Essays about: "NEMA"

Showing result 1 - 5 of 12 essays containing the word NEMA.

  1. 1. Activity quantification of 177Lu using a 360◦ CZT gamma camera - comparison with a dual-head Anger camera

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Albin Lindvall; [2023]
    Keywords : Medicine and Health Sciences;

    Abstract : Background and Aim: New SPECT cameras that use CZT detectors in a 360◦ configuration has recently been introduced. Together with Bayesian reconstruction methods employing Median Root Prior (MRP) and Relative Difference Prior (RDP), this constitutes an alternative to Anger-based SPECT for activity quantification. READ MORE

  3. 2. Effects of reconstruction parameters on the image quality and quantification of PET images from PET/MRI and PET/CT systems

    University essay from

    Author : Ali Amena Hussain; [2022-03-09]
    Keywords : Medical physics; PET CT; PET MRI; OSEM; BPL; NEMA IQ; positron emission tomography; magnetic resonance imaging; computed tomography; ordered Subset Expectation Maximization; The Bayesian Penalized Likelihood;

    Abstract : Aim: To study how reconstruction parameters affect the positron emission tomography (PET) image quality and quantitative results for the different lesion to background radioactivity ratios in three different PET systems. Introduction: Multimodality imaging that combines magnetic resonance imaging (MRI) or computed tomography (CT) with a PET system can produce medical images containing both functional and anatomical information. READ MORE

  4. 3. Students' perspective on environmental sustainability: a reality check.

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : ROXANA IONESCU; NEMA ALI; [2020]
    Keywords : ;

    Abstract : Environmental sustainability is clearly one of the most ardent problems that societies are facing today. The new face of the world seen from globalization perspective, sometimes results in corporations being stronger than states, by twisting the politics to play in their favour. READ MORE

  5. 4. Quantification of I-131 Activity from Gamma Camera Images of Thyroid Cancer Patients

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Frida Westerbergh; [2019]
    Keywords : Physics and Astronomy;

    Abstract : BACKGROUND: Radioiodine (131I) has been used in thyroid cancer treatments for many years, and has demonstrated good results with regards to disease management. Radioiodine therapy is however partially empirical, as not very much is known concerning radiation dosimetry. READ MORE

  6. 5. Low dose CT for attenuation correction in PET. Validation of quantification for different patient sizes.

    University essay from Stockholms universitet/Fysikum

    Author : Anders Törnblom; [2019]
    Keywords : Attenuation correction PET PET CT dose CTDI ALARA Q.AC Phantom NEMA GE;

    Abstract : Introduction: Despite the relatively low dose (0.5 mSv – 1 mSv) generated by Attenuation Correction CT (ACCT) in PET examinations, the ALARA principle is still applicable. The currently used ACCT standard protocol at the Karolinska University Hospital in Solna uses 7. READ MORE