BACKGROUND Many online interventions designed to promote health behaviors combine multiple behavior change techniques (BCTs), adopt different modes of delivery (MoD) (eg, text messages), and range in how usable they are. Research is therefore needed to examine the impact of these features on the effectiveness of online interventions. OBJECTIVE This study applies Classification and Regression ...

OBJECTIVE We assessed the lesion detectability of low-dose diagnostic (123)I-metaiodobenzylguanidine (MIBG) whole-body scans obtained at 6 and 24 h compared with posttreatment (131)I-MIBG whole-body scans in malignant pheochromocytoma and paraganglioma. METHODS Scintigrams obtained in 15 patients with malignant pheochromocytoma and paraganglioma were retrospectively analyzed. Diagnostic scans...

Polymeric synthetic host , azacrown-attached 2,6-pyridylene ethynylene polymer, was investigated for its saccharide recognition and the additive effect of triethylene tetramine-trifluoroacetic acid; heteroallosteric effects were observed on the basis of CD and UV/Vis analyses, which indicated saccharide-dependent stabilization and destabilization of helical complexes by the formation of pseudop...

Although rare, pheochromocytomas are potentially lethal tumors. Thus, it is important that physicians be able to diagnose these tumors. The definitive diagnosis of a pheochromocytoma rests on demonstrating catecholamine overproduction. Once the diagnosis is established, computed tomography scan, magnetic resonance imaging, and metaiodobenzylguanidine studies are utilized for localizing the tumo...

PLASMA NOREPINEPHRINE CONCENTRATIONS, which increase in patients with congestive heart failure, reflect the severity of the disease and are closely related to prognosis.1 Because sympathetic activity is enhanced with increasing severity of congestive heart failure, the severity and prognosis of congestive heart failure can be evaluated based on parameters determined by I-123 metaiodobenzylguani...

BACKGROUND Decreased cardiac metaiodobenzylguanidine (MIBG) uptake was reported in Parkinson's disease and this contributes to the differential diagnosis between Parkinson's disease and other forms of parkinsonism such as multiple system atrophy. However, decreased MIBG uptake of the thyroid has not been demonstrated. OBJECTIVE To compare MIBG uptake of the thyroid among Parkinson's disease, ...

Embryology texts are most frequently organized in one of two ways depending on their intended purpose. Undergraduate texts are usually structured such that their sequence mimics the stages of embryolog-ical development. This, of course, makes sense, as it follows the method used by most instructors and allows one to rapidly locate information about a specific event of development. Unless, that ...

The methylation rates of a meta-phenyleneethynylene (mPE) oligomer with a terminally-attached 4-dimethylaminopyridine (DMAP) residue are reported for a series of linear and branched methyl sulfonates; these data show that selective methylation is enhanced by locating the DMAP unit at the midpoint of the sequence, allowing the foldamer cavity to function as a reactive sieve.

Arnd Vogler* und Horst Kunkely Universität Regensburg, Institut für Anorganische Chemie, D-8400 Regensburg Z . Naturforsch. 44b, 132-134 (1989); eingegangen am 8. September/10. Oktober 1988 Photolysis, Meta l -Meta l Bond, Charge Transfer Excitation The polar metal-metal bond of [ P h 3 P A u I C o _ I ( C O ) 4 ] was cleaved photochemically by metal to metal ( C o 1 —» A u + I ) charge transfe...