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Gallium 68

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https://www.readbyqxmd.com/read/28548372/initial-multicentre-experience-of-68-gallium-psma-pet-ct-guided-robot-assisted-salvage-lymphadenectomy-acceptable-safety-profile-but-oncological-benefit-appears-limited
#1
Amila Siriwardana, James Thompson, Pim J van Leeuwen, Shaela Doig, Anton Kalsbeek, Louise Emmett, Warick Delprado, David Wong, Hemamali Samaratunga, Anne-Maree Haynes, Geoff Coughlin, Phillip Stricker
OBJECTIVES: To evaluate the safety and short-term oncological outcomes for (68) Ga-PSMA PET/CT directed robot-assisted salvage node dissection (RASND) for prostate cancer oligometastatic nodal recurrence. MATERIALS AND METHODS: Between February 2014 and April 2016, 35 patients across two centres underwent RASND for (68) Ga-PSMA PET/CT detected oligometastatic nodal recurrence. RASND was performed by targeted pelvic dissection, unilateral extended pelvic template or bilateral extended pelvic template dissection, depending on previous pelvic treatment and extent/location of nodal disease...
May 26, 2017: BJU International
https://www.readbyqxmd.com/read/28533641/image-findings-of-a-rare-case-of-neuroendocrine-tumor-metastatic-to-orbital-extraocular-muscle-in-gallium-68-dotanoc-positron-emission-tomography-computed-tomography-and-therapy-with-lutetium-177-dotatate
#2
Koramadai Karuppusamy Kamaleshwaran, Jephy Joseph, Indra Upadhya, Ajit Sugunan Shinto
Metastatic tumor is one of several etiologies of space-occupying masses in the orbit that accounts for 1-13% of all orbital masses. In the adult patient population, breast cancer is the most common tumor to metastasize to the orbit, followed by metastasis from the lung, prostate, and gastrointestinal tract. Carcinoid tumors are rare neuroendocrine neoplasms derived from enterochromaffin cells, which are found primarily in the gastrointestinal tract and bronchial tree. Liver metastases are the classic presentation of distant disease...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28533638/clinical-utility-of-gallium-68-psma-pet-ct-scan-for-prostate-cancer
#3
Kumaraswamy G Kallur, Prashanth G Ramachandra, Krishnappa Rajkumar, Shivakumar S Swamy, Indiresh Desai, Raghavendra M Rao, Shekhar Gowda Patil, P S Sridhar, Nagaraj Madhusudhan, Raghunath S Krishnappa, Veerendra Bhadrasetty, Hemantha M Kumara, S D Santhosh, Basavalingaiah S Ajaikumar
BACKGROUND: Prostate cancer is biologically and clinically a heterogeneous disease that makes imaging evaluation challenging. One of the important challenges in this cancer is to detect recurrent disease. Biochemical response using Prostate Specific Antigen (PSA) and Imaging using several PET tracers have poor sensitivity and specificity. Therefore, we analyse the role of Ga68-PSMA (Prostate Specific Membrane Antigen) imaging in prostate cancer, which is a new PET tracer. METHODS: In this study, we evaluated PET scans of 262 patients with diagnosis of prostate cancer...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28511061/uptake-of-ga-curcumin-derivatives-in-different-cancer-cell-lines-toward-the-development-of-new-potential-68-ga-labelled-curcuminoids-based-radiotracers-for-tumour-imaging
#4
Sara Rubagotti, Stefania Croci, Erika Ferrari, Giulia Orteca, Michele Iori, Pier C Capponi, Annibale Versari, Mattia Asti
Thanks to the ability to suppress the proliferation and to kill tumour cells, several studies have shown the anti-cancer effects of curcumin (CUR) and its derivatives, i.e. diacetylcurcumin (DAC) and bis-dehydroxycurcumin (bDHC). This study is focused onto the development of curcuminoid complexes with gallium-68 employed as potential new radio-labelled probes to detect neoplastic tissues through imaging techniques such as positron emission tomography. To this purpose, the uptake of three Ga-curcuminoid complexes, namely Ga(CUR)2(+), Ga(DAC)2(+), Ga(bDHC)2(+), by various tumour cell lines was compared with the uptake of the same compounds by normal human lymphocytes by flow cytometry using the intrinsic fluorescence of the curcuminoids...
May 10, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28474140/comparison-of-psma-hbed-and-psma-i-t-as-diagnostic-agents-in-prostate-carcinoma
#5
Michael McCarthy, Tiffany Langton, Divesh Kumar, Andrew Campbell
PURPOSE: Gallium(68)-labelled prostate-specific membrane antigen (PSMA) radiopharmaceuticals can be used to detect prostate cancer (PCa) cells due the their over expression of PSMA. The (68)Ga HBED-PSMA (PSMA-HBED) ligand has been most widely used and can be considered the current gold standard agent. Further PSMA ligands based on the DOTAGA and DOTA conjugates have more recently been developed. These agents (PSMA-I&T and PSMA-617) have potential theranostic capabilities as they can be conjugated with therapeutic radioisotopes...
May 4, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28462989/developing-targeted-hybrid-imaging-probes-by-chelator-scaffolding
#6
Dominik Summer, Leo Grossrubatscher, Milos Petrik, Tereza Michalcikova, Zbynek Novy, Christine Rangger, Maximilian Klingler, Elisabeth von Guggenberg, Roland Haubner, Piriya Kaeopookum, Hubertus Haas, Clemens Decristoforo
Positron emission tomography (PET) as well as optical imaging (OI) with peptide receptor targeting probes have proven their value for oncological applications but also show restrictions depending on the clinical field of interest. Therefore the combination of both methods, particularly in a single molecule, could improve versatility in clinical routine. This proof of principle study aims to show that a chelator, Fusarinine C (FSC), can be utilized as scaffold for novel dimeric dual-modality imaging agents. Two targeting vectors (a minigastrin analogue (MG11) targeting cholecystokinin-2 receptor overexpression (CCK2R) or integrin V3 targeting cyclic pentapeptides (RGD)) and a near-infrared fluorophore (Sulfo-Cyanine7) were conjugated to FSC...
May 2, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28462171/multiple-recurrent-paraganglioma-in-a-pediatric-patient-with-germline-sdh-b-mutation
#7
Aidan McGowan, Julie Y An, Sally Tanakchi, Mahir Maruf, Akhil Muthigi, Arvin George, Daniel Su, Maria J Merino, W Marston Linehan, Shawna L Boyle, Adam R Metwalli
Magnetic Resonance Imaging (MRI) and fluoro-2-deoxy-d-glucose positron emission tomography (FDG-PET) are recognized approaches for locating paragangliomas. Recently, gallium-68 DOTA-octreotate (DOTATATE) scans have shown promise detecting neuroendocrine tumors missed by FDG-PET and MRI. 13-year-old male with SDH-B mutation presented with symptoms of paraganglioma and elevated catecholamines. MRI did not demonstrate the T2 hyper intense signal typical of paraganglioma and pheochromocytoma; FDG-PET scan did not reveal increased foci of uptake...
July 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28458734/designing-a-new-molecular-probe-the-potential-role-for-tilmanocept-lymphoseek-%C3%A2-in-the-assessment-of-patients-with-painful-hip-and-knee-joint-prostheses
#8
O O Adesanya, C E Hutchinson
BACKGROUND: There is a long history of nuclear medicine developments in orthopaedics beginning in the early 20(th) century. Technetium-99m ((99m)Tc) has a short half-life of six hours, emits 140 keV gamma rays and is the most widely used isotope, imaged with the Anger (gamma) camera. Gamma image quality and test sensitivity in painful prosthetic joints can be improved with single photon emission computed tomography (SPECT) and SPECT/CT. Positron Emission Tomography-Computed Tomography (PET-CT) with Sodium Fluoride ((18)F-NaF) and (18)Fluorine-fluorodeoxyglucose ((18)F-FDG) PET have promising and limited roles respectively in the investigation of painful prosthetic joints...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28408526/-68-ga-or-18-f-for-prostate-cancer-imaging
#9
Claudia Kesch, Clemens Kratochwil, Walter Mier, Klaus Kopka, Frederik L Giesel
No abstract text is available yet for this article.
May 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28385306/detection-of-atherosclerotic-inflammation-by-68-ga-dotatate-pet-compared-to-18-f-fdg-pet-imaging
#10
Jason M Tarkin, Francis R Joshi, Nicholas R Evans, Mohammed M Chowdhury, Nichola L Figg, Aarti V Shah, Lakshi T Starks, Abel Martin-Garrido, Roido Manavaki, Emma Yu, Rhoda E Kuc, Luigi Grassi, Roman Kreuzhuber, Myrto A Kostadima, Mattia Frontini, Peter J Kirkpatrick, Patrick A Coughlin, Deepa Gopalan, Tim D Fryer, John R Buscombe, Ashley M Groves, Willem H Ouwehand, Martin R Bennett, Elizabeth A Warburton, Anthony P Davenport, James H F Rudd
BACKGROUND: Inflammation drives atherosclerotic plaque rupture. Although inflammation can be measured using fluorine-18-labeled fluorodeoxyglucose positron emission tomography ([(18)F]FDG PET), [(18)F]FDG lacks cell specificity, and coronary imaging is unreliable because of myocardial spillover. OBJECTIVES: This study tested the efficacy of gallium-68-labeled DOTATATE ((68)Ga-DOTATATE), a somatostatin receptor subtype-2 (SST2)-binding PET tracer, for imaging atherosclerotic inflammation...
April 11, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28349676/flourodeoxyglucose-positron-emission-tomography-scan-may-be-helpful-in-the-case-of-ductal-variant-prostate-cancer-when-prostate-specific-membrane-antigen-ligand-positron-emission-tomography-scan-is-negative
#11
Louise M McEwan, David Wong, John Yaxley
Gallium-68 prostate specific membrane antigen ligand (Ga-68 PSMA) positron emission tomography/computed tomography (PET/CT) scanning is emerging as a useful imaging modality for the staging of suspected and known recurrent or metastatic prostate cancer and in staging of newly diagnosed higher grade prostate cancer. However, we have observed at our institution that in some cases of the more aggressive ductal variant, Ga-68 PSMA uptake has sometimes been poor compared with prominent 18-flourodeoxyglucose (F-18 FDG) avidity seen in F-18 FDG PET/CT, which would suggest that FDG PET/CT scans are important in staging of ductal pattern prostate cancer...
March 28, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28332878/three-diagnoses-on-one-gallium-68-dotatate-scan
#12
Run Yu, Andrew Quon, J Randolph Hecht
No abstract text is available yet for this article.
March 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28328161/synthesis-in-vitro-evaluation-and-68-ga-radiolabeling-of-cdp1-toward-pet-ct-imaging-of-bacterial-infection
#13
Jyotibon Dutta, Sooraj Baijnath, Anou M Somboro, Savania Nagiah, Fernando Albericio, Beatriz G de la Torre, Biljana Marjanovic-Painter, Jan Rijn Zeevaart, Mike Sathekge, Hendrik G Kruger, Anil Chuturgoon, Tricia Naicker, Thomas Ebenhan, Thavendran Govender
Bacterial infections are a major concern in the human health sector due to poor diagnosis and development of multidrug-resistant strains. PET/CT provides a means for the non-invasive detection and localization of the infectious foci; however, the radiotracers available are either cumbersome to prepare or their exact contribution toward the imaging is not yet established. Human antimicrobial peptides are of interest for development as PET radiotracers as they are an integral component of the immune system, non-immunogenic toward the recipient, and show selectivity toward pathogens such as bacteria...
March 22, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28317154/development-of-a-novel-fibrin-specific-pet-tracer
#14
Tiemen van Mourik, Michael Claesener, Klaas Nicolay, Holger Gruell
Fibrin deposition is observed in several diseases such as atherosclerosis, deep vein thrombosis and also tumors, where it contributes to the formation of mature tumor stroma. The aim of this study was to develop a gallium-labeled peptide tracer based on the fibrin targeting peptide Epep for PET imaging of fibrin deposition. For this purpose, the peptide Epep was modified with a NOTA moiety for radiolabeling with (67) Ga and (68) Ga and compared with the earlier validated (111) In-DOTA-Epep tracer. In vitro binding assays of (67) Ga-NOTA-Epep displayed an enhanced retention as compared to previously published data showing binding of (111) In-DOTA-Epep to human (84...
March 20, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28316937/metastasectomy-of-abdominal-wall-lesions-due-to-prostate-cancer-detected-through-pet-ct-gallium-68-pmsa-first-case-report
#15
Claudia Ochoa, Angie Ramirez, Rodolfo Varela, Fabian Godoy, Rafael Vargas, Jorge Forero, Andres Rojas, Carmen Roa, Carlos Céspedes, Jose Ramos, Marino Cabrera, Andres Calderon
Introducing the topic of abdominal wall metastasis secondary to prostate cancer with a reminder of the disease's rarity, being the first published case. This article is about a 66 year old patient diagnosed with prostate cancer [cT2aNxMx iPSA: 5,6 ng/ml Gleason 3+3, (Grade 1 Group)], treated with radical prostatectomy as well as accompanied with amplified pelvic lymphadenectomy, who subsequently presented metastatic lesions to the abdominal wall diagnosed with PET/CT Gallium 68-PMSA technique and treated with abdominal metastasectomy with adequate short term results...
May 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28299924/improvement-of-electrical-characteristics-and-stability-of-amorphous-indium-gallium-zinc-oxide-thin-film-transistors-using-nitrocellulose-passivation-layer
#16
Kwan Yup Shin, Young Jun Tak, Won-Gi Kim, Seonghwan Hong, Hyun Jae Kim
In this research, nitrocellulose is proposed as a new material for the passivation layers of amorphous indium gallium zinc oxide thin film transistors (a-IGZO TFTs). The a-IGZO TFTs with nitrocellulose passivation layers (NC-PVLs) demonstrate improved electrical characteristics and stability. The a-IGZO TFTs with NC-PVLs exhibit improvements in field-effect mobility (μFE) from 11.72 ± 1.14 to 20.68 ± 1.94 cm(2)/(V s), threshold voltage (Vth) from 1.85 ± 1.19 to 0.56 ± 0.35 V, and on/off current ratio (Ion/off) from (5...
April 4, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28267455/gallium-68-prostate-specific-membrane-antigen-pet-imaging
#17
REVIEW
Michael S Hofman, Amir Iravani
The role of gallium-68 ((68)Ga) prostate-specific membrane antigen (PSMA) PET imaging is evolving and finding its place in the imaging armamentarium for prostate cancer (PCa). Despite the progress of conventional imaging strategies, significant limitations remain, including identification of small-volume disease and assessment of bone. Clinical studies have demonstrated that (68)Ga-PSMA is a promising tracer for detection of PCa metastases, even in patients with low prostate-specific antigen. To provide an accurate interpretation of (68)Ga-PSMA PET/computed tomography, nuclear medicine specialists and radiologists should be familiar with physiologic (68)Ga-PSMA uptake, common variants, patterns of locoregional and distant spread of PCa, and inherent pitfalls...
April 2017: PET Clinics
https://www.readbyqxmd.com/read/28267450/imaging-of-prostate-cancer-using-gallium-68-labeled-bombesin
#18
REVIEW
Ida Sonni, Lucia Baratto, Andrei Iagaru
Nuclear medicine can play an important role in evaluating prostate cancer combining anatomical and functional information with hybrid techniques. Various PET radiopharmaceuticals have been used for targeting specific biological markers in prostate cancer. Research is ideally oriented towards the development of radiopharmaceuticals targeting antigens overexpressed in prostate cancer, as opposed to normal prostate tissue. In this regard, gastrin-releasing peptide receptors (GRPR) are excellent candidates. Bombesin analogues targeting the GRPR have been investigated...
April 2017: PET Clinics
https://www.readbyqxmd.com/read/28216940/epididymal-metastasis-from-prostate-adenocarcinoma-an-unusual-and-challenging-diagnosis-suspected-in-gallium-68-prostate-specific-membrane-antigen-positron-emission-tomography-computed-tomography-and-histologically-confirmed
#19
Sofia Santos-Lopes, João Lobo, Rui Henrique, Jorge Oliveira
A few cases of prostate adenocarcinoma (PCa) metastases to the epididymis have been documented in literature. We report a case of a 69-year-old man with a left epididymal metastasis, 6 years after radical prostatectomy and adjuvant radiation therapy for PCa. Although he developed biochemical recurrence, only gallium-68 prostate-specific membrane antigen-positron emission tomography/computed tomography revealed high uptake in the left testis and retrovesical space. An unrecognized painless firm nodule was palpable on the left epididymis...
January 2017: Urology Annals
https://www.readbyqxmd.com/read/28197764/new-frontiers-in-prostate-cancer-imaging-clinical-utility-of-prostate-specific-membrane-antigen-positron-emission-tomography
#20
REVIEW
Asim Afaq, Deepak Batura, Jamshed Bomanji
Prostate-specific membrane antigen positron emission tomography (PSMA PET) is a relatively new method of imaging prostate cancer that increases diagnostic accuracy in detecting and guiding management in various stages of the disease pathway. Gallium-68-labelled PSMA PET has increased the sensitivity of detection of disease recurrence at low PSA levels, thus allowing an optimal window for salvage treatment. Apart from its use in disease recurrence, PSMA PET has the potential for increasing sensitivity and specificity for primary tumour localisation and in detecting lymph node disease, leading to a more accurate initial staging of the condition...
February 14, 2017: International Urology and Nephrology
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