Browsing Department of Nuclear Science by Subject "Computed Tomography"

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Computed Tomography Dose Reference Levels for head, chest and abdomen regions: A nationwide survey

Amalaraj, T; Satharasinghe, DM; Pallewatte, AS; Jeyasugiththan, Jeyasingam (The 21st Asia-Oceania Congress of Medical Physics (AOCMP -2021), 2021)

Introduction: The computed tomography (CT) is identified as the highest contributor of the population radiation dose among medical radiation examinations. Therefore, routine monitoring of the delivered radiation dose is ...
Establishment of Institutional Diagnostic Reference Levels (DRLs) for Computed Tomography in National Hospital of Sri Lanka

Hettiarachchi, K. S.; Jeyasugiththan, J.; Pallewatte, A. S. (University of Colombo, 2022)

The institutional DRLs for the National Hospital of Sri Lanka were established by considering the most frequent computed tomography (CT) examination performed by three CT units in the Department of Radiology. CT dose volume ...
Estimation of Effective Radiation Dose in 16 Slice Computed Tomography Neck Examination

Gunawardhana, Harshana; Mallikaarachchi, Asanka; Viswakula, Sameera; Jeyasugiththan, Jeyasingam (Faculty of Science, University of Colombo, Sri Lanka, 2021)

Computed Tomography (CT) is the most essential imaging technique and widely used in various diagnostic radiological and interventional procedures in Sri Lanka. Because of the increased demand for CT imaging procedures, ...
Evaluating the Impact Exposure Parameters Have on Automatic Tube Current Modulation in a CT Scanner

Hishaam, U.; Jeyasugiththan, J.; Satharasinghe, D. M.; Senanayake, G.; Kumarihami, A. M. C.; Ranaweera, G.; Costa, M.; Pallewatte, A. S.; Peterson, S. (Asia‑Oceania Federation of Organizations (AFOMP) Congress, 2022)

Background or Introduction: ATCM reduces dose by adapting tube current to maintain a specified target image quality throughout CT scans and across patients of varying sizes. Scanners modulate current differently: angularly ...
Optimizing Image Noise as a means to improve Computed Tomography ATCM in Sri Lanka

Hishaam, H; Jeyasugiththan, Jeyasingam; Pallewatte, AS; Peterson, S (The 21st Asia-Oceania Congress of Medical Physics (AOCMP -2021), 2021)

The use of automatic tube current modulation (ATCM) during CT scans has become widely popular over the past few years. This method significantly reduces patient dose by adapting the tube current during a CT scan to produce ...

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Browsing Department of Nuclear Science by Subject "Computed Tomography"

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