From Signals to Image by Haim Azhari & John A. Kennedy & Noam Weiss & Lana Volokh
Author:Haim Azhari & John A. Kennedy & Noam Weiss & Lana Volokh
Language: eng
Format: epub
ISBN: 9783030353261
Publisher: Springer International Publishing
Nuclear medicine images, like other medical images, are normally stored or transferred in formats standard for clinical images. These formats have a section of the image file called a “header” that contains clinically relevant information such as the patient’s name, identification number, date of birth, and other identifying characteristics. For NM images, the header also typically contains the pixel size, pixel scaling, start time of the scan, duration of the scan, and slice thickness for emission tomography. For absolute quantitative SPECT (and PET), additional relevant information is included, such as activity of injected dose, time of injection, dose remaining in the syringe after injection, half-life of the radiotracer used, camera sensitivity, patient weight, and patient height. For planar scans, the camera sensitivity is taken from a calibration measurement that relates the number of events detected by the camera to the radiotracer activity within the FOV of the camera (e.g., in kcounts/s per MBq). If available, this information can then be read from the header and used to relate the intensity of the image within an ROI to an absolute radiotracer concentration. Common formats used in NM or PET are DICOM (digital imaging and communications in medicine) and ECAT (emission computed aided tomography).
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Biochemistry | Biomedical Engineering |
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