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Ultrasound localization microscopy
Z Med Phys. 2023 Jun 14:S0939-3889(23)00030-2. doi: 10.1016/j.zemedi.2023.02.004. Online ahead of print.ABSTRACTUltrasound Localization Microscopy (ULM) is an emerging technique that provides impressive super-resolved images of microvasculature, i.e., images with much better resolution than the conventional diffraction-limited ultrasound techniques and is already taking its first steps from preclinical to clinical applications. In comparison to the established perfusion or flow measurement methods, namely contrast-enhanced ultrasound (CEUS) and Doppler techniques, ULM allows imaging and flow measurements even down to the c...
Source: Zeitschrift fur Medizinische Physik - June 16, 2023 Category: Radiology Authors: Stefanie Dencks Georg Schmitz Source Type: research

cMUT technology developments
Z Med Phys. 2023 Jun 12:S0939-3889(23)00052-1. doi: 10.1016/j.zemedi.2023.04.010. Online ahead of print.ABSTRACTCapacitive micromachined ultrasonic transducer (cMUT) technology has steadily advanced since its advent in the mid-1990's. Though cMUTs have not supplanted piezoelectric transducers for medical ultrasound imaging to date, researchers and engineers are continuing to improve cMUTs and leverage unique cMUT characteristics toward new applications. While not intended to be an exhaustive review of every aspect of cMUT state-of-the-art, this article provides a brief overview of cMUT benefits, challenges, and opportuniti...
Source: Zeitschrift fur Medizinische Physik - June 14, 2023 Category: Radiology Authors: Carl D Herickhoff Rob van Schaijk Source Type: research

Medical ultrasound: Time-honored method or emerging research frontier?
Z Med Phys. 2023 Jun 9:S0939-3889(23)00073-9. doi: 10.1016/j.zemedi.2023.05.005. Online ahead of print.NO ABSTRACTPMID:37302938 | DOI:10.1016/j.zemedi.2023.05.005 (Source: Zeitschrift fur Medizinische Physik)
Source: Zeitschrift fur Medizinische Physik - June 11, 2023 Category: Radiology Authors: Nicole V Ruiter Oliver D Kripfgans Source Type: research

Low frequency 3D transmission ultrasound tomography: technical details and clinical implications
CONCLUSIONS: The high Spearman rho indicates a monotonic (not necessarily linear) relation between our method and industry gold standard Volpara™ density. The acoustic field verifies the need for 3D modeling. The MRMC study, the orthopedic images, breast density study, and references, all indicate the clinical utility of the SOS and reflection images. The QT image of the knee shows its ability to monitor tissue the MRI cannot. The included references and images herein indicate the proof of concept for 3D UT as a viable and valuable clinical adjunct in pediatric and orthopedic situations in addition to the breast imaging....
Source: Zeitschrift fur Medizinische Physik - June 9, 2023 Category: Radiology Authors: James Wiskin Bilal Malik John Klock Source Type: research

Automatic AI-based contouring of prostate MRI for online adaptive radiotherapy
CONCLUSION: In this study, an AI-based autocontouring was successfully trained for online adaptive MR-guided radiotherapy on the 1.5 T MR-Linac system. The developed model can automatically generate contours accepted by physicians (80%) or only with the need of minor corrections (16%) for the irradiation of primary prostate on the clinically employed sequences.PMID:37263911 | DOI:10.1016/j.zemedi.2023.05.001 (Source: Zeitschrift fur Medizinische Physik)
Source: Zeitschrift fur Medizinische Physik - June 1, 2023 Category: Radiology Authors: Marcel Nachbar Monica Lo Russo Cihan Gani Simon Boeke Daniel Wegener Frank Paulsen Daniel Zips Thais Roque Nikos Paragios Daniela Thorwarth Source Type: research