Introduction to Photon-Counting Fundamentals Video

Slide:%Project.SceneNumber%.%Scene.SlideNumber% Continue Introduction to Photo-Counting Fundamentals Introduction to Photon-Counting Fundamentals Follow an expert and a student as they discuss photon-counting technology and explore the subject interactively. Master Template HILS2218 | Effective Date: 25 Mar 2022 ? Start Disclaimer Welcome Intro Photon-Counting Imaging This is a CT image of a stapes – the smallest bone in the human body – scanned with a high-end conventional CT. Move the slider to see the image of the same stapes, this time produced by Photon-Counting CT Technology with approximately 50% dose reduction for UHR scans compared to conventional CT detectors with UHR comb.* We will show you how such a quantum leap in clarity and precision is now possible. Before, let’s quickly review what happens with X-rays on conventional detectors. *For example, a CTDI_vol of 17 mGy or only 0.4 mSv effective dose for a scan range of 10 cm in an adult. Energy-Integrating Detector (EID) Photon-Counting Detector (PCD) Image courtesy of A. Persson, Linköping University, Linköping, Sweden ? Example of Photon-Counting Imaging Energy-Integrating Detector (EID) Basics Select the best answer. ? Tens Ten thousands Knowledge Check 1 of 3 What do you think: How many photons approximately arrive together at a single conventional detector element within one X-ray projection (in 250 microseconds)? Hundreds Thousands Knowledge Check 1 Incorrect You did not select the correct response. Correct That's right. You selected the correct response. Photons at a Single EID Element An energy-integrating detector cannot keep up and measure single photons. So, the detector measures approximately the tens of thousands of photons together. ? Photons at a Single EID Element Ceramic scintillator Collimator blades Ti02 based reflector Glue Photo-diodes energy-integrating detectors Converting EID Structure Select the best answer. ? Conversion of X-ray photons into visible light. Measurement of a photon total. Knowledge Check 2 of 3 What is the result of X-ray scintillation? Splitting of X-ray bundles into single photons. Chemical reaction of ceramic detector molecules. Knowledge Check 2 Incorrect The result of X-ray scintillation is the conversion of X-ray photons into visible light. Correct That's right. You selected the correct response. CdTe Semiconductor PCD photon-counting EID Limitations Select 3 answers. Knowledge Check 3 of 3 What are the differences between an EID and a PCD? ? A PCD uses a crystal semiconductor. An EID needs just one step to count photons. A PCD can measure within a few nanoseconds. A PCD can measure X-ray photons individually. Knowledge Check 3 Incorrect The difference is that a PCD uses a crystal semi-conductor and measures X-ray photons individually within a few nanoseconds. Continue Correct That's right. You selected the correct response. Continue Smaller detector pixels Elimination of electronic noise Intrinsic spectral sensitivity Equal contribution of lower energy quanta Photon-counting CT Key Advantages Outro Exit To access your Certificate of Completion, select the Certificates tab from the learning activity overview page. You can also access the certificate from your PEPconnect transcript. Disclaimer ? You have completed the Introduction to Photon-Counting Fundamentals Video. Completion details, certificates tab Disclaimer Please note that the learning material is for training purposes only. For the proper use of the software or hardware, please always use the Operator Manual or Instructions for Use (hereinafter collectively “Operator Manual”) issued by Siemens Healthineers. This material is to be used as training material only and shall by no means substitute the Operator Manual. Any material used in this training will not be updated on a regular basis and does not necessarily reflect the latest version of the software and hardware available at the time of the training. The Operator Manual shall be used as your main reference, in particular for relevant safety information like warnings and cautions. Please note: Some functions shown in this material are optional and might not be part of your system. Certain products, product related claims or functionalities (hereinafter collectively “Functionality”) may not (yet) be commercially available in your country. Due to regulatory requirements, the future availability of said Functionalities in any specific country is not guaranteed. Please contact your local Siemens Healthineers sales representative for the most current information. The reproduction, transmission or distribution of this training or its contents is not permitted without express written authority. Offenders will be liable for damages. All names and data of patients, parameters and configuration dependent designations are fictional and examples only. All rights, including rights created by patent grant or registration of a utility model or design, are reserved. Unrestricted | Published by Siemens Healthineers AG | © Siemens Healthineers AG, 2025 Siemens Healthineers HQ | Siemens Healthineers AG | Siemensstr. 3 91301 Forchheim, Germany | Phone: +49 9191 18-0 | siemens-healthineers.com ? Disclaimer Navigation Help The timeline displays the progression of the animation. Slide the orange bar backwards to rewind the timeline. Click Next to continue. Next Tmeline Select the PREV or NEXT buttons to navigate to the previous or next section. Be sure to review all topics before navigating to the next slide. Click Next to continue. Next Previous / Next Navigation Select Submit to record your response. Click the X in the upper right corner to exit the navigation help. Knowledge Check Slide Question Bank 1 QR700005767 / QR700016713 | Effective Date: 27 Mar 2025 1 Introduction to Photo-Counting Fundamentals 1.1 Welcome 1.2 Intro 1.3 Example of Photon-Counting Imaging 1.4 Energy-Integrating Detector (EID) Basics 1.7 EID Structure 1.9 EID Limitations 1.11 Outro 1.12 Completion 1.13 Disclaimer