The ASEAN Journal of Radiology <p><strong>General Information</strong><br />The ASEAN Journal of Radiology (ASEAN-JR), an official journal of ASEAN association of Radiology (AAR), publishes articles pertaining to the clinical imaging, therapy, and basic science of the radiology, radiation therapy, medical physics and related educational, socioeconomic and medicolegal issue in ASEAN regions and worldwide. The content of the ASEAN-JR is determined by the Editors.<br /><br />ISSN: 0859-144X (Print)<br />ISSN: 2672-9393 (Online)</p> en-US <p><span class="fontstyle0"><strong>Disclosure Forms and Copyright Agreements</strong><br></span><span class="fontstyle2">All authors listed on the manuscript must complete both the electronic copyright agreement. (in the case of acceptance)</span></p> (Wiwatana Tanomkiat) (Wiwatana Tanomkiat) Thu, 31 Dec 2020 00:00:00 +0700 OJS 60 Thailand’s experience on radiation safety and quality practice in diagnostic radiology Napapong Pongnapang, Ph.D. Copyright (c) 2020 The ASEAN Journal of Radiology Thu, 31 Dec 2020 00:00:00 +0700 Imaging appearance of the involved mesenteric node in patient with systemic amyloidosis: A case report <div class="page" title="Page 27"> <div class="layoutArea"> <div class="column"> <p>Amyloidosis is a rare disease characterised by abnormal amyloid protein deposition within the affected tissue. About 37% of the patients were presented with systemic amyloidosis, of which hilar, mediastinal, and para-aortic lymph nodes were involved. Deposition of amyloid protein in the mesenteric lymph node is rarely documented, but when reported, it is seen in isolated or secondary amyloidosis. Despite an indistinguishable imaging appearance of the amyloid- deposit mesenteric node from malignancy, infection, and an inflammation process, the radiologists should be aware of variable imaging findings to be suspicious of amyloidosis. We reported a rare case of systemic amyloidosis with mesenteric node involvement, manifested as node enlargement.</p> </div> </div> </div> Sunpob Cheewadhanaraks, M.D., Thitithep Suriyamonthon, M.D., Paramee Noisri, M.D, Pimporn Puttawibul, M.D., Tanawat Pattarapuntakul, M.D., Naruemon Wisedopas, M.D., Pakorn Arunsawat, M.D. , Khanin Khanungwanitkul, M.D. Copyright (c) 2020 The ASEAN Journal of Radiology Thu, 31 Dec 2020 00:00:00 +0700 The health of one nation in human web Wiwatana Tanomkiat, M.D. Copyright (c) 2020 The ASEAN Journal of Radiology Thu, 31 Dec 2020 00:00:00 +0700 Imaging features of pulmonary involvement in a case of systemic amyloidosis: A classic case <p>Amyloidosis is a disease caused by pathologic extracellular deposition of abnormal insoluble proteins throughout the body [1]. Pulmonary amyloidosis is a form of amyloid deposition confined in the lung parenchyma and may cause airway obstruction, dysphagia, and chronic pleural effusions, often with nonspecific chest imaging findings [1,2].</p> <p>A 56-year-old male with underlying light chain multiple myeloma and systemic amyloidosis presented with fever for 2 days without dyspnea or cough.&nbsp; Further chest imaging revealed nonspecific findings including consolidations, ground-glass opacities, interlobular septal thickening in both upper lobes, and bilateral pleural effusions; a diagnosis of pneumonia with pulmonary edema was made. After the patient failed to respond to treatment, bronchoscopy with tissue biopsy was performed for unresolving pneumonia. Histopathological results were consistent with pulmonary amyloidosis.</p> Pattharapong Saneha, M.D., Thanarak Tongsuk, M.D., Laksika Bhuthathorn, M.D. Copyright (c) 2020 The ASEAN Journal of Radiology Thu, 31 Dec 2020 00:00:00 +0700 Abdominal CT radiation dose reduction at Siriraj Hospital (Phase II) <div class="page" title="Page 7"> <div class="layoutArea"> <div class="column"> <p><strong>Objective:</strong> To compare radiation dose, radiologists’ satisfaction, and image noise between the standard dose abdominal CT currently performed at our hospital and the new automatic tube current modulation (ATCM) low dose abdominal CT, using various parameters (0%, 10%, 20%, and 30%) of the Adaptive Statistical Iterative Reconstruction (ASiR).</p> <p><strong>Materials and Methods:</strong> We prospectively performed the ATCM low dose abdominal CT in 111 participants who had prior standard dose CT for comparison. The ATCM low dose CT images were post processed with 4 parameters (0%, 10%, 20% and 30%) of ASiR on a CT workstation. The volume CT dose index (CTDIvol) of the ATCM low dose and the standard dose CT were compared. Four experienced abdominal radiologists independently assessed the quality of the ATCM low dose CT with the aforementioned ASiR parameters using a 5-point-scale satisfaction score (1 = unacceptable, 2 = poor, 3 = average, 4 = good, and 5 = excellent image quality) by using the prior standard dose CT as a reference of an excellent image quality (5). Each reader selected the preferred ASiR parameter for each participant. The image noise of the liver and the aorta in all 5 techniques (1 prior standard dose and 4 current ATCM low dose techniques) was measured. The correlation between the image quality vs the participants’ body mass index (BMI) and waist circumferences were analyzed.</p> <div class="page" title="Page 8"> <div class="layoutArea"> <div class="column"> <p><strong>Results:</strong> The mean CTDIvol of the ATCM low dose CT was significantly lower than of the standard dose CT (7.29 ± 0.20 vs 11.28 ± 0.23 mGy, p&lt;0.001). The mean satisfaction score for the ATCM low dose CT with 0%, 10%, 20% and 30% ASiR were 4.14, 4.16, 4.17, and 4.26, respectively with the ranges of 3 to 5 in all techniques. The preferred ASiR parameters of each participant randomly selected by each reader were varied, depending on the readers’ opinions. The mean image noise of the aorta on the standard dose CT and the ATCM low dose CT with 0%, 10%, 20%, and 30% ASiR was 30.69, 36.60, 34.05, 31.43, and 29.09, respectively, while the mean image noise of the liver was 24.96, 29.90, 27.86, 25.66, and 23.68, respectively. There was a correlation between the image quality (satisfaction score and image noise) vs the participants’ BMI and waist circumferences.</p> <p><strong>Conclusion:</strong> The ATCM low dose CT received acceptable radiologists’ satisfaction with significant radiation dose reduction. The increment of ASiR was helpful in reducing the image noise and had a tendency to increase the radiologists’ satisfaction score.</p> </div> </div> </div> </div> </div> </div> Piyaporn Apisarnthanarak, M.D., Suchanya Hongpinyo, M.D., Krittya Saysivanon, B.Sc., Chulaluck Boonma, B.Sc., Sureerat Janpanich, RN., Preeyanuch Ketkan, RN., Kobkun Muangsomboon, M.D., Wanwarang Teerasamit, M.D., Sopa Pongpornsup, M.D., Pairash Saiviroonporn, Ph.D. Copyright (c) 2020 The ASEAN Journal of Radiology Thu, 31 Dec 2020 00:00:00 +0700