Track topics on Twitter Track topics that are important to you
Recent data have indicated that (68)Ga-DOTA-NOC positron emission tomography/X-ray computed tomography (PET/CT) may yield improved images in a shorter acquisition protocol than (111)In-DTPA-octreotide (OctreoScan(R), OCT). Therefore, we performed a prospective comparison of (68)Ga-DOTA-NOC and OCT for the detection of neuroendocrine tumors (NETs).
Nineteen patients (eight carcinoid, nine pancreatic NETs, and two NE carcinoma of unknown origin) with previous positive OCT scans underwent (68)Ga-DOTA-NOC PET/CT and OCT single-photon emission computed tomography imaging for staging or follow-up. Findings were compared by region and verified with conventional imaging.
All images of both modalities demonstrated focal uptake, often at multiple sites. (68)Ga-DOTA-NOC images were clearer than OCT images, facilitating interpretation. Similar foci were identified with both modalities in 41 regions, with additional foci on (68)Ga-DOTA-NOC in 21 and on OCT in 15 regions. CT, magnetic resonance imaging, or ultrasound confirmed the concordant findings in 31 of 41 regions and findings seen with (68)Ga-DOTA-NOC only in 15 of 21 regions. Findings seen with OCT only were less clear and were only confirmed in 4 of 15 regions. (68)Ga-DOTA-NOC had impact on staging in four patients and on management in three patients.
Although (68)Ga-DOTA-NOC and OCT images were similar, in this study, (68)Ga-DOTA-NOC demonstrated more true positive tumor foci and was better tolerated by patients. This direct comparison supports replacement of OCT with (68)Ga-DOTA-NOC-PET/CT in the evaluation of NETs.
Department of Medical Biophysics and Nuclear Medicine, Hadassah-Hebrew University Medical Center, P.O. Box 12000, Jerusalem, 91120, Israel, firstname.lastname@example.org.
This article was published in the following journal.
Name: Molecular imaging and biology : MIB : the official publication of the Academy of Molecular Imaging
(111)In-DTPA-d-Phe(1)-octreotide scintigraphy is an important method of detecting neuroendocrine tumors. We previously reported that a new derivative of (111)In-DTPA-d-Phe(1)-octreotide, (111)In-DTPA-...
Although rare, pediatric neuroendocrine tumors including carcinoid tumor have increased in incidence over the past few decades. Despite increased recognition, survival rates have not significantly imp...
Somatostatin receptor (sstr) scintigraphy for imaging and sstr analogs for treatment have been used for more than 20 y. An important improvement in recent years was the introduction of peptide recepto...
The epidermal growth factor receptor (EGFR) is a member of the erbB family of receptors and is overexpressed in many tumor types. A repebody is a newly designed non-antibody protein scaffold for tumor...
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...
Evaluation of the properties of the image capture test using 99m Tc - HYNIC -TOC EDDA (octreotide labeled with 99mTc) for the diagnosis of neuroendocrine tumors compared to the 111In - DTP...
This is a Phase 2 peptide receptor radionuclide therapy trial of 90Y-DOTATOC in patients with somatostatin receptor positive tumors.
This is a prospective, pilot, single center, open-label study in patients with metastatic neuroendocrine tumor. Eligible participants will undergo baseline assessments at enrollment. Study...
The investigators aim to explore the efficacy of [90Y-DOTA]-TOC and [177LuDOTA]-TOC therapy in advanced neuroendocrine cancer. Therefore, the investigators investigate response, survival a...
The purpose of this study is to understand how people with neuroendocrine tumors respond to treatment with lanreotide after having received treatment with octreotide.
Tumors whose cells possess secretory granules and originate from the neuroectoderm, i.e., the cells of the ectoblast or epiblast that program the neuroendocrine system. Common properties across most neuroendocrine tumors include ectopic hormone production (often via APUD CELLS), the presence of tumor-associated antigens, and isozyme composition.
A group of carcinomas which share a characteristic morphology, often being composed of clusters and trabecular sheets of round "blue cells", granular chromatin, and an attenuated rim of poorly demarcated cytoplasm. Neuroendocrine tumors include carcinoids, small ("oat") cell carcinomas, medullary carcinoma of the thyroid, Merkel cell tumor, cutaneous neuroendocrine carcinoma, pancreatic islet cell tumors, and pheochromocytoma. Neurosecretory granules are found within the tumor cells. (Segen, Dictionary of Modern Medicine, 1992)
A 38-kDa integral membrane glycoprotein of the presynaptic vesicles in neuron and neuroendocrine cells. It is expressed by a variety of normal and neoplastic neuroendocrine cells and is therefore used as an immunocytochemical marker for neuroendocrine differentiation in various tumors. In ALZHEIMER DISEASE and other dementing disorders, there is an important synapse loss due in part to a decrease of synaptophysin in the presynaptic vesicles.
The use of molecularly targeted imaging probes to localize and/or monitor biochemical and cellular processes via various imaging modalities that include RADIONUCLIDE IMAGING; ULTRASONOGRAPHY; MAGNETIC RESONANCE IMAGING; fluorescence imaging; and MICROSCOPY.
A complex of gadolinium with a chelating agent, diethylenetriamine penta-acetic acid (DTPA see PENTETIC ACID), that is given to enhance the image in cranial and spinal MRIs. (From Martindale, The Extra Pharmacopoeia, 30th ed, p706)
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...
Mergers & Acquisitions
Commercial and market reports on mergers and acquisitions in the biotechnology, pharmaceutical, medical device and life-science industries. Mergers and acquisitions (abbreviated M&A;) is an aspect of corporate strategy, corporate finance and manageme...
Pancreatitis Acute pancreatitis is inflammation of the pancreas caused by the release of activated pancreatic enzymes. Common triggers are biliary tract disease and chronic heavy alcohol intake. Diagnosis is based on clinical presentation...