Anchali Krisanachinda

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PURPOSE To measure radiation doses for computed tomography (CT) of the head, chest, and abdomen and compare them with the diagnostic reference levels, as part of the International Atomic Energy Agency Research coordination project. MATERIALS AND METHODS The local ethics committees of all participating institutions approved the study protocol. Written(More)
OBJECTIVE The purpose of this study was to survey image quality and the entrance surface air kerma for patients in radiographic examinations and to perform comparisons with diagnostic reference levels. SUBJECTS AND METHODS In this multinational prospective study, image quality and patient radiation doses were surveyed in 12 countries in Africa, Asia, and(More)
OBJECTIVE The purposes of the present study were to determine the dose to medical staff in interventional radiology at different locations on the body measured by thermoluminescent dosimeter (TLD) and to relate the medical staff dose to patient dose measured by the dose-area product (DAP) meter. MATERIAL AND METHOD The present study covered 42 patients in(More)
This study presents an automatic method to trace the boundary of the tumour in positron emission tomography (PET) images. It has been discovered that Otsu's threshold value is biased when the within-class variances between the object and the background are significantly different. To solve the problem, a double-stage threshold search that minimizes the(More)
Background The 320detector row CT scanner with a larger z-coverage (16 cm) competently enables whole brain imaging that is need for patients who are been requested for comprehensive stroke imaging with axial volume mode which exposes the patient to a relatively high dose of radiation. Objective The purpose of the study is to determine the radiation dose on(More)
This policy statement, which is the fifth of a series of documents being prepared by the Asia-Oceania Federation of Organizations for Medical Physics Professional Development Committee, gives guidance on how clinical medical physicists’ careers should progress from their initial training to career end. It is not intended to be prescriptive as in some AFOMP(More)
Accurate quantitation of activity provides the basis for internal dosimetry of targeted radionuclide therapies. This study investigated quantitative imaging capabilities at sites with a variety of experience and equipment and assessed levels of errors in activity quantitation in Single-Photon Emission Computed Tomography (SPECT) and planar imaging.(More)
PURPOSE To determine the eye lens dose of the Interventional Cardiology (IC) personnel using optically stimulated luminescent dosimeter (OSLD) and the prevalence and risk of radiation - associated lens opacities in Thailand. METHODS AND RESULTS 48 IC staff, with age- and sex- matches 37 unexposed controls obtained eye examines. Posterior lens change was(More)
It was the aim of this work to assess and track the workload, working conditions and professional recognition of radiation oncology medical physicists (ROMPs) in the Asia Pacific region over time. In this third survey since 2008, a structured questionnaire was mailed in 2014 to 22 senior medical physicists representing 23 countries. As in previous surveys(More)
The 64-row multidetector computed tomography angiography (64-MDCTA) provides vascular image quality of the brain similar to digital subtraction angiography (DSA), but the effective dose of CTA is lower than DSA studied in phantom. The purpose of this study is to evaluate the effective dose from 64-MDCTA and DSA. Effective dose (according to ICRP 103) from(More)