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Hellenic Journal of Nuclear Medicine

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https://www.readbyqxmd.com/read/27999830/regional-cerebral-blood-flow-changes-in-patients-with-internet-addiction-authors-reply
#1
LETTER
Guobing Liu, Hongcheng Shi
To the comments of Prof. Andreas Otte to our work we reply as follows: As was mentioned by Prof. Andreas Otte, our study was the first study of regional cerebral blood flow changes in patients with internet addiction. Therefore, there was not much previous, established experience to refer to. As an exploration study, it was inevitable that there were some insufficiencies. We feel great appreciation to Prof. Andreas Otte for his comments on our work, which will improve our studying quality in this field in the future...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27999829/regional-cerebral-blood-flow-changes-in-patients-with-internet-addiction
#2
LETTER
Andreas Otte
Dear Editor, Internet addiction (IA) has become a severe challenge of our modern world today, though little is known about its pathology. In this context, the interesting study by Liu et al. in the May-August 2016 issue of HJNM using (99m)Tc-labelled ethylene biyldicysteinate dimer single photon emission tomography (SPET) at rest and after pharmaceutical (adenosine) stress is more than welcomed. As this seems to be the first perfusion SPET study in this indication, the obtained data may be discussed carefully...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27999828/a-case-of-abdominal-mesenteric-castleman-s-disease-with-left-renal-cell-carcinoma-and-stomach-leiomyoma
#3
Shunjun Chen, Lele Song, Xinli Xie, Xingmin Han, Bing Cheng
: A rare case of abdominal mesenteric Castleman's disease with left renal cell carcinoma and stomach leiomyoma is reported. A 57 years old male patient was transferred to our hospital for investigation of a left kidney tumor. Physical examination and routine laboratory tests were normal. Multi mode imaging by 64-slices spiral computed tomography (CT) scan, the enhanced CT scan and the fluorine-18-fluorodeoxyglucose positron emission tomography/CT ((18)F-FDG PET/CT) scan were applied. Computed tomography showed a 5...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27999827/cauda-equina-syndrome-an-emergency-some-unexpected-severe-symptoms-and-conservative-treatment
#4
Philip Grammaticos, Nikitas Papadopoulos, Labib Tarazi, Dimosthenis Katsarkas
An 83 years old physician, doing only office work and no exercise, presented with cauda equine, due to a large intervertebral disk hernia between L1-L2 vertebrae, after an unorthodox movement. He also had a facet syndrome, a muscular spasm in the gluteus, a small fracture in the periphery of the body of the L2 vertebra and pain in the L4-L5, due to a previous vertebral hernia five years ago. All L1-L5 left lateral area was painful. He felt an unbearable pain. He also had a degree of paralysis of the gastrointestinal (GI) and the genitourinary system...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27999826/the-diagnosis-of-silent-myocardial-ischemia-motion-frozen-or-morphing-myocardial-perfusion-imaging
#5
EDITORIAL
Cheng Chang, Bo Ye, Wenhui Xie, Daoliang Zhang, Bei Lei, Xiaodan Ye
Silent myocardial ischemia is typically defined as objective evidence of myocardial ischemia in patients without subjective ischemia symptoms. Currently, coronary artery angiography is the gold standard for diagnosis of asymptomatic coronary artery disease (CAD). Computed tomography coronary angiography (CTCA) can visually demonstrate the morphology, trend and extent of coronary stenosis and is commonly used in clinical screening of CAD. Myocardial perfusion imaging can be used not only to identify whether anatomical stenosis causes myocardial dysfunction, but to also assess the risk stratification and prognosis of myocardial disease (MD)...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27999825/is-there-a-relationship-between-non-obstructive-coronary-artery-disease-or-cardiac-syndrome-x-and-migraine-an-integrated-multi-disciplinary-approach
#6
EDITORIAL
Reza Nemati, Iraj Nabipour, Mehdi Akbarzadeh, Majid Assadi
Non-obstructive coronary artery disease (CAD) which is mostly called cardiac syndrome X (CSX) is noted in about 30% of men and 40%-60% of women and seems to be incremental. In addition, frequent myocardial perfusion defects with various levels of severity are often seen in this disease. Recently, we noticed that the frequency of migraine in patients with CSX was noticeably higher than in healthy people and in CAD patients. This may support the evolving story that CSX is related to migraine and to chest pain and that CSX and migraine may have a similar pathophysiology...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824971/advantages-by-using-the-intradermal-microbubbles-for-sentinel-lymph-node-detection-in-penile-cancer
#7
LETTER
Ioannis D Gkegkes, Christos Iavazzo
Dear Editor, Penile cancer has a relatively low incidence of 0.6% among all types of neoplasms. These incidents can reach up to 10% in the developing countries. Resection of the primary cancer and early dissection of nodal metastases may improve survival. Nevertheless, inguinal lymphadenectomy may have a negative impact on patient's quality of life due to possible surgical site infection, lymphocyst formation or lymphoedema. Sentinel lymph node (SLN) detection by radiopharmaceuticals, was first applied in penile cancer and is defined as the identification of the first regional lymph node by the primary site of cancer...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824970/a-pediatric-malignant-paraganglioma-and-brief-review-of-the-literature
#8
Jinhua Zi, Chao Ma, Changyun Xu, Yongli Bai
: A 10 years old boy presented to our hospital complaining of belly pain. He had a retroperitoneal mass diagnosed by ultrasound 3 days before. During that time he was found to have slight hypertension. Computed tomography (CT) showed a left retroperitoneal mass with edge enhancement and central necrosis indicating pheochromocytoma (PCC). Vanillymandelic acid (VMA) in the 24 hours urine sample was not elevated. Pheochromocytoma was suspected given his hypertension and the ultrasound and CT findings...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824969/the-early-diagnosis-of-testicular-natural-killer-t-cell-lymphoma
#9
Pei Shu, Wenwu Ling, Chenjing Zhu, Jianchao Wang, Chong Jiang, Weiwei Zhang, Yue Xiao, Xuelei Ma
Testicular natural killer/T-cell lymphoma is a rare aggressive extranodal lymphoma associated with Epstein-Barr virus infection. Time to diagnose is crucial as the disease is rapidly progressive and fatal. Early suspicion is documented by imaging studies and testicular biopsies which are key factors for diagnosing testicular natural killer/T-cell lymphoma. However, no reports have described the results of imaging studies. In this paper, contrast-enhanced ultrasonography (CEUS), fluorine-18-fuorodexoyglucose-positron emission tomography/computed tomography ((18)F-FDG PET/CT) and tumor biopsies were all diagnostic of testicular natural killer/T-cell lymphoma...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824968/an-intrapericardial-ectopic-thyroid-mimicking-metastasis-in-a-patient-with-papillary-thyroid-cancer-localization-differential-diagnosis-by-18-f-fdg-pet-ct-and-ablation-by-131-i
#10
Seol Hoon Park, Minjung Seo, Tae Young Park, Seong Nam-Goong
We report a very rare case of incidental intrapericardial thyroid in a papillary thyroid cancer patient. Post ablation scan revealed iodine-131 ((131)I) uptake in the mid-chest. Fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) was performed and showed a (18)F-FDG avid lesion between the right atrium and the ascending aorta, (which was) shown to be an ectopic thyroid and not metastasis. The lesion disappeared on a 6 month follow-up (123)I whole body scan while serum thyroglobulin was negative...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824967/asymmetric-radiotracer-activity-of-enlarged-cerebral-spinal-fluid-space-on-radionuclide-cisternography-with-spet-ct
#11
Julie C Bulman, Jason Wachsmann, Fangyu Peng
OBJECTIVE: Cerebrospinal fluid (CSF) leak is a well-known complication of skull or sinus surgery. Radionuclide cisternography has high sensitivity for detection of CSF leak, commonly performed in conjunction with radioactivity assay of nasal pledgets. Our objective was to highlight the usefulness of single photon emission tomography/computed tomography (SPET/CT) in radionuclide cisternography by presenting a case of a 41 years old man with right sided rhinorrhea following craniotomies and sinus surgery, who was subjected to radioactivity assay of nasal pledgets and radionuclide cisternography for suspected CSF leak...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824966/update-of-the-role-of-pet-ct-and-pet-mri-in-the-management-of-patients-with-cervical-cancer
#12
Benjapa Khiewvan, Drew A Torigian, Sahra Emamzadehfard, Koosha Paydary, Ali Salavati, Sina Houshmand, Sara Pourhassan Shamchi, Thomas J Werner, Aysel Aydin, Shambo Guha Roy, Abass Alavi, Rakesh Kumar
In cervical cancer (CC), fluorine18-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) has been proven to be beneficial for patient management. Positron emission tomography/CT is useful in pretreatment evaluation due to the ability to evaluate disease extent and to assess regional lymph nodes as well as distant sites for metastases. Positron emission tomography/CT has an impact on treatment planning as well as it is incorporated in radiation therapy planning, resulting in more appropriate and effective treatment with less cost and radiation dose to normal tissues...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824965/hashimoto-s-thyroiditis-and-papillary-thyroid-carcinoma-are-cytokeratin-19-and-p63-proteins-of-any-diagnostic-value
#13
Smaroula N Divani, George P Kalodimos, Matteo A Lioupis, Nikolaos Ch Syrmos
BACKGROUND: The relation between Hashimoto's thyroiditis (HT) and papillary thyroid carcinoma (PTC) remains controversial. We aimed to study the coexistence of PTC and HT and the diagnostic utility of cytokeratin19 and P63 proteins expression in all positive for PTC cases of HT. SUBJECTS AND METHODS: We analyzed data from 343 patients who underwent fine needle aspiration cytology followed by thyroid surgery over a six years period. Thyroid scans and blood measurements for anti-thyroid peroxidase antibodies (TPOAb), thyroid stimulating hormone (TSH), anti-thyroglobulin antibodies (TgAb) and free thyroid hormones were performed...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824964/clinical-significance-of-incidental-focal-bowel-uptake-on-18-f-fdg-pet-ct-as-related-to-colorectal-cancer
#14
Sofus Rønne Soltau, Søren Hess, Tram Nguyen, Oke Gerke, Henrik Petersen, Abass Alavi, Poul Flemming Høilund-Carlsen
OBJECTIVE: Increased focal colorectal uptake of fluorine-18-fluorodeoxyglucose ((18)F-FDG) is reported to occur in 1%-3% of patients undergoing (18)F-FDG positron emission tomography/computed tomography (PET/CT) for disease outside the bowel. However, there is no consensus on how to deal with this finding in the clinic. Due to the non-specific appearance of such lesions and a certain rate of false positive findings, patients may by subjected to unnecessary invasive procedures or, conversely, cancers may be overlooked if the risk of malignancy is downplayed...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824963/-18-f-fdg-pet-ct-can-differentiate-vertebral-metastases-from-schmorl-s-nodes-by-distribution-characteristics-of-the-18-f-fdg
#15
Zhengming Wang, Daqing Ma, Jigang Yang
BACKGROUND: Differentiation of vertebral metastases from Schmorl's nodes, especially with fluorine-18-fluorodeoxyglucose ((18)F-FDG) uptake, is very important for the appropriate management of these patients in case they have malignancy. We aimed to evaluate the value of (18)F-FDG positron emission tomography/computed tomography (PET/CT) in differentiating vertebral metastases from Schmorl's nodes with (18)F-FDG uptake. SUBJECTS AND METHODS: Fourteen patients with malignancy underwent (18)F-FDG PET/CT, which showed abnormal (18)F-FDG uptake in 19 Schmorl's nodes...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824962/a-novel-method-for-the-optimization-of-positron-emission-tomography-scanners-imaging-performance
#16
Christos M Michail, George E Karpetas, George P Fountos, Nektarios I Kalyvas, Ioannis G Valais, Christina Fountzoula, Antonis Zanglis, Ioannis S Kandarakis, George S Panayiotakis
OBJECTIVE: The aim of the present study was to propose a comprehensive method for positron emission tomography (PET) scanners image quality assessment, by simulation of a thin layer chromatography (TLC) flood source with a previously validated Monte Carlo model. METHODS AND MATERIALS: We used the GATE Monte Carlo package (GEANT4 application for tomographic emission) and the reconstructed images were obtained using the software for tomographic image reconstruction (STIR), with cluster computing...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824961/an-ultrasound-image-navigation-robotic-prostate-brachytherapy-system-based-on-us-to-mri-deformable-image-registration-method
#17
Shihui Zhang, Shan Jiang, Zhiyong Yang, Ranlu Liu, Yunpeng Yang, Honghua Liang
OBJECTIVE: This paper describes an ultrasound image navigation robotic prostate brachytherapy system. It uses a 2D ultrasound (US) probe rigidly fixed to a robotic needle insertion mechanism. Combined with the US probe registration and image registration, this system will help to navigate the prostate brachytherapy to increase the inserting accuracy. SUBJECTS AND METHODS: The novelty of the system is that after the US probe registration using an improved iterative closest point (ICP) registration method, the initial registration for the magnetic resonance imaging (MRI) and US image can be completely automatically...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824960/the-effect-of-elevated-lipoprotein-a-on-autologous-platelets-function-a-retrospective-analysis
#18
Linda Brammen, Suzanne Granegger, Helmut Sinzinger
OBJECTIVE: Platelet labeling is used to study platelets in vivo in terms of diagnosing intravascular thrombosis, as well as studying their role and biological activity in atherosclerosis. A low labeling efficiency (LE) can negatively impair testing results. Labeling efficiency depends on various factors, including low-density-lipoprotein (LDL)-cholesterol levels in the blood. Lipoprotein(a) (Lp(a)) is a lipoprotein subclass that when elevated, is frequently associated with the premature development of cardiovascular disease through activation of different signaling pathways and cell surface receptors...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824959/risk-factors-and-stratification-for-recurrence-of-patients-with-differentiated-thyroid-cancer-elevated-thyroglobulin-and-negative-i-131-whole-body-scan-by-restaging-18-f-fdg-pet-ct
#19
Kursat Okuyucu, Semra Ince, Engin Alagoz, Ozdes Emer, Huseyin San, Elif Balkan, Aslı Ayan, Coskun Meric, Cem Haymana, Cengizhan Acıkel, Bengul Gunalp, Alper Ozgur Karacalioglu, Nuri Arslan
OBJECTIVE: In nearly 20%-30% of patients with differentiated thyroid carcinoma (DTC) relapse and 7% of them die during the next 10 years after initial diagnosis. In 10%-30% of patients with DTC after ablation therapy during the follow-up show a negative iodine-131 ((131)I) whole-body screening test ((131)I WBS) and increased serum thyroglobulin (Tg) level. Loss of ability of DTC metastatic lesions to trap (131)I is associated with pure survival and often aggressive disease. Several studies have shown that in DTC cases non trapping (131)I, fluorine-18-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) can detect recurrence or metastases with high sensitivity (80%-90%)...
September 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824958/the-value-of-exercise-spet-for-the-detection-of-coronary-artery-steal-syndrome-secondary-to-unligated-major-side-branch-of-left-internal-mammary-artery
#20
Osman Beton, Hakki Kaya, Ozan Kandemir, Buket Alibazoglu, Haluk Alibazoglu, Ercan Karabey, Okan Onur Turgut, Mehmet Birhan Yilmaz
OBJECTIVE: The clinical significance of unligated major left internal mammary artery (LIMA)-side branches (SB) remains controversial in patients with previous coronary artery bypass graft (CABG) surgery. The aim of this study was to investigate the clinical significance of unligated major LIMA-SB by using exercise myocardial perfusion imaging (MPI) with single-photon emission tomography. SUBJECTS AND METHODS: We conducted a retrospective analysis of 2819 consecutive patients who underwent diagnostic angiography...
September 2016: Hellenic Journal of Nuclear Medicine
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