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courses:446:2013:446-2013-4:metal_artifact_removal_in_c-arm_cone-beam_ct [2013/04/01 23:01]
ccaymar1@johnshopkins.edu [Other Resources and Project Files]
courses:446:2013:446-2013-4:metal_artifact_removal_in_c-arm_cone-beam_ct [2019/08/07 12:01] (current)
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 ======Metal Artifact Removal in C-Arm Cone Beam CT====== ======Metal Artifact Removal in C-Arm Cone Beam CT======
-Last checked: ​04/01/13, 10:00 pm+Last checked: ​05/08/13, 10:00 pm
  
 ======Summary====== ======Summary======
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   * **Phantom Construction** ​   * **Phantom Construction** ​
-    - Minimum: containing metal sphere and contrast vasculature ​--------------------->​ 2/10-2/23 +    - Minimum: containing metal sphere and contrast vasculature  
-    - Expected: containing coils and/or clips and contrast vasculature ​-------------->​ 3/22-3/30 +    - Expected: one containing stent, coils and contrast vasculature. One phantom containing surgical clips and contrast vasculature (Original plan: containing coils and/or clips and contrast vasculature 
-    - Maximum: containing ONYX and contrast vasculature ​----------------------------->​ 4/14-4/20+    - Maximum: containing ONYX and contrast vasculature ​
  
   * **Image Acquisition** ​   * **Image Acquisition** ​
-    - Minimum: workbench ​(flat panel, cone-beam CT in lab) -------> 2/24-3/9, 4/1-4/7, 4/21-4/27 +    - Minimum: workbenchflat panel, cone-beam CT in lab.  ​ 
-    - Expected: Zeego (C-arm, cone-beam, Siemens CT system) ​------> 4/1-4/7, 3/3-3/23, 4/​21-5/​11 ​ +    - Expected: Zeego (C-arm, cone-beam, Siemens CT system)  
-    - Maximum: construct converter to transfer data from bench to Zeego workstation ​-> 5/12+    - Maximum: none (Original plan: construct converter to transfer data from bench to Zeego workstation
  
   * **MAR Algorithm** ​   * **MAR Algorithm** ​
     - Minimum: run and implement algorithm     - Minimum: run and implement algorithm
-    - Expected: adapt and extend ​for performance improvement +    - Expected: adapt for performance improvement 
-    - Maximum: suggest ​and implement ​algorithm improvement+    - Maximum: suggest algorithm improvement ​(Original plan: extend and apply improvements)
    
   * **Data Analysis: Image Quality** ​   * **Data Analysis: Image Quality** ​
     - Minimum: quantitatively measure contrast resolution (CNR)     - Minimum: quantitatively measure contrast resolution (CNR)
-    - Expected: measure spatial resolution, artifact magnitude  +    - Expected: noise standard deviation (Original plan: measure spatial resolution, artifact magnitude 
-    - Maximum: ​other measurable parameters ​+    - Maximum: ​artifact magnitude ​
  
   * **Data Analysis: Segmentation Accuracy** ​   * **Data Analysis: Segmentation Accuracy** ​
     - Minimum: application of segmentation algorithm on image data     - Minimum: application of segmentation algorithm on image data
     - Expected: quantitatively measure segmentation accuracy ​     - Expected: quantitatively measure segmentation accuracy ​
-    - Maximum: segmentation algorithm improvement ​and suggestions ​+    - Maximum: segmentation algorithm improvement suggestions ​
 ======Technical Approach====== ======Technical Approach======
  
-The project is comprised of three stages: each will consist of the construction of a brain phantom, acquisition of phantom images and the assessment and analysis of image quality and MAR algorithm data. Below are quantitative and/or measurable variables and parameters. ​+The project is comprised of four (Original plan: threestages: each will consist of the construction of a brain phantom, acquisition of phantom images and the assessment and analysis of image quality and MAR algorithm data. Below are quantitative and/or measurable variables and parameters. ​
  
 === Phantom Construction === === Phantom Construction ===
   * **Dependent variables in metal fillings** ​   * **Dependent variables in metal fillings** ​
-    - diameter, ​volumesphericity, density, proximity ​to simulated ​vasculature ​structures, number and shape of coils and clips+    - for spheres and clips: quantity, ​diameter, ​materiallocation in relation ​to contrast ​vasculature and anatomy 
 +    - for clips and stents: quantity, material, diameter, length ​
  
   * **Dependent variables in simulated vasculature**   * **Dependent variables in simulated vasculature**
     - number of vessels, contrast, volume, length, shape, material (silicon, brain-equivalent jello, among others), location in the brain representative of various anatomical structures including berry aneurysms, taking into consideration areas of the brain where aneurysms are most commonly found.     - number of vessels, contrast, volume, length, shape, material (silicon, brain-equivalent jello, among others), location in the brain representative of various anatomical structures including berry aneurysms, taking into consideration areas of the brain where aneurysms are most commonly found.
  
-Manipulation of these variables will produce wanted measurable parameters (such as attenuation and contrast). ​Further investigation will be done to find the most efficient and effective way to construct these phantoms. +Manipulation of these variables will produce wanted measurable parameters (such as attenuation and contrast). ​
 === Image Acquisition === === Image Acquisition ===
-  * **Dependent variables in both systems**  +  * **Dependent variables in imaging ​systems**  
-    - Energy of beam (kVp), number of projections, dose, tube current, z-coverage (FOV) +    - Energy of beam (kVp), number of projections,​ z-coverage (FOV)
- +
-The Zeego/Axiom Artis Zee offers additional dependent variables (such as angulated-source detector orbits and acquisition modes). Further investigation will be done to acquire an extensive list of dependent and measurable parameters and their effects on image acquisition.+
  
 +All scans were performed on a C-arm Cone-Beam Axiom Artis Zee (Axiom Artis Zeego, Siemens Medical Solutions, Elangen, Germany) with a standard DynaCT Head 20s 70keV acquisition. ​
  
 === Data Analysis === === Data Analysis ===
   * **Image quality** ​   * **Image quality** ​
-    - Measurable parameters: Contrast resolution, ​Signal-to-noise ratio, Spatial resolution +    - Measurable parameters: Contrast ​resolution (CNR), ​resolution, noise std 
-    - Artifact magnitude: we will develop a parameter that will quantify the degradation of the background and surrounding structures caused by the presence ​of a metal artifact.+    - Artifact magnitude ​with selected ROI (region ​of interest)
  
   * **Segmentation accuracy**   * **Segmentation accuracy**
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   - Milestone name:  Construction of first-stage Phantom [metal sphere]   - Milestone name:  Construction of first-stage Phantom [metal sphere]
-    * Planned Date: 2/17-2/23 
     * Expected Date: 3/2     * Expected Date: 3/2
     * Status: completed ​     * Status: completed ​
-  - Milestone name:  First-stage image acquisition in experimental bench 
-    * Planned Date: 2/24-3/2 
-    * Expected Date: 3/9 
-    * Status: completed 
   - Milestone name:  First-stage image acquisition in Zeego   - Milestone name:  First-stage image acquisition in Zeego
-    * Planned Date: 3/3-3/9 
     * Expected Date: 3/23     * Expected Date: 3/23
     * Status: completed     * Status: completed
-  - Milestone name:  Construction of second-stage Phantom [coil and/or clip] +  - Milestone name:  Construction of second-stage Phantom [stent and coils]
-    * Planned Date: 3/24-3/30+
     * Expected Date: 3/30     * Expected Date: 3/30
-    * Status: ​incomplete +    * Status: ​completed
-  - Milestone name:  Second-stage image acquisition in experimental bench +
-    * Planned Date: 4/1-4/6 +
-    * Expected Date: 4/13 +
-    * Status: incomplete+
   - Milestone name:  Second-stage image acquisition in Zeego   - Milestone name:  Second-stage image acquisition in Zeego
-    * Planned Date: 4/1-4/6 
     * Expected Date: 4/20     * Expected Date: 4/20
-    * Status: ​incomplete +    * Status: ​completed 
-  - Milestone name:  Construction of third-stage Phantom [ONYX (liquid ​embolic system)+  - Milestone name:  Construction of third-stage Phantom [liquid ​embolus
-    * Planned ​Date: 4/14-4/20+    * Expected ​Date: 4/13 
 +    * Status: complete  
 +  ​Milestone name:  Third-stage image acquisition in Zeego
     * Expected Date: 4/20     * Expected Date: 4/20
-    * Status: ​incomplete +    * Status: ​complete 
-  - Milestone name:  ​Third-stage ​image acquisition in experimental bench +  - Milestone name:  ​Construction of fourth-stage ​Phantom [clip]
-    * Planned Date: 4/21-4/27+
     * Expected Date: 4/27     * Expected Date: 4/27
-    * Status: ​incomplete ​ +    * Status: ​complete ​ 
-  - Milestone name:  ​Third-stage image acquisition in Zeego +  - Milestone name:  ​Fourth-stage image acquisition in Zeego 
-    * Planned Date: 4/21-4/27 +    * Expected Date: 5/04
-    * Expected Date: 5/08+
     * Status: incomplete     * Status: incomplete
-**Schedule**+ 
 +**Original ​Schedule**
  
 {{ :​courses:​446:​2013:​446-2013-4:​schedule.png?​600 |}} {{ :​courses:​446:​2013:​446-2013-4:​schedule.png?​600 |}}
 +
 +**Revised Schedule**
 +
 +{{ :​courses:​446:​2013:​446-2013-4:​newschedule.png?​600 |}}
 ======Reports and presentations====== ======Reports and presentations======
  
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   * Project Checkpoint   * Project Checkpoint
     * {{:​courses:​446:​2013:​446-2013-4:​checkpoint.pdf|Checkpoint Presentation}}     * {{:​courses:​446:​2013:​446-2013-4:​checkpoint.pdf|Checkpoint Presentation}}
 +    * {{:​courses:​446:​2013:​446-2013-4:​secondcheckpoint.pptx| Quick Checkpoint Presentation}}
   * Project Reports   * Project Reports
-    * {{:​courses:​446:​2013:​446-2013-4:​phantom_construction.pdf|Phantom ​Construction Report}} +    * {{:​courses:​446:​2013:​446-2013-4:​phantom-con.pdf|Phantom ​construction and Image acquisition report}} 
-    * {{:​courses:​446:​2013:​446-2013-4:​data_analysis.pdf|MAR application ​Data Analysis Report}}+    * {{:​courses:​446:​2013:​446-2013-4:​data-an.pdf|MAR application ​and Data analysis report}}
     * {{:​courses:​446:​2013:​446-2013-4:​firstphantom_geometricartifacts_.pdf|First Phantom Images (with Geometric Artifacts)}}     * {{:​courses:​446:​2013:​446-2013-4:​firstphantom_geometricartifacts_.pdf|First Phantom Images (with Geometric Artifacts)}}
 +    * {{:​courses:​446:​2013:​446-2013-4:​rsna_abstract_images.pdf| Results }}
   * Paper Seminar Presentations   * Paper Seminar Presentations
     * {{:​courses:​446:​2013:​446-2013-4:​paperseminar_cay_.pdf|Paper Seminar, Cay-Martinez}}     * {{:​courses:​446:​2013:​446-2013-4:​paperseminar_cay_.pdf|Paper Seminar, Cay-Martinez}}
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     * {{:​courses:​446:​2013:​446-2013-4:​seminar_critical_review.pdf|Paper Seminar, Wells}}     * {{:​courses:​446:​2013:​446-2013-4:​seminar_critical_review.pdf|Paper Seminar, Wells}}
   * Project Final Presentation   * Project Final Presentation
-    * {{:​courses:​446:​2013:​446-2013-X:final_poster_pdf.pdf|PDF of Poster}}+    * {{:​courses:​446:​2013:​446-2013-4:projectposter.pdf|Poster}} 
 +    * {{:​courses:​446:​2013:​446-2013-4:​group_4_cis_teaser_slides.pptx|Teaser}}
   * Project Final Report   * Project Final Report
-    * {{:​courses:​446:​2013:​446-2013-X:final_report.pdf|Final Report}} +    * {{:​courses:​446:​2013:​446-2013-4:final_paper.pdf|Final Report}} 
-    ​* links to any appendices or other material+    ​
  
-Materials last updated: 04/01 10:00pm+Materials last updated: 04/29 7:00pm
 ======Project Bibliography======= ======Project Bibliography=======
    
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 ======Other Resources and Project Files====== ======Other Resources and Project Files======
-MATLAB code for ROI selection and value acquisition from DICOM images+ 
 +  * MATLAB code for ROI selection and value acquisition from DICOM images 
 +  * {{:​courses:​446:​2013:​446-2013-4:​cis_group_4_matlab_scripts.zip|Zip file}} 
courses/446/2013/446-2013-4/metal_artifact_removal_in_c-arm_cone-beam_ct.1364871697.txt.gz · Last modified: 2019/08/07 12:05 (external edit)




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