Enterprise Imaging

Hello All, Please review the following letter ballot and advise by March 8th, 2023 if you have any comments or concerns. Letter Ballot for Proposed DICOM Supplement 229 Photoacoustic Imaging Issued: 2023-02-02 Ballot closes: 2023-03-09 The following is a Letter Ballot seeking DICOM Standard Committee (DSC) approval of the Proposed Supplement 229: Photoacoustic Imaging. Only the officially designated voting representatives (or alternates) of the Members of the DICOM Standards Committee are invited and entitled to cast a ballot. Others on the Committee receive a copy of this ballot as a courtesy so that all will be apprised of anticipated revisions or extensions to the DICOM Standard. Scope and Field of Application This Supplement to the DICOM Standard introduces a new IOD and a new storage SOP Class for encoding and storing photoacoustic images. Photoacoustic (PA) imaging is an imaging modality that enables imaging optical absorption in biological tissues with acoustic resolution. Contrast is generated through absorption by chromophores that range from intrinsic absorbers such as hemoglobin and melanin to extrinsic agents such as indocyanine green (ICG) or diverse types of nano-particles. In principle, excitation at multiple wavelengths allows the modality to discriminate individual chromophores. Prospective applications in the space of clinical imaging range from classification of breast cancer lesions through screening of sentinel lymph nodes to assessment of inflammation. Photoacoustic Imaging is in widespread use in preclinical research labs and is currently being translated to clinical applications in first commercial implementations. Many (but not all) PA implementations integrate active pulse/echo ultrasound in a hybrid imaging system to capitalize on well-established contrast for anatomical information. The scope of this IOD is the Photoacoustic (PA) image. Complementary images such as pulse/echo ultrasound are represented by their native DICOM IODs. Albeit fusing PA images with US images for display is the presently most common scenario, the particulars of the fusion are beyond the scope of this IOD but examples are provided. PA images represent image output generated by the input of one or more optical excitation wavelengths. The following items are considered out of scope: ● Photoacoustic specific SR file implementation is reserved for a later supplement. ● If a PA device produces an image with no PA optical image, the SOP class of the structural image (e.g. ultrasound) will be used ● If a PA device creates a single image component by fusing the structural image to the PA image for display as a single image (burned in), it will use the SOP class of the structural image. ● A closely related imaging modality is Thermoacoustic imaging (TAI) which uses microwave radiation to excite the tissue (in contrast to light pulses). The specific characteristics of TAI were not addressed in this supplement and focus was given to photoacoustic imaging as defined herein, where excitation is limited to pulsed light. Hence, this modality is excluded in this supplement to limit the scope of the present supplement. Supplement 229 can be accessed on the FTP: Word Document format: ftp://medical.nema.org/medical/dicom/Supps/LB/sup229_lb_photoacoustic.docx PDF format: ftp://medical.nema.org/medical/dicom/Supps/LB/sup229_lb_photoacoustic.pdf PowerPoint Overview: ftp://medical.nema.org/medical/dicom/Supps/LB/sup229_lb_photoacoustic.pptx

Hello All, Please review the following letter ballot and advise by March 8th, 2023 if you have any comments or concerns. DICOM Letter Ballot: Supplement 231 Variable Modality LUT Softcopy Presentation State Issued: 2023-02-03 Ballot closes: 2023-03-10 The following is a Letter Ballot seeking DICOM Standard Committee (DSC) approval of the Proposed Supplement 231: Variable Modality LUT Softcopy Presentation State. Only the officially designated voting representatives (or alternates) of the Members of the DICOM Standards Committee are invited and entitled to cast a ballot. Others on the Committee receive a copy of this ballot as a courtesy so that all will be apprised of anticipated revisions or extensions to the DICOM Standard. Scope and Field of Application This supplement defines a new Presentation State SOP Class for both grayscale and pseudo-color. This new SOP class differs from existing SOP classes in that it allows the Modality LUT to be controlled for each image or frame. This is intended for modalities in which the dynamic range varies between images or frames, resulting in each referenced image having a different Modality LUT. In DICOM, Presentation States are intended to be a complete specification of the presentation in order to provide consistent presentation. An aspect of this is that PS3.4 N.2.1.1 requires the Modality LUT in the image be ignored in the presence of a GSPS object, even if no Modality LUT is explicitly defined in the GSPS. Further, the GSPS only supports one Modality LUT. This is problematic in cases such as PET or MR, in which the dynamic range of the measured values varies between images. Without this new SOP Class, the GSPS creator would be forced to render multiple GSPS objects, one for Modality LUT change. Supplement 231 can be accessed on the FTP: Word Document format: ftp://medical.nema.org/medical/dicom/Supps/LB/sup231_lb_VariableModalityLUT_PS.docx PDF format: ftp://medical.nema.org/medical/dicom/Supps/LB/sup231_lb_VariableModalityLUT_PS.pdf PowerPoint Overview: ftp://medical.nema.org/medical/dicom/Supps/LB/sup231_lb_VariableModalityLUT_PS.pptx

The 2023a release of the DICOM standard is now available from the NEMA site: http://www.dicomstandard.org/current/ It is also indexed from the status page at: http://www.dclunie.com/dicom-status/status.html This replaces the 2022e release. Release notes are at: http://dicom.nema.org/medical/dicom/current/output/pdf/releasenotes_2023a.pdf The changes from the 2022e release are shown highlighted in PDF files; note that changes to figures are not detected and some changed figures are not rendered in the diff files: http://www.dclunie.com/dicom-status/status.html#DiffsStandard2022e2023a

Attention all pathologists, scientists, and medical imaging professionals! Join us for a thought-provoking presentation by Vincent Quoc-Huy Trinh, a leading pathologist at the Centre Hospitalier de l'Université de Montréal and a pioneer in the field of computational pathology. Are you curious about how digital and computational technology is impacting the field of pathology? Dr. Trinh will take you on a journey through the exciting world of computational pathology, where advanced computational techniques such as machine learning are being used to analyze large amounts of data for more accurate and consistent diagnoses. This can lead to improved patient outcomes and more efficient use of resources. As a pathologist-scientist, Dr. Trinh will share his insights and experience on how this technology is being used in the clinic and in research. He will also discuss the future perspectives of computational pathology and the potential benefits it could bring to patients and medical professionals alike. Don't miss this opportunity to learn from a true expert in the field! The webinar is scheduled for Feb 10 from 12 pm-1 pm EST and will be held on Zoom. Register now via this link: https://infoway-inforoute.zoom.us/meeting/register/tZErduqhpzMsEtGOyaqZP_Jv1cR4kCmGoo4O

Don't miss out on the opportunity to learn from industry experts about the benefits and challenges of implementing digital pathology in your organization. Join us for a Canada Health Infoway health webinar featuring Dr. Bich N. Nguyen, who will share her firsthand experiences and offer valuable insights and best practices for a successful transition. Register now to get a head start on your own digital pathology journey: https://lnkd.in/gXrXahvz After registering, you will receive a confirmation email containing information about joining the meeting. During the webinar, attendees will have the opportunity to: -Learn about the requirements for a successful implementation of digital pathology for primary diagnosis -Understand the gains and limitations of digital pathology for primary diagnosis from a case study at CHUM -Discover future perspectives of digital pathology for clinical use. Don't miss out on this informative session and the chance to network with other professionals in the field. Register now!

Dear Enterprise Imaging Community: The 2022e release of the DICOM standard is now available from the NEMA site: http://www.dicomstandard.org/current/ It is also indexed from the status page at: http://www.dclunie.com/dicom-status/status.html This replaces the 2022d release. Release notes are at: http://dicom.nema.org/medical/dicom/current/output/pdf/releasenotes_2022e.pdf The changes from the 2022d release are shown highlighted in PDF files; note that changes to figures are not detected and some changed figures are not rendered in the diff files: http://www.dclunie.com/dicom-status/status.html#DiffsStandard2022d2022e Best Regards, Joanie Harper Specialist, Standards Canada Health Infoway