Publications by authors named "Seyyed Rasoul Zakavi"
In single photon emission computed tomography (SPECT), the collimator is a crucial element of the imaging chain and controls the noise resolution tradeoff of the collected data. The current study is an evaluation of the effects of different thicknesses of a low-energy high-resolution (LEHR) collimator on tomographic spatial resolution in SPECT. In the present study, the SIMIND Monte Carlo program was used to simulate a SPECT equipped with an LEHR collimator.
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- Hepatobiliary scintigraphy is commonly used to diagnose neonatal cholestasis, but it struggles to distinguish between biliary atresia and neonatal hepatitis due to low specificity.
- A study involving 20 infants showed that 99mTc MIBI, a specific imaging agent, displayed bowel activity in all patients, including those with biliary atresia.
- The findings suggest that while 99mTc MIBI shows bowel activity, it has limited effectiveness for differentiating between the two conditions in neonatal cholestasis.