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]. A 56-year-old male with underlying light chain multiple myeloma and systemic amyloidosis presented with fever for 2 days without dyspnea or cough. 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.
{"title":"Imaging features of pulmonary involvement in a case of systemic amyloidosis: A classic case","authors":"Pattharapong Saneha, Thanarak Tongsuk, Laksika Bhuthathorn","doi":"10.46475/aseanjr.v21i3.99","DOIUrl":"https://doi.org/10.46475/aseanjr.v21i3.99","url":null,"abstract":"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]. \u0000A 56-year-old male with underlying light chain multiple myeloma and systemic amyloidosis presented with fever for 2 days without dyspnea or cough. 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.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116186579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.v21i2.93
C. Nitiwarangkul, Nitra Piyavisetpat
{"title":"Summary of discussions and brainstorming session on imaging guidelines and recommendations on Thailand’s COVID-19 situation","authors":"C. Nitiwarangkul, Nitra Piyavisetpat","doi":"10.46475/aseanjr.v21i2.93","DOIUrl":"https://doi.org/10.46475/aseanjr.v21i2.93","url":null,"abstract":"","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123347596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.2020.06
A. Omojola, Funmilayo Ruth Omojola, M. Akpochafor, S. Adeneye
Objective: The aims of this study were to estimate the instantaneous dose rate(IDR) and annual dose rate (ADR) to radiation staff and the general public withinthe controlled and supervised areas, respectively, to determine the shieldingdesign goals (P) of the 2 CT facilities and to determine the average annual dose(AD) to radiographer/operator in the control console during CT scans. Materials and Methods: The equipment used in this study consisted of twonewly installed General Electric (GE) Revolution ACTs CT machines. Technicalparameters used were a thoracic/dorsal spine scan, which was rarely done in both facilities. A calibrated Inspector USB (S.E. International, Inc.) survey meter was positioned < 50 cm from each barrier at various points to determine the average shielded air kerma Results: The average background radiation in the 2 facilities was 0.11 ?Sv/hr. The average ADR to the controlled and supervised areas in CT1 was 0.563±0.25 and 0.369±0.11 mSv/yr, respectively. Also, the average ADR to the controlled and supervised areas in CT2 were 0.410±0.28 and 0.354±0.04 mSv/yr, respectively. The average shielding design goal to the controlled and supervised areas for CT1 was 0.00898±0.0041 and 0.0059±0.0028 mSv/Week, respectively. Similarly, the average shielding design goal for the controlled and supervised areas for CT2 was 0.0066±0.0044 and 0.0057±0.0019 mSv/Week respectively. The estimated average AD to the operator in CT1 and CT2 was 2.5 and 1.3 ?Sv, respectively. Conclusion: The average ADR and shielding design goals in the controlled and supervised areas from both CTs were within acceptable limits for radiation staff and the public.
{"title":"Shielding assessment in two computed tomography facilities in South-South Nigeria: How safe are the personnel and general public from ionizing radiation?","authors":"A. Omojola, Funmilayo Ruth Omojola, M. Akpochafor, S. Adeneye","doi":"10.46475/aseanjr.2020.06","DOIUrl":"https://doi.org/10.46475/aseanjr.2020.06","url":null,"abstract":"Objective: The aims of this study were to estimate the instantaneous dose rate(IDR) and annual dose rate (ADR) to radiation staff and the general public withinthe controlled and supervised areas, respectively, to determine the shieldingdesign goals (P) of the 2 CT facilities and to determine the average annual dose(AD) to radiographer/operator in the control console during CT scans.\u0000Materials and Methods: The equipment used in this study consisted of twonewly installed General Electric (GE) Revolution ACTs CT machines. Technicalparameters used were a thoracic/dorsal spine scan, which was rarely done in both facilities. A calibrated Inspector USB (S.E. International, Inc.) survey meter was positioned < 50 cm from each barrier at various points to determine the average shielded air kerma\u0000Results: The average background radiation in the 2 facilities was 0.11 ?Sv/hr. The average ADR to the controlled and supervised areas in CT1 was 0.563±0.25 and 0.369±0.11 mSv/yr, respectively. Also, the average ADR to the controlled and supervised areas in CT2 were 0.410±0.28 and 0.354±0.04 mSv/yr, respectively. The average shielding design goal to the controlled and supervised areas for CT1 was 0.00898±0.0041 and 0.0059±0.0028 mSv/Week, respectively. Similarly, the average shielding design goal for the controlled and supervised areas for CT2 was 0.0066±0.0044 and 0.0057±0.0019 mSv/Week respectively. The estimated average AD to the operator in CT1 and CT2 was 2.5 and 1.3 ?Sv, respectively.\u0000Conclusion: The average ADR and shielding design goals in the controlled and supervised areas from both CTs were within acceptable limits for radiation staff and the public.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132638525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.2020.07
P. Apisarnthanarak, Chosita Buranont, C. Boonma, Sureerat Janpanich, Tarntip Suwatananonthakij, Atchariya Klinhom, K. Muangsomboon, Wanwarang Teerasamit, Voraparee Suvannnarerg, P. Saiviroonporn
OBJECTIVE: To compare radiation dose and image quality between standard dose abdominal CT currently performed at our hospital and new low dose abdominal CT using various percentages (0%, 10%, 20%, and 30%) of Adaptive Statistical Iterative Reconstruction (ASiR). MATERIALS AND METHODS: We prospectively performed low dose abdominal CT (30% reduction of standard tube current) in 119 participants. The low dose CT images were post processed with four parameters (0%, 10%, 20% and 30%) of ASiR. The volume CT dose index (CTDIvol) of standard and low dose CT were compared. Four experienced abdominal radiologists independently assessed the quality of low dose CT with 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 prior standard dose CT as a reference of excellent image quality (5). Each reader selected the preference ASiR parameter for each participant. The image noise of the liver and the aorta in all 5 (1 prior standard dose and 4 current low dose) image sets was measured. RESULTS: The mean CTDIvol of low dose CT was significantly lower than of standard dose CT (7.17 ± 0.08 vs 12.02 ±1.61 mGy, p<0.001). The mean satisfaction scores for low dose CT with 0%, 10%, 20% and 30% ASiR were 3.95, 3.99, 3.91 and 3.87, 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 standard dose CT and low dose CT with 0%, 10%, 20%, and 30% ASiR was 29.07, 36.97, 33.92, 31.49, and 29.11, respectively, while the mean image noise of the liver was 24.60, 30.21, 28.33, 26.25, and 24.32, respectively. CONCLUSION: Low dose CT with 30% reduction of standard mA had acceptable image quality with significantly reduced radiation dose. The increment of ASiR was helpful in reducing image noise.
{"title":"Abdominal CT radiation dose optimization at Siriraj Hospital","authors":"P. Apisarnthanarak, Chosita Buranont, C. Boonma, Sureerat Janpanich, Tarntip Suwatananonthakij, Atchariya Klinhom, K. Muangsomboon, Wanwarang Teerasamit, Voraparee Suvannnarerg, P. Saiviroonporn","doi":"10.46475/aseanjr.2020.07","DOIUrl":"https://doi.org/10.46475/aseanjr.2020.07","url":null,"abstract":"OBJECTIVE: To compare radiation dose and image quality between standard dose abdominal CT currently performed at our hospital and new low dose abdominal CT using various percentages (0%, 10%, 20%, and 30%) of Adaptive Statistical Iterative Reconstruction (ASiR).\u0000MATERIALS AND METHODS: We prospectively performed low dose abdominal CT (30% reduction of standard tube current) in 119 participants. The low dose CT images were post processed with four parameters (0%, 10%, 20% and 30%) of ASiR. The volume CT dose index (CTDIvol) of standard and low dose CT were compared. Four experienced abdominal radiologists independently assessed the quality of low dose CT with 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 prior standard dose CT as a reference of excellent image quality (5). Each reader selected the preference ASiR parameter for each participant. The image noise of the liver and the aorta in all 5 (1 prior standard dose and 4 current low dose) image sets was measured. \u0000RESULTS: The mean CTDIvol of low dose CT was significantly lower than of standard dose CT (7.17 ± 0.08 vs 12.02 ±1.61 mGy, p<0.001). The mean satisfaction scores for low dose CT with 0%, 10%, 20% and 30% ASiR were 3.95, 3.99, 3.91 and 3.87, 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 standard dose CT and low dose CT with 0%, 10%, 20%, and 30% ASiR was 29.07, 36.97, 33.92, 31.49, and 29.11, respectively, while the mean image noise of the liver was 24.60, 30.21, 28.33, 26.25, and 24.32, respectively.\u0000CONCLUSION: Low dose CT with 30% reduction of standard mA had acceptable image quality with significantly reduced radiation dose. The increment of ASiR was helpful in reducing image noise. ","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"744 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122003536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.2020.12
Anitha Mandava, V. Koppula, Rohit Yalamanchili, D. Yadav, J. Rakesh
High resolution ultrasound with color Doppler is the first-line imaging investigation in the evaluation of acute scrotum. It plays a crucial role in distinguishing urological emergencies necessitating immediate surgical exploration from those that can be managed conservatively. Acute scrotal pathologies can involve the scrotal sac or its contents like testis, epididymis and testicular appendages and could range from benign, self-limiting conditions to emergencies. In this pictorial essay, we briefly review the ultrasonographic technique, scrotal anatomy and characteristic imaging features of various pathologies presented as acute scrotum.
{"title":"Ultrasound imaging of acute scrotum: Pictorial review with etiological correlation","authors":"Anitha Mandava, V. Koppula, Rohit Yalamanchili, D. Yadav, J. Rakesh","doi":"10.46475/aseanjr.2020.12","DOIUrl":"https://doi.org/10.46475/aseanjr.2020.12","url":null,"abstract":"High resolution ultrasound with color Doppler is the first-line imaging investigation in the evaluation of acute scrotum. It plays a crucial role in distinguishing urological emergencies necessitating immediate surgical exploration from those that can be managed conservatively. Acute scrotal pathologies can involve the scrotal sac or its contents like testis, epididymis and testicular appendages and could range from benign, self-limiting conditions to emergencies. In this pictorial essay, we briefly review the ultrasonographic technique, scrotal anatomy and characteristic imaging features of various pathologies presented as acute scrotum.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126220752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.2020.10
Panyaros Kongpanya, Parichut Vongthawatchai, Priyanut Atiburanakul, Nayot Panitanum, P. Suttha
Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), continues to spread rapidly around the world. We reported the first two cases of COVID-19 pneumonia who had the chest computed tomography (CT) performed at the Bamrasnaradura Infectious Disease Institute (BIDI). The chest CT findings in the two patients with COVID-19 pneumonia showed bilateral lung involvement, multifocal involvement, peripheral distribution, ground glass opacity (GGO), consolidation and GGO with interlobular septal thickening (“crazy-paving” pattern). The chest CT findings in these patients are nonspecific and overlapped with other diseases.
{"title":"COVID-19 pneumonia: The first two chest CTs in the Bamrasnaradura Infectious Disease Institute","authors":"Panyaros Kongpanya, Parichut Vongthawatchai, Priyanut Atiburanakul, Nayot Panitanum, P. Suttha","doi":"10.46475/aseanjr.2020.10","DOIUrl":"https://doi.org/10.46475/aseanjr.2020.10","url":null,"abstract":"Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), continues to spread rapidly around the world. We reported the first two cases of COVID-19 pneumonia who had the chest computed tomography (CT) performed at the Bamrasnaradura Infectious Disease Institute (BIDI). The chest CT findings in the two patients with COVID-19 pneumonia showed bilateral lung involvement, multifocal involvement, peripheral distribution, ground glass opacity (GGO), consolidation and GGO\u0000with interlobular septal thickening (“crazy-paving” pattern). The chest CT findings in these patients are nonspecific and overlapped with other diseases.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126669623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.v21i2.92
W. Tanomkiat
{"title":"From The Editor","authors":"W. Tanomkiat","doi":"10.46475/aseanjr.v21i2.92","DOIUrl":"https://doi.org/10.46475/aseanjr.v21i2.92","url":null,"abstract":"","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125562425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.2020.09
A. A. Salam, Ben J Pearch, L. Sorger
Atraumatic splenic rupture is uncommon but it is a life threatening condition because of hypovolemic shock. Early recognition and treatment are the keys to asuccessful outcome. We report a case of atraumatic splenic rupture secondary to chronic pancreatitis treated successfully by splenic artery embolization.
{"title":"Atraumatic splenic rupture in chronic pancreatitis with successful embolization","authors":"A. A. Salam, Ben J Pearch, L. Sorger","doi":"10.46475/aseanjr.2020.09","DOIUrl":"https://doi.org/10.46475/aseanjr.2020.09","url":null,"abstract":"Atraumatic splenic rupture is uncommon but it is a life threatening condition because of hypovolemic shock. Early recognition and treatment are the keys to asuccessful outcome. We report a case of atraumatic splenic rupture secondary to chronic pancreatitis treated successfully by splenic artery embolization.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130555272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.2020.14
W. Tanomkiat
{"title":"From The Editor","authors":"W. Tanomkiat","doi":"10.46475/aseanjr.2020.14","DOIUrl":"https://doi.org/10.46475/aseanjr.2020.14","url":null,"abstract":"","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115160591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-30DOI: 10.46475/aseanjr.2020.11
K. Khanungwanitkul, T. Pattarapuntakul, N. Wisedopas
{"title":"Distal common bile duct adenoma","authors":"K. Khanungwanitkul, T. Pattarapuntakul, N. Wisedopas","doi":"10.46475/aseanjr.2020.11","DOIUrl":"https://doi.org/10.46475/aseanjr.2020.11","url":null,"abstract":"","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116077573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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