Current Radiopharmaceuticals - Volume 7, Issue 2, 2014

Alterations of the cardiac autonomic nervous system play an important role in the pathway of many heart diseases. Nuclear imaging tools have been demonstrated to be useful for global and regional assessment of myocardial innervation. We used 11C-meta-hydroxy-ephedrine (11C-mHED), a catecholamine analogue, as a radiotracer usable with a PET/CT scanner to study the cardiac sympathetic system. After a fast and aut Read More

We described herein a simple and efficient microwave assisted synthesis of HYNIC analogues. Two different activated esters of HYNIC, the hydrazine protected with a trifluoroacetyl group (5) and the free hydrazine (6) were conjugated to the monoclonal antibody Nimotuzumab. Technetium-99m radiolabeling of Nimotuzumab was achieved with high efficiency using 5 and 6 derivates. The NHS-HYNIC-Tfa derivate allowed better lab Read More

The main purpose of this study was to evaluate Gd-DTPA kinetics for the differential diagnosis between malignant and benign breast lesions. As a secondary aim, Gd-DTPA kinetics in malignant lesions was tested for predicting axillary lymph nodes involvement. Eighty-eight patients who underwent MRI for suspected breast tumor were selected from our database. All patients underwent the same acquisition protocol consi Read More

The dopamine D2 receptor radiotracer [11C]Raclopride is used extensively in clinical and preclinical imaging. Currently, a wide range of methods to produce [11C]Raclopride have been developed using traditional vessel reactions as well as cartridge or captive solvent. This work reports the optimisation of the production of [11C]Raclopride using a Synthra GPextent, comparing various methods. With optimised conditions, we Read More

When an intense intestinal FDG accumulation occurs, especially if focal, it can be referred to either physiological intestinal activity or bowel disease, thus leading to a radical change in patient’s prognosis. Within a year, we recommended a colonoscopy to 103 of 7365 patients who were subjected to a total body FDG PET/CT. In a case-series study, we re-evaluated the patients and their lesions if already investigated with colonoscop Read More

Dendrimers are branched nanomolecules, with a three dimensional structure, very low polydispersity and high functionality. Poly(amidoamine) (PAMAM) dendrimers are the most investigated class of dendrimers. In this study, PAMAM G4 dendrimer conjugated with HYNIC (hydrazinonicotinamide), an efficient bifunctional chelator, was characterized. Structure of the derivatized dendrimer was confirmed by Read More

Proline and hydroxyproline represent major constituents of mammalian structural proteins, especially of collagen. An efficient radiosynthesis of the 18F-labeled proline derivatives cis-/trans-4-[18F]fluoro-L-proline was developed two decades ago with the aim to investigate various diseases with altered collagen synthesis using Positron-Emission- Tomography (PET). A number of studies have explored cis-4-[18F]fluoro-L-proline upt Read More

Medullary thyroid cancer (MTC) is considered as a rare thyroid cancer. Surgical approaches such as, total thyroidectomy and bilateral lymph node dissection, represent the first-line treatment. Persistent or increasing serum levels of tumor markers, such as CEA and calcitonin, imply residual or recurrent disease. An early and precise detection of recurrence is very important for guiding appropriate treatment. Recent developme Read More

To study the comparative effects of beta radiation emitted from Na131I with equivalent dose of 60Co γ- radiation across a range of tumor types and underlying mechanism of cytotoxicity. Different tumor cell lines of various tissue origin viz. Raji, U937, A431 and MCF-7 were irradiated with beta radiation emitted from Na131I and equivalent dose of 60Co γ- radiation (0.4 Gy). Cellular toxicity and apoptosis study were carried Read More

Infections by Candida spp and Aspergillus spp are the most common causes of invasive fungal infections. The main diagnostic methods are blood culture, and antigen-based techniques, but they are still suboptimal, leading to delays in the initiation of therapies and resulting in high mortality rates despite the availability of several new antifungal agents. The aim of this work was the development, synthesis and evaluation of a Read More