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Nuclear Medicine Communications

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https://www.readbyqxmd.com/read/28704341/uptake-of-the-prostate-specific-membrane-antigen-targeted-pet-radiotracer-18f-dcfpyl-in-elastofibroma-dorsi
#1
Michael A Gorin, Wael Marashdeh, Ashley E Ross, Mohammad E Allaf, Kenneth J Pienta, Martin G Pomper, Steven P Rowe
OBJECTIVE: PET imaging using radiotracers that target prostate-specific membrane antigen (PSMA) are increasingly being used in the evaluation of men with prostate cancer (PCa). It is therefore of increasing importance for imaging specialists to recognize potential pitfalls of this novel imaging technique. In this report, we describe a series of benign elastofibroma dorsi with uptake of the PSMA-targeted PET radiotracer ¹⁸F-DCFPyL. PATIENTS AND METHODS: We retrospectively analyzed the imaging data of 75 men with PCa who were consecutively imaged with ¹⁸F-DCFPyL PET/CT...
July 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28727659/patient-release-criteria-following-radioactive-iodine-131-treatment-in-the-light-of-international-practice-where-does-south-africa-fit-in
#2
Modisenyane S Mongane, William I D Rae
The release from hospital of patients treated with radioactive iodine-131 (I) remains a controversial issue as a result of the range of guidelines implemented by national regulatory bodies responsible for radiation protection in various countries worldwide. The aim of this study was to review and analyse the literature on patient release criteria (PRC) applied internationally in an attempt to achieve a justifiable approach to setting equivalent criteria in South Africa. In 2016, the South African Department of Health, Directorate: Radiation Control added conditions (numbers 50 and 90), to licences to use radioactive nuclides...
July 19, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28727658/white-cell-and-marrow-imaging-subtracting-uncertainty
#3
Chelsey Turner, Alison A Bolster, Carolyn L Paterson, Hugh J Wallace
A subtraction method for assessments of dual-isotope indium-111 (In)-labelled white cell and Tc-nanocoll was proposed, and following a pilot study was introduced in routine service to improve the confidence of reporters. This technical note describes a simple technique to produce subtraction images from routinely acquired images to investigate and exclude post joint replacement infection. Labelled leucocytes (with In) show areas of increased white cell accumulation, whereas Tc-nanocoll images show bone marrow distribution...
July 19, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28723716/refining-the-management-of-patients-with-hepatocellular-carcinoma-integrating-11c-choline-pet-ct-scan-into-the-multidisciplinary-team-discussion
#4
Ezio Lanza, Matteo Donadon, Paolo Felisaz, Antonio Mimmo, Arturo Chiti, Guido Torzilli, Luca Balzarini, Egesta Lopci
OBJECTIVE: The aim of this study was to report the impact of C-choline PET/CT on the management of patients with hepatocellular carcinoma (HCC) and incorporate into a refined algorithm combining diagnostic imaging and multidisciplinary team (MDT) discussion. PATIENTS AND METHODS: From February 2010 to February 2016, the charts of all patients discussed in the liver MDT were revised. Suspected or confirmed HCC lesions or Barcelona Clinic Liver Cancer stages A, B or C with a C-choline PET/CT performed in our hospital were included in the analyses...
July 18, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28723715/novel-weight-based-dose-threshold-for-18f-naf-pet-ct-imaging-using-advanced-pet-ct-systems-a-potential-tool-for-reducing-radiation-burden
#5
Fahad Marafi, Abdulreda Esmail, Rashid Rasheed, Fareeda Alkandari, Sharjeel Usmani
BACKGROUND: Fluorine-18-sodium fluoride (F-NaF) PET/CT is an important tool for detecting and evaluating metastatic bone cancer. Besides traditional dose metrics, recent methods such as real-time dose mapping, dose calculation from DICOM information, and their relevance to entrance skin exposure are currently in use to reduce the radiation burden. In this study, we have analyzed the data of 1062 patients retrospectively to evaluate patterns of absorbed dose for institutional weight-based dose protocol as compared with fixed dose method guidelines of Society of Nuclear Medicine and Molecular Imaging (SNMMI)...
July 18, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28719405/clinical-outcomes-1-year-after-empiric-131i-therapy-for-hyperthyroid-disorders-real-life-experience-and-predictive-factors-of-functional-response
#6
Lavinia Vija Racaru, Charlotte Fontan, Mathilde Bauriaud-Mallet, Séverine Brillouet, Olivier Caselles, Slimane Zerdoud, Delphine Bastié, Delphine Vallot, Philippe Caron, Manuel Bardiès, Frederic Courbon
: Radioiodine is a therapeutic option in Europe for Graves' disease (GD) and toxic multinodular goiter (MNG). PURPOSE: To compare empiric and calculated I activities using 2013 EANM recommendations. To look for predictive factors of therapeutic response to an empiric activity of I. To assess clinical situations favoring calculated treatment modalities. PATIENTS AND METHODS: Prospective monocentric study of clinical outcomes at 1 year follow-up in 86 patients with GD and MNG who received empiric I therapeutic activities (348-939 MBq)...
July 17, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28704342/a-novel-compact-small-field-of-view-hybrid-gamma-camera-first-clinical-results
#7
Aik H Ng, Patricia E Blackshaw, Mohammed S Alqahtani, Layal K Jambi, Sarah L Bugby, John E Lees, Alan C Perkins
INTRODUCTION: Hybrid imaging has proven to be a major innovation in nuclear medicine, allowing the fusion of functional information with anatomical detail. In the past, the use of hybrid imaging such as PET-CT, PET-MRI and SPECT-CT has been of great clinical benefit; however, these scanners are relatively large and bulky. We have developed and investigated the clinical application of a compact small field of view hybrid gamma camera (HGC) that is suitable for small-organ imaging at the patient bedside...
July 12, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28704340/uptake-in-the-pancreatic-uncinate-process-on-the-111in-octreotide-scintigraphy-how-to-distinguish-physiological-from-pathological-uptake
#8
Amel Ait Boudaoud, Bruno Verges, Jean M Petit, Sopio Tatulashvili, Alexandre Cochet, Olivier Humbert
BACKGROUND: The aim of this study was to assess the relevance of physiological In-octreotide uptake in the head of pancreas and to establish its imaging features in comparison with pathological uptake in patients with neuroendocrine tumors (NET). PATIENTS AND METHODS: We retrospectively reviewed all patients that underwent In-octreotide single-photon emission tomography (SPECT) scintigraphy in our institution. Only patients with an isolated uptake in the head of the pancreas were included...
July 12, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28704339/quantitative-analysis-of-normal-and-pathologic-adrenal-glands-with-18f-fdopa-pet-ct-focus-on-pheochromocytomas
#9
Aurélie Moreau, Anne L Giraudet, David Kryza, Françoise Borson-Chazot, Claire Bournaud, Thomas Mognetti, Jean-Christophe Lifante, Patrick Combemale, Francesco Giammarile, Claire Houzard
INTRODUCTION: Many studies have reported the high performance of 6-fluorine-18-fluorodihydroxyphenilalanine (F-FDOPA) PET/CT in the diagnosis of pheochromocytomas but nobody seems to have investigated physiological and pathological adrenal glands from a quantitative point of view. The purpose of the present study was to assess the quantitative F-FDOPA uptake of normal and pathologic adrenal glands and to establish thresholds to characterize pheochromocytomas. We were especially interested in characterizing the remaining adrenal glands captation after an adrenalectomy...
July 12, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28704338/analysis-of-metastatic-involvement-in-bone-using-anatomical-and-functional-information-from-18f-fdg-pet-ct
#10
Omer Demirkaya, Mohammed AlQahtani, Abdulaziz Alsugair, Omer Aras, Mohei-Eldin Abouzied
PURPOSE: Although the overall incidence of bone metastasis is not known, over one-half of the people who die of cancer in the USA every year are thought to have bone involvement. In this study we have developed a method to quantify the metabolic and anatomic changes induced by different types of bone metastases in cancer patients using PET/CT images. PATIENTS AND MATERIALS: Seventy-three cancer patients with no previous history of chemotherapy or radiotherapy who had definite bone metastases documented by PET/CT and other conventional modalities were selected for this study...
July 12, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28692495/the-clinical-significance-of-technetium-99m-methylene-diphosphonate-bone-scintigraphy-findings-in-patients-with-rhabdomyolysis
#11
Jeong Won Lee, Eun-Young Lee, Sae-Yong Hong, Ik Dong Yoo, Sang Mi Lee
OBJECTIVE: This study evaluated the relationship between bone scintigraphy finding and clinical factors and assessed the prognostic value of bone scintigraphy finding in patients with rhabdomyolysis. PATIENTS AND METHODS: We retrospectively enrolled 143 patients with rhabdomyolysis who had undergone bone scintigraphy. Bone scintigraphy was classified into three groups: no or equivocal soft tissue uptake, a localized uptake, and a diffuse uptake. The relationship of bone scintigraphy findings with clinical factors was evaluated...
July 7, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28692494/diagnostic-importance-of-18f-fdg-pet-ct-parameters-and-total-lesion-glycolysis-in-differentiating-between-benign-and-malignant-adrenal-lesions
#12
Esra Ciftci, Bulent Turgut, Ali Cakmakcilar, Seyit A Erturk
PURPOSE: Benign adrenal lesions are prevalent in oncologic imaging and make metastatic disease diagnoses difficult. This study evaluates the diagnostic importance of metabolic, volumetric, and metabolovolumetric parameters measured by fluorine-18-fluorodeoxyglucose (F-FDG) PET/CT in differentiating between benign and malignant adrenal lesions in cancer patients. PATIENTS AND METHODS: In this retrospective study, we evaluated F-FDG PET/CT parameters of adrenal lesions of follow-up cancer patients referred to our clinic between January 2012 and November 2016...
July 7, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28692493/the-application-of-technetium-99m-red-blood-cell-scintigraphy-in-the-diagnosis-of-orbital-cavernous-hemangioma
#13
Hua Dong, Zuncheng Zhang, Yongtao Guo, Hong Zhang, Wengui Xu
OBJECTIVE: The purpose of this study was to evaluate the clinical value of technetium-99m-red blood cell (Tc-RBC) scintigraphy in the diagnosis of orbital cavernous hemangioma (OCH). PATIENTS AND METHODS: Forty-one patients with pathologically confirmed orbital mass, of which 10 were OCH, underwent Tc-RBC scintigraphy in this study. The scanning procedure included an initial perfusion phase, followed by an early and a delayed blood pool phase. All patients underwent ultrasonography and computed tomography (CT), and 15 patients also underwent MRI...
July 7, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28692492/criteria-for-the-addition-of-prone-imaging-to-myocardial-perfusion-single-photon-emission-computed-tomography-for-inferior-wall
#14
Koji Nakaya, Masahisa Onoguchi, Yoshihiro Nishimura, Keisuke Kiso, Hideki Otsuka, Yoshifumi Nouno, Takayuki Shibutani, Eisuke Yasuda
OBJECTIVE: Myocardial perfusion single-photon emission computed tomography (SPECT) is occasionally suspected to generate images that represent either ischemia or infarction for the inferior wall [right coronary artery (RCA) disease] or attenuation artifacts because of the diaphragm. We often encounter this. The application of prone imaging is advantageous in the differentiation of RCA disease because of attenuation artifacts. If decreased accumulation of radioisotopes is observed at the site with either RCA disease or attenuation artifacts, then a criterion that enables the addition of prone imaging should be implemented...
July 7, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28591006/assessment-of-functional-liver-reserve-old-and-new-in-99mtc-sulfur-colloid-scintigraphy
#15
Manuela M Matesan, Stephen R Bowen, Tobias R Chapman, Robert S Miyaoka, James W Velez, Michele F Wanner, Matthew J Nyflot, Smith Apisarnthanarax, Hubert J Vesselle
PURPOSE: A semiquantitative assessment of hepatic reticuloendothelial system function using colloidal particles scintigraphy has been proposed previously as a surrogate for liver function evaluation. In this article, we present an updated method for the overall assessment of technetium-99m (Tc)-sulfur colloid (SC) biodistribution that combines information from planar and attenuation-corrected Tc-SC single-photon emission computed tomography (SPECT) images. The imaging protocol described here was developed as an easy-to-implement method to assess overall and regional liver function changes associated with chronic liver disease...
June 6, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28562377/the-value-of-18f-dopa-pet-ct-in-patients-with-medullary-thyroid-carcinoma-and-increased-calcitonin-values
#16
Anja T Golubić, Eva Pasini Nemir, Marijan Žuvić, Andrea Mutvar, Sanja Kusačić Kuna, Marija Despot, Tatjana Samardžić, Dražen Huić
AIM: The aim of this prospective observational study was to examine the benefit of a fluorine-18-L-dihydroxyphenylalanine (F-DOPA) PET/computed tomography (CT) scan in patients with medullary thyroid carcinoma (MTC) in terms of increased calcitonin levels. PATIENTS AND METHODS: Twenty-eight MTC patients after initial total thyreoidectomy with increasing follow-up calcitonin levels suggestive for active disease after negative conventional imaging findings (neck ultrasound or thorax, abdomen, pelvis multislice computed tomography as standard imaging) were scanned using F-DOPA PET/CT from November 2012 to April 2016...
May 30, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28538080/formulation-and-characterization-of-lutetium-177-labeled-stannous-tin-colloid-for-radiosynovectomy
#17
Geetanjali Arora, Manoranjan Singh, Pragati Jha, Sarthak Tripathy, Chandrasekhar Bal, Anirban Mukherjee, Shamim A Shamim
OBJECTIVE: Easy large-scale production, easy availability, cost-effectiveness, long half-life, and favorable radiation characteristics have made lutetium-177 (Lu) a preferred radionuclide for use in therapy. Lutetium-177-labeled stannous (Lu-Sn) colloid particles were formulated for application in radiosynovectomy, followed by in-vitro and in-vivo characterization. METHODS: Stannous chloride (SnCl2) solution and Lu were heated together, the pH was adjusted, and the particles were recovered by centrifugation...
May 19, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28509766/brown-adipose-tissue-detected-by-pet-ct-imaging-is-associated-with-less-central-obesity
#18
Aileen L Green, Ulas Bagci, Sarfaraz Hussein, Patrick V Kelly, Razi Muzaffar, Brent A Neuschwander-Tetri, Medhat M Osman
PURPOSE: This retrospective review was performed to determine whether patients with brown adipose tissue (BAT) detected by fluorine-18-fluorodeoxyglucose (F-FDG) PET/computed tomography (CT) imaging have less central obesity than BMI-matched control patients without detectable BAT. PATIENTS AND METHODS: Thirty-seven adult oncology patients with F-FDG BAT uptake were retrospectively identified from PET/CT studies from 2011 to 2013. The control cohort consisted of 74 adult oncology patients without detectable F-FDG BAT uptake matched for BMI/sex/season...
May 15, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28489691/optimal-injected-dose-ratio-of-a-very-rapid-1-day-protocol-of-myocardial-perfusion-imaging-with-cadmium-zinc-telluride-single-photon-emission-tomography-simulation-and-phantom-study
#19
Minako Shinjyo, Maho Naniwa, Narumi Kubo, Yoshihiro Nishimura, Keisuke Kiso, Kazuki Fukuchi
OBJECTIVE: Cadmium-zinc-telluride detectors enable shorter acquisition durations in myocardial perfusion imaging (MPI), but the time interval of sequential scanning is still unchanged in clinical practice. We designed a very rapid 1-day protocol of MPI using cadmium-zinc-telluride single-photon emission tomography and evaluated the optimal dose ratio between two scanning acquisitions by means of simulations and phantom experiments. METHODS: We intended to perform a 1-day MPI within 140 min and simulate radioactivities in the second scan under various injected dose ratios...
May 9, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28489689/half-body-single-photon-emission-computed-tomography-with-resolution-recovery-for-the-evaluation-of-metastatic-bone-disease-implementation-into-routine-clinical-service
#20
Michael B Hanney, Philip G Hillel, Andrew D Scott, Eleanor Lorenz
OBJECTIVES: Typically, scintigraphic evaluation of metastatic bone disease uses planar imaging. Although single photon emission computed tomography (SPECT) offers increased clinical utility, the acquisition time necessary to cover the required scan range (at our centre, skull vertex to mid-femur) has made its use in place of planar imaging impracticable. Recently, reconstruction with resolution recovery (RR) has allowed SPECT acquisition times to be shortened while maintaining acceptable image quality...
May 9, 2017: Nuclear Medicine Communications
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