https://theamericanjournals.com/index.php/tajabe/issue/feedThe American Journal of Agriculture and Biomedical Engineering2025-04-11T15:54:58+00:00The USA Journalseditor@theamericanjournals.comOpen Journal Systems<p>E-ISSN <strong>2689-1018</strong></p> <p>DOI Prefix <strong>10.37547/tajabe</strong></p> <p>Started Year <strong>2019</strong></p> <p>Frequency <strong>Monthly</strong></p> <p>Language <strong>English</strong></p> <p>APC <strong>$250</strong></p>https://theamericanjournals.com/index.php/tajabe/article/view/6010Quantifying recovery coefficients for partial volume effect correction in pet/ct: an anthropomorphic phantom approach2025-04-01T17:56:36+00:00Nickolas Misernickolas@theamericanjournals.com<p>The partial volume effect (PVE) in positron emission tomography/computed tomography (PET/CT) imaging leads to inaccurate quantification of radiotracer uptake, particularly in small structures or regions with low activity. This study proposes a method for calculating recovery coefficients (RCs) to correct for the PVE in PET/CT images using a customized anthropomorphic body phantom. The phantom was designed to replicate human body anatomy, including various organs and tissues, with controlled activity distributions. PET/CT scans were acquired at different spatial resolutions, and the RCs were derived by comparing the measured and true activity concentrations. Our findings demonstrate that the RCs vary based on the size and shape of the region of interest (ROI) and the resolution of the PET scan. These recovery coefficients can be applied to improve quantitative accuracy in PET/CT imaging, particularly for small lesions and organs. The results highlight the effectiveness of using a customized anthropomorphic phantom for PVE correction and the potential clinical benefits of this method in diagnostic imaging.</p>2025-04-01T00:00:00+00:00Copyright (c) 2025 Nickolas Miserhttps://theamericanjournals.com/index.php/tajabe/article/view/6043Determination of the insecticidal activity of the chemical preparation tranil 20% sc, received for testing against cotton bollworm on cotton crops.2025-04-11T15:54:58+00:00Alamuratov Rayimjon Abdimurat o‘g‘lialamuratov@theamericanjournals.comAbdillayev Marat Ibodillayevichabdillayev@theamericanjournals.comSattorov Shoximardon Xushmamatovichsattorov@theamericanjournals.com<p>To determine the insecticidal activity of TRANIL 20% EC against the cotton bollworm (Helicoverpa armigera Hbn), which causes significant damage to cotton crops in our country, field trials were conducted using a dosage rate of 0.2 liters per hectare. The results of the trial showed that by the 7th day, the effectiveness of the preparation reached 89.1%.</p>2025-04-09T00:00:00+00:00Copyright (c) 2025 Alamuratov Rayimjon Abdimurat o‘g‘li, Abdillayev Marat Ibodillayevich, Sattorov Shoximardon Xushmamatovich