Pub Date : 2023-09-01DOI: 10.46475/aseanjr.v24i2.206
Yukihiro Hama
Background: A bolus injection of prostaglandin-E1 (PGE1) into the superior mesenteric artery (SMA) immediately before SMA-portography can effectively visualize the portal vein. Objective: The purpose of this study was to obtain basic pharmacoangiographical data and evaluate the hemodynamic changes following intra-arterial bolus injection of PGE1. Materials and Methods: Forty-four consecutive patients undergoing transcatheter arterial chemoembolization (TACE) for liver cancer were retrospectively evaluated. SMA-portography was performed prior to TACE. An intra-arterial bolus injection of PGE1 was performed immediately before SMA-portography. Both SMA pressure and left brachial artery pressure were measured before, 1, 2, 3, 4, and 5 minutes after SMA-portography. Results: Systolic pressure in the SMA decreased significantly 3 minutes after SMA-portography and remained low for 5 minutes. The maximum reduction rates in systolic and diastolic blood pressure in the SMA were 4.8% (4 minutes after SMA-portography) and 6.8% (5 minutes after SMA-portography), respectively. The left brachial artery pressure decreased similarly to the SMA. There were no significant changes in pulse pressure before or after PGE1 injection in either the SMA or brachial arteries. Conclusion: A bolus injection of PGE1 into the SMA was shown to decrease blood pressure in the SMA and brachial arteries, but the pulse pressure remained constant.
{"title":"Acute changes of superior mesenteric artery pressure after intraarterial bolus injection of prostaglandin-E1.","authors":"Yukihiro Hama","doi":"10.46475/aseanjr.v24i2.206","DOIUrl":"https://doi.org/10.46475/aseanjr.v24i2.206","url":null,"abstract":"Background: A bolus injection of prostaglandin-E1 (PGE1) into the superior mesenteric artery (SMA) immediately before SMA-portography can effectively visualize the portal vein. Objective: The purpose of this study was to obtain basic pharmacoangiographical data and evaluate the hemodynamic changes following intra-arterial bolus injection of PGE1. Materials and Methods: Forty-four consecutive patients undergoing transcatheter arterial chemoembolization (TACE) for liver cancer were retrospectively evaluated. SMA-portography was performed prior to TACE. An intra-arterial bolus injection of PGE1 was performed immediately before SMA-portography. Both SMA pressure and left brachial artery pressure were measured before, 1, 2, 3, 4, and 5 minutes after SMA-portography. Results: Systolic pressure in the SMA decreased significantly 3 minutes after SMA-portography and remained low for 5 minutes. The maximum reduction rates in systolic and diastolic blood pressure in the SMA were 4.8% (4 minutes after SMA-portography) and 6.8% (5 minutes after SMA-portography), respectively. The left brachial artery pressure decreased similarly to the SMA. There were no significant changes in pulse pressure before or after PGE1 injection in either the SMA or brachial arteries. Conclusion: A bolus injection of PGE1 into the SMA was shown to decrease blood pressure in the SMA and brachial arteries, but the pulse pressure remained constant.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134964089","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 : 2023-08-31DOI: 10.46475/aseanjr.v24i2.874
Wiwatana Tanomkiat
In the aftermath of the Songkran celebrations in Thailand, which concluded on 15 April 2023, the number of Covid-19 inpatients and related deaths has seen a significant increase of 150% in just one week [1,2]. Similarly, COVID infections in Japan increased threefold after the government had eased restrictions on 8 May. However, in June, new COVID-19 infections in Thailand and other countries steadily fell, with fewer fatalities [3]. Death mainly occurs in the 607 group which includes patients over the age of 60 and those living with at least one of the seven chronic diseases. A key risk factor is either not having been vaccinated at all, not having received a booster jab or having received a booster for over three months. Having attended Japan Radiology Congress (JRC) in Yokohama, Japan in April, Eurasia Radiological Forum (EARF) in Astana, Kazakhstan in June, Malaysian Congress of Radiology (MCoR) in Kuala Lumpur, Malaysia in July, and the Vietnamese Society of Radiology and Nuclear Medicine (VSRNM) in Da Nang, Vietnam in August, I perceived the return to the pre-COVID normal situation in those cities and the conferences in which there was no social distancing in both academic and social events. In addition, attendants were not required to wear face masks. People gathered to talk, drink, dine and sing as they did before the pandemic. Received 28 August 2023 ; accepted 24 August 2023 doi:10.46475/aseanjr.v24i2.874 Tanomkiat W. ASEAN J Radiol 2023; 24(2) : 77-79
{"title":"Returning to the pre-pandemic situation but still in the years of infections","authors":"Wiwatana Tanomkiat","doi":"10.46475/aseanjr.v24i2.874","DOIUrl":"https://doi.org/10.46475/aseanjr.v24i2.874","url":null,"abstract":"In the aftermath of the Songkran celebrations in Thailand, which concluded on 15 April 2023, the number of Covid-19 inpatients and related deaths has seen a significant increase of 150% in just one week [1,2]. Similarly, COVID infections in Japan increased threefold after the government had eased restrictions on 8 May. However, in June, new COVID-19 infections in Thailand and other countries steadily fell, with fewer fatalities [3]. Death mainly occurs in the 607 group which includes patients over the age of 60 and those living with at least one of the seven chronic diseases. A key risk factor is either not having been vaccinated at all, not having received a booster jab or having received a booster for over three months. Having attended Japan Radiology Congress (JRC) in Yokohama, Japan in April, Eurasia Radiological Forum (EARF) in Astana, Kazakhstan in June, Malaysian Congress of Radiology (MCoR) in Kuala Lumpur, Malaysia in July, and the Vietnamese Society of Radiology and Nuclear Medicine (VSRNM) in Da Nang, Vietnam in August, I perceived the return to the pre-COVID normal situation in those cities and the conferences in which there was no social distancing in both academic and social events. In addition, attendants were not required to wear face masks. People gathered to talk, drink, dine and sing as they did before the pandemic. Received 28 August 2023 ; accepted 24 August 2023 doi:10.46475/aseanjr.v24i2.874 Tanomkiat W. ASEAN J Radiol 2023; 24(2) : 77-79","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136034393","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 : 2023-08-31DOI: 10.46475/asean-jr.v24i2.778
Somchanin Pipatpajong, Rachata Tangkulboriboon
Objective: To determine preoperative factors associated with underestimation of invasive breast cancer, where stereotactic vacuum-assisted biopsy (VAB) diagnosed as ductal carcinoma in situ (DCIS). Materials and Methods: Data from 95 patients diagnosed with DCIS by stereotactic VAB, including their clinical, radiological, and pathological findings between November 2010 and May 2021, were analyzed retrospectively. The clinical, radiological, and pathological features were analyzed. Results: The underestimation rate was 30.5 %. Three preoperative features were significantly associated with the underestimation of invasive breast cancer in multivariable analysis, including palpability (OR, 11.51; 95% CI: 1.817-72.897; P = 0.009), BI-RADS category (OR, 3.705; 95% CI: 1.214-11.303; P = 0.021), and visibility of a mammographically detected lesion at ultrasonography (OR, 7.115; 95% CI: 1.977-25.611; P = 0.003). The calcification morphology was statistically significant in an univariable analysis but not in a multivariable analysis. Conclusion: Preoperative variables significantly associated with underdiagnosis of invasive breast cancer, including palpability, BI-RADS category, and visibility of mammographically detected lesions at ultrasonography, could aid in assessing the risk of developing invasive breast cancer and conducting treatment selection.
{"title":"preoperative factors associated with underestimation of invasive breast cancer in stereotactic vacuum-assisted biopsy-diagnosed DCIS patients","authors":"Somchanin Pipatpajong, Rachata Tangkulboriboon","doi":"10.46475/asean-jr.v24i2.778","DOIUrl":"https://doi.org/10.46475/asean-jr.v24i2.778","url":null,"abstract":"Objective: To determine preoperative factors associated with underestimation of invasive breast cancer, where stereotactic vacuum-assisted biopsy (VAB) diagnosed as ductal carcinoma in situ (DCIS). Materials and Methods: Data from 95 patients diagnosed with DCIS by stereotactic VAB, including their clinical, radiological, and pathological findings between November 2010 and May 2021, were analyzed retrospectively. The clinical, radiological, and pathological features were analyzed. Results: The underestimation rate was 30.5 %. Three preoperative features were significantly associated with the underestimation of invasive breast cancer in multivariable analysis, including palpability (OR, 11.51; 95% CI: 1.817-72.897; P = 0.009), BI-RADS category (OR, 3.705; 95% CI: 1.214-11.303; P = 0.021), and visibility of a mammographically detected lesion at ultrasonography (OR, 7.115; 95% CI: 1.977-25.611; P = 0.003). The calcification morphology was statistically significant in an univariable analysis but not in a multivariable analysis. Conclusion: Preoperative variables significantly associated with underdiagnosis of invasive breast cancer, including palpability, BI-RADS category, and visibility of mammographically detected lesions at ultrasonography, could aid in assessing the risk of developing invasive breast cancer and conducting treatment selection.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139347370","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 : 2023-08-31DOI: 10.46475/aseanjr.v24i2.157
Pushkar Mendiratta, Samaresh Sahu, Aneesh Mohimen
Superficial siderosis is a rare abnormality caused by deposition of hemosiderin in the subpial or subarachnoid spaces of the brain, cranial nerves, and spinal cord. It results from chronic repetitive bleeding in the subpial/subarachnoid space. Magnetic resonance imaging of the brain is the diagnostic modality of choice. We describe a rare case of an 18-month-old male, a known case of congenital Factor V deficiency, who presented with recurrent vomiting, irritability and right-sided hemiparesis. On Magnetic resonance imaging, there was hypointense coating of the surface of the brainstem and cerebellum with ventricular dilatation. This case emphasizes the fact that superficial siderosis should be specifically looked for when evaluating a patient with a history of previous intracranial bleed followed by a thorough search for the source of the hemorrhage.
{"title":"Superficial siderosis presenting as hemiparesis in a paediatric patient with congenital Factor V deficiency – A case report.","authors":"Pushkar Mendiratta, Samaresh Sahu, Aneesh Mohimen","doi":"10.46475/aseanjr.v24i2.157","DOIUrl":"https://doi.org/10.46475/aseanjr.v24i2.157","url":null,"abstract":"Superficial siderosis is a rare abnormality caused by deposition of hemosiderin in the subpial or subarachnoid spaces of the brain, cranial nerves, and spinal cord. It results from chronic repetitive bleeding in the subpial/subarachnoid space. Magnetic resonance imaging of the brain is the diagnostic modality of choice. We describe a rare case of an 18-month-old male, a known case of congenital Factor V deficiency, who presented with recurrent vomiting, irritability and right-sided hemiparesis. On Magnetic resonance imaging, there was hypointense coating of the surface of the brainstem and cerebellum with ventricular dilatation. This case emphasizes the fact that superficial siderosis should be specifically looked for when evaluating a patient with a history of previous intracranial bleed followed by a thorough search for the source of the hemorrhage.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135989454","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}
Background: The accuracy and precision of patient setup are important in radiotherapy. The thermoplastic mask is used to immobilize head and neck cancer patient. However, the mask is reused for low-income patients. Therefore, the setup error should be evaluated to approve that these patients remain in the exact position during treatment. Objective: To investigate setup errors with the use of thermoplastic masks in head and neck cancer patients and to compare setup errors of new and reused thermoplastic masks. Materials and Methods: Eighty patients who underwent volumetric modulated arc radiotherapy (VMAT) for head and neck cancer lesions were retrospectively evaluated. The setup error, population systematic error, and population random error were calculated. Subsequently, setup errors in patients using the new and reused thermoplastic masks were compared. Results: The population systematic error in the vertical, longitudinal, and lateral directions for new masks was 2.02, 2.27, and 2.13 mm, respectively, and that for reused masks was 2.37, 1.96, and 2.33 mm, respectively. The population random error in the vertical, longitudinal, and lateral direction for new masks was 1.46, 1.54, and 1.57 mm, respectively, and that for reused masks was 1.65, 1.63, and 1.87 mm, respectively. The results showed no statistically significant difference supported by p value > 0.05 in the setup error between using the new and reused thermoplastic masks in all directions. Conclusion: For head and neck radiotherapy, the population setup errors were < 3 mm in all directions. Moreover, thermoplastic masks can be reused in patients with head and neck cancer.
{"title":"Comparative study of setup errors between new and reused thermoplastic masks in irradiated head and neck cancer patients","authors":"Nipha Chumsuwan, Lalita Romkedpikun, Janyaporn Thongthae, Tanapan Yousuk","doi":"10.46475/asean-jr.v24i2.808","DOIUrl":"https://doi.org/10.46475/asean-jr.v24i2.808","url":null,"abstract":"Background: The accuracy and precision of patient setup are important in radiotherapy. The thermoplastic mask is used to immobilize head and neck cancer patient. However, the mask is reused for low-income patients. Therefore, the setup error should be evaluated to approve that these patients remain in the exact position during treatment. Objective: To investigate setup errors with the use of thermoplastic masks in head and neck cancer patients and to compare setup errors of new and reused thermoplastic masks. Materials and Methods: Eighty patients who underwent volumetric modulated arc radiotherapy (VMAT) for head and neck cancer lesions were retrospectively evaluated. The setup error, population systematic error, and population random error were calculated. Subsequently, setup errors in patients using the new and reused thermoplastic masks were compared. Results: The population systematic error in the vertical, longitudinal, and lateral directions for new masks was 2.02, 2.27, and 2.13 mm, respectively, and that for reused masks was 2.37, 1.96, and 2.33 mm, respectively. The population random error in the vertical, longitudinal, and lateral direction for new masks was 1.46, 1.54, and 1.57 mm, respectively, and that for reused masks was 1.65, 1.63, and 1.87 mm, respectively. The results showed no statistically significant difference supported by p value > 0.05 in the setup error between using the new and reused thermoplastic masks in all directions. Conclusion: For head and neck radiotherapy, the population setup errors were < 3 mm in all directions. Moreover, thermoplastic masks can be reused in patients with head and neck cancer.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139347473","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 : 2023-08-31DOI: 10.46475/asean-jr.v24i2.191
Araya Boonyaleepan, Tarit Taerakul
Background: Patients with thyroid cancer receive a high-dose thyroid hormone therapy after total thyroidectomy for suppression of thyroid stimulating hormone (TSH); this may affect bone mineral density (BMD). Identifying the common factors that affect BMD (including the duration of a high dose of thyroid hormone treatment) may, therefore, aid the delivery of appropriate and comprehensive care in such cases. Objective: To identify the factors related to BMD in female patients with thyroid cancer. Materials and Methods: This cross-sectional study evaluated data pertaining to the BMD and demographic characteristics of female patients with thyroid cancer. The patients were aged at least 40 years and received a high-dose thyroid hormone replacement therapy after total thyroidectomy at the Rajavithi Hospital between January 2004 and December 2019. The relationships between BMD and associated factors were analyzed using Pearson’s correlation and multiple linear regression. A p-value of less than 0.05 was considered statistically significant. Results: A total of 100 female patients with a mean age of 55.37 ± 11.36 (40-82) years and mean body mass index (BMI) of 24.8 ± 4.96 (15-40) were included; 60 and 56 of them were postmenopausal and coffee drinkers, respectively. High-dose thyroid hormone replacement therapy was received for a mean duration of 94.59±50.36 (3-210) months and 13 patients had a history of fractures; 60%, 30%, and 10% had normal BMD, osteopenia, and osteoporosis, respectively. The factors affecting BMD included the BMI (p-value <0.001) and postmenopausal status(p-value <0.001). Subgroup analyses showed the BMI to be the factor affecting BMD in the premenopausal group (p-value <0.001). Age, BMI, and calcium supplement intake were found to have an effect on the BMD in the postmenopausal group (p-value= 0.003, 0.002, and 0.020, respectively). The duration of high-dose thyroid hormone intake had no effect on the BMD in both the overall population (p-value= 0.558) and the subgroups based on the menopausal status (p-value = 0.437 and 0.380 in premenopausal and postmenopausal groups, respectively). Conclusion: In female patients who were treated for thyroid cancer, the factors affecting the BMD included the BMI in the premenopausal group and the age, BMI, and calcium supplementation in the postmenopausal group.
{"title":"Factors related to bone mineral density in female patients receiving TSH-suppressive doses of levothyroxine for thyroid cancer","authors":"Araya Boonyaleepan, Tarit Taerakul","doi":"10.46475/asean-jr.v24i2.191","DOIUrl":"https://doi.org/10.46475/asean-jr.v24i2.191","url":null,"abstract":"Background: Patients with thyroid cancer receive a high-dose thyroid hormone therapy after total thyroidectomy for suppression of thyroid stimulating hormone (TSH); this may affect bone mineral density (BMD). Identifying the common factors that affect BMD (including the duration of a high dose of thyroid hormone treatment) may, therefore, aid the delivery of appropriate and comprehensive care in such cases. Objective: To identify the factors related to BMD in female patients with thyroid cancer. Materials and Methods: This cross-sectional study evaluated data pertaining to the BMD and demographic characteristics of female patients with thyroid cancer. The patients were aged at least 40 years and received a high-dose thyroid hormone replacement therapy after total thyroidectomy at the Rajavithi Hospital between January 2004 and December 2019. The relationships between BMD and associated factors were analyzed using Pearson’s correlation and multiple linear regression. A p-value of less than 0.05 was considered statistically significant. Results: A total of 100 female patients with a mean age of 55.37 ± 11.36 (40-82) years and mean body mass index (BMI) of 24.8 ± 4.96 (15-40) were included; 60 and 56 of them were postmenopausal and coffee drinkers, respectively. High-dose thyroid hormone replacement therapy was received for a mean duration of 94.59±50.36 (3-210) months and 13 patients had a history of fractures; 60%, 30%, and 10% had normal BMD, osteopenia, and osteoporosis, respectively. The factors affecting BMD included the BMI (p-value <0.001) and postmenopausal status(p-value <0.001). Subgroup analyses showed the BMI to be the factor affecting BMD in the premenopausal group (p-value <0.001). Age, BMI, and calcium supplement intake were found to have an effect on the BMD in the postmenopausal group (p-value= 0.003, 0.002, and 0.020, respectively). The duration of high-dose thyroid hormone intake had no effect on the BMD in both the overall population (p-value= 0.558) and the subgroups based on the menopausal status (p-value = 0.437 and 0.380 in premenopausal and postmenopausal groups, respectively). Conclusion: In female patients who were treated for thyroid cancer, the factors affecting the BMD included the BMI in the premenopausal group and the age, BMI, and calcium supplementation in the postmenopausal group.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139347394","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 : 2023-08-31DOI: 10.46475/asean-jr.v24i2.313
M. Scolnik, L. Glozman, Noa Mandel-Shorer, Michalle Soudack Ben-Nun, A. Ilivitzki
Neuroblastoma (NB) is the most common extracranial solid tumour in children, accounting for approximately eight percent of paediatric cancer and fifteen percent of pediatric cancer deaths. Reaching a correct and timely diagnosis is extremely important, especially in aggressive NB. Prognosis and treatment are based on tumour biology and genetics, patient age and perhaps most importantly, disease stage. The current staging system relies heavily on imaging, and this pictorial essay provides a description of the radiological features of NB, from classic to atypical, and the modalities used to help confirm the diagnosis and staging of NB. Our aim is to provide radiologists with a comprehensive collection of presentations of NB, to help improve diagnostic accuracy and decrease time to diagnose.
神经母细胞瘤（NB）是儿童最常见的颅外实体瘤，约占儿童癌症的百分之八，占儿童癌症死亡人数的百分之十五。正确及时的诊断极其重要，尤其是对侵袭性 NB。预后和治疗基于肿瘤生物学和遗传学、患者年龄，也许最重要的是疾病分期。目前的分期系统在很大程度上依赖于影像学，这篇图文并茂的文章描述了从典型到非典型 NB 的放射学特征，以及用于帮助确诊和分期 NB 的方式。我们的目的是为放射科医生提供一套全面的 NB 影像资料，以帮助提高诊断准确性并缩短诊断时间。
{"title":"Pediatric imaging of neuroblastoma-From classic to atypical","authors":"M. Scolnik, L. Glozman, Noa Mandel-Shorer, Michalle Soudack Ben-Nun, A. Ilivitzki","doi":"10.46475/asean-jr.v24i2.313","DOIUrl":"https://doi.org/10.46475/asean-jr.v24i2.313","url":null,"abstract":"Neuroblastoma (NB) is the most common extracranial solid tumour in children, accounting for approximately eight percent of paediatric cancer and fifteen percent of pediatric cancer deaths. Reaching a correct and timely diagnosis is extremely important, especially in aggressive NB. Prognosis and treatment are based on tumour biology and genetics, patient age and perhaps most importantly, disease stage. The current staging system relies heavily on imaging, and this pictorial essay provides a description of the radiological features of NB, from classic to atypical, and the modalities used to help confirm the diagnosis and staging of NB. Our aim is to provide radiologists with a comprehensive collection of presentations of NB, to help improve diagnostic accuracy and decrease time to diagnose.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139347684","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 : 2023-04-30DOI: 10.46475/aseanjr.v24i1.859
Evelyn Lai Ming Ho
{"title":"A historic event - The 21st Asian Oceanian Congress of Radiology, Bangkok, Thailand, February 9th-12th, 2023","authors":"Evelyn Lai Ming Ho","doi":"10.46475/aseanjr.v24i1.859","DOIUrl":"https://doi.org/10.46475/aseanjr.v24i1.859","url":null,"abstract":"","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135802332","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}
Background: The tumor size is one of the main factors in the treatment of cerebellopontine angle (CPA) tumors, and magnetic resonance imaging (MRI) with gadolinium-based contrast agent (GBCA) provides the best evaluation. However, administration of the gadolinium is time consuming and increasing in cost. There is a risk of nephrogenic systemic fibrosis in patients with renal failure and liver or renal transplantation. Objective: The purpose of this study was to assess the capability of constructive interference in steady state (CISS) sequence in measuring the tumor size of the CPA and internal auditory canal (IAC) masses compared to postcontrast T1-weighted images (T1-WI). Materials and Methods: The 118 MR studies with both CISS sequence and postcontrast T1-WI of 45 patients with CPA and IAC masses were retrospectively reviewed. Results: There was no significant difference between CISS and postcontrast T1-WI in measuring size in transverse diameter of the masses (p = 0.051-0.06). The longitudinal diameter measurement revealed a significant difference (p < 0.001) and the measured size on postcontrast T1-WI was slightly larger than the CISS image. The difference in median measurement between two sequences was less than 0.9 mm. and Bland-Altman plots revealed that differences between the two sequences in longitudinal and transverse diameters of the masses were within the limits of agreement. Interobserver agreement showed excellent correlation (r = 0.994-0.999, p < 0.001 by Pearson's product-moment correlation). Conclusions: The CISS sequence may be sufficient for assessing the size of CPA and IAC masses, which can be used interchangeably with postcontrast T1-weighted image as a contrast-free option, especially in follow-up studies and vulnerable settings of gadolinium administration.
背景:肿瘤大小是影响桥小脑角(CPA)肿瘤治疗的主要因素之一，钆基造影剂(GBCA)的磁共振成像(MRI)提供了最好的评价。然而，钆的管理是费时和增加成本。肾功能衰竭和肝或肾移植患者存在肾源性全身性纤维化的风险。目的:本研究的目的是评估稳态(CISS)序列在测量CPA和内耳道(IAC)肿块大小方面的能力，并与对比后t1加权图像(T1-WI)进行比较。材料与方法:回顾性分析45例CPA和IAC肿块患者的118例CISS序列和对比后T1-WI的MR研究。结果:CISS与造影后T1-WI测量肿块横径大小差异无统计学意义(p = 0.051 ~ 0.06)。纵向直径测量显示有显著差异(p <0.001)，对比后T1-WI测量的尺寸略大于CISS图像。两个序列的测量中位数差异小于0.9 mm, Bland-Altman图显示，两个序列在质量的纵向和横向直径上的差异在一致的范围内。观察者间一致性显示极好的相关性(r = 0.994-0.999, p <Pearson积差相关值为0.001)。结论:CISS序列可能足以评估CPA和IAC肿块的大小，可以与对比后t1加权图像交替使用，作为无对比的选择，特别是在随访研究和钆治疗的脆弱环境中。
{"title":"Capability of constructive interference in steady state sequence versus postcontrast T1-weighted imaging in cerebellopontine angle and internal auditory canal masses","authors":"Vorawan Charoonratana, Nuttha Sanghan, Siriporn Hirunpat, Kornpen Rattanaprueksachart","doi":"10.46475/aseanjr.v24i1.205","DOIUrl":"https://doi.org/10.46475/aseanjr.v24i1.205","url":null,"abstract":"Background: The tumor size is one of the main factors in the treatment of cerebellopontine angle (CPA) tumors, and magnetic resonance imaging (MRI) with gadolinium-based contrast agent (GBCA) provides the best evaluation. However, administration of the gadolinium is time consuming and increasing in cost. There is a risk of nephrogenic systemic fibrosis in patients with renal failure and liver or renal transplantation. Objective: The purpose of this study was to assess the capability of constructive interference in steady state (CISS) sequence in measuring the tumor size of the CPA and internal auditory canal (IAC) masses compared to postcontrast T1-weighted images (T1-WI). Materials and Methods: The 118 MR studies with both CISS sequence and postcontrast T1-WI of 45 patients with CPA and IAC masses were retrospectively reviewed. Results: There was no significant difference between CISS and postcontrast T1-WI in measuring size in transverse diameter of the masses (p = 0.051-0.06). The longitudinal diameter measurement revealed a significant difference (p < 0.001) and the measured size on postcontrast T1-WI was slightly larger than the CISS image. The difference in median measurement between two sequences was less than 0.9 mm. and Bland-Altman plots revealed that differences between the two sequences in longitudinal and transverse diameters of the masses were within the limits of agreement. Interobserver agreement showed excellent correlation (r = 0.994-0.999, p < 0.001 by Pearson's product-moment correlation). Conclusions: The CISS sequence may be sufficient for assessing the size of CPA and IAC masses, which can be used interchangeably with postcontrast T1-weighted image as a contrast-free option, especially in follow-up studies and vulnerable settings of gadolinium administration.","PeriodicalId":180936,"journal":{"name":"The ASEAN Journal of Radiology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135802325","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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