Use of the Outreach Distal Access Catheter for microcatheter stabilization during intracranial arteriovenous malformation embolization.
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Titanium and tantalum as mesenchymal stem cell scaffolds for spinal fusion: an in vitro comparative study.
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Surgical technique: a cup-in-cup technique to restore offset in severe protrusio acetabular defects.
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Surgical technique: Porous tantalum reconstruction for destructive nonprimary periacetabular tumors.
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Contribution of myocardium overlying the anterolateral papillary muscle to left ventricular deformation.
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Tantalum augments for Paprosky IIIA defects remain stable at midterm followup.
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The count rate performance of a multiwire gamma camera measured by a decaying source method with 9.3-minute tantalum-178.
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The multiwire gamma camera (MWGC) operates at high count rates with radionuclides of low energy and short half-life. We evaluate the count rate performance of the MWGC with tantalum-178 (178Ta) by a decaying source method. Data acquired dynamically by the camera from a 178Ta source in the NEMA Standards scatter phantom were corrected for deadtime loss by a trial paralyzing deadtime and converted to their natural logarithms. The trial deadtime, tau, was adjusted iteratively after curve fittings until a straight line was achieved. The paralyzing deadtime determined by this method was 0.41 microsecond. Therefore, the camera can be operated up to 850,000 cps with 178Ta without exceeding 50% data loss. This rate is 10 times greater than the performance of the typical scintillation camera. Moreover, high count rates are achieved without significant loss of spatial resolution. (+info)
Electrostatic self-assembly of multilayer copolymeric membranes on the surface of porous tantalum implants for sustained release of doxorubicin.
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