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17 results for “motion correction”
Data from Study: Respiratory Motion Correction of PET using MR-Constrained PET-PET Registration
<p>This dataset contains the data used to arrive at the conclusions in the research article <em>Respiratory Motion Correction of PET using MR-Constrained PET-PET Registration</em>, by Balfour et al [<em>BioMedical Engineering OnLine</em> 2015, <strong>14</strong>:85].</p> <p>This study was based upon motion-affected PET images simulated from real dynamic MR image volumes, simulated and reconstructed using the Software for Tomographic Image Reconstruction ("STIR", see http://stir.sourceforge.net/). This dataset includes data from MR scans of 4 healthy volunteers (male, aged 22-33).</p> <p>Three types of data are provided, which should be sufficient for repeating the findings of the study:</p> <ul> <li>Reconstructed PET image volumes, split into 6 respiratory bins ("gates") for each simulation</li> <li>The dynamic 3D MR volumes used to derive the respiratory motion of each volunteer</li> <li>Text files outline which dynamics have NOT been used for PET simulation - these are the ones used to make the motion model in the study</li> </ul> <p>These MR volumes were registered and combined with the head-foot position of the right hemidiaphragm to form a respiratory motion model, which was subsequently used to constrain PET to PET image registration, attempting to correct for the motion in the PET images.</p> <p>For more detailed information regarding the method, please refer to the article.</p> <p>The PET data is split into several sub-categories:</p> <ul> <li>Volunteer ID (4 possibilities, anonymised)</li> <li>Lesion position (9 possibilities - see article for locations)</li> <li>Lesion diameter, in millimetres (10 or 14 mm)</li> <li>Respiratory gate number, ranging from 1 (most inhaled) to 6 (most exhaled)</li> </ul> <p>Note that there are two types of each simulation: with motion, and without motion. These are included in the respective zip files for each volunteer ID.</p> <p> </p>
The free-breathing motion-corrected phase sensitive inversion recovery sequence provides improved myocardial fibrosis evaluation while significantly shortening acquisition time upon comparison to conventional gradient echo sequences: a tripartite comparison of phase-sensitive inversion recovery sequences.
<p>This article includes original research performed at a US Academic Center related to comparison of three separate Phase-Sensitive Inversion Recovery (PSIR) pulse sequences (Breath-hold Single-Shot SFFP, Breath-hold TurboFLASH, and Free-breathing Motion-Corrected SSFP) evaluating the ability of each PSIR sequence to demonstrate myocardial hyperenhancement. All three PSIR sequences were performed as a part of a cardiac MRI performed on a patient clinically referred for cardiac MRI with and without contrast. A total of 28 patients were examined with the three PSIR sequences. All three PSIR sequences were performed in the short axis 10 – 25 minutes after intravenous injection of a Gadolinium-based contrast agent. </p> <p>Evaluation of the PSIR sequences ability to detect myocardial late gadolinium enhancement (LGE) was performed by a retrospective review by two blinded, experienced cardiovascular imagers. The review was a qualitative inspection that included grading by a 5-point Likert scale for the sequence’s ability to resist motion artifact, image resolution, ability to visualize hyperenhancement, and overall satisfaction. The number of myocardial segments demonstrating LGE was also quantitated, and the acquisition time of each PSIR sequence was performed.</p> <p>To our knowledge this is the first study that compares the 3 available PSIR LGE sequences with a specific attention to acquisition time (TA). Given our initial study resulted in the conclusion that the motion-corrected SSFP PSIR sequence was superior the the TurboFLASH Gradient Echo PSIR sequence in regards to evaluator grading and acquisition time efficiency.</p>
The Free-Breathing Motion-Corrected Phase Sensitive Inversion Recovery Sequence Provides Improved Myocardial Fibrosis Evaluation while Significantly Shortening Acquisition Time Compared to Conventional Gradient Echo Sequences.
<p>This article includes original research performed at a US Academic Center related to comparison of three separate Phase-Sensitive Inversion Recovery (PSIR) pulse sequences (Breath-hold Single-Shot SFFP, Breath-hold TurboFLASH, and Free-breathing Motion-Corrected SSFP) evaluating the ability of each PSIR sequence to demonstrate myocardial hyperenhancement. All three PSIR sequences were performed as a part of a cardiac MRI performed on a patient clinically referred for cardiac MRI with and without contrast. A total of 28 patients were examined with the three PSIR sequences. All three PSIR sequences were performed in the short axis 10 – 25 minutes after intravenous injection of a Gadolinium-based contrast agent. </p> <p>Evaluation of the PSIR sequences ability to detect myocardial late gadolinium enhancement (LGE) was performed by a retrospective review by two blinded, experienced cardiovascular imagers. The review was a qualitative inspection that included grading by a 5-point Likert scale for the sequence’s ability to resist motion artifact, image resolution, ability to visualize hyperenhancement, and overall satisfaction. The number of myocardial segments demonstrating LGE was also quantitated, and the acquisition time of each PSIR sequence was performed.</p> <p>To our knowledge this is the first study that compares the 3 available PSIR LGE sequences with a specific attention to acquisition time (TA). Given our initial study resulted in the conclusion that the motion-corrected SSFP PSIR sequence was superior the the TurboFLASH Gradient Echo PSIR sequence in regards to evaluator grading and acquisition time efficiency.</p>
MRI Raw Data for 2024 ISMRM Workshop on Motion Correction
Open the record for dataset details and reuse information.
Improving PET Image Quality and Quantification by Using Motion Correction, Parametric Imaging and MAP Reconstruction
ClinicalTrials.gov study NCT04417998. IPD Sharing: NO. Countries: 1. Publications: 0.
Motion Correction of Positron Emission Tomography (PET) Data Using Amplitude Gating
ClinicalTrials.gov study NCT00843219. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Motion Correction in Dynamic Contrast Enhanced Magnetic Resonance Imaging (MRI) in Ovarian Cancer: A Pilot Study
ClinicalTrials.gov study NCT00946140. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Limbs Range of Motion Exercises Along With Chest Physical Therapy After Correction of Congenital Heart Diseases in ICU
ClinicalTrials.gov study NCT05425173. IPD Sharing: NO. Countries: 1. Publications: 0.
Change of Range of Motion of TMJ After Correction of Pelvic a Symmetry in Women With Cyclic Pelvic Pain
ClinicalTrials.gov study NCT04077788. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Use of Motion Sensors in Correction Procedures of Long Bone Deformities in the Pediatric Age Group
ClinicalTrials.gov study NCT06516497. IPD Sharing: YES. Countries: 1. Publications: 0.
The Effectiveness of the Twin Block and Carriere Motion Appliances in Post-pubertal Patients and an Evaluation of the Impact of Class II Malocclusion and Its Correction on Oral Health-related Quality
ClinicalTrials.gov study NCT07292636. IPD Sharing: YES. Countries: 1. Publications: 0.
Evaluation of Respiratory Motion-Corrected Cone-Beam CT in Radiation Treatment of Thoracic and Abdominal Cancers
ClinicalTrials.gov study NCT01213004. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Rapid Pancreatic and Ovarian Screening MR Imaging With Motion Corrected T1, T2, and Advanced Diffusion Weighted Imaging for Patients With BRCA Mutation Who Undergo Screening Breast MRI
ClinicalTrials.gov study NCT02462460. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Respiratory Motion-Corrected Cone-Beam CT and Intratreatment Gating Based on Electromagnetic Transponders to Reduce Target Position Uncertainty in Radiation Treatment of Lung Malignancies
ClinicalTrials.gov study NCT02434809. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Respiratory Motion Correction of Cardiac Combined Positron Emission Tomography and Magnetic Resonance Imaging (PET/MRI)
ClinicalTrials.gov study NCT03200132. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Validation of an Intracycle CT Motion CORrection Algorithm for Diagnostic AccuracY
ClinicalTrials.gov study NCT01856504. IPD Sharing: Not stated. Countries: 5. Publications: 0.
Effects of Corrective Helmet Therapy on Cervical Motion and Thermoregulation in Children With Positional Deformities
ClinicalTrials.gov study NCT07201324. IPD Sharing: Not stated. Countries: 0. Publications: 0.
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OpenNeuro
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