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Nuclear Medicine and Molecular Imaging

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https://www.readbyqxmd.com/read/27994694/-99m-tc-mibi-uptake-in-a-thyroid-adenoma-with-diffuse-adipose-metaplasia
#1
Gaetano Paone, Luca Mazzucchelli, Giuseppe Peloni, Fabrizio Fasolini, Luca Giovanella
A 71-year-old female underwent a (99m)Tc-MIBI scan to characterize a cold nodule (30 mm) of the left thyroid lobe. The nodule showed diffuse uptake and retention of the radiotracer. After resection, histological examination demonstrated a microfollicular adenoma with diffuse white adipose metaplasia. Although mitochondria in brown adipose tissue have been widely studied, we have only a limited understanding of the relevance of mitochondria in white adipose tissue. Active mitochondria are present in white adipocytes, and this may account for the MIBI uptake, mimicking a hyperproliferation pattern, in our patient(...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994693/systemic-immune-response-to-vaccination-on-fdg-pet-ct
#2
Mark Mingos, Stephanie Howard, Nicholas Giacalone, David Kozono, Heather Jacene
A patient with newly diagnosed right lung cancer had transient (18)F-fluorodeoxyglucose (FDG)-avid left axillary lymph nodes and intense splenic FDG uptake on positron emission tomography (PET)/computed tomography (CT). History revealed that the patient received a left-sided influenza vaccine 2-3 days before the examination. Although inflammatory FDG uptake in ipsilateral axillary nodes is reported, to our knowledge, this is the first report of visualization of the systemic immune response in the spleen related to the influenza vaccination on FDG-PET/CT...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994692/incidental-findings-of-intense-radioiodine-uptake-in-struma-ovarii-and-bilateral-nonlactating-breasts-simultaneously-on-postablation-131-i-spect-ct-for-papillary-thyroid-cancer
#3
Hye-Kyung Shim, Mi Ra Kim
A 52-year-old woman diagnosed with papillary thyroid carcinoma was referred for (131)I therapy following total thyroidectomy. She was given 4,810 MBq (130 mCi) of (131)I following 4 weeks of thyroid hormone withdrawal. A posttherapy scan showed intense, focal activity in the pelvis and intense, diffuse activity on both sides of the chest, which was localized to the right ovary and both breasts on SPECT/CT examination. She had bilateral nipple pain and a history of antidopaminergic drugs as combination medication for her rheumatoid arthritis and prokinetics during radioiodine therapy...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994691/giant-cell-tumor-with-secondary-aneurysmal-bone-cyst-shows-heterogeneous-metabolic-pattern-on-18-f-fdg-pet-ct-a-case-report
#4
Hee Jeong Park, Seong Young Kwon, Sang-Geon Cho, Jahae Kim, Ho-Chun Song, Sung Sun Kim, Yeon Hong Yoon, Jin Gyoon Park
Giant cell tumor (GCT) is a generally benign bone tumor accounting for approximately 5 % of all primary bone neoplasms. Cystic components in GCTs that indicate secondary aneurysmal bone cysts (ABCs) are reported in 14 % of GCTs. Although both of them have been described separately in previous reports that may show considerable fluorodeoxyglucose (FDG) uptake despite their benign nature, the findings of GCT with secondary ABC on (18)F-FDG positron emission tomography/computed tomography (PET/CT) have not been well-known...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994690/unusual-uptake-of-prostate-specific-tracer-68-ga-psma-hbed-cc-in-a-benign-thyroid-nodule
#5
Nishikant Avinash Damle, Madhavi Tripathi, Partha Sarathi Chakraborty, Manas Kumar Sahoo, Chandrasekhar Bal, Shipra Aggarwal, Geetanjali Arora, Praveen Kumar, Rajeev Kumar, Ravikant Gupta
(68)Ga-Prostate specific membrane antigen- N,N'-bis[2-hydroxy-5-(carboxyethyl)benzyl]ethylenediamine-N,N'-diacetic acid- positron emission tomography/computed tomography or 68 Ga- HBED-CC-PSMA PET/CT, popularly known as PSMA PET/CT, is able to detect a small volume of recurrent prostate carcinoma (PC) when there is a prostate specific antigen (PSA) rise on follow-up after prostatectomy or other definitive treatment for PC. The use of PSMA PET/CT in the initial staging in PC is uncertain at this time. Clinical studies are underway to define its exact role in the management of the disease...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994689/random-assay-in-radioimmunoassay-feasibility-and-application-compared-with-batch-assay
#6
Jung Min Lee, Hwan Hee Lee, Sohyun Park, Tae Sung Kim, Seok-Ki Kim
PURPOSE: The batch assay has been conventionally used for radioimmunoassay (RIA) because of its technical robustness and practical convenience. However, it has limitations in terms of the relative lag of report time due to the necessity of multiple assays in a small number of samples compared with the random assay technique. In this study, we aimed to verify whether the random assay technique can be applied in RIA and is feasible in daily practice. METHODS: The coefficients of variation (CVs) of eight standard curves within a single kit were calculated in a CA-125 immunoradiometric assay (IRMA) for the reference of the practically ideal CV of the CA-125 kit...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994688/iodine-uptake-patterns-on-post-ablation-whole-body-scans-are-related-to-elevated-serum-thyroglobulin-levels-after-radioactive-iodine-therapy-in-patients-with-papillary-thyroid-carcinoma
#7
Geum-Cheol Jeong, Minchul Song, Hee Jeong Park, Jung-Joon Min, Hee-Seung Bom, Sang-Geon Cho, Ki Seong Park, Sae-Ryung Kang, Jahae Kim, Ho-Chun Song, Seong Young Kwon
PURPOSE: Serum thyroglobulin (Tg) level is frequently elevated shortly after radioactive iodine (RAI) ablation therapy. The authors studied the relationship between the elevation of serum Tg after RAI therapy and iodine uptake pattern on post-ablation whole body scans (RxWBSs) in patients with papillary thyroid carcinoma (PTC). MATERIALS AND METHODS: The study subjects were patients with PTC that had undergone first RAI therapy with thyroid hormone withdrawal after total thyroidectomy...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994687/clinical-meaning-of-hot-uptake-on-bone-scan-in-symptomatic-accessory-navicular-bones
#8
Ari Chong, Jung-Min Ha, Jun-Young Lee
INTRODUCTION: We analyzed clinical factors related to uptake on a Tc-99 m HDP bone scan of the accessory navicular (AN). MATERIALS AND METHODS: We retrospectively reviewed patients who had been examined by an orthopedic surgeon and underwent bone scan due to suspected symptomatic AN. A three-point grading system was used to evaluate uptake on bone scan. Relationships between grade, symptoms, age, gender, symptom duration, and bone size were analyzed. RESULTS: In total, 73 ANs (30 asymptomatic, 43 symptomatic) were enrolled...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994686/visual-pattern-and-serial-quantitation-of-18-f-sodium-fluoride-pet-ct-in-asymptomatic-patients-after-hip-and-knee-arthroplasty
#9
Hye Joo Son, Young Jin Jeong, Hyun Jin Yoon, Lih Wang, Hyeon Jun Kim, Jong-Hwan Park, Do-Young Kang
PURPOSE: We investigated the visual tracer distribution pattern and serial changes in uptake ratio in different anatomical zones during the natural postoperative course in order to establish a reference for evaluation of patients with complications. METHODS: A total of 36 patients without symptoms after hip or knee arthroplasty were grouped according to the interval between surgery and the scan. The serial changes in SUVmean in each periprosthetic zone were quantified using the volume of interest isocontour method...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994685/intra-patient-variability-of-fdg-standardized-uptake-values-in-mediastinal-blood-pool-liver-and-myocardium-during-r-chop-chemotherapy-in-patients-with-diffuse-large-b-cell-lymphoma
#10
Soo Jeong Kim, Hyun Kyung Yi, Chae Hong Lim, Young Seok Cho, Joon Young Choi, Yearn Seong Choe, Kyung-Han Lee, Byung-Tae Kim, Seung Hwan Moon
PURPOSE: (18)F-fluorodeoxyglucose (FDG) PET/CT is useful for staging and evaluating treatment response in patients with diffuse large B-cell lymphoma (DLBCL). A five-point scale model using the mediastinal blood pool (MBP) and liver as references is a recommended method for interpreting treatment response. We evaluated the variability in standardized uptake values (SUVs) of the MBP, liver, and myocardium during chemotherapy in patients with DLBCL. METHODS: We analyzed 60 patients with DLBCL who received rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (R-CHOP) treatment and underwent baseline, interim, and final FDG PET/CT scans...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994684/indeterminate-findings-on-oncologic-pet-ct-what-difference-does-pet-mri-make
#11
Tyler J Fraum, Kathryn J Fowler, Jonathan McConathy, Farrokh Dehdashti
BACKGROUND: Positron emission tomography/computed tomography (PET/CT) with 2-deoxy-2-[(18)F]fluoro-D-glucose (FDG) has become the standard of care for the initial staging and subsequent treatment response assessment of many different malignancies. Despite this success, PET/CT is often supplemented by MRI to improve assessment of local tumor invasion and to facilitate detection of lesions in organs with high background FDG uptake. Consequently, PET/MRI has the potential to expand the clinical value of PET examinations by increasing reader certainty and reducing the need for subsequent imaging...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994683/recent-advances-in-the-development-of-pet-spect-probes-for-atherosclerosis-imaging
#12
REVIEW
Yoichi Shimizu, Yuji Kuge
The rupture of vulnerable atherosclerotic plaques and subsequent thrombus formation are the major causes of myocardial and cerebral infarction. Accordingly, the detection of vulnerable plaques is important for risk stratification and to provide appropriate treatment. Inflammation imaging using 2-deoxy-2-[(18)F]fluoro-D-glucose ((18)F-FDG) has been most extensively studied for detecting vulnerable atherosclerotic plaques. It is of great importance to develop PET/SPECT probes capable of specifically visualizing the biological molecules involved in atherosclerotic plaque formation and/or progression...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994682/stem-cell-monitoring-with-a-direct-or-indirect-labeling-method
#13
REVIEW
Min Hwan Kim, Yong Jin Lee, Joo Hyun Kang
The molecular imaging techniques allow monitoring of the transplanted cells in the same individuals over time, from early localization to the survival, migration, and differentiation. Generally, there are two methods of stem cell labeling: direct and indirect labeling methods. The direct labeling method introduces a labeling agent into the cell, which is stably incorporated or attached to the cells prior to transplantation. Direct labeling of cells with radionuclides is a simple method with relatively fewer adverse events related to genetic responses...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27994681/molecular-pain-imaging-by-nuclear-medicine-where-does-it-stand-and-where-is-it-going
#14
EDITORIAL
Jung-Joon Min
No abstract text is available yet for this article.
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27540434/false-positive-radioactive-iodine-uptake-mimicking-miliary-lung-metastases-in-a-patient-affected-by-papillary-thyroid-cancer-and-iga-deficiency
#15
Andrew Paul Demidowich, Amartya Kundu, James C Reynolds, Francesco S Celi
A 42-year-old female with immunoglobulin A deficiency and recurrent sinopulmonary infections underwent thyroidectomy for papillary thyroid cancer (PTC). Follow-up (123)I scintigraphy demonstrated diffuse pulmonary uptake, suggesting metastatic disease. However, subsequent pathologic, biochemical and radiographic testing proved that she was in fact disease free, and the initial (123)I pulmonary uptake was identified as a false positive. Inflammatory conditions may rarely cause iodine uptake in non-thyroidal tissues due to local retention, organification, and/or immunologic utilization...
September 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27540433/vertebral-uptake-of-tc-99m-macroaggregated-albumin-maa-with-spect-ct-occurring-in-superior-vena-cava-obstruction
#16
Shawn Karls, Hani Hassoun, Vilma Derbekyan
A 67-year-old male presented with dyspnea for which lung scintigraphy was ordered to rule out pulmonary embolus. Planar images demonstrated abnormal midline uptake of Tc-99m macroaggregated albumin, which SPECT/CT localized to several thoracic vertebrae. Thoracic vertebral uptake on perfusion lung scintigraphy was previously described on planar imaging. Radionuclide venography and contrast-enhanced CT subsequently demonstrated superior vena cava (SVC) obstruction with collateralization through the azygous/hemiazygous system and vertebral venous plexus...
September 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27540432/role-of-18-f-fdg-pet-ct-in-monitoring-the-cyclophosphamide-induced-pulmonary-toxicity-in-patients-with-breast-cancer-2-case-reports
#17
Sameer Kamalakar Taywade, Rakesh Kumar, Sainath Bhethanabhotla, Chandrasekhar Bal
Drug induced pulmonary toxicity is not uncommon with the use of various chemotherapeutic agents. Cyclophosphamide is a widely used chemotherapeutic drug in the treatment of breast cancer. Although rare, lung toxicity has been reported with cyclophosphamide use. Detection of bleomycin induced pulmonary toxicity and pattern of (18)F-fluorodeoxyglucose ((18)F-FDG) uptake in lungs on fluorodeoxyglucose positron emission tomography-computed tomography ((18)F-FDG PET-CT) has been elicited in literature in relation to lymphoma...
September 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27540431/brain-18-f-fdg-18-f-florbetaben-pet-ct-123-i-fp-cit-spect-and-cardiac-123-i-mibg-imaging-for-diagnosis-of-a-cerebral-type-of-lewy-body-disease
#18
Axel Van Der Gucht, Laurent Cleret de Langavant, Ophélie Bélissant, Corentin Rabu, Anne-Ségolène Cottereau, Eva Evangelista, Julia Chalaye, Sophie Bonnot-Lours, Gilles Fénelon, Emmanuel Itti
A 67-year-old man was referred for fluctuating neuropsychiatric symptoms, featuring depression, delirious episodes, recurrent visual hallucinations and catatonic syndrome associated with cognitive decline. No parkinsonism was found clinically even under neuroleptic treatment. (18)F-FDG PET/CT showed hypometabolism in the posterior associative cortex including the occipital cortex, suggesting Lewy body dementia, but (123)I-FP-CIT SPECT was normal and cardiac (123)I-MIBG imaging showed no signs of sympathetic denervation...
September 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27540430/cowden-syndrome-detected-by-fdg-pet-ct-in-an-endometrial-cancer-patient
#19
Yun Hee Kang, Hye Kyung Lee, Geon Park
Cowden syndrome (CS) is a rare autosomal dominant disorder characterized by multiple hamartomas in various tissues and cancers (breast, thyroid, and endometrium). We report CS of the esophagus and gastrointestinal tract that was incidentally detected by positron emission tomography/computed tomography (PET/CT) at postoperative surveillance in an endometrial cancer patient. PET/CT showed mildly increased FDG uptake along the entire esophagus and stomach. Upper GI endoscopy and histologic examination revealed glycogenic acanthosis of the esophagus and several hundred gastric polyps...
September 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27540429/the-relationship-between-estrogen-receptor-progesterone-receptor-and-human-epidermal-growth-factor-receptor-2-expression-of-breast-cancer-and-the-retention-index-in-dual-phase-18-f-fdg-pet-ct
#20
Hansol Moon, Woo Chul Noh, Hyun-Ah Kim, Eun-Kyu Kim, Ko Woon Park, Seung Sook Lee, Joon Ho Choi, Kyung Woo Han, Byung Hyun Byun, Ilhan Lim, Byung Il Kim, Chang Woon Choi, Sang Moo Lim
PURPOSE: This study investigates the correlation of retention index (RI) using the dual phase FDG PET/CT scan with the breast cancer biomarkers. METHODS: A total of 55 patients with breast cancer underwent dual phase FDG PET/CT scans (60 and 120 min after FDG injection) before treatment. SUVmax and SUVmean of the primary breast tumors were measured, then the percent change of SUVmax and SUVmean between the two scans were calculated, and denoted as RImax and RImean, respectively...
September 2016: Nuclear Medicine and Molecular Imaging
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