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https://www.readbyqxmd.com/read/29179894/-preventative-and-therapeutic-relapse-strategies-after-allogeneic-hematopoietic-stem-cell-transplantation-guidelines-from-the-francophone-society-of-bone-marrow-transplantation-and-cellular-therapy-sfgm-tc
#1
Nabil Yafour, Florence Beckerich, Claude Eric Bulabois, Patrice Chevallier, Étienne Daguindau, Cécile Dumesnil, Thierry Guillaume, Anne Huynh, Stavroula Masouridi Levrat, Anne-Lise Menard, Mauricette Michallet, Cécile Pautas, Xavier Poiré, Aurelie Ravinet, Ibrahim Yakoub-Agha, Ali Bazarbachi
Disease relapse remains the first cause of mortality of hematological malignancies after allogeneic hematopoietic stem cell transplantation (allo-HCT). The risk of recurrence is elevated in patients with high-risk cytogenetic or molecular abnormalities, as well as when allo-HCT is performed in patients with refractory disease or with persistent molecular or radiological (PET-CT scan) residual disease. Within the frame of the 7th annual workshops of the francophone society for bone marrow transplantation and cellular therapy, the working group reviewed the literature in order to elaborate unified guidelines for the prevention and treatment of relapse after allo-HCT...
November 24, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/29166330/hepatic-falciform-artery-demonstrating-maa-uptake-in-the-anterior-abdomen-prior-to-embolization
#2
Dhruv Patel, Ken Le, Joga Chaganti, Robert Mansberg
A 58-year-old man was referred for selective internal radiation therapy for locally advanced unresectable hepatocellular carcinoma. Intra-arterial particle perfusion scintigraphy was performed with SPECT/CT following intra-arterial injection of Tc macroaggregated albumin. Angiography demonstrated a hepatic falciform artery, a feeding artery of the ligamentum teres, whereas scintigraphy demonstrated tracer uptake in the mid-anterior abdominal wall. The hepatic falciform artery was subsequently embolized and the repeat angiogram confirmed successful occlusion...
November 22, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29125999/preclinical-evaluation-of-heat-denatured-18-f-fdg-labeled-red-blood-cells-for-detecting-splenic-tissues-with-pet-in-rats
#3
Yohji Matsusaka, Tadaki Nakahara, Kazuhiro Takahashi, Yu Iwabuchi, Yuji Ogata, Chiyoko Nishime, Mayumi Kajimura, Masahiro Jinzaki
INTRODUCTION: Heat-denatured (99m)Tc-labeled red blood cells (RBCs) are used for detecting splenic tissues with scintigraphy. The present study aimed to evaluate the feasibility of using heat-denatured [(18)F]fluorodeoxyglucose ([(18)F]FDG)-labeled RBCs in detecting splenic tissues using positron emission tomography (PET) in rats. METHODS: RBCs were washed with phosphate buffered saline, labeled with [(18)F]FDG at 38°C, and heat-denatured at 50°C for 15 min. In vitro stability was assessed by measuring extracellular radioactivity during the 0-180 min incubation at 37°C...
September 18, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29123014/positron-emission-tomography-using-a-grpr-antagonist-68ga-rm26-in-healthy-volunteers-and-prostate-cancer-patients
#4
Jingjing Zhang, Gang Niu, Xingrong Fan, Lixin Lang, Guozhu Hou, Libo Chen, Huanwen Wu, Zhaohui Zhu, Fang Li, Xiaoyuan Chen
This study was designed to study the safety, biodistribution, radiation dosimetry of a gastrin-releasing peptide receptor (GRPR) antagonist positron emission tomography (PET) tracer 68Ga-RM26, to assess its clinical diagnostic value in prostate cancer patients, and to perform a direct comparison between GRPR antagonist 68Ga-RM26 and agonist 68Ga-BBN. Methods: Five healthy volunteers were enrolled to validate the safety of 68Ga-RM26 and calculate dosimetry. A total of 28 patients with prostate cancer (17 newly diagnosed and 11 post therapy) were recruited with written informed consent...
November 9, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29104950/-89-zr-cobalamin-pet-tracer-synthesis-cellular-uptake-and-use-for-tumor-imaging
#5
Akhila N W Kuda-Wedagedara, Jayme L Workinger, Ebba Nexo, Robert P Doyle, Nerissa Viola-Villegas
Vitamin B12, or cobalamin (Cbl), is an essential nutrient. Acquisition, transport, and cellular internalization of Cbl are dependent on specific binding proteins and associated receptors. The circulating transport protein transcobalamin (TC) promotes cellular uptake via binding to specific receptors such as CD320, a receptor upregulated in several cancer cell lines. In this study, we report the successful synthesis of (89)Zirconium-labeled Cbl that was derivatized with desferrioxamine ((89)Zr-Cbl). We document the purity of the tracer and its binding to TC compared with that of unmodified cyano-Cbl (CN-Cbl)...
October 31, 2017: ACS Omega
https://www.readbyqxmd.com/read/29076911/abdominal-splenosis-mimicking-peritoneal-metastasis-in-prostate-specific-membrane-antigen-pet-ct-confirmed-with-selective-spleen-spect-ct
#6
Emre Demirci, Duygu Has Simsek, Levent Kabasakal, Mehmet Mülazimoğlu
Ga-prostate-specific membrane antigen (PSMA) PET/CT is a rapidly evolving diagnostic technique to image prostate cancer. In contrast to the name PSMA, various tissues show Ga-PSMA uptake in PET/CT imaging. We present a case of a 68-year-old man with prostate cancer who underwent Ga-PSMA PET/CT. Along with metastatic lymph nodes, multiple nodular lesions within the peritoneal spaces of all 4 quadrants of the abdomen showed high PSMA expression. Because of a history of splenic rupture, a Tc-labeled heat-denatured erythrocyte scintigraphy and SPECT were performed...
October 26, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29076910/optimizing-somatostatin-receptor-imaging-in-patients-with-neuroendocrine-tumors-the-impact-of-99mtc-hynictoc-spect-spect-ct-versus-68ga-dotatate-pet-ct-upon-clinical-management
#7
Jolanta Kunikowska, Valerie Lewington, Leszek Krolicki
AIM: The presence of somatostatin receptors in neuroendocrine tumors allows visualization with radiolabeled somatostatin analogs in vivo. The aim of this prospective study was to compare somatostatin receptor imaging using Tc-HYNICTOC with Ga-DOTATATE (DOTA-DPhe1,Tyr3-octreotate) with respect to sensitivity, specificity, and impact upon clinical decision making. METHODS: Sixty-eight patients (30 men, 38 women; aged 56.4 ± 13.5 years) with disseminated, histologically proven neuroendocrine tumor were enrolled...
December 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29043431/-99m-tc-hdp-bone-scintigraphy-and-18-f-sodiumfluoride-pet-ct-in-primary-staging-of-patients-with-prostate-cancer
#8
Maurits Wondergem, Friso M van der Zant, Remco J J Knol, Anne Marij G Burgers, Siebe D Bos, Igle J de Jong, Jan Pruim
INTRODUCTION/AIM: Correct staging of patients with prostate cancer is important for treatment planning and prognosis. Although bone scintigraphy with (99m)Tc-phosphonates (BS) is generally advised for staging by guidelines in high risk prostate cancer, this imaging technique is hampered by a high rate of inconclusive results and moderate accuracy. Potentially better imaging techniques for detection of bone metastases such as (18)F-sodiumfluoride PET/CT (NaF PET/CT) are therefore being evaluated...
October 17, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28976334/super-scan-caused-by-parathyroid-carcinoma-observed-both-in-18-f-fdg-pet-ct-scan-and-tc-99m-mdp-bone-scintigraphy
#9
İsa Burak Güney, Semra Paydaş, Hüseyin Tuğsan Ballı
Super scan is a well-known finding described in skeletal scintigraphy characterized by uniform symmetrically increased radiopharmaceutical uptake by bones and consequently diminished renal parenchymal activity. Sy et al. hypothesized that the faint visualization of renal cortex in bone scintigraphy might be the result of increased uptake of radiopharmaceutical by pathologic bones and reduced phosphate excretion. The super scan on (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) has been observed in various conditions such as prostate cancer, lung cancer, renal adenocarcinoma, gastric cancer and primitive neuroectodermal tumor of the kidney...
October 3, 2017: Molecular Imaging and Radionuclide Therapy
https://www.readbyqxmd.com/read/28902729/comparative-effectiveness-of-ultrasonography-99mtc-sestamibi-and-18f-fluorocholine-pet-ct-in-detecting-parathyroid-adenomas-in-patients-with-primary-hyperparathyroidism
#10
Ntk Thanseer, Sanjay Kumar Bhadada, Ashwani Sood, Bhagwant Rai Mittal, Arunanshu Behera, Arun Kumar Reddy Gorla, Renjith R Kalathoorakathu, Priyanka Singh, Divya Dahiya, Uma Nahar Saikia, Sudhaker D Rao
PURPOSE: Accurate preoperative localization of parathyroid lesion(s) is crucial for successful surgical management of primary hyperparathyroidism (PHPT). This study was conducted to compare the effectiveness of ultrasonography (USG) of the neck, Tc-sestamibi (MIBI) imaging with or without SPECT/CT, and F-fluorocholine (FCH) PET/CT imaging in the preoperative localization of parathyroid lesions in patients with PHPT. METHODS: Fifty-four consecutive patients with PHPT were included in this prospective study who underwent preoperative localization of the parathyroid lesion(s) using 3 diagnostic modalities followed by surgery...
December 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28902727/solitary-osteogenic-sternum-plasmacytoma-on-bone-scintigraphy-and-fdg-pet-ct
#11
Ying Zhang, Changming Zhang, Hongyan Zhai
We reported a rare solitary osteogenic sternum plasmacytoma case. A 49-year-old woman experienced progressing pain in the sternum for 2 years. Abnormal Tc-MDP accumulation and increase in F-FDG uptake (SUVmax, 4.4) were co-localized with the osteogenic lesion in the sternum body detected by diagnostic CT. The lesion was histologically confirmed as plasma cell neoplasm suggestive of plasmacytoma. The patient had good response to radiotherapy.
September 11, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28898798/free-disease-long-term-survival-in-primary-thoracic-spine-leiomyosarcoma-after-total-en-bloc-spondylectomy-a-case-report
#12
José Ramirez-Villaescusa, Adriana Canosa-Fernández, Antonio Martin-Benlloch, David Ruiz-Picazo, Jesús López-Torres Hidalgo
INTRODUCTION: To describe an unusual primary vertebral leiomyosarcoma in thoracic spine. PRESENTATION OF CASE: An isolated lesion of the T11 vertebra in a 62-year-old woman with no neurologic deficit is reported. Imaging findings indicated a nonspecific high-grade malignant lesion. TC-guided biopsy failed thus open incisional biopsy was needed. A diagnosis of low-intermediate mesenchymal sarcoma was made. A total en bloc spondylectomy of T11 was performed with three-column reconstruction...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28823060/cardiac-death-in-patients-with-left-ventricular-aneurysm-remodeling-and-myocardial-viability-by-gated-99m-tc-mibi-spect-and-gated-18-f-fdg-pet
#13
Weixue Wang, Xiang Li, Congna Tian, Shihua Zhao, Marcus Hacker, Xiaoli Zhang
(1) To evaluate the prognostic value of LV remodeling parameters in patients with LV aneurysm by gated SPECT (GSPECT), gated PET (GPET) and CMR; (2) to evaluate the impact of myocardial viability and LV remodeling on the long-term cardiac survival in patients with LV aneurysm. One hundred and twenty-six consecutive patients underwent GPET, GSPECT and CMR within two weeks, with a mean follow-up of 3.9 ± 1.5 years. End-diastolic volume (EDV, mL) and end-systolic volume (ESV, mL) measured by GPET, GSPECT and CMR and corrected for BSA; EDVI and ESVI were calculated...
August 19, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28806246/response-assessment-of-223ra-treatment-should-a-fluorocholine-pet-ct-be-performed
#14
Ana María García Vicente, Ángel Soriano Castrejón, Ruth Alvarez Cabellos, Belén Sanchez Gil, Nicolás Mohedano Mohedano
We present 3 cases of patients with castration-resistant prostate cancer and bone metastases treated with Ra, belonging to our prospective and multicenter ChoPET-Rad study. All patients underwent clinical, hematological, and biochemical monitoring between each Ra administration. Initial and follow-up F-fluorocholine PET/CT and Tc-biphosphonate bone scintigraphy were performed previously and after the third Ra administration. Both techniques correctly established the response to treatment, in agreement to the biochemical response, although differences in the disease expression (concordant and discordant patterns) were found because of the different radiotracer biodistribution and molecular information derived from them...
October 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28798033/a-prospective-study-comparing-99m-tc-hdp-planar-bone-scintigraphy-and-whole-body-spect-ct-with-18-f-fluoride-pet-ct-and-18-f-fluoride-pet-mri-for-diagnosing-bone-metastases
#15
Johan Löfgren, Jann Mortensen, Sine Hvid Rasmussen, Claus Madsen, Annika Loft, Adam Espe Hansen, Peter Oturai, Karl Erik Jensen, Mette Louise Mørk, Michala Reichkendler, Liselotte Højgaard, Barbara M Fischer
We prospectively evaluate and compare the diagnostic performance of (99m)Tc-HDP planar bone scintigraphy (pBS), (99m)Tc-HDP SPECT/CT, (18)F-NaF PET/CT and (18)F-NaF PET/MRI for the detection of bone metastases. Methods: 117 patients with histologically proven malignancy referred for clinical pBS were prospectively enrolled. pBS and whole-body SPECT/CT were performed followed by (18)F-NaF PET/CT within 9 days. (18)F-NaF PET/MRI was also performed in 46 patients. A "truth panel" including clinical follow-up served as standard of reference...
August 10, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28793848/-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-may-exclude-malignancy-in-sonographically-suspicious-and-scintigraphically-hypofunctional-thyroid-nodules-and-reduce-unnecessary-thyroid-surgeries
#16
Marcus Ruhlmann, Jürgen Ruhlmann, Rainer Görges, Ken Herrmann, Gerald Antoch, Hans-Wilhelm Keller, Verena Ruhlmann
BACKGROUND: The aim of this study was to evaluate whether (18)F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) is useful in the further characterization of sonographically suspicious and scintigraphically hypofunctional thyroid nodules. METHODS: Sixty-five patients with sonographically suspicious thyroid nodules that were hypofunctional on 99m-Tc-pertechnetate scintigraphy (diameter >1 cm) were retrospectively analyzed. All patients underwent evaluation with FDG-PET/CT...
October 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28758969/assessment-of-bone-metastases-in-patients-with-prostate-cancer-a-comparison-between-99m-tc-bone-scintigraphy-and-68-ga-ga-psma-pet-ct
#17
Lena Thomas, Caroline Balmus, Hojjat Ahmadzadehfar, Markus Essler, Holger Strunk, Ralph A Bundschuh
PURPOSE: Bone scintigraphy is the standard of reference in bone metastases in prostate cancer patients. However, new radiotracers employed in prostate-specific membrane antigen (PSMA)-ligands has led to the growing importance of PET/CT as diagnostic tool. The aim of our study was to investigate the difference between bone scan and PSMA-PET/CT for the detection of bone metastases in prostate cancer. METHODS: Thirty patients with bone metastases originating from prostate cancer were examined by (99m)Tc-MDP bone scan and (68)Ga-PSMA-PET/CT within an average of 21 days...
July 31, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28744321/an-18-f-positron-emitting-fluorescent-cerebrospinal-fluid-probe-for-imaging-damage-to-the-brain-and-spine
#18
Harikrishna Kommidi, Hua Guo, Nandi Chen, Dohyun Kim, Bin He, Amy P Wu, Omer Aras, Richard Ting
Fluorescein is modified to bear (18)F so that it can act as both a positron emitter, and a fluorophore, allowing detection by positron emission tomography (PET), scintillation, and fluorescent imaging (FL). [(18)F]-2 is injected into the intrathecal space of rats and used to observe the cerebrospinal fluid (CSF) that bathes the brain and spine. Injury in three different applications is visualized with [(18)F]-2: 1) detection of a 0.7 mm paranasal-sinus CSF leak (CSFL); 2) detection of 0.5 mm puncture damage to the thoracic spine (acute spinal cord injury); and 3) detection of intracerebral hemorrhage/edema because of traumatic brain injury...
2017: Theranostics
https://www.readbyqxmd.com/read/28737577/vertebral-myeloma-mimicking-prostatic-carcinoma-metastasis-in-68ga-psma-pet-ct
#19
Esben Hoej Merrild, Steen Baerentzen, Kirsten Bouchelouche, Simon Buus
Ga-PSMA PET/CT was performed in a 75-year-old man with newly diagnosed prostate cancer because of an equivocal lesion in the spine both on Tc-bone-SPECT/CT and MRI. Because of increased PSMA activity on PET/CT, the bone lesion was interpreted as metastasis from prostate cancer. Later, the patient was diagnosed as having monoclonal gammopathy of unknown significance. A biopsy was performed, and histological examination revealed multiple myeloma with PSMA expression in the neovessels but no metastatic prostate cancer cells...
October 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28733376/detection-of-osteomyelitis-in-the-diabetic-foot-by-imaging-techniques-a-systematic-review-and-meta-analysis-comparing-mri-white-blood-cell-scintigraphy-and-fdg-pet
#20
REVIEW
Chiara Lauri, Menno Tamminga, Andor W J M Glaudemans, Luis Eduardo Juárez Orozco, Paola A Erba, Paul C Jutte, Benjamin A Lipsky, Maarten J IJzerman, Alberto Signore, Riemer H J A Slart
OBJECTIVE: Diagnosing bone infection in the diabetic foot is challenging and often requires several diagnostic procedures, including advanced imaging. We compared the diagnostic performances of MRI, radiolabeled white blood cell (WBC) scintigraphy (either with 99mTc-hexamethylpropyleneamineoxime [HMPAO] or 111In-oxine), and [18F]fluorodeoxyglucose positron emission tomography (18F-FDG-PET)/computed tomography. RESEARCH DESIGN AND METHODS: We searched Medline and Embase as of August 2016 for studies of diagnostic tests on patients known or suspected to have diabetes and a foot infection...
August 2017: Diabetes Care
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