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[PDF] Top 20 Impact of MR-safe headphones on PET attenuation in combined PET/MRI scans

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Impact of MR-safe headphones on PET attenuation in combined PET/MRI scans

Impact of MR-safe headphones on PET attenuation in combined PET/MRI scans

... for PET attenuation correction with and without the headphones in place (5-min PET scan in one bed position, additional earplugs, approximately 90 min after injection of 4 MBq/kg, OSEM 3i21s ... See full document

5

Impact of attenuation correction on clinical [18F]FDG brain PET in combined PET/MRI

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 ...limited impact of the Dixon based MR-AC on clinical diagnosis in ... See full document

9

Alternative headphones for patient noise protection and communication in PET-MR studies of the brain

Alternative headphones for patient noise protection and communication in PET-MR studies of the brain

... in combined PET-MR devices, use of common pneumatic headphones, as delivered by the manufacturer, is problematic due to the potential generation of attenuation artefacts in the ... See full document

6

Using 31P-MRI of hydroxyapatite for bone attenuation correction in PET-MRI: proof of concept in the rodent brain

Using 31P-MRI of hydroxyapatite for bone attenuation correction in PET-MRI: proof of concept in the rodent brain

... contamination of the signal of bone voxels by non-apatite molecules on 31 P-ZTE images. Both theoretical and experimental data argue against such a contamination. Based on the molar mass of hydroxyapatite (402 g/mol for ... See full document

10

Quantification of amyloid PET scans in early detection of Alzheimer’s disease

Quantification of amyloid PET scans in early detection of Alzheimer’s disease

... Amyloid PET scans in the ADNI database are acquired as four 5-minute frames 50-70 minute ...positive scans show continuous signal increase from 0 to 30 minutes post- injection, with stable values of ... See full document

35

Respiratory motion correction of PET using MR-constrained PET-PET registration

Respiratory motion correction of PET using MR-constrained PET-PET registration

... simultaneous PET-MR scanners has opened up the possibility of using MR imaging to estimate subject motion during PET acquisi- tion without the limitations imposed by radiation ...[19] ... See full document

23

Improved UTE-based attenuation correction for cranial PET-MR using dynamic magnetic field monitoring.

Improved UTE-based attenuation correction for cranial PET-MR using dynamic magnetic field monitoring.

... trajectories are measured during a separate calibration scan, allowing both short and long term eddy current behavior to be measured. These effects can then be accounted for by us- ing the measured trajectories in ... See full document

13

Cardiac PET/MRI—an update

Cardiac PET/MRI—an update

... In PET/CT, implanted devices (such as stents, sternal wires, defibrillators, pacemakers, cardiac resynchronization therapy devices) cause artifacts in CT which are translated into the AC-map and ultimately into ... See full document

17

PET performance evaluation of a pre-clinical SiPM-Based MR-Compatible PET Scanner

PET performance evaluation of a pre-clinical SiPM-Based MR-Compatible PET Scanner

... the PET PMTs is small, due to light losses within the fibers, and these systems are difficult to scale ...human PET/MR scanner ...an MR-compatible PET photo detector ... See full document

7

No significant difference found in PET/MRI CBF values reconstructed with CT-atlas-based and ZTE MR attenuation correction

No significant difference found in PET/MRI CBF values reconstructed with CT-atlas-based and ZTE MR attenuation correction

... the PET image calcula- tions, brain cortices close to the sinus would show sig- nificant differences in regional radioactivity concentration, as well as on quantitative ...in attenuation correction, and is ... See full document

9

MR-based motion correction for cardiac PET parametric imaging: a simulation study

MR-based motion correction for cardiac PET parametric imaging: a simulation study

... using MRI to estimate both the cardiac and re- spiratory motion fields of the heart, a subject was scanned on a Siemens 3-T system using a fast low angle shot (FLASH) MRI sequence with golden-angle based ... See full document

14

[18F]FDG-PET/CT texture analysis in thyroid incidentalomas: preliminary results

[18F]FDG-PET/CT texture analysis in thyroid incidentalomas: preliminary results

... Radiomics is a post-processing approach correlating image texture parameters to clinical, genetic and prognostic variables, and it is applicable to all types of images. Time for texture processing varies among software ... See full document

13

Impact of PET acquisition durations on image quality and lesion detectability in whole-body 68Ga-PSMA PET-MRI

Impact of PET acquisition durations on image quality and lesion detectability in whole-body 68Ga-PSMA PET-MRI

... and attenuation-corrected images, dis- tinct halo artefacts around the kidneys and/or bladder were seen in five out of 12 cases ...the attenuation map derived from 300-s emission data for AC and SC, no such ... See full document

12

Comparison of PET.CT and MRI Imaging Scans Detection Methods for the Diagnosis of Gastric Cancer

Comparison of PET.CT and MRI Imaging Scans Detection Methods for the Diagnosis of Gastric Cancer

... X-ray attenuation at different soft tissues that leads to a lack of sufficient contrast between the adjacent anatomical ...tissues. MRI images compared to CT have higher contrast in showing the soft tissues ... See full document

6

MLAA-based attenuation correction of flexible hardware components in hybrid PET/MR imaging

MLAA-based attenuation correction of flexible hardware components in hybrid PET/MR imaging

... the scans. CT scans with the RF coil still in identical position and without RF coil were performed the next day, after the activity had ...the MR-based attenuation ...all attenuation ... See full document

23

ECR 2015 Book of Abstracts - A - Postgraduate Educational Programme

ECR 2015 Book of Abstracts - A - Postgraduate Educational Programme

... with PET/CT and SPECT/CT and recently PET/MR became a ...clinical scans focus on perfusion and here the attenuation correction based on the CT allows the reduction of artefacts and ... See full document

158

Modular Synthesis of Targeted Molecular Imaging Agents for MRI, PET, and PET-MRI of Cancer

Modular Synthesis of Targeted Molecular Imaging Agents for MRI, PET, and PET-MRI of Cancer

... as PET, rely on the use of radioactive ...CT scans, and while limited exposure (for example, that which is experienced during the acquisition of a single x-ray image) is safe for the average patient, ... See full document

109

Multi institutional quantitative phantom study of yttrium-90 PET in PET/MRI: the MR-QUEST study

Multi institutional quantitative phantom study of yttrium-90 PET in PET/MRI: the MR-QUEST study

... between scans and ...acquire PET data in a single station. At one of the sites, three back-to-back PET acquisitions (same phantom filling) were performed to evaluate intra-center ...Y PET data ... See full document

18

An artefact of PET attenuation correction caused by iron overload of the liver in clinical PET-MRI

An artefact of PET attenuation correction caused by iron overload of the liver in clinical PET-MRI

... of PET attenuation artefacts in combined clinical ...to MRI-based attenuation correction and the relative rarity of this artefact, it might not seem to be of paramount urgency to ... See full document

6

Developments in PET-MRI for Radiotherapy Planning Applications

Developments in PET-MRI for Radiotherapy Planning Applications

... Two scans of homogenous cylindrical phantoms were ...corrected PET volume, which showed improved homogeneity throughout the ...of PET photon attenuation from the breast ... See full document

158

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