Computed tomography recent history and future perspectives

  • How has the CT scan changed over the years?

    20 Years ago, a CT exam could take 30 minutes or more.
    Now, a CT exam can collect images and information in less than 1-2 seconds.
    Adaptive Statistical, model based, and hybred Iterative image reconstruction techniques (have contributed to 70% - 80% radiation dose reduction over past 4 years..

  • What are the recent advances in computed tomography?

    In recent years, there have been several notable advances in CT technology that already have had or are expected to have a significant clinical impact, including extreme multidetector CT, iterative reconstruction algorithms, dual-energy CT, cone-beam CT, portable CT, and phase-contrast CT..

  • Increased power and availability of computers in the 1960s sparked the research to create practical computational tomographic images.
    In 1967 Sir Godfrey Hounsfield invented the first CT scanner at EMI Central Research Laboratories using x-ray technology.
  • The final generation of CT which is truly a different acquisition method is that of 5th generation CT.
    In all of the other methods above there is significant mechanical motion of the parts on the gantry.
    In 5th generation CT both the x-ray source material and the detector are stationary.
  • The spatial resolution of next-generation CT has increased to 150–200 \xb5m and allows improved depiction of heavily calcified vessels and stents.
    Photon-counting CT is a form of spectral CT that uses detectors to enable high spatial resolution, multicontrast imaging, and improved material decomposition.
Aug 11, 2021Abstract. Purpose: We provide a review of the key computed tomography (CT) technologies developed since the late 1980s and offer an overview of 
Aug 11, 2021Approach: The review is divided into five major sections, each linked to a key innovation in CT: helical spiral data acquisition, multi-slice CT 
Aug 11, 2021Conclusions: Over the past 30 years, technological developments of CT have contributed to the success of CT in many clinical applications such 

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