Results 111 to 120 of about 4,777,622 (429)

Commissioning of Halcyon enhanced leaf model in the Eclipse treatment planning system: Focus on simple slit fields and VMAT dose calculation

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose The dual‐layer multileaf collimator (MLC) in Halcyon adds complexities to the dose calculation process owing to the variability of dosimetric characteristics with leaf motion. Recently, an enhanced leaf model (ELM) was developed to refine the MLC model in the Eclipse treatment planning system. This study investigates the performance of
Ryohei Miyasaka, Mari Shirai, Mitsunobu Igari, Yume Kojima, Yuki Kozawa, Toru Kawachi, Ryusuke Hara   +6 more
wiley   +1 more source

Porphyromonas gingivalis predicts local recurrence after endoscopic submucosal dissection of early esophageal squamous cell carcinoma or precancerous lesion

BMC Cancer, 2023
Background Porphyromonas gingivalis plays an oncogenic role in development and progression of esophageal squamous cell carcinoma (ESCC). However, the impact of P.
She-Gan Gao, Zhi-Peng Qi, Yi-Jun Qi, Ying-Yong Hou, Yi-Wen Liu, Meng-Xiang Li, Bing Li, Di Sun, Qiang Shi, Shi-Lun Cai, Ping-Hong Zhou, Yun-Shi Zhong   +11 more
doaj   +1 more source

Geometric and dosimetric evaluation of a commercial AI auto‐contouring tool on multiple anatomical sites in CT scans

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Current radiotherapy practices rely on manual contouring of CT scans, which is time‐consuming, prone to variability, and requires highly trained experts. There is a need for more efficient and consistent contouring methods. This study evaluated the performance of the Varian Ethos AI auto‐contouring tool to assess its potential integration into
Robert N. Finnegan, Alexandra Quinn, Patrick Horsley, Joseph Chan, Maegan Stewart, Regina Bromley, Jeremy Booth   +6 more
wiley   +1 more source

Intercellular transfer of exosomal wild type EGFR triggers osimertinib resistance in non-small cell lung cancer

Molecular Cancer, 2021
Background Epidermal growth factor receptor (EGFR)-mutated lung cancer constitutes a major subgroup of non-small cell lung cancer (NSCLC) and osimertinib is administrated as first-line treatment.
Shaocong Wu, Min Luo, Kenneth K. W. To, Jianye Zhang, Chaoyue Su, Hong Zhang, Sainan An, Fang Wang, Da Chen, Liwu Fu   +9 more
doaj   +1 more source

Large Language Models for Granularized Barrett's Esophagus Diagnosis Classification [PDF]

arXiv, 2023
Diagnostic codes for Barrett's esophagus (BE), a precursor to esophageal cancer, lack granularity and precision for many research or clinical use cases. Laborious manual chart review is required to extract key diagnostic phenotypes from BE pathology reports. We developed a generalizable transformer-based method to automate data extraction.
arxiv  

Treatment utilization and outcomes in elderly patients with locally advanced esophageal carcinoma: A review of the National Cancer Database [PDF]

, 2017
For elderly patients with locally advanced esophageal cancer, therapeutic approaches and outcomes in a modern cohort are not well characterized. Patients ≥70 years old with clinical stage II and III esophageal cancer diagnosed between 1998 and 2012 were ...
Bradley, Jeffrey D, Kozower, Benjamin, Lockhart, A. Craig, Meyers, Bryan F, Parikh, Parag J, Perkins, Stephanie M, Puri, Varun, Roach, Michael C, Robinson, Cliff G, Samson, Pamela P, Vlacich, Gregory   +10 more
core   +2 more sources

Recent progress in multidisciplinary treatment for patients with esophageal cancer

Surgery today (Print), 2019
Esophageal cancer is one of the most aggressive gastrointestinal cancers. This review focuses on eight topics within the multidisciplinary approach for esophageal cancer.
Masayuki Watanabe, Reiko Otake, R. Kozuki, T. Toihata, Keita Takahashi, A. Okamura, Y. Imamura   +6 more
semanticscholar   +1 more source

BreastWatch: A Varian Eclipse script tool for Community‐Based automatic evaluation of breast treatment plans

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This work introduces BreastWatch, a Varian Eclipse script tool designed to help medical physicists, dosimetrists, and radiation oncologists easily inspect and improve External Beam Breast Treatment (EBBT) plans using automatic evaluation of protocol dose‐constraints enhanced by a Community‐Based approach.
Stefano Agostinelli, Daniele Zefiro, Stefania Garelli, Francesca Cavagnetto, Marco Gusinu, Monica Bevegni, Gladys Blandino, Alessandra Fozza, Fabrizio Levrero   +8 more
wiley   +1 more source

Predictive value of a reduction in the level of high-density lipoprotein-cholesterol in patients with non-small-cell lung cancer undergoing radical resection and adjuvant chemotherapy: a retrospective observational study

Lipids in Health and Disease, 2021
Background Cancer patients often exhibit chemotherapy-associated changes in serum lipid profiles, however, their prognostic value before and after adjuvant chemotherapy on survival among non-small-cell lung cancer (NSCLC) patients is unknown.
Fan Luo, Kang-mei Zeng, Jia-xin Cao, Ting Zhou, Su-xia Lin, Wen-juan Ma, Yun-peng Yang, Zhong-han Zhang, Fei-teng Lu, Yan Huang, Hong-yun Zhao, Li Zhang   +11 more
doaj   +1 more source

Surface dose analysis and dosimetric comparison of Halcyon versus Truebeam in breast cancer radiotherapy: An OSL dosimetry study

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Breast cancer is a neoplastic disease with high prevalence among women. Radiotherapy is one of the principal treatment modalities for this disease, but it poses significant challenges. This study aimed to compare and evaluate the technical and dosimetric performance of conventional C‐arm linac systems and a new design, Halcyon, in the ...
Mustafa Çağlar, Kudret Akçay, Esra Serin, Dursun Eşitmez, Mehmet Sıddık Cebe, Navid Kheradmand, Ömer Yazıcı, Dilek Ünal, Evrim Metcalfe   +8 more
wiley   +1 more source