Category Topics

Slice Thickness and Partial Volume in CT

Mammography is a specialized imaging technique used for the early detection of breast cancer. The effectiveness of mammography largely depends on the choice of target anode and filter combinations, which influence the quality of the X-ray beam and the resulting image contrast. This…

CT Image Quality CT image quality is a critical aspect of medical imaging that directly impacts diagnostic accuracy and patient outcomes. This document explores the various factors that influence the quality of computed tomography (CT) images, including technical parameters, patient…

  Contents 1.      – Introduction to radionuclide imaging 2.      Atomic structure 3.      Radioactivity Lecture no 1 1-introduction to nuclear imaging: ·      In nuclear imaging, we are using radionuclides to be injected into the patient for imaging or therapy purposes.  ·      The radionuclide is targeted toward…

  Contents 1-X-Ray beam attenuation 2- X-Ray tube 3-Tube rating and cooling 4- Line focus principle 5-Anode heel effect   6-off focus radiation   7-Questions 1-X-Ray beam attenuation: ·      X-Ray is produced from an X-ray tube with different energies (Poly-Energetic). ·      The…

Screen Film Radiography 1-Screen Film Radiography The imaging principle: ·      Patient’s body is composed of different materials with different attenuation properties. ·      If an X-ray incident on the patient, the high-density material (Bone) will absorb a high amount of radiation, while the…

Why Increasing the kVs utilised during imagine acquisition lowers patient dosage because more photons with higher energy pass through the patient to reach the detector. However, the resulting image has less contrast. • Increasing filtration reduces the number of low-energy…

Imaging Two PET-Tracers Simultaneously Introduction: Medical imaging techniques such as Positron Emission Tomography (PET) are extensively employed in preclinical and clinical settings. Fluorine-18-fluorodeoxyglucose, or 18F-FDG, is a radiotracer that is used in PET/CT scans as part of cancer care to…