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Nuclear Medicine and Molecular Imaging

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https://www.readbyqxmd.com/read/29242737/radiation-induced-giant-cell-granuloma-mimicking-relapsed-hodgkin-lymphoma-at-fdg-pet-ct
#1
Hugo J A Adams, John M H de Klerk, Josien C Regelink, Ben G F Heggelman, Stefan V Dubois, Thomas C Kwee
A 22-year-old woman was diagnosed with intermediate risk stage II Hodgkin lymphoma and treated with three cycles of adriamycin, bleomycin, vinblastine, and dacarbazine (ABVD) followed by involved-field radiation therapy. A complete metabolic remission was achieved after two cycles of ABVD, which was maintained until three years after completion of treatment. Follow-up FDG-PET/CT four years after completion of treatment, however, showed a new FDG-avid (Deauville score of 4) lesion in the right scapula, suggesting relapsed disease...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242736/inguinal-herniation-of-urinary-bladder-on-f-18-sodium-fluoride-naf-pet-ct
#2
Sharjeel Usmani, Fahad Marafi, Najeeb Ahmed, Nafisah Kazem
Inguinal herniation of urinary bladder is uncommon and usually an incidental finding in asymptomatic patients. In some of these patients, residual urine volume and consequently, urinary tracer activity can be higher in the herniated bladder than the native bladder, in which case interpretation can be challenging on conventional planar imaging. We describe an interesting case of physiological activity in a herniated bladder simulating a "tear-drop". This case serves an important reminder that whilst F-18 NaF PET-CT has a similar spectrum of urinary activity to conventional bone scintigraphy; morphological correlation on hybrid imaging is invaluable in ensuring the physiological nature of uptake...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242735/microcalcified-hepatic-metastases-incidentally-detected-on-f-18-naf-pet-ct-in-a-patient-with-prostate-cancer
#3
Gul Ege Aktas, Ali Sarıkaya, Nuray Can, Selin Soyluoglu Demir
F-18 NaF PET/CT evaluation has gained importance in recent years. Achievements from F-18 NaF PET/CT are: higher sensitivity of positron imaging, higher target background ratio with higher tracer accumulation in bone hydroxyapatite and higher specificity through CT correlation. These properties have also given directions to new research fields based on imaging microcalcifications, very recently. A limited number of cases have reported the F-18 NaF uptake in macrocalcified soft tissue metastases. Although the presence of microcalcification was not proved; accumulation of F-18 NaF in the metastatic brain lesion with no visible calcification on the CT, in a patient with ductal breast carcinoma has also been reported...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242734/images-from-18f-dopa-scan-in-congenital-hyperinsulinism-not-always-a-clue-for-diagnosis
#4
Evelina Maines, Luca Giacomello, Mirko D'Onofrio, Matteo Salgarello, Rossella Gaudino, Laura Baggio, Andrea Bordugo
Congenital hyperinsulinism (CHI) is the most common cause of persistent hypoglycaemia in childhood (Horm Res 70:65-72, 2008; J Clin Endocr Metab 93:869-875, 2008). 18-Fluoro-L-dihydroxy-phenylalanine (18F-DOPA) positron emission tomography (PET) can detect areas of increased activity in the pancreas and may differentiate focal from diffuse CHI (J Clin Endocr Metab 93:869-875, 2008; Radiology 253:216-222, 2009). We here report the case of a girl who complained of recurrent episodes of severe hypoglycaemia despite previous partial pancreatectomy...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242733/68ga-psma-pet-ct-imaging-of-metastatic-adenoid-cystic-carcinoma
#5
Bart de Keizer, Gerard C Krijger, F Tessa Ververs, Robert J J van Es, Remco de Bree, Stefan Willems
A patient with a history of adenoid cystic carcinoma of the nasal cavity presented himself with bone pain and an elevated PSA level. On suspicion of metastatic prostate cancer a 68Ga-PSMA PET-CT was performed. The PET-CT showed numerous lung and non-sclerotic bone metastasis. Biopsy of a bone metastasis was performed and pathology showed adenoid cystic carcinoma instead of prostate cancer. Immunohistochemical PSMA staining of the primary tumour showed intense PSMA expression in adenoid cystic carcinoma tumour cells...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242732/usefulness-of-tc-99m-pertechnetate-spect-ct-in-the-diagnosis-of-testicular-infarction-after-inguinal-herniorrhaphy
#6
Myoung Hyoun Kim, Chang Guhn Kim, Soon-Ah Park, Dae-Weung Kim
A 77-year-old male underwent open repair for a right indirect inguinal hernia and complained of right scrotal pain on the third postoperative day. Color Doppler imaging revealed decreased blood flow with heterogeneous hypoechogenicity in the right testis. A Tc-99m pertechnetate testicular scan showed diffuse hyperemia and increased uptake in the right scrotum. Additional SPECT/CT revealed a photon defect in the right testicle with increased uptake in the peri-testicular area. A subsequent operation revealed a large hematoma in the right spermatic cord and consequent right testicular infarction, and right orchiectomy was performed...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242731/recurrent-follicular-dendritic-cell-sarcoma-of-the-parotid-gland-imaged-with-18f-fdg-pet-ct
#7
William Makis, E W Hudson, Brian Chiu
Follicular dendritic cell sarcoma (FDCS) is an extremely rare tumor with only 67 cases of head and neck FDCS reported in the literature. A 65-year-old female had a 6-cm follicular dendritic cell sarcoma resected from the left parotid gland with close margins. It recurred 1 year later as a 5-cm mass that was intensely [18F] fluoro-2-deoxy-D-glucose (18F-FDG) avid on positron emission tomography/computed tomography (PET/CT) and was re-excised. A follow-up PET/CT did not show any metastatic disease. The use of 18F-FDG PET/CT in the management of FDCS warrants further research...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242730/unusual-contralateral-axillary-lymph-node-metastasis-in-a-second-primary-breast-cancer-detected-by-fdg-pet-ct-and-lymphoscintigraphy
#8
Ji-Young Kim, Hyunjong Lee, Tae Sung Kim, Han-Sung Kang, Seok-Ki Kim
Contralateral metastatic axillary lymph nodes in a patient with breast cancer is a rare condition. Here, we present a 55-year-old woman with a second primary breast cancer. The patient underwent 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) for staging work-up. Additionally, preoperative lymphoscintigraphy was performed to detect sentinel lymph nodes. FDG PET/CT demonstrated increased FDG uptake in the left nipple and right axillary lymph nodes. Lymphoscintigraphy identified the right axillary lymph nodes which was consistent with the FDG PET/CT findings...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242729/altered-biodistribution-of-99mtc-dpd-on-bone-scan-after-intravenous-iron-supplement
#9
Eonwoo Shin, Minyoung Oh, Changhwan Sung, Ki-Hun Kim, Jin-Sook Ryu
We report a case with altered biodistribution of 99mTc-dicarboxypropane diphosphonate (99mTc-DPD) on whole body bone scan after intravenous iron supplement therapy. A 47-year-old male patient who had recently been detected with a hepatic mass suggestive of hepatocellular carcinoma underwent bone scan as staging work-up before surgery. Bone scan images at 3 h after injection of 99mTc-DPD demonstrated unusually increased blood pool activities in the heart, liver, and spleen with usual skeletal uptakes. The patient had been treated for severe anemia from hemorrhoid with two intravenous administration of ferric hydroxide carboxymaltose complex at approximately 22 h and 2 h prior to the 99mTc-DPD injection, which we consider as the most probable cause of altered biodistribution of 99mTc-DPD...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242728/quantitative-single-photon-emission-computed-tomography-computed-tomography-for-glomerular-filtration-rate-measurement
#10
Yeon-Koo Kang, Sohyun Park, Min Seok Suh, Seok-Soo Byun, Dong-Wan Chae, Won Woo Lee
Purpose: We propose a quantitative Tc-99m diethylenetriaminepentaacetic acid (DTPA) single-photon emission computed tomography/computed tomography (SPECT/CT) for glomerular filtration rate (GFR) measurement. Methods: Quantitative SPECT/CT data obtained at 2-3 min post-Tc-99m DTPA injection (370 MBq) were used to determine % injected doses (%IDs) for individual kidneys. The reproducibility of %ID measurement was tested and compared with planar scintigraphy. Cr-51 ethylenediaminetetraacetic acid (EDTA) GFR was used as reference standard...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242727/evaluation-of-cadmium-zinc-telluride-detector-based-single-photon-emission-computed-tomography-for-nuclear-cardiology-a-comparison-with-conventional-anger-single-photon-emission-computed-tomography
#11
Takanaga Niimi, Mamoru Nanasato, Mitsuo Sugimoto, Hisatoshi Maeda
Purpose: The differences in performance between the cadmium-zinc-telluride (CZT) camera or collimation systems and conventional Anger single-photon emission computed tomography (A-SPECT) remain insufficient from the viewpoint of the user. We evaluated the performance of the D-SPECT (Spectrum Dynamics, Israel) system to provide more information to the cardiologist or radiological technologist about its use in the clinical field. Materials and Methods: This study evaluated the performance of the D-SPECT system in terms of energy resolution, detector sensitivity, spatial resolution, modulation transfer function (MTF), and collimator resolution in comparison with that of A-SPECT (Bright-View, Philips, Japan)...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242726/relationship-between-dual-time-point-fdg-pet-ct-and-clinical-prognostic-indexes-in-patients-with-high-grade-lymphoma-a-pilot-study
#12
Do Hyoung Lim, Jai Hyuen Lee
Purpose: This study investigated the correlative relationship between metabolic parameters estimated from dual time point 2-deoxy-2-[18F] fluoro-D-glucose (18F-FDG) positron emission tomography/computerized tomography (PET/CT) and the clinical tools predicting the outcome of a lymphoma. We also measured metabolic and volumetric alterations between early and delayed 18F-FDG PET/CT in patients with high grade lymphoma (HGL). Methods: The samples were 122 lymph nodes and extralymphatic lesions from 26 patients diagnosed with HGL...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242725/68ga-psma-pet-ct-imaging-predicting-intraprostatic-tumor-extent-extracapsular-extension-and-seminal-vesicle-invasion-prior-to-radical-prostatectomy-in-patients-with-prostate-cancer
#13
Christoph-Alexander J von Klot, Axel S Merseburger, Alena Böker, Sebastian Schmuck, Tobias L Ross, Frank M Bengel, Markus A Kuczyk, Christoph Henkenberens, Hans Christiansen, Hans-Jürgen Wester, Wiebke Solass, Marcel Lafos, Thorsten Derlin
Purpose: 68Ga-labeled prostate-specific membrane antigen (PSMA) ligand positron emission tomography/computed tomography (PET/CT) has shown promising results in patients with biochemical recurrence after primary therapy for prostate cancer. In this study, we evaluated the usefulness of PSMA I&T (imaging and therapy) PET/CT prior to radical prostatectomy. Methods: The study population consisted of 21 patients with prostate cancer who underwent 68Ga-PSMA I&T PET/CT before either open or laparoscopic radical prostatectomy...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242724/longitudinal-decline-of-striatal-subregional-18f-fp-cit-uptake-in-parkinson-s-disease
#14
Changhwan Sung, Jai Hyuen Lee, Jungsu S Oh, Minyoung Oh, Sang Ju Lee, Seung Jun Oh, Sun Ju Chung, Chong Sik Lee, Jae Seung Kim
Purpose: Dopamine transporter imaging is suggested to be a useful imaging biomarker for Parkinson's disease (PD) progression and monitoring drug effects. We investigated the longitudinal decline characteristics of striatal [18F]FP-CIT uptake in PD. Methods: We retrospectively reviewed 35 PD patients and 9 non-PD patients. All patients underwent [18F]FP-CIT PET at the initial diagnosis and follow-up. PET images were spatially normalized and analyzed with eight striatal and one occipital VOI templates...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242723/spect-ct-in-the-treatment-of-differentiated-thyroid-cancer
#15
REVIEW
Sang-Woo Lee
Single-photon emission computed tomography with integrated computed tomography (SPECT/CT) systems has been applied in a wide range of clinical circumstances, and differentiated thyroid cancer (DTC) is one of the most important indications of SPECT/CT imaging. In the treatment of DTC, SPECT/CT images have been reported to have many advantages over conventional planar whole-body scintigraphy based on its precise localization and characterization of abnormal foci of radioactive iodine (RAI) accumulation, influencing the staging, risk stratification, and clinical management as well as reader confidence...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242722/recent-progress-in-the-development-of-tspo-pet-ligands-for-neuroinflammation-imaging-in-neurological-diseases
#16
REVIEW
Md Maqusood Alam, Jihye Lee, Sang-Yoon Lee
Neuroinflammation is heavily associated with various neurological diseases including Alzheimer's disease, Parkinson's disease, multiple sclerosis, and stroke. It is strongly characterized by the activation of microglia which can be visualized using position emission tomography (PET). Traditionally, translocator protein 18 kDa (TSPO) has been the preferred target for imaging the inflammatory progression of the microglial component. TSPO is expressed in the outer mitochondrial membrane and present in very low concentrations in the healthy human brain, but is markedly upregulated in response to brain injury and inflammation...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242721/message-from-the-president-elect-of-the-world-federation-of-nuclear-medicine-and-biology
#17
EDITORIAL
Dong Soo Lee
No abstract text is available yet for this article.
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28878858/-18-f-fdg-pet-ct-imaging-of-pulmonary-mucinous-cystadenocarcinoma-with-signet-ring-cells
#18
Alexandros Kalkanis, Leonidas Palaiodimos, Ifigeneia Klinaki, Dimitrios Karantanis, Dimitrios Kalkanis
A 63-year-old male with a recently diagnosed right lung lesion was referred for staging. F-FDG PET/CT scan revealed a hypodense, cystic-like mass in the right upper lung lobe, which demonstrated low, diffuse (18)F-FDG uptake, likely due to the presence of mucus, as well as intensely hypermetabolic right hilar and right paratracheal lymph nodes. Transbronchial biopsy revealed a primary pulmonary mucinous cystadenocarcinoma with the presence of signet ring cell carcinoma, a co-existence of two rare variants of lung adenocarcinoma...
September 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28878857/unusual-soft-tissue-uptake-of-f-18-sodium-fluoride-in-three-patients-undergoing-f-18-naf-pet-ct-bone-scans-for-prostate-cancer
#19
Andrew S Hawkins, Brandon A Howard
Three males aged 71 to 80 years with known stage IV metastatic prostate cancer underwent F-18 sodium fluoride (NaF) PET/CT to assess osseous metastatic disease burden and stability. In addition to F-18 NaF avid known osseous metastases, each patient also exhibited increased F-18 NaF activity in soft tissues. The first patient exhibited multiple F-18 NaF avid enlarged retroperitoneal and pelvic lymph nodes on consecutive PET/CT scans. The second patient demonstrated an F-18 NaF avid thyroid nodule on consecutive PET/CT scans...
September 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28878856/-68-gallium-arginine-glycine-aspartic-acid-and-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-in-chondroblastic-osteosarcoma-of-the-skull
#20
Akintunde Orunmuyi, Moshe Modiselle, Thabo Lengana, Thomas Ebenhan, Mariza Vorster, Mike Sathekge
We report the case of a 32 year-old male with Chondroblastic Osteosarcoma of the skull, which was imaged with both (18)[F]fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) and (68)Gallium-arginine-glycine-aspartic acid ((68)Ga-RGD) PET/CT. The (18)F-FDG PET/CT did not demonstrate the tumour, whereas the (68)Ga-RGD PET/CT clearly depicted a left-sided frontal tumour. (68)Ga-RGD PET/CT may be a clinically useful imaging modality for early detection of recurrent osteosarcoma, considering the limitations of (18)F-FDG PET in a setting of low glycolytic activity...
September 2017: Nuclear Medicine and Molecular Imaging
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