Abstract: The invention relates to a peptide compound having an improved binding affinity to somatostatin receptors, comprising a somatostatin analogue as the peptide and a chelating group covalently linked to the N-terminal free amino group of said peptide, wherein said somatostatin analogue carries an 1-naphthylalanine or a 3-benzothienylalanine residue in its 3-position. The invention further relates to said peptide compound labeled with a detectable element or with a therapeutic radionuclide, as well as to a diagnostic method and to a method for the therapeutic treatment of tumors, by using the labeled compounds.

Abstract: The invention relates to a peptide compound having an improved binding affinity to somatostatin receptors, comprising a somatostatin analogue as the peptide and a chelating group covalently linked to the N-terminal free amino group of said peptide, wherein said somatostatin analogue carries an 1-naphthylalanine or a 3-benzothienylalanine residue in its 3-position. The invention further relates to said peptide compound labeled with a detectable element or with a therapeutic radionuclide, as well as to a diagnostic method and to a method for the therapeutic treatment of tumors, by using the labeled compounds.

Abstract: A thrust block for an irrigation system enables a high pressure valve or other component connected to the thrust block to be easily replaced without digging out a concrete block and surrounding portion of the ground and sectioning the adjacent pipe sections. The valve includes flanges on each end thereof which are releasably secured to similarly configured flanges on couplings. Braces are partially embedded within a concrete block beneath the valve and an upper end of each brace is secured to the fasteners joining the conventional flanges of the valve and the coupling. A push-on fitting is provided on each coupling for easy assembly of the coupling to the adjacent pipe sections.