DICOM and Slicer: A Tutorial
Transcript of DICOM and Slicer: A Tutorial
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DICOM and Slicer: A Tutorial Sonia Pujol, Ph.D. Assistant Professor of Radiology Director of 3D Slicer Training & EducaDon Brigham and Women’s Hospital Harvard Medical School [email protected]
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ObjecDve
This tutorial provides a basic introducDon to the DICOM standard, and shows how to visualize DICOM images in 3D Slicer version 5.0
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Tutorial Outline
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Part 1: IntroducDon to DICOM
Part 2: DICOM and Slicer
Part 3: Loading and Visualizing DICOM data in Slicer
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Tutorial material
3D Slicer version 5.0 hVps://download.slicer.org
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SlicerDICOMTutorialData DICOM Torso CT
DICOM Breast MRI
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Disclaimer
• 3D Slicer is a free open source soXware applicaDon distributed under a BSD style license
• The soXware is not FDA approved or CE marked, and is for research use only
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Part 1: IntroducDon to DICOM
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Reproducible Science
• Reproducible science is criDcal to drive research and accelerate discoveries
• Open-source soXware tools such as 3D Slicer and data standards such as DICOM contribute to the reproducibility of scienDfic results in biomedical research
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F.A.I.R. Principles
• Findable: Data are easily findable • Accessible: Users know how to access the data,
including authenDcaDon and authorizaDon
• Interoperable: Data can be integrated with other data and can interoperate with applicaDons for storage and analysis
• Reusable: Data can be replicated or combined for new research
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TheFAIRGuidingPrinciplesforscien7ficdatamanagementandstewardship.Wilkinsonetal.Sci.Data2016hFp://go-fair.org/fair-principles SoniaPujolPhD,AllRightsReserved
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The DICOM standard
• DICOM (Digital Imaging and CommunicaDons in Medicine) is the internaDonal standard for handling, storing, prinDng and transmi`ng medical imaging data
• Clinical imaging equipment (CT scanners, MR scanners, X-Ray and ultrasound machines) generate DICOM files
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DICOM History
10 • 1982: The American College of Radiology (ACR) and the NaDonal Electrical Manufacturers AssociaDon (NEMA) iniDate standards for the interconnecDon of medical imaging devices
• 1985: PublicaDon of the ACR-NEMA Digital Imaging and CommunicaDons Standards version 1.0
• 1988: PublicaDon of the ACR-NEMA Digital Imaging and CommunicaDons Standards version 2.0
• 1993: PublicaDon of the ACR-NEMA Standards version 3.0 also referred to as the Digital Imaging and CommunicaDons in Medicine (DICOM) standard
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DICOM Today
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• The DICOM standard is conDnuously being refined to address new community needs through mulDple releases every year
• As of 2020/07/06, the DICOM standard is DICOM PS3 2020c and contains 4,000 pages
• DICOM Working Groups are established to expand the capabiliDes of the standard given the conDnuous evoluDon of imaging modaliDes
(e.g. WG-16 MagneDc Resonance) hVps://www.dicomstandard.org/wgs
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FAIR Data and the DICOM Standard
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The DICOM Standard facilitates compliance of imaging data with FAIR principles
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DICOM Data Model
• In the DICOM data model, a DICOM Study consists of several DICOM Series, and each DICOM Series contains DICOM Instances
• Each of the DICOM Studies, Series and Instances are assigned a Unique IdenDfier (UID)
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Instances Instances
Study
PaDent
Series Series Series
Instances
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Example of DICOM instances: DICOM MRI Image data
An MRI image is an example of DICOM instance that consists of a DICOM header and an image dataset
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Header
Raw Data
Image001.dcm
Image002.dcm
Image003.dcm
….
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§ The DICOM header contains metadata which include informaDon on the paDent, study and imaging data.
§ DICOM provides a standardized way to present metadata which makes it searchable
§ The metadata informaDon is accessible through DICOM tags
§ DICOM tags uniquely idenDfy DICOM aVributes
§ Original data from the scanner tell
users important elements about the acquisiDon
15Example of DICOM header content
0002,0000,File Meta Elements Group Len=148 0002,0001,File Meta Info Version=256 0002,0002,Media Storage SOP Class UID=1.2.840.10008.5.1.4.1.1.4. 0002,0003,Media Storage SOP Inst UID=0.0.0.0. 0002,0010,Transfer Syntax UID=1.2.840.10008.1.2.1. … 0008,0060,Modality=MR 0008,0070,Manufacturer=GE MEDICAL SYSTEMS 0008,0080,Institution Name=1852796513 0008,0081,City Name=1852796513 0008,0090,Referring Physician's Name=1852796513 0008,0092,?=1852796513 0008,0201,?=-0500 0008,1010,Station Name=1852796513 0008,1030,Study Description=anon 0008,103E,Series Description=anon 0008,1040,Institutional Dept. Name=1852796513 0008,1050,Performing Physician's Name=1852796513 0008,1060,Name Phys(s) Read Study=1852796513 0008,1070,Operator's Name=anon 0008,1080,Admitting Diagnosis Description=1852796513 0008,1090,Manufacturer's Model Name=GENESIS.SIGNA ….. 0010,0010,Patient's Name=anon 0010,0020,Patient ID=anon 0010,0030,Patient Date of Birth=00000000 0010,0032,Patient Birth Time=000000 0010,0040,Patient Sex=O 0010,1010,Patient Age=000Y …….. 0028,0010,Rows=256 0028,0011,Columns=256 0028,0030,Pixel Spacing=0.937500 0.937500 0028,0100,Bits Allocated=16 0028,0101,Bits Stored=16 0028,0102,High Bit=15 0028,0103,Pixel Representation=1 ……. 7FE0,0010,Pixel Data=131072
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0002,0000,File Meta Elements Group Len=148 0002,0001,File Meta Info Version=256 0002,0002,Media Storage SOP Class UID=1.2.840.10008.5.1.4.1.1.4. 0002,0003,Media Storage SOP Inst UID=0.0.0.0. 0002,0010,Transfer Syntax UID=1.2.840.10008.1.2.1. … 0008,0060,Modality=MR 0008,0070,Manufacturer=GE MEDICAL SYSTEMS 0008,0080,Institution Name=1852796513 0008,0081,City Name=1852796513 0008,0090,Referring Physician's Name=1852796513 0008,0092,?=1852796513 0008,0201,?=-0500 0008,1010,Station Name=1852796513 0008,1030,Study Description=anon 0008,103E,Series Description=anon 0008,1040,Institutional Dept. Name=1852796513 0008,1050,Performing Physician's Name=1852796513 0008,1060,Name Phys(s) Read Study=1852796513 0008,1070,Operator's Name=anon 0008,1080,Admitting Diagnosis Description=1852796513 0008,1090,Manufacturer's Model Name=GENESIS.SIGNA ….. 0010,0010,Patient's Name=anon 0010,0020,Patient ID=anon 0010,0030,Patient Date of Birth=00000000 0010,0032,Patient Birth Time=000000 0010,0040,Patient Sex=O 0010,1010,Patient Age=000Y …….. 0028,0010,Rows=256 0028,0011,Columns=256 0028,0030,Pixel Spacing=0.937500 0.937500 0028,0100,Bits Allocated=16 0028,0101,Bits Stored=16 0028,0102,High Bit=15 0028,0103,Pixel Representation=1 ……. 7FE0,0010,Pixel Data=131072
Physician and Study InformaDon
SoniaPujolPhD,AllRightsReservedThe Life Cycle of Medical Imaging Data - Sonia Pujol, Ph.D. Func?onal Magne?c Resonance Imaging: Data Acquisi?on and Analysis Harvard-MIT Health Sciences and Technology (HST.583)
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PaDent and Study informaDon
The Life Cycle of Medical Imaging Data - Sonia Pujol, Ph.D. Func?onal Magne?c Resonance Imaging: Data Acquisi?on and Analysis Harvard-MIT Health Sciences and Technology (HST.583)
0002,0000,File Meta Elements Group Len=148 0002,0001,File Meta Info Version=256 0002,0002,Media Storage SOP Class UID=1.2.840.10008.5.1.4.1.1.4. 0002,0003,Media Storage SOP Inst UID=0.0.0.0. 0002,0010,Transfer Syntax UID=1.2.840.10008.1.2.1. … 0008,0060,Modality=MR 0008,0070,Manufacturer=GE MEDICAL SYSTEMS 0008,0080,Institution Name=1852796513 0008,0081,City Name=1852796513 0008,0090,Referring Physician's Name=1852796513 0008,0092,?=1852796513 0008,0201,?=-0500 0008,1010,Station Name=1852796513 0008,1030,Study Description=anon 0008,103E,Series Description=anon 0008,1040,Institutional Dept. Name=1852796513 0008,1050,Performing Physician's Name=1852796513 0008,1060,Name Phys(s) Read Study=1852796513 0008,1070,Operator's Name=anon 0008,1080,Admitting Diagnosis Description=1852796513 0008,1090,Manufacturer's Model Name=GENESIS.SIGNA ….. 0010,0010,Patient's Name=anon 0010,0020,Patient ID=anon 0010,0030,Patient Date of Birth=00000000 0010,0032,Patient Birth Time=000000 0010,0040,Patient Sex=O 0010,1010,Patient Age=000Y …….. 0028,0010,Rows=256 0028,0011,Columns=256 0028,0030,Pixel Spacing=0.937500 0.937500 0028,0100,Bits Allocated=16 0028,0101,Bits Stored=16 0028,0102,High Bit=15 0028,0103,Pixel Representation=1 ……. 7FE0,0010,Pixel Data=131072
PaDent InformaDon
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PaDent and Study informaDon 0002,0000,File Meta Elements Group Len=148 0002,0001,File Meta Info Version=256 0002,0002,Media Storage SOP Class UID=1.2.840.10008.5.1.4.1.1.4. 0002,0003,Media Storage SOP Inst UID=0.0.0.0. 0002,0010,Transfer Syntax UID=1.2.840.10008.1.2.1. … 0008,0060,Modality=MR 0008,0070,Manufacturer=GE MEDICAL SYSTEMS 0008,0080,Institution Name=1852796513 0008,0081,City Name=1852796513 0008,0090,Referring Physician's Name=1852796513 0008,0092,?=1852796513 0008,0201,?=-0500 0008,1010,Station Name=1852796513 0008,1030,Study Description=anon 0008,103E,Series Description=anon 0008,1040,Institutional Dept. Name=1852796513 0008,1050,Performing Physician's Name=1852796513 0008,1060,Name Phys(s) Read Study=1852796513 0008,1070,Operator's Name=anon 0008,1080,Admitting Diagnosis Description=1852796513 0008,1090,Manufacturer's Model Name=GENESIS.SIGNA ….. 0010,0010,Patient's Name=anon 0010,0020,Patient ID=anon 0010,0030,Patient Date of Birth=00000000 0010,0032,Patient Birth Time=000000 0010,0040,Patient Sex=O 0010,1010,Patient Age=000Y …….. 0028,0010,Rows=256 0028,0011,Columns=256 0028,0030,Pixel Spacing=0.937500 0.937500 0028,0100,Bits Allocated=16 0028,0101,Bits Stored=16 0028,0102,High Bit=15 0028,0103,Pixel Representation=1 ……. 7FE0,0010,Pixel Data=131072
The Health Insurance Portability and Accountability Act of 1996 (HIPAA) protects the privacy and security of certain health informaDon
hVp://www.hhs.gov/hipaa/index.html
HIPPA PaDent privacy
The Life Cycle of Medical Imaging Data - Sonia Pujol, Ph.D. Func?onal Magne?c Resonance Imaging: Data Acquisi?on and Analysis Harvard-MIT Health Sciences and Technology (HST.583)
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PaDent InformaDon
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0002,0000,File Meta Elements Group Len=148 0002,0001,File Meta Info Version=256 0002,0002,Media Storage SOP Class UID=1.2.840.10008.5.1.4.1.1.4. 0002,0003,Media Storage SOP Inst UID=0.0.0.0. 0002,0010,Transfer Syntax UID=1.2.840.10008.1.2.1. … 0008,0060,Modality=MR 0008,0070,Manufacturer=GE MEDICAL SYSTEMS 0008,0080,Institution Name=1852796513 0008,0081,City Name=1852796513 0008,0090,Referring Physician's Name=1852796513 0008,0092,?=1852796513 0008,0201,?=-0500 0008,1010,Station Name=1852796513 0008,1030,Study Description=anon 0008,103E,Series Description=anon 0008,1040,Institutional Dept. Name=1852796513 0008,1050,Performing Physician's Name=1852796513 0008,1060,Name Phys(s) Read Study=1852796513 0008,1070,Operator's Name=anon 0008,1080,Admitting Diagnosis Description=1852796513 0008,1090,Manufacturer's Model Name=GENESIS.SIGNA ….. 0010,0010,Patient's Name=anon 0010,0020,Patient ID=anon 0010,0030,Patient Date of Birth=00000000 0010,0032,Patient Birth Time=000000 0010,0040,Patient Sex=O 0010,1010,Patient Age=000Y …….. 0028,0010,Rows=256 0028,0011,Columns=256 0028,0030,Pixel Spacing=0.937500 0.937500 0028,0100,Bits Allocated=16 0028,0101,Bits Stored=16 0028,0102,High Bit=15 0028,0103,Pixel Representation=1 ……. 7FE0,0010,Pixel Data=131072
Image InformaDon
The Life Cycle of Medical Imaging Data - Sonia Pujol, Ph.D. Func?onal Magne?c Resonance Imaging: Data Acquisi?on and Analysis Harvard-MIT Health Sciences and Technology (HST.583)
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0002,0000,File Meta Elements Group Len=148 0002,0001,File Meta Info Version=256 0002,0002,Media Storage SOP Class UID=1.2.840.10008.5.1.4.1.1.4. 0002,0003,Media Storage SOP Inst UID=0.0.0.0. 0002,0010,Transfer Syntax UID=1.2.840.10008.1.2.1. … 0008,0060,Modality=MR 0008,0070,Manufacturer=GE MEDICAL SYSTEMS 0008,0080,Institution Name=1852796513 0008,0081,City Name=1852796513 0008,0090,Referring Physician's Name=1852796513 0008,0092,?=1852796513 0008,0201,?=-0500 0008,1010,Station Name=1852796513 0008,1030,Study Description=anon 0008,103E,Series Description=anon 0008,1040,Institutional Dept. Name=1852796513 0008,1050,Performing Physician's Name=1852796513 0008,1060,Name Phys(s) Read Study=1852796513 0008,1070,Operator's Name=anon 0008,1080,Admitting Diagnosis Description=1852796513 0008,1090,Manufacturer's Model Name=GENESIS.SIGNA ….. 0010,0010,Patient's Name=anon 0010,0020,Patient ID=anon 0010,0030,Patient Date of Birth=00000000 0010,0032,Patient Birth Time=000000 0010,0040,Patient Sex=O 0010,1010,Patient Age=000Y …….. 0028,0010,Rows=256 0028,0011,Columns=256 0028,0030,Pixel Spacing=0.937500 0.937500 0028,0100,Bits Allocated=16 0028,0101,Bits Stored=16 0028,0102,High Bit=15 0028,0103,Pixel Representation=1 ……. 7FE0,0010,Pixel Data=131072
Pixel Data
The Life Cycle of Medical Imaging Data - Sonia Pujol, Ph.D. Func?onal Magne?c Resonance Imaging: Data Acquisi?on and Analysis Harvard-MIT Health Sciences and Technology (HST.583)
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Examples of Standard DICOM
Instances
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• DICOM images produced by imaging equipment: single X-Ray slice , DICOM CT or DICOM MR volume, DICOM mulD-frame object (e.g. fMRI experiment, diffusion MRI, DCE)
• DICOM SegmentaDon Object (SEG):
voxels labelled in regions of interest (ROIs) • DICOM Structured Report (SR):
clinical informaDon (e.g. diagnosis, pathology, surgery, etc.), measurements computed from segmented ROIs
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mented Structures Prostate gland, peripheral zone, lesion, normal Dssue
Volumes of prostate gland, peripheral zone, lesion, normal Dssue
DICOM Images
Measurements
Examples of Standard DICOM Instances
22Fedorov et al. Data Descriptor: An annotated test-retest collec?on of mul?parametric MRI. Sci. Data. 2016
DICOMSegmentedStructures
Prostate MRI Images
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DICOM Terminology
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• DICOM provides support for segmentaDon objects and annotaDons
• DICOM Structured Reports enable
provenance tracking
• DICOM derived data can be stored on a DICOM server or on other archive (e.g. TCIA) with permission, and is compliant with FAIR principles
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DICOM for ArDficial Intelligence Studies
• DICOM defines syntax rules and vocabularies that enable easy extracDon of knowledge from the data
• The DICOM framework for medical imaging data management enables the automaDon of cohort formaDon and maximizes the interoperability of the data for AI studies
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Anas et al. MICCAI 2017
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Part 2: DICOM and Slicer
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Slicer DICOM module
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• The Slicer DICOM module provides the infrastructure for storing, loading and exporDng DICOM data
• Slicer supports CT, MRI, PET, X-Ray and ultrasound DICOM data
• Dedicated Slicer Extensions can be added to Slicer for imporDng addiDonal DICOM instances (e.g. DICOM RT Dose, DICOM SegmentaDon Object, Diffusion Weighted MRI, etc.)
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Slicer DICOM module
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DICOM data loaded into
Slicer
DICOM database
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DICOM data can be imported into the Slicer DICOM database using the Import DICOM files buVon or via Drag&Drop
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The DICOM database follows the DICOM model hierarchy organized in paDents, studies and series
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Studies
PaDents
Series
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The DICOM database se`ngs pannel lets the user choose the locaDon of the database and enables database maintenance
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The DICOM networking pannel gives access to the DICOM Listener and DICOM Query/Retrieve funcDonaliDes of Slicer (Advanced users)
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Part 3: Loading and Visualizing DICOM data in Slicer
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Tutorial Dataset
• Download the SlicerDICOMTutorialData.zip file to your computer
• Create a SlicerData folder on your computer and move the SlicerDICOMTutorialData.zip file to the SlicerData folder
• Unzip the SlicerDICOMTutorialData.zip
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Start the 3D Slicer soXware and click on Load DICOM Data to access the DICOM module
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Click on DICOM database se`ngs
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Slicer displays the path to the default DICOM database locaDon
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Click on the default path and change it to the path of the SlicerData directory that you created
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Dataset #1 Torso CT
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Loading a DICOM dataset in Slicer
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Drag and drop the directory dataset1_TorsoCT into the DICOM module
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Click on paDent1 in the list of paDents
Slicer displays the corresponding study and series
Slicer displays the corresponding study and series
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Click on Examine
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Click on Load
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The DICOM dataset is loaded into Slicer as a paDent-study-series DICOM hierarchy
Instance:CTSlice
Study:CTThoraxAbdomen(20050601)
PaDent:paDent1(paDent1_ID)
Series:6:CT_ThoraxAbdomen
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Visualizing a DICOM dataset in Slicer
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Click on the Slicer GUI icon to display the list of Slicer layouts and select ConvenDonal
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Slicer displays the axial, coronal and sagiVal images of 6:CT_Thorax_Abdomen series
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Right-click on 6: CT_Thorax_Abdomen and select Edit properDes
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Click on the CT-abdomen preset to automaDcally adjust the window/level display of the CT dataset
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PosiDon the mouse cursor over the red banner in the Red Viewer to display the slice menu. Click on the Links icon to link the slice controls across all Slice Viewers Click on the Eye icon to display the three anatomical slices in the 3D Viewer
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The three anatomical slices appear in the 3D viewer
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Click on the Slicer layout menu icon, and select ConvenDonal Widescreen layout
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Slicer switches the layout to ConvenDonal Widescreen layout
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Use the right mouse button in the 3D Viewer to zoom in and out
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Use the right mouse buVon in the 3D Viewer to zoom out
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Use the leX mouse buVon in the 3D Viewer to rotate the images
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PosiDon the mouse cursor over the pin icon in the blue banner of the 3D viewer window to display the 3DView controller Click on the second icon on the top row of the 3DView controller to center the 3D view
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Click on the square icon next to the leVer ‘R’ to adjust the field of view
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Dataset #2 Breast MRI
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Breast MRI Dataset
• The Breast MRI dataset is part of the BREAST-DIAGNOSIS collecDon of The Cancer Imaging Archive (TCIA) of the NaDonal Cancer InsDtute
• The dataset was acquired on paDent with right breast infiltraDng ductal carcinoma
• The DICOM images consist of one study and three series: T2, STIR and BLISS
• BLISS is an MRI sequence for breast MRI studies. BLISS provides the measurement of two bilateral volumes in a single acquisiDon.
Bloch, B. Nicolas, Jain, Ashali, & Jaffe, C. Carl. (2015). Data From BREAST-DIAGNOSIS. The Cancer Imaging Archive. hVp://doi.org/10.7937/K9/TCIA.2015.SDNRQXXR
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Drag and drop the directory dataset2_BreastMRI into the DICOM module
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Slicer imports the dataset2_BreastMRI directory into the DICOM database The directory contains 1 paDent, 1 study and 3 series
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Click on the PaDentID BreastDx-01-0005 to display the study and the three T2W, STIR and BLISS series
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Click on the double arrow to display the list of DICOM readers
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The list of DICOM plugins appear
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Slicer DICOM Plugins
• Slicer implements a list of DICOM plugins to handle a diverse set of DICOM data objects
• These plugins need to be enabled in order to read specific DICOM data objects such DICOM RT data or DICOM DWI data
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Click on Load to load the data into Slicer
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Slicer loads the three series of the breast MRI dataset
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DICOM data are loaded into Slicer as a paDent-study-series hierarchy
Instance:MRslice
Instance:MRslice
Study:MRIBREASTBILATERALWITHTWITHOUTCONTRAST(20081111)
PaDent:Noname(BreastDx-01-0005)
Series:301:T2W_TSESENSE
Instance:MRslice
Series:401:STIRSENSE
Series:AXBLISSAUTO_SENSE
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Click on the layout menu and select Yellow slice only
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Click on the Adjust window/level buVon, and use the leX mouse buVon in the 2D view to adjust the window and level of the MR images
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Click on Play to playback the series of BLISS images
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Slicer starts playing the BLISS sequence
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Conclusion
• This tutorial introduced the DICOM standard and showed how to load and visualize DICOM CT and MR images in Slicer
• 3D Slicer and the DICOM standard enable compliance with the FAIR principles for biomedical research
• By enabling interoperability between research and clinical environments, 3D Slicer and the DICOM standard lower the inherent barriers to the translaDon of research advances to paDent care
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Acknowledgments
Neuroimaging Analysis Center (NIBIB P41 EB015902)
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