurements in simultaneous PET/MR whole-body imaging: a pilot study in a baboon model
... Simultaneous PET/MR imaging depends on MR-derived attenuation maps (mu-maps) for accurate attenuation correction of PET ...F-FDG PET standardized uptake values (SUV) through ...
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An artefact of PET attenuation correction caused by iron overload of the liver in clinical PET-MRI
... Hybrid PET-MRI systems are now available for clinical imaging (Quick, ...to attenuation properties for gamma radiation, more complex algorithms have to be applied in order to get reasonable estimates of ...
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A deep learning approach for 18F-FDG PET attenuation correction
... a whole-body 18 F-FDG PET and a non-contrast CT scan on the Discovery PET/CT 710 scanner (GE Healthcare, Waukesha, WI, USA) at our institution in ...NAC PET and CT images due to subject ...
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NEMA image quality phantom measurements and attenuation correction in integrated PET/MR hybrid imaging
... NEMA PET image quality evaluations on a PET/MR system as closely to the NEMA NU 2 – 2007 standard as ...RF body coil, this was not performed for the presented ...
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Motion Correction of Whole-Body PET Data with a Joint PET-MRI Registration Functional
... For PET data creation an XCAT dataset with lesions added to the lungs and the liver was created (heart 50 kBq/ml, liver 20 kBq/ml, background 2 kBq/ml, lesions 50 kBq/ml, lesion diameter 5 ...tionally, ...
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Impact of attenuation correction on clinical [18F]FDG brain PET in combined PET/MRI
... brain PET study cannot simply be translated to other PET tracers or to other body regions without fur- ther ...neurological PET studies in general ...future PET/MRI systems and their ...
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Qualitative and Quantitative Performance of 18F FDG PET/MRI versus 18F FDG PET/CT in Patients with Head and Neck Cancer
... time-of-flight PET and a 3T MR imaging system (Ingenuity TF PET/MR; Philips ...Healthcare). PET/MR images were acquired in 9 –11 bed positions, with 120 –150 seconds per bed position to compensate ...
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Impact of PET acquisition durations on image quality and lesion detectability in whole-body 68Ga-PSMA PET-MRI
... scatter correction and also not fre- quently encountered in PET from PET-CT [9], inadequate scatter correction, which in turn relies on the determined attenuation map, is a likely ...
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An Investigation of the Required MR Bone Attenuation Correction for Quantitative Whole Body PET/MR Imaging Using Clinical NaF PET/CT Studies
... 690 PET/CT scanner using four different setups that introduced dif- ferent degrees of beam hardening (Figure ...overall attenuation increasing from setup 1 to setup ...
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MLAA-based attenuation correction of flexible hardware components in hybrid PET/MR imaging
... between attenuation and activity is a severe problem when applying MLAA for patient attenuation estimation [15], it is not relevant for xMLAA-based hardware estimation as presented in this ...patient ...
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MRI-Based Attenuation Correction in Emission Computed Tomography
... tribution. Attenuation [113], randoms [27], and scatter [223] are responsible for this ...disconnect. Attenuation reduces the number of trues coming from the patient by well over an order of magnitude, ...
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Interobserver variability of image-derived arterial blood SUV in whole-body FDG PET
... As demonstrated by our data, it is, however, relevant to ensure that the evaluated portions of the reconstructed images are free of spurious changes of the lesion to blood image contrast which might be caused by ...
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Impact of non-uniform attenuation correction in a dynamic [18F]-FDOPA brain PET/MRI study
... by PET/MRI is to extract an attenuation map (μ-map), for PET attenu- ation correction (AC), that accurately resembles the underlying electron density distribution of the subject under ...
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A novel dual energy CT-based attenuation correction method in PET/CT systems: A phantom study
... different energy mapping techniques including bilinear, DECT, and virtual DECT are shown in figure 6. Table 3 summarizes calculated LACs at 511 keV for the different regions of phant[r] ...
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Using 31P-MRI of hydroxyapatite for bone attenuation correction in PET-MRI: proof of concept in the rodent brain
... This work brings theoretical and experimental arguments justifying the implementation and assessment of 31 P-ZTE-based attenuation correction on human PET-MRI systems. The 31 P approach should prove ...
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The future of hybrid imaging—part 2: PET/CT
... combine PET with CT was made in the early 1990s by Townsend, Nutt and ...a PET/CT hardware combination was to use the CT images to derive the PET attenuation correction factors ...
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Clinical value of whole body PET/CT in patients with active rheumatic diseases
... using PET and readily identify the distribution of the ...using PET combined with the absence of a significant inflammatory ...only; PET is useful for early diagnosis of this condition, and early ...
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Improved UTE-based attenuation correction for cranial PET-MR using dynamic magnetic field monitoring.
... resulting attenuation maps were compared to a segmented map derived from a CT scan of the same phantom, using the Dice similarity ...Simulated PET data were generated for one volunteer to show the impact of ...
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Whole body correction of mucopolysaccharidosis IIIA by intracerebrospinal fluid gene therapy
... Correction of neuroinflammation in MPS IIIA mice follow- ing AAV9-Sgsh gene delivery. Secondary to the lysosomal pathology in neurons and glial cells, the brains of MPS IIIA mice are characterized by the presence ...
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Computed tomography based attenuation correction in PET/CT: Principles, instrumentation, protocols, artifacts and future trends
... Key Words: PET/CT, X-ray CT, Attenuation correction, CTAC, Hybrid imaging, Contrast medium, Artifact.. Iran J Nucl Med 2007; 15(2): 1-29.[r] ...
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