Position-Guided Prompt Learning for Anomaly Detection in Chest X-Rays [PDF]
Anomaly detection in chest X-rays is a critical task. Most methods mainly model the distribution of normal images, and then regard significant deviation from normal distribution as anomaly. Recently, CLIP-based methods, pre-trained on a large number of medical images, have shown impressive performance on zero/few-shot downstream tasks.
arxiv
Abstract Purpose A new workflow was investigated for Elekta Unity MR‐Linac by removing the computed tomography (CT)‐simulation step and using diagnostic CT (DCT) for reference plan generation. Materials and methods Ten patients with ultra‐hypofractionated prostate cancer treated with magnetic resonance imaging (MRI)‐guided adaptive radiotherapy were ...
Yuan Xu+5 more
wiley +1 more source
An X-ray investigation of normal paraffins near their melting points
Alex F. Muller
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Chemical action of X-rays on nucleic acids and related substances in aqueous systems. 2. The mechanism of the action of X-rays on nucleic acids in aqueous systems [PDF]
G. Scholes, J. Weiss
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Development of a generic focal spot measurement method suitable for bore‐type linacs
Abstract Purpose In linear accelerators, deviations in the x‐ray focal spot position significantly affect the accuracy of radiation therapy. However, as the focal spot position in bore‐type linac systems such as the Radixact system, cannot be assessed using conventional methods, a new evaluation method is required.
Hidetoshi Shimizu+5 more
wiley +1 more source
An Analysis of X-Ray Induced Single Breaks in Neuroblast Chromosomes of the Grasshopper (Chortophaga Viridifasciata) [PDF]
John G. Carlson
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A method for measuring spatial resolution based on clinical chest CT sequence images
Abstract Purpose This study aimed to develop and validate a method for characterizing the spatial resolution of clinical chest computed tomography (CT) sequence images. Methods An algorithm for characterizing spatial resolution based on clinical chest CT sequence images was developed in Matlab (2021b).
Ying Liu+3 more
wiley +1 more source
ON THE ANALOGY BETWEEN SPONTANEOUS RECOVERIES FROM CANCER AND THE SPECIFIC IMMUNITY INDUCED BY X RAY IRRADIATIONS OF THE LYMPHATIC GLANDS INVOLVED [PDF]
H. D. McCulloch
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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+8 more
wiley +1 more source