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Medical Imaging System Ku-Yaw Chang [email protected] Assistant Professor, Department of Computer Science and Information Engineering Da-Yeh University Outline Background DICOM PACS 2004/2/26 An Introduction to Medical Imaging System 2 Background Digital diagnostic imaging modalities 2004/2/26 Computed tomography (CT) Magnetic resonance imaging (MRI) Positron emission tomography (PET) Single-photon emission computed tomography (SPECT) Ultrasound (US) Functional MRI (fMRI) An Introduction to Medical Imaging System 3 Background Structural/anatomical information CT, MRI and US Functional information 2004/2/26 PET, SPECT, and fMRI An Introduction to Medical Imaging System 4 CT 2004/2/26 An Introduction to Medical Imaging System 5 CT 2004/2/26 An Introduction to Medical Imaging System 6 CT 2004/2/26 An Introduction to Medical Imaging System 7 CT 2004/2/26 An Introduction to Medical Imaging System 8 MR 2004/2/26 An Introduction to Medical Imaging System 9 MR 2004/2/26 An Introduction to Medical Imaging System 10 MR 2004/2/26 An Introduction to Medical Imaging System 11 US 2004/2/26 An Introduction to Medical Imaging System 12 US 2004/2/26 An Introduction to Medical Imaging System 13 US 2004/2/26 An Introduction to Medical Imaging System 14 PET 2004/2/26 An Introduction to Medical Imaging System 15 PET 2004/2/26 An Introduction to Medical Imaging System 16 PET 2004/2/26 An Introduction to Medical Imaging System 17 PET 2004/2/26 An Introduction to Medical Imaging System 18 DICOM Digital Imaging and COmmunications in Medicine An evolving standard in digital medicine DICOM an image or file format a networking protocol built on top of TCP/IP designed to store and transmit medical data 2004/2/26 An Introduction to Medical Imaging System 19 DICOM Official website 2004/2/26 http://medical.nema.org/ http://www.dicom.org.tw/index.jsp (Taiwan) An Introduction to Medical Imaging System 20 Advantages (1) Universal standard of digital medicine. 2004/2/26 All current digital image acquisition devices produce DICOM images and work on DICOM networks. An Introduction to Medical Imaging System 21 Advantages (2) Excellent image quality. 2004/2/26 DICOM supports up to 65536 (16 bits) shades of gray for the monochrome image display, still dominating many modalities. With this respect, converting DICOM images into JPEGs or bitmaps (with 256 shades of gray) makes them practically unusable for diagnostic reading. On the other hand, DICOM does include various image-encoding formats, from basic bitmapped data to wavelets. An Introduction to Medical Imaging System 22 Advantages (3) Full support for image-acquisition parameters. 2004/2/26 Not only does DICOM store the image pixels, but it also records a multitude of other image-related parameters such as patient 3D position, physical sizes of the objects in the image, slice thickness, image exposure parameters, etc. This data enormously enriches the informational content of DICOM images, and facilitates processing and interpreting the image data in various ways - for instance, creating 3D images from the sequences of 2D CT slices. An Introduction to Medical Imaging System 23 Advantages (4) Complete encoding of medical data. 2004/2/26 DICOM files and messages use about 4000 standardized fields ("DICOM dictionary") to convey various medical data - from patient name to image color depth to current patient diagnosis. This data is often essential for correct diagnostics. An Introduction to Medical Imaging System 24 PACS Picture Archiving and Communication Systems complete medical systems with all hardware and software included, Components archiving servers (one or many, for online and deep storage) diagnostic workstations digital image acquisition devices DICOM conformance statement 2004/2/26 ensuring their conformance to the standard and interconnectivity. An Introduction to Medical Imaging System 25 PACS Integrated with 2004/2/26 HIS: Hospital(Healthcare) Information System RIS: Radiology Information System An Introduction to Medical Imaging System 26 marosisTM m-gate 2004/2/26 An Introduction to Medical Imaging System 27 Reference Website GE Medical Systems http://www.gemedicalsystems.com/index.html Fujitsu (Taiwan) 2004/2/26 http://tw.fujitsu.com/ An Introduction to Medical Imaging System 28 See you next time! 2004/2/26 An Introduction to Medical Imaging System 29