Validation of the geometric equivalent field concept in total scatter factor calculations, for half-, quarter- and off-isocenter asymmetric square fields
CONCLUSIONS: The GESF concept provides acceptable accuracy (< 2%) for the calculation of Scp of the ASFs used in most clinical situations (except from SOF with EFC at large r), and thus can be used in MU verification calculations.PMID:37957949 | DOI:10.1002/acm2.14103 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - November 14, 2023 Category: Physics Authors: Mohammad Samir Hmodi Majeda Nahili Ioannis A Tsalafoutas Bassam Saad Ali Hasan Ousamah Anjak Karlos Shamout Source Type: research

Comparison of baseline drifts using three reflector blocks versus using a single reflector block for the calibration of wall-mounted Respiratory Gating for Scanner (RGSC) camera integrated with a CT
CONCLUSION: Three-block calibration method effectively removes baseline drift caused by couch movement in DIBH/4D CT scan for the wall-mounted camera while the single-block calibration method still has significant residual baseline drift.PMID:37961991 | DOI:10.1002/acm2.14199 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - November 14, 2023 Category: Physics Authors: Bei Liu Chengyu Shi Maneesha Prakash Bryan Gonzalez Ari Kassardjian Ji Kim Paul Mandelin Terence Williams An Liu Source Type: research

Technical note: Commissioning of a low-cost system for directly 3D printed flexible bolus
CONCLUSION: The results of the commissioning measurements performed indicate that the 3D printer and material solution are suitable for clinical use. The 3D printer and material combination can provide a low-cost solution a clinic can implement in-house to directly 3D print flexible bolus.PMID:37962024 | DOI:10.1002/acm2.14206 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - November 14, 2023 Category: Physics Authors: Garrett C Baltz Steven M Kirsner Source Type: research

Investigating the role of imaging factors in the variability of CT-based texture analysis metrics
CONCLUSION: Variation in image noise due to dose reduction algorithms, tube current, and slice thickness show a consistent trend across phantom and patient scans. Prospective evaluation across multiple centers, scanners and imaging protocols is needed for establishing quality assurance standards of radiomics.PMID:37962032 | DOI:10.1002/acm2.14192 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - November 14, 2023 Category: Physics Authors: Bino Abel Varghese Steven Yong Cen Kristin Jensen Joshua Levy Hilde Kjernlie Andersen Anselm Schulz Xiaomeng Lei Vinay Anant Duddalwar David John Goodenough Source Type: research

Validation of the geometric equivalent field concept in total scatter factor calculations, for half-, quarter- and off-isocenter asymmetric square fields
CONCLUSIONS: The GESF concept provides acceptable accuracy (< 2%) for the calculation of Scp of the ASFs used in most clinical situations (except from SOF with EFC at large r), and thus can be used in MU verification calculations.PMID:37957949 | DOI:10.1002/acm2.14103 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - November 14, 2023 Category: Physics Authors: Mohammad Samir Hmodi Majeda Nahili Ioannis A Tsalafoutas Bassam Saad Ali Hasan Ousamah Anjak Karlos Shamout Source Type: research