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Radiology is evolving at a fast pace, and the specific field of cardiovascular and thoracic imaging is no stranger to that trend. While it could, at first, seem unusual to gather these two specialties in a common Issue, the very fact that many of us are trained and exercise in both is more than a hint to the common grounds these fields are sharing. From the ever-increasing role of artificial intelligence in the reconstruction, segmentation, and analysis of images to the quest of functionality derived from anatomy, their interplay is big, and one innovation developed with the former in mind could prove useful for the latter. If the coronavirus disease 2019 (COVID-19) pandemic has shed light on the decisive diagnostic role of chest CT and, to a lesser extent, cardiac MR, one must not forget the major advances and extensive researches made possible in other areas by these techniques in the past years. With this Issue, we aim at encouraging and wish to bring to light state-of-the-art reviews, novel original researches, and ongoing discussions on the multiple aspects of cardiovascular and chest imaging.

Medical equipment & techniques --- lung transplantation --- image processing --- computer-assisted --- pulmonary disease --- chronic obstructive --- bronchiolitis obliterans --- cardiac --- heart --- magnetic resonance --- CMR --- compressed sensing --- congenital heart disease --- GUCH --- real-time imaging --- fast imaging --- function --- retrospective --- retrogating --- image quality --- carcinoid tumor --- neoplasm metastasis --- lymphatic metastasis --- multidetector computed tomography --- neuroendocrine cells --- asbestos-exposition --- HRCT --- asbestosis --- real-time --- arrhythmia --- artifact --- radiation dosage --- lung --- helical computed tomography --- dual-energy CT --- iodine --- diagnostic imaging --- myocarditis --- extra-cellular volume --- thorax --- computed tomography --- photon-counting detectors

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Radiology is evolving at a fast pace, and the specific field of cardiovascular and thoracic imaging is no stranger to that trend. While it could, at first, seem unusual to gather these two specialties in a common Issue, the very fact that many of us are trained and exercise in both is more than a hint to the common grounds these fields are sharing. From the ever-increasing role of artificial intelligence in the reconstruction, segmentation, and analysis of images to the quest of functionality derived from anatomy, their interplay is big, and one innovation developed with the former in mind could prove useful for the latter. If the coronavirus disease 2019 (COVID-19) pandemic has shed light on the decisive diagnostic role of chest CT and, to a lesser extent, cardiac MR, one must not forget the major advances and extensive researches made possible in other areas by these techniques in the past years. With this Issue, we aim at encouraging and wish to bring to light state-of-the-art reviews, novel original researches, and ongoing discussions on the multiple aspects of cardiovascular and chest imaging.

lung transplantation --- image processing --- computer-assisted --- pulmonary disease --- chronic obstructive --- bronchiolitis obliterans --- cardiac --- heart --- magnetic resonance --- CMR --- compressed sensing --- congenital heart disease --- GUCH --- real-time imaging --- fast imaging --- function --- retrospective --- retrogating --- image quality --- carcinoid tumor --- neoplasm metastasis --- lymphatic metastasis --- multidetector computed tomography --- neuroendocrine cells --- asbestos-exposition --- HRCT --- asbestosis --- real-time --- arrhythmia --- artifact --- radiation dosage --- lung --- helical computed tomography --- dual-energy CT --- iodine --- diagnostic imaging --- myocarditis --- extra-cellular volume --- thorax --- computed tomography --- photon-counting detectors

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Photoacoustic (or optoacoustic) imaging, including photoacoustic tomography (PAT) and photoacoustic microscopy (PAM), is an emerging imaging modality with great clinical potential. PAI’s deep tissue penetration and fine spatial resolution also hold great promise for visualizing physiology and pathology at the molecular level. PAI combines optical contrast with ultrasonic resolution, and is capable of imaging at depths of up to 7 cm with a real-time scalable spatial resolution of 10 to 500 µm. PAI has demonstrated applications in brain imaging and cancer imaging, such as breast cancer, prostate cancer, ovarian cancer etc. This Special Issue focuses on the novel technological developments and pre-clinical and clinical biomedical applications of PAI. Topics include but are not limited to: brain imaging; cancer imaging; image reconstruction; quantitative imaging; light source and delivery for PAI; photoacoustic detectors; nanoparticles designed for PAI; photoacoustic molecular imaging; photoacoustic spectroscopy.

History of engineering & technology --- photoacoustic imaging --- tomography --- thermoacoustic --- radio frequency --- image quality assessment --- image formation theory --- image reconstruction techniques --- sparsity --- signal processing --- deconvolution --- empirical mode decomposition --- signal deconvolution --- photoacoustics --- tissue characterization --- absorption --- Photoacoustic Computed Tomography (PACT) --- ring array --- fast imaging --- low cost --- photoacoustic tomography --- full-field detection --- wave equation --- final time inversion --- uniqueness --- stability --- iterative reconstruction --- 3D photoacoustic tomography --- full-view illumination and ultrasound detection --- photoacoustic coplanar --- quartz bowl --- correlation matrix filter --- time reversal operator --- photo-acoustic tomography --- reflection artifacts --- deep learning --- convolutional neural network --- time reversal --- Landweber algorithm --- U-net --- optoacoustic imaging --- respiratory gating --- motion artifacts --- full-ring illumination --- diffused-beam illumination --- point source illumination --- ultrasound tomography (UST) --- photoacoustic tomography (PAT) --- n/a

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This Special Issue contains ten papers which focus on emerging geophysical techniques for mineral exploration, novel modeling, and interpretation methods, including joint inversions of multi physics data, and challenging case studies. The papers cover a wide range of mineral deposits, including banded iron formations, epithermal gold–silver–copper–iron–molybdenum deposits, iron-oxide–copper–gold deposits, and prospecting forgroundwater resources.

Research & information: general --- geophysical electromagnetic modelling --- CSAMT --- CSRMT --- CSEM --- linear slip model --- grid-characteristic method --- elastic waves --- modeling and inversion --- seismic methods --- Zhuxi ore deposit --- control source --- dense array --- body wave tomography --- 3D focusing migration --- regularization --- conjugate migration direction --- fast imaging --- skarn-type iron deposits --- Gadarwara --- central India --- mineralization --- IOCG --- Narmada-Son-Lineament --- Magnetic anomaly --- preconditioned jacobian-free Newton-Krylov (JFNK) method --- undulating terrain --- gravity focusing density inversion --- adaptive equivalent-dimension --- polymetallic minerals --- unstructured mesh and structured mesh --- inversion --- induced polarization --- electromagnetics --- three-dimensional --- effective medium --- discovery --- phosphate mines --- geophysical exploration --- hydrogeology --- phosphate extraction --- gantour Basin --- Ouled Abdoun Basin --- Morocco --- iron deposit --- mineral exploration --- transient electromagnetic method --- magnetotelluric method --- single point continuous motion detection --- gravity --- magnetics --- magnetization vector --- remanent magnetization --- joint inversion --- n/a

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This Special Issue contains ten papers which focus on emerging geophysical techniques for mineral exploration, novel modeling, and interpretation methods, including joint inversions of multi physics data, and challenging case studies. The papers cover a wide range of mineral deposits, including banded iron formations, epithermal gold–silver–copper–iron–molybdenum deposits, iron-oxide–copper–gold deposits, and prospecting forgroundwater resources.

geophysical electromagnetic modelling --- CSAMT --- CSRMT --- CSEM --- linear slip model --- grid-characteristic method --- elastic waves --- modeling and inversion --- seismic methods --- Zhuxi ore deposit --- control source --- dense array --- body wave tomography --- 3D focusing migration --- regularization --- conjugate migration direction --- fast imaging --- skarn-type iron deposits --- Gadarwara --- central India --- mineralization --- IOCG --- Narmada-Son-Lineament --- Magnetic anomaly --- preconditioned jacobian-free Newton-Krylov (JFNK) method --- undulating terrain --- gravity focusing density inversion --- adaptive equivalent-dimension --- polymetallic minerals --- unstructured mesh and structured mesh --- inversion --- induced polarization --- electromagnetics --- three-dimensional --- effective medium --- discovery --- phosphate mines --- geophysical exploration --- hydrogeology --- phosphate extraction --- gantour Basin --- Ouled Abdoun Basin --- Morocco --- iron deposit --- mineral exploration --- transient electromagnetic method --- magnetotelluric method --- single point continuous motion detection --- gravity --- magnetics --- magnetization vector --- remanent magnetization --- joint inversion --- n/a