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Asia Oceania Journal of Nuclear Medicine & Biology

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https://www.readbyqxmd.com/read/27904875/history-and-perspectives-of-nuclear-medicine-in-bangladesh
#1
Raihan Hussain
Bangladesh is one of the smaller states in Asia. But it has a long and rich history of nuclear medicine for over sixty years. The progress in science and technology is always challenging in a developing country. In 1958, work for the first Nuclear Medicine facility was commenced in Dhaka in a tin-shed known as 'Radioisotope Centre' and was officially inaugurated in 1962. Since the late 50s of the last century nuclear medicine in Bangladesh has significantly progressed through the years in its course of development, but still the facilities are inadequate...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904874/imaging-of-accidental-contamination-by-fluorine-18-solution-a-quick-troubleshooting-procedure
#2
Kalevi Kairemo, Aki Kangasmäki
To the best of our knowledge, imaging of accidental exposure to radioactive fluorine-18 (F-18) due to liquid spill has not been described earlier in the scientific literature. The short half-life of F-18 (t½=110 min), current radiation safety requirements, and Good Manufacturing Practice (GMP) regulations on radiopharmaceuticals have restrained the occurrence of these incidents. The possibility of investigating this type of incidents by gamma and positron imaging is also quite limited. Additionally, a quick and precise analysis of radiochemical contamination is cumbersome and sometimes challenging if the spills of radioactive materials are low in activity...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904873/evaluation-of-the-effect-of-tumor-position-on-standardized-uptake-value-using-time-of-flight-reconstruction-and-point-spread-function
#3
Yasuharu Wakabayashi, Kenichi Kashikura, Yasuyuki Takahashi, Hitoshi Yabe, Akihiro Ichikawa, Souichi Yamamoto, Ayumi Ishii, Kunio Doi
OBJECTIVES: The present study was conducted to examine whether the standardized uptake value (SUV) may be affected by the spatial position of a lesion in the radial direction on positron emission tomography (PET) images, obtained via two methods based on time-of-flight (TOF) reconstruction and point spread function (PSF). METHODS: A cylinder phantom with the sphere (30 mm diameter), located in the center was used in this study. Fluorine-18 fluorodeoxyglucose ((18)F-FDG) concentrations of 5...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904872/background-based-delineation-of-internal-tumor-volume-in-static-positron-emission-tomography-in-a-phantom-study
#4
Yangchun Chen, Xiangrong Chen, Ji-An Liu, Fanyong Li
OBJECTIVES: Considering the fact that the standardized uptake value (SUV) of a normal lung tissue is expressed as x±SD, x+3×SD could be considered as the threshold value to outline the internal tumor volume (ITV) of a lung neoplasm. METHODS: Three hollow models were filled with 55.0 kBq/mL fluorine-18 fluorodeoxyglucose ((18)F-FDG) to represent tumors. The models were fixed to a barrel filled with 5.9 kBq/mL (18)F-FDG to characterize normal lung tissues as a phantom...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904871/in-vivo-measurement-and-characterization-of-a-novel-formulation-of-177-lu-dota-octreotate
#5
Dale L Bailey, Thomas M Hennessy, Kathy P Willowson, E Courtney Henry, David Lh Chan, Alireza Aslani, Paul J Roach
OBJECTIVES: Lutetium-177 can be made with high specific activity and with no other isotopes of lutetium present, referred to as "No Carrier Added" (NCA) (177)Lu. We have radiolabelled DOTA-conjugated peptide DOTA-(Tyr(3))-octreotate with NCA (177)Lu ("NCA-LuTATE") and used it in nearly 40 therapeutic administrations for subjects with neuroendocrine tumours or meningiomas. In this paper, we report on our initial studies on aspects of the biodistribution and dosimetry of NCA-LuTATE from gamma camera 2D whole body (WB) and quantitative 3D SPECT (qSPECT) (177)Lu imaging...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904870/preclinical-study-of-68-ga-dotatoc-biodistribution-assessment-in-syrian-rats-and-evaluation-of-absorbed-dose-in-human-organs
#6
Mojdeh Naderi, Samaneh Zolghadri, Hassan Yousefnia, Ali Ramazani, Amir Reza Jalilian
OBJECTIVES: Gallium-68 DOTA-DPhe(1)-Tyr(3)-Octreotide ((68)Ga-DOTATOC) has been applied by several European centers for the treatment of a variety of human malignancies. Nevertheless, definitive dosimetric data are yet unavailable. According to the Society of Nuclear Medicine and Molecular Imaging, researchers are investigating the safety and efficacy of this radiotracer to meet Food and Drug Administration requirements. The aim of this study was to introduce the optimized procedure for (68)Ga-DOTATOC preparation, using a novel germanium-68 ((68)Ge)/(68)Ga generator in Iran and evaluate the absorbed doses in numerous organs with high accuracy...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904869/value-of-dedicated-head-and-neck-18-f-fdg-pet-ct-protocol-in-detecting-recurrent-and-metastatic-lesions-in-post-surgical-differentiated-thyroid-carcinoma-patients-with-high-serum-thyroglobulin-level-and-negative-131-i-whole-body-scan
#7
Mai Hong Son, Bui Quang Bieu, Le Ngoc Ha
OBJECTIVES: In clinical practice, approximately 10-25% of post-surgical differentiated thyroid carcinoma (DTC) patients with high serum thyroglobulin (Tg) and negative (131)I whole-body scan (WBS) have poor prognosis due to recurrent or metastatic lesions after radioactive iodine treatment. The purpose of this study was to evaluate the value of (18)F-FDG PET/CT scan in DTC patients with high serum Tg level and negative (131)I WBS. METHODS: 69 post-surgical DTC patients with high serum Tg level and negative post ablation (131)I WBS were enrolled in this study...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904868/predictive-ability-of-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-for-pathological-complete-response-and-prognosis-after-neoadjuvant-chemotherapy-in-triple-negative-breast-cancer-patients
#8
Sachiko Kiyoto, Yoshifumi Sugawara, Kohei Hosokawa, Rieko Nishimura, Natsumi Yamashita, Shozo Ohsumi, Teruhito Mochizuki
OBJECTIVES: The mortality of patients with locally advanced triple-negative breast cancer (TNBC) is high, and pathological complete response (pCR) to neoadjuvant chemotherapy (NAC) is associated with improved prognosis. This retrospective study was designed and powered to investigate the ability of (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG-PET/CT) to predict pathological response to NAC and prognosis after NAC. METHODS: The data of 32 consecutive women with clinical stage II or III TNBC from January 2006 to December 2013 in our institution who underwent FDG-PET/CT at baseline and after NAC were retrospectively analyzed...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27904867/aojnmb-appreciates-the-best-contributors-in-years-2015-2013
#9
EDITORIAL
S Rasoul Zakavi
No abstract text is available yet for this article.
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408901/nuclear-medicine-in-the-philippines-a-glance-at-the-past-a-gaze-at-the-present-and-a-glimpse-of-the-future
#10
Patricia A Bautista, Teofilo O L San Luis
While the introduction of radioactive tracers in the study of metabolic pathways has been well-documented in clinical thyroidology as early as 1924, the widespread utilization in other clinical specialties has been hampered by slow developments in radiation-detecting devices and in the production of appropriate radiopharmaceuticals, in addition to the morbid fear of radiation. In the Philippines, the first radioisotope laboratory was established in 1956. Ten years later, the Philippine Society of Nuclear Medicine was formed...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408900/myocardial-perfusion-spect-imaging-in-dextrocardia-with-situs-inversus-a-case-report
#11
Olusegun Akinwale Ayeni, Nico Malan, Emmanuel Niiboye Hammond, Mboyo-Di-Tamba Heben Vangu
Dextrocardia is a cardiac positional anomaly in which the heart is located in the right hemithorax with its base-to-apex axis directed to the right and caudad. Situs inversus is an autosomal recessive disorder that causes organs in the chest and abdomen to be positioned in a mirror image from their normal position. Dextrocardia may occur in isolation or as part of situs inversus. Similarly, situs inversus may occur with or without dextrocardia. Situs inversus accompanied with dextrocardia (situs inversus totalis) is a rare congenital abnormality occurring in 0...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408899/hepatosplenic-candidiasis-detected-by-18-f-fdg-pet-ct
#12
Domenico Albano, Giovanni Bosio, Mattia Bertoli, Giulia Petrilli, Francesco Bertagna
Hepatosplenic candidiasis is a fungal infection, which mostly affects patients with hematologic malignancies such as leukemia. The pathogenesis of this infection is not clear yet, and the liver is the most commonly affected organ. Diagnosis of hepatosplenic candidiasis can be only established via biopsy, since computed tomography (CT) scan, ultrasonography, and magnetic resonance imaging (MRI) yield non-specific results. The role of fluorine-18 fluorodeoxyglucose positron emission tomography /computed tomography ((18)F-FDG PET/CT) in diagnosis of hepatosplenic candidiasis remains undetermined, considering a few evidences in the literature...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408898/preparation-and-biological-study-of-68-ga-dota-alendronate
#13
Ashraf Fakhari, Amir R Jalilian, Fariba Johari-Daha, Mehdi Shafiee-Ardestani, Ali Khalaj
OBJECTIVES: In line with previous research on the development of conjugated bisphosphonate ligands as new bone-avid agents, in this study, DOTA-conjugated alendronate (DOTA-ALN) was synthesized and evaluated after labeling with gallium-68 ((68)Ga). METHODS: DOTA-ALN was synthesized and characterized, followed by (68)Ga-DOTA-ALN preparation, using DOTA-ALN and (68)GaCl3 (pH: 4-5) at 92-95° C for 10 min. Stability tests, hydroxyapatite assay, partition coefficient calculation, biodistribution studies, and imaging were performed on the developed agent in normal rats...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408897/physiologically-based-pharmacokinetic-pbpk-model-for-biodistribution-of-radiolabeled-peptides-in-patients-with-neuroendocrine-tumours
#14
Radovan Gospavic, Peter Knoll, Siroos Mirzaei, Viktor Popov
OBJECTIVES: The objectives of this work was to assess the benefits of the application of Physiologically Based Pharmacokinetic (PBPK) models in patients with different neuroendocrine tumours (NET) who were treated with Lu-177 DOTATATE. The model utilises clinical data on biodistribution of radiolabeled peptides (RLPs) obtained by whole body scintigraphy (WBS) of the patients. METHODS: The blood flow restricted (perfusion rate limited) type of the PBPK model for biodistribution of radiolabeled peptides (RLPs) in individual human organs is based on the multi-compartment approach, which takes into account the main physiological processes in the organism: absorption, distribution, metabolism and excretion (ADME)...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408896/validation-of-computed-tomography-based-attenuation-correction-of-deviation-between-theoretical-and-actual-values-in-four-computed-tomography-scanners
#15
Nobuhiro Yada, Hideo Onishi
OBJECTIVES: In this study, we aimed to validate the accuracy of computed tomography-based attenuation correction (CTAC), using the bilinear scaling method. METHODS: The measured attenuation coefficient (μm) was compared to the theoretical attenuation coefficient (μt), using four different CT scanners and an RMI 467 phantom. The effective energy of CT beam X-rays was calculated, using the aluminum half-value layer method and was used in conjunction with an attenuation coefficient map to convert the CT numbers to μm values for the photon energy of 140 keV...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408895/evaluation-of-iterative-reconstruction-method-and-attenuation-correction-in-brain-dopamine-transporter-spect-using-an-anthropomorphic-striatal-phantom
#16
Akira Maebatake, Ayaka Imamura, Yui Kodera, Yasuo Yamashita, Kazuhiko Himuro, Shingo Baba, Kenta Miwa, Masayuki Sasaki
OBJECTIVES: The aim of this study was to determine the optimal reconstruction parameters for iterative reconstruction in different devices and collimators for dopamine transporter (DaT) single-photon emission computed tomography (SPECT). The results were compared between filtered back projection (FBP) and different attenuation correction (AC) methods. METHODS: An anthropomorphic striatal phantom was filled with (123)I solutions at different striatum-to-background radioactivity ratios...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408894/evaluation-of-simultaneous-dual-radioisotope-spect-imaging-using-18-f-fluorodeoxyglucose-and-99m-tc-tetrofosmin
#17
Yasuyuki Takahashi, Mizuki Mochiki, Keiko Koyama, Toshihiko Ino, Hiroyuki Yamaji, Atsuko Kawakami
OBJECTIVES: Use of a positron emission tomography (PET)/single-photon emission computed tomography (SPECT) system facilitates the simultaneous acquisition of images with fluorine-18 fluorodeoxyglucose ((18)F-FDG) and technetium ((99m)Tc)-tetrofosmin. However, (18)F has a short half-life, and 511 keV Compton-scattered photons are detected in the (99m)Tc energy window. Therefore, in this study, we aimed to investigate the consequences of these facts. METHODS: The crosstalk correction for images in the (99m)Tc energy window involved the dual energy window (DEW) subtraction method...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408893/role-of-pre-therapeutic-18-f-fdg-pet-ct-in-guiding-the-treatment-strategy-and-predicting-prognosis-in-patients-with-esophageal-carcinoma
#18
Teik Hin Tan, Ching Yeen Boey, Boon Nang Lee
OBJECTIVES: The present study aimed to evaluate the role of pre-therapeutic (18)fluorine-fluorodeoxyglucose positron emission tomography-computed tomography ((18)F-FDG PET-CT) and maximum standardized uptake value (SUVmax) in guiding the treatment strategy and predicting the prognosis of esophageal carcinoma, using the survival data of the patients. METHODS: The present retrospective, cohort study was performed on 40 consecutive patients with esophageal carcinoma (confirmed by endoscopic biopsy), who underwent pre-operative (18)F-FDG PET-CT staging between January 2009 and June 2014...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408892/dual-time-point-fdg-pet-ct-imaging-of-temporal-bone-chondroblastoma-a-report-of-two-cases
#19
Akira Toriihara, Atsunobu Tsunoda, Akira Takemoto, Kazunori Kubota, Youichi Machida, Ukihide Tateishi
Temporal bone chondroblastoma is an extremely rare benign bone tumor. We encountered two cases showing similar imaging findings on computed tomography (CT), magnetic resonance imaging (MRI), and dual-time-point (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET)/CT. In both cases, CT images revealed temporal bone defects and sclerotic changes around the tumor. Most parts of the tumor showed low signal intensity on T2-weighted MRI images and non-uniform enhancement on gadolinium contrast-enhanced T1-weighted images...
2015: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27408891/fdg-pet-ct-and-ct-findings-of-a-benign-solitary-fibrous-tumor-of-the-kidney-correlation-with-pathology
#20
Reiko Nakajima, Koichiro Abe, Tsunenori Kondo, Yoji Nagashima, Ken Kimura, Kenji Fukushima, Mitsuru Momose, Chisato Kondo, Kazunari Tanabe, Shuji Sakai
Herein, we report the F-18 fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET)/computed tomography (CT) findings of a benign solitary fibrous tumor (SFT) of the kidney. The patient was a 63-year-old woman with a mass in the right kidney (10×9.7 cm), incidentally found on CT images. The CT scan showed a lobulated tumor arising from the hilum of the right kidney. The tumor consisted of two components with different patterns of enhancement. Most of the tumor demonstrated moderate enhancement from the corticomedullary to nephrographic phase...
2015: Asia Oceania Journal of Nuclear Medicine & Biology
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