Production of Yttrium-86 radioisotope using genetic algorithm and neural network

Rabiei, Mobina; Khorshidi, Abdollah; Soltani-Nabipour, Jamshid

doi:10.1016/j.bspc.2021.102449

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…The CT, MRI, and fMRI techniques have long been established as suitable functional methods for studying the metabolism of a specific organ. [106][107][108][109][110][111][112][113][114][115][116][117][118] Regardless of all psychological issues and from the physical health perspective, the metabolic detecting by positron or single photon emission computed tomography [119][120][121][122][123][124][125] -using distinct radiopharmaceuticals [126][127][128][129][130][131][132][133] besides registration of neuroimages could accelerate the finding relationship between sexual activity, health, and also cancer [134][135][136][137][138][139][140][141][142] from prostate and oral-esophageal cancer risk by human papillomavirus. The operative and adjuvant ways acknowledge that brain performance is significantly distinguished by neuroimaging in personality evaluation and also psychological schedules.…”

Section: Discussionmentioning

confidence: 99%

Examining Neural Correlates of Sexual Preferences between Persian Homo- and Heterosexual Males Using Psychological Assessments and Functional Magnetic Resonance Imaging in Specifying Cognitive Map: A Limited and Cross-sectional Study

Khorshidi

2024

Journal of Pediatric Neurology

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Although the brain is an important part of a person's sexual life, little is known about the correlations between sexual response and brain activation. This study examines brain responses through clinical testing to reveal several brain structures whose activation is relevant to sexual arousal besides psychological testing according to the common traditional values and standards of Iranian society. Based on an initial self-report, 25 homosexual and 25 heterosexual males participated in this test to elucidate the identity and sexual trends via the Minnesota Multiphasic Personality Inventory (MMPI-2). Also, an fMRI technique—by presenting distinct homo- and heterosexual sex erotic pictures during the test—was employed in neural correlates of sexual arousal via blood oxygen level dependent (BOLD) signal measuring and Statistical Parametric Mapping analysis. In five selected homosexuals by the most appropriate MMPI test score, brain activities were significantly detected in the midbrain, amygdala, anterior cingulate gyrus, frontal cortex, orbitofrontal cortex, globus pallidus, thalamus, and putamen when the participant saw the erotic pictures during the test, which were responsive to sexual arousal. Also, bilateral caudate nucleus, left angular gyrus, and bilateral pallidum were activated but five selected heterosexuals showed no activation in these areas (p < 0.001). Likewise, the MMPI method confirmed that homosexuality was relevant to diverse life positions, and biological and socioeconomic aspects. The maximum positive correlations were pairwise found in the parietal lobule by r = 0.61 (p < 0.05) and in the frontal gyrus by r = 0.64 (p = 0.10), and the minimum negative correlations were in globus pallidus by r = − 0.18 (p < 0.10) and r = − 0.16 (p < 0.10) for homosexuals and heterosexuals, correspondingly. These results may be useful for understanding the different neural mechanisms of personality recognition and sexual orientation changes while incorporating the individual's history and experience simultaneously into the assessment.

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Section: Discussionmentioning

confidence: 99%

Examining Neural Correlates of Sexual Preferences between Persian Homo- and Heterosexual Males Using Psychological Assessments and Functional Magnetic Resonance Imaging in Specifying Cognitive Map: A Limited and Cross-sectional Study

Khorshidi

2024

Journal of Pediatric Neurology

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“…Therefore, collimators should be designed in such a way that they offer elevated resolution, even at the cost of sensitivity. To improve the cost function, one may optimize the geometric parameters of the CCS using the genetic algorithm [32], which is outside the aim of this survey.…”

Section: Discussionmentioning

confidence: 99%

Improvement of the Point Spread Function by Collimators’ New Configuration in Nuclear Medicine

Ashoor

Khorshidi

2021

Preprint

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Objective: The collimators in which the various geometrical configurations have been suggested to optimize the sensitivity and resolution have a key role in acquiring the qualified images in nuclear medicine towards a better recognition of some diseases. Methods: In this study, a new configuration as a geometrical combination of the conical, cylindrical and spherical (CCS) volumes for parallel hole collimators which is assessed by using the volumetric-parametric method has been introduced to improve point spread function (PSF) being the collimators response on the radioactive point source. It has been simulated by the MCNPX code at the various energies values of the point source along with the traditional collimator in which included the cylindrical volume only. Results: The PSF will transmogrify from a delta function to a distribution which can correlate with a Gaussian distribution, while the scattered gamma rays were increased. The simulation results have indicated that the PSF in the CCS configuration is narrower than that of the cylindrical one at all the energies, leading the improvement of the resolution. Also, the theoretical results are agreement with the simulated ones. The more the energy value of the source, the more broaden the PSF will be due the more penetration strength. The narrower the PSF, the better the qualified image will be. Conclusion: This method may be employed to determine the accurate attenuation coefficient of absorbers as well.

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Nano Yttrium-90 and Rhenium-188 production through medium medical cyclotron and research reactor for therapeutic usages: A Simulation study

Khorshidi

2023

Nuclear Engineering and Technology

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Production of Yttrium-86 radioisotope using genetic algorithm and neural network

Cited by 4 publications

References 35 publications

Examining Neural Correlates of Sexual Preferences between Persian Homo- and Heterosexual Males Using Psychological Assessments and Functional Magnetic Resonance Imaging in Specifying Cognitive Map: A Limited and Cross-sectional Study

Examining Neural Correlates of Sexual Preferences between Persian Homo- and Heterosexual Males Using Psychological Assessments and Functional Magnetic Resonance Imaging in Specifying Cognitive Map: A Limited and Cross-sectional Study

Improvement of the Point Spread Function by Collimators’ New Configuration in Nuclear Medicine

Nano Yttrium-90 and Rhenium-188 production through medium medical cyclotron and research reactor for therapeutic usages: A Simulation study

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