Excitation functions for the cyclotron production of 99mTc and 99Mo

Schölten, B.; Lambrecht, Richard M.; Cogneau, M.; Ruiz, Hernán Vera; Qaim, S.M.

doi:10.1016/s0969-8043(98)00153-5

Cited by 103 publications

(55 citation statements)

References 12 publications

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“…The present result of 99m Tc radionuclide formation is obtained via measurements on nat Mo and extrapolation of the results to 97.4% enrichment of 100 Mo and is shown in figure 3 in comparison with the results of other authors. Our data is in general good agreement with the data reported by Scholten et al [13], where they used 97.4% enrichment of 100 Mo, and those of Takacs et al [14]. The data reported by Levkovskji [15] agree with our data in the energy range from 20 to 30 MeV but are about 50% higher in the region of the maximum.…”

Section: Proton-induced Reaction Cross Sectionssupporting

confidence: 93%

Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of ^natMo

Kim

Meaze

Khandaker

et al. 2007

Nd2007

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Abstract. The Pohang Neutron Facility based on an electron linear accelerator was operated for the neutron total cross section measurements by using the pulsed neutrons produced in a water-cooled Ta-target with a water moderator. The neutron total cross sections of Ta and Mo were measured in the neutron energy region from 0.01 eV to 100-200 eV by using the time-of-flight method. A 6 LiZnS(Ag) glass scintillator with a diameter of 12.5 cm and a thickness of 1.6 cm was used as a neutron detector. The neutron flight path from the water-cooled Ta target to the neutron detector was 12.1 m. The background level was determined by using notch-filters of Co, In, Ta, and Cd sheets. In order to reduce the gamma rays from Bremsstrahlung and those from neutron capture, we employed a neutron-gamma separation system based on their different pulse shapes. The present measurements of Ta and Mo are in general agreement with the evaluated data in ENDF/B-VI. Cross sections for residual radio-nuclide production by proton-induced reactions on natural molybdenum were measured from their respective threshold energies to 42 MeV by using the MC-50 cyclotron at KIRAMS. The activation method and a stacked-foil technique using high-resolution HPGe gamma-ray spectrometry were applied to determine the excitation functions. The reactions induced on Al and Cu foils were used to monitor the parameters of the proton beam. The present results are in generally good agreement with the earlier reported data and with the calculations based on the ACILE-IPPE code.

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Section: Proton-induced Reaction Cross Sectionssupporting

confidence: 93%

Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of ^natMo

Kim

Meaze

Khandaker

et al. 2007

Nd2007

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“…However, there is a high error rate in the measurement by Scholten et al [33]. When this error rate is considered, the theoretical results are in agreement with the measurement by Scholten et al [33]; on the other hand, the cross section value for this reaction is too low (< 0.4 mb). The results of nuclear model calculations together with ten experimental data for the 100 Mo(p,2n) 99m Tc reaction are shown in Figure 10.…”

Section: Production Of the Radioisotope 99m Tcsupporting

confidence: 61%

Investigation of excitation functions of proton-induced reactions on $^{94,\, 96,\, 98,\, 100}$Mo targets for production of radioisotopes $^{94m,\, 94g,\, 96m,\, 96g,\, 96,\, 99m}$Tc

Artun¹,

Aytekin²

2017

Turk J Phys

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Investigation of excitation functions of proton-induced reactions on 94, 96, 98, 100 Mo targets for production of radioisotopes 94m, 94g, 96m, 96g, 96, 99m Abstract: In this work, we investigated the excitation functions of proton-induced reactions on even-even 94−100 Mo isotopes for the production of medical radioisotopes 94m, 94g, 96m, 96g, 96, 99m Tc. To obtain the excitation functions we carried out cross-section calculations in the frameworks of the generalized superfluid model, microscopic level density model, and three options of the preequilibrium process in the Talys code. The aim of this study was to introduce a new aspect for the production of radioisotopes 94m, 94g, 96m, 96g, 96, 99m Tc with different models.

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“…124 I was produced via the 124 Te(p, n) nuclear reaction on 99.8% enriched 124 TeO 2 using the proton energy range of 14-10 MeV (Scholten et al, 1995;Qaim et al, 1996). This nuclear reaction provides very high-purity 124 I, the levels of 125 I and 126 I being o0.01% (Bastian et al, 2001).…”

Section: Production Of 124 Imentioning

confidence: 99%

PET quantitation and imaging of the non-pure positron-emitting iodine isotope 124I

Herzog

Tellmann

Qaim

et al. 2002

Applied Radiation and Isotopes

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A series of PET studies using phantoms is presented to characterize the imaging and quantitative performance of the positron-emitting iodine isotope 124 I. Measurements were performed on the 2D-PET scanner GE 4096+ as well as on the Siemens PET scanner HR+ operated in both 2D and 3D modes. No specific correction was applied for the g-rays emitted together with the positrons. As compared to 18 F, in studies with 124 I there is a small loss of image resolution and contrast, and an increase in background. The quantitative results varied between different scanners and various acquisition as well as reconstruction modes, with an average relative difference of À6713% (mean7SD) in respect of the phantom radioactivity as measured with g-ray spectroscopy. We conclude that quantitation of a radiopharmaceutical labelled with 124 I is feasible and may be improved by the development of specific corrections. r

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Excitation functions for the cyclotron production of 99mTc and 99Mo

Cited by 103 publications

References 12 publications

Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of ^natMo

Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of ^natMo

Investigation of excitation functions of proton-induced reactions on $^{94,\, 96,\, 98,\, 100}$Mo targets for production of radioisotopes $^{94m,\, 94g,\, 96m,\, 96g,\, 96,\, 99m}$Tc

PET quantitation and imaging of the non-pure positron-emitting iodine isotope 124I

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Excitation functions for the cyclotron production of 99mTc and 99Mo

Cited by 103 publications

References 12 publications

Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of natMo

Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of natMo

Investigation of excitation functions of proton-induced reactions on $^{94,\, 96,\, 98,\, 100}$Mo targets for production of radioisotopes $^{94m,\, 94g,\, 96m,\, 96g,\, 96,\, 99m}$Tc

PET quantitation and imaging of the non-pure positron-emitting iodine isotope 124I

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Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of ^natMo

Measurement of the neutron total cross sections of Ta and Mo and proton induced reaction cross sections of ^natMo