Image Acquisition and Attenuation Map Estimation for Multi-pinhole Clinical SPECT

Single-photon emission computed tomography (SPECT) is a well-established nuclear imaging modality for studying functional and pathological properties of the brain. Conventional general purpose SPECT systems typically offer a spatial resolution of about 10 mm with a sensitivity of 0.01-0.02%. A few dedicated brain SPECT scanners have been...

Engineering Critical Assessment for girth welds in reeled pipeline: Development of a probabilistic methodology

Pipe laying projects are getting more challenging due to increasing operational depth of pipeline. The increasing depth requires more of the strength and load bearing capability of the pipeline and its girth welds. The assessment method used for checking the integrity of flaws in girth welds is called Engineering Critical Assessment (ECA) and is...