Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2796500552', 'doi': 'https://doi.org/10.1088/1361-6560/aaeaf2', 'title': 'Comparison of five one-step reconstruction algorithms for spectral CT', 'display_name': 'Comparison of five one-step reconstruction algorithms for spectral CT', 'publication_year': 2018, 'publication_date': '2018-10-24', 'ids': {'openalex': 'https://openalex.org/W2796500552', 'doi': 'https://doi.org/10.1088/1361-6560/aaeaf2', 'mag': '2796500552', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/30465541'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1088/1361-6560/aaeaf2', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S20241394', 'display_name': 'Physics in Medicine and Biology', 'issn_l': '0031-9155', 'issn': ['0031-9155', '1361-6560'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320083', 'host_organization_name': 'IOP Publishing', 'host_organization_lineage': ['https://openalex.org/P4310311669', 'https://openalex.org/P4310320083'], 'host_organization_lineage_names': ['Institute of Physics', 'IOP Publishing'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'https://hal.science/hal-01760845/document', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5085476300', 'display_name': 'Cyril Mory', 'orcid': 'https://orcid.org/0000-0002-1813-6577'}, 'institutions': [], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Cyril Mory', 'raw_affiliation_strings': ['Imagerie Tomographique et Radiothérapie (France)'], 'affiliations': [{'raw_affiliation_string': 'Imagerie Tomographique et Radiothérapie (France)', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5008536903', 'display_name': 'Bruno Sixou', 'orcid': 'https://orcid.org/0000-0002-6589-4696'}, 'institutions': [], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Bruno Sixou', 'raw_affiliation_strings': ['Imagerie Tomographique et Radiothérapie (France)'], 'affiliations': [{'raw_affiliation_string': 'Imagerie Tomographique et Radiothérapie (France)', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5068874255', 'display_name': 'Salim Si‐Mohamed', 'orcid': 'https://orcid.org/0000-0003-0314-4010'}, 'institutions': [{'id': 'https://openalex.org/I4210113288', 'display_name': 'Hôpital Lyon Sud', 'ror': 'https://ror.org/023xgd207', 'country_code': 'FR', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210100596', 'https://openalex.org/I4210113288']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Salim Si-Mohamed', 'raw_affiliation_strings': ['MOTIVATE - Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales (France)', 'Service de Radiologie et IRM [CHU Lyon] (69495 Pierre-Bénite. - France)'], 'affiliations': [{'raw_affiliation_string': 'Service de Radiologie et IRM [CHU Lyon] (69495 Pierre-Bénite. - France)', 'institution_ids': ['https://openalex.org/I4210113288']}, {'raw_affiliation_string': 'MOTIVATE - Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales (France)', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5078080640', 'display_name': 'Loïc Boussel', 'orcid': 'https://orcid.org/0000-0001-9053-8127'}, 'institutions': [{'id': 'https://openalex.org/I4210113288', 'display_name': 'Hôpital Lyon Sud', 'ror': 'https://ror.org/023xgd207', 'country_code': 'FR', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210100596', 'https://openalex.org/I4210113288']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Loïc Boussel', 'raw_affiliation_strings': ['MOTIVATE - Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales (France)', 'Service de Radiologie et IRM [CHU Lyon] (69495 Pierre-Bénite. - France)'], 'affiliations': [{'raw_affiliation_string': 'Service de Radiologie et IRM [CHU Lyon] (69495 Pierre-Bénite. - France)', 'institution_ids': ['https://openalex.org/I4210113288']}, {'raw_affiliation_string': 'MOTIVATE - Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales (France)', 'institution_ids': []}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5091631955', 'display_name': 'Simon Rit', 'orcid': 'https://orcid.org/0000-0003-2530-1013'}, 'institutions': [], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Simon Rit', 'raw_affiliation_strings': ['Imagerie Tomographique et Radiothérapie (France)'], 'affiliations': [{'raw_affiliation_string': 'Imagerie Tomographique et Radiothérapie (France)', 'institution_ids': []}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 2.948, 'has_fulltext': True, 'fulltext_origin': 'pdf', 'cited_by_count': 64, 'citation_normalized_percentile': {'value': 0.999975, 'is_in_top_1_percent': True, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 97, 'max': 98}, 'biblio': {'volume': '63', 'issue': '23', 'first_page': '235001', 'last_page': '235001'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12386', 'display_name': 'Advanced X-ray and CT Imaging', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2204', 'display_name': 'Biomedical Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T12386', 'display_name': 'Advanced X-ray and CT Imaging', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/2204', 'display_name': 'Biomedical Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10522', 'display_name': 'Medical Imaging Techniques and Applications', 'score': 0.9988, 'subfield': {'id': 'https://openalex.org/subfields/2741', 'display_name': 'Radiology, Nuclear Medicine and Imaging'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T10844', 'display_name': 'Radiation Dose and Imaging', 'score': 0.9978, 'subfield': {'id': 'https://openalex.org/subfields/2741', 'display_name': 'Radiology, Nuclear Medicine and Imaging'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/regularization', 'display_name': 'Regularization', 'score': 0.45619804}, {'id': 'https://openalex.org/keywords/minification', 'display_name': 'Minification', 'score': 0.44402322}, {'id': 'https://openalex.org/keywords/tomographic-reconstruction', 'display_name': 'Tomographic reconstruction', 'score': 0.44040558}], 'concepts': [{'id': 'https://openalex.org/C11413529', 'wikidata': 'https://www.wikidata.org/wiki/Q8366', 'display_name': 'Algorithm', 'level': 1, 'score': 0.71457434}, {'id': 'https://openalex.org/C141379421', 'wikidata': 'https://www.wikidata.org/wiki/Q6094427', 'display_name': 'Iterative reconstruction', 'level': 2, 'score': 0.5998297}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.5198103}, {'id': 'https://openalex.org/C81184566', 'wikidata': 'https://www.wikidata.org/wiki/Q1191895', 'display_name': 'Conjugate gradient method', 'level': 2, 'score': 0.47582725}, {'id': 'https://openalex.org/C57493831', 'wikidata': 'https://www.wikidata.org/wiki/Q3134666', 'display_name': 'Projection (relational algebra)', 'level': 2, 'score': 0.46698138}, {'id': 'https://openalex.org/C2776135515', 'wikidata': 'https://www.wikidata.org/wiki/Q17143721', 'display_name': 'Regularization (linguistics)', 'level': 2, 'score': 0.45619804}, {'id': 'https://openalex.org/C147764199', 'wikidata': 'https://www.wikidata.org/wiki/Q6865248', 'display_name': 'Minification', 'level': 2, 'score': 0.44402322}, {'id': 'https://openalex.org/C97742081', 'wikidata': 'https://www.wikidata.org/wiki/Q7820109', 'display_name': 'Tomographic reconstruction', 'level': 3, 'score': 0.44040558}, {'id': 'https://openalex.org/C135252773', 'wikidata': 'https://www.wikidata.org/wiki/Q1567213', 'display_name': 'Inverse problem', 'level': 2, 'score': 0.41873476}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.38350353}, {'id': 'https://openalex.org/C126255220', 'wikidata': 'https://www.wikidata.org/wiki/Q141495', 'display_name': 'Mathematical optimization', 'level': 1, 'score': 0.28649408}, {'id': 'https://openalex.org/C154945302', 'wikidata': 'https://www.wikidata.org/wiki/Q11660', 'display_name': 'Artificial intelligence', 'level': 1, 'score': 0.24476331}, {'id': 'https://openalex.org/C134306372', 'wikidata': 'https://www.wikidata.org/wiki/Q7754', 'display_name': 'Mathematical analysis', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D000465', 'descriptor_name': 'Algorithms', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D007091', 'descriptor_name': 'Image Processing, Computer-Assisted', 'qualifier_ui': 'Q000379', 'qualifier_name': 'methods', 'is_major_topic': True}, {'descriptor_ui': 'D019047', 'descriptor_name': 'Phantoms, Imaging', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D014057', 'descriptor_name': 'Tomography, X-Ray Computed', 'qualifier_ui': 'Q000379', 'qualifier_name': 'methods', 'is_major_topic': True}, {'descriptor_ui': 'D001499', 'descriptor_name': 'Bayes Theorem', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007091', 'descriptor_name': 'Image Processing, Computer-Assisted', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D017785', 'descriptor_name': 'Photons', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D014057', 'descriptor_name': 'Tomography, X-Ray Computed', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 9, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1088/1361-6560/aaeaf2', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S20241394', 'display_name': 'Physics in Medicine and Biology', 'issn_l': '0031-9155', 'issn': ['0031-9155', '1361-6560'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320083', 'host_organization_name': 'IOP Publishing', 'host_organization_lineage': ['https://openalex.org/P4310311669', 'https://openalex.org/P4310320083'], 'host_organization_lineage_names': ['Institute of Physics', 'IOP Publishing'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://hal.science/hal-01760845', 'pdf_url': 'https://hal.science/hal-01760845/document', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': 'other-oa', 'license_id': 'https://openalex.org/licenses/other-oa', 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://hal.archives-ouvertes.fr/hal-01760845v3/file/OneStepComparison.pdf', 'pdf_url': 'https://hal.archives-ouvertes.fr/hal-01760845v3/file/OneStepComparison.pdf', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://hal.science/hal-01760845v3/file/OneStepComparison.pdf', 'pdf_url': 'https://hal.science/hal-01760845v3/file/OneStepComparison.pdf', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://hal.science/hal-01760845v3/document', 'pdf_url': 'https://hal.science/hal-01760845v3/document', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://hal.archives-ouvertes.fr/hal-01760845v3/document', 'pdf_url': 'https://hal.archives-ouvertes.fr/hal-01760845v3/document', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://hal.archives-ouvertes.fr/hal-01760845/document', 'pdf_url': 'https://hal.archives-ouvertes.fr/hal-01760845/document', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'https://hal.archives-ouvertes.fr/hal-01760845v2/document', 'pdf_url': 'https://hal.archives-ouvertes.fr/hal-01760845v2/document', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/30465541', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://hal.science/hal-01760845', 'pdf_url': 'https://hal.science/hal-01760845/document', 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': 'other-oa', 'license_id': 'https://openalex.org/licenses/other-oa', 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, 'sustainable_development_goals': [{'score': 0.59, 'id': 'https://metadata.un.org/sdg/7', 'display_name': 'Affordable and clean energy'}], 'grants': [{'funder': 'https://openalex.org/F4320320883', 'funder_display_name': 'Agence Nationale de la Recherche', 'award_id': 'ANR-11-IDEX-0007'}, {'funder': 'https://openalex.org/F4320320883', 'funder_display_name': 'Agence Nationale de la Recherche', 'award_id': 'ANR-11-LABX-0063'}, {'funder': 'https://openalex.org/F4320337669', 'funder_display_name': 'H2020 European Institute of Innovation and Technology', 'award_id': '668142'}], 'datasets': [], 'versions': [], 'referenced_works_count': 38, 'referenced_works': ['https://openalex.org/W1972037630', 'https://openalex.org/W1972240851', 'https://openalex.org/W1973630522', 'https://openalex.org/W1981418870', 'https://openalex.org/W1997872530', 'https://openalex.org/W2007516869', 'https://openalex.org/W2046470130', 'https://openalex.org/W2048417186', 'https://openalex.org/W2055138517', 'https://openalex.org/W2059360236', 'https://openalex.org/W2071847032', 'https://openalex.org/W2082817771', 'https://openalex.org/W2084789529', 'https://openalex.org/W2085254266', 'https://openalex.org/W2086734311', 'https://openalex.org/W2092663520', 'https://openalex.org/W2110652437', 'https://openalex.org/W2128570468', 'https://openalex.org/W2140586694', 'https://openalex.org/W2143163922', 'https://openalex.org/W2154744699', 'https://openalex.org/W2168530812', 'https://openalex.org/W2300237018', 'https://openalex.org/W2300533347', 'https://openalex.org/W2405354898', 'https://openalex.org/W2529138537', 'https://openalex.org/W2540617239', 'https://openalex.org/W2562521985', 'https://openalex.org/W2728990294', 'https://openalex.org/W2734514690', 'https://openalex.org/W2740788754', 'https://openalex.org/W2768285201', 'https://openalex.org/W2785042966', 'https://openalex.org/W2792765328', 'https://openalex.org/W2963030250', 'https://openalex.org/W3106114270', 'https://openalex.org/W3160721492', 'https://openalex.org/W4254533685'], 'related_works': ['https://openalex.org/W3134728064', 'https://openalex.org/W2387685679', 'https://openalex.org/W2374214022', 'https://openalex.org/W2138031928', 'https://openalex.org/W2115238236', 'https://openalex.org/W2077506191', 'https://openalex.org/W2061980133', 'https://openalex.org/W2050855072', 'https://openalex.org/W2005493548', 'https://openalex.org/W1965977581'], 'abstract_inverted_index': {'Over': [0], 'the': [1, 93, 107, 222, 225, 244, 262, 341], 'last': [2], 'decade,': [3], 'dual-energy': [4], 'CT': [5, 19, 81, 112], 'scanners': [6, 20], 'have': [7, 59, 208], 'gone': [8], 'from': [9, 114], 'prototypes': [10], 'to': [11, 91, 105, 267, 343], 'clinically': [12], 'available': [13], 'machines,': [14], 'and': [15, 35, 50, 65, 78, 124, 155, 184, 296, 305, 318, 340], 'spectral': [16, 110], 'photon': [17], 'counting': [18], 'are': [21, 71], 'following.': [22], 'They': [23], 'require': [24], 'a': [25, 119, 130, 185, 191, 269], 'specific': [26], 'reconstruction': [27, 66, 83, 113], 'process,': [28], 'consisting': [29], 'of': [30, 96, 205, 236, 246, 264], 'two': [31], 'steps:': [32], 'material': [33], 'decomposition': [34, 48, 64, 122], 'tomographic': [36], 'reconstruction.': [37, 52], 'Image-based': [38], 'methods': [39, 46, 58, 70, 149, 207], 'perform': [40, 47, 63], 'reconstruction,': [41], 'then': [42, 51], 'decomposition,': [43], 'while': [44], 'projection-based': [45], 'first,': [49], 'As': [53], 'an': [54], 'alternative,': [55], "'one-step": [56], "inversion'": [57], 'been': [60, 209], 'proposed,': [61], 'which': [62, 133], 'simultaneously.': [67], 'Unfortunately,': [68], 'one-step': [69, 98], 'typically': [72], 'slower': [73], 'than': [74], 'their': [75], 'two-step': [76], 'counterparts,': [77], 'in': [79, 261], 'most': [80], 'applications,': [82], 'time': [84], 'is': [85, 227], 'critical.': [86], 'This': [87], 'paper': [88, 128], 'therefore': [89], 'proposes': [90], 'compare': [92], 'convergence': [94, 251], 'speeds': [95], 'five': [97, 115], 'algorithms.': [99], 'We': [100, 330], 'adapted': [101], 'all': [102, 217], 'these': [103, 206], 'algorithms': [104], 'solve': [106], 'same': [108], 'problem:': [109], 'photon-counting': [111], 'energy': [116], 'bins,': [117], 'using': [118, 212], 'three': [120, 148, 247], 'materials': [121, 224], 'basis': [123], 'spatial': [125], 'regularization.': [126], 'The': [127], 'compares': [129], 'Bayesian': [131], 'method': [132, 187], 'uses': [134], 'non-linear': [135], 'conjugate': [136], 'gradient': [137], 'for': [138], 'minimization': [139], '(Cai': [140], 'et': [141, 165, 175, 196, 275, 288, 307, 320], 'al': [142, 166, 176, 197, 276, 289, 308, 321], '2013': [143], 'Med.': [144, 160, 180, 200, 280, 291, 301, 324], 'Phys.': [145, 199, 292, 323], '40': [146, 293], '111916–31),': [147, 294], 'based': [150, 188], 'on': [151, 189, 250, 255], 'quadratic': [152], 'surrogates': [153], '(Long': [154], 'Fessler': [156, 297], '2014': [157], 'IEEE': [158, 178, 278, 299], 'Trans.': [159, 179, 279, 300], 'Imaging': [161, 171, 181, 281, 302, 313], '33': [162, 303], '1614–26,': [163], 'Weidinger': [164, 306], '2016': [167, 172, 198, 314], 'Int.': [168, 310], 'J.': [169, 311], 'Biomed.': [170, 312], '1–15,': [173], 'Mechlem': [174, 274], '2018': [177], '37': [182, 282], '68–80),': [183], 'primal-dual': [186], 'MOCCA,': [190], 'modified': [192], 'Chambolle–Pock': [193], 'algorithm': [194], '(Barber': [195], 'Biol.': [201, 325], '61': [202, 326], '3784).': [203], 'Some': [204], 'accelerated': [210], 'by': [211, 215], 'μ-preconditioning,': [213], 'i.e.': [214], 'performing': [216], 'internal': [218], 'computations': [219], 'not': [220], 'with': [221, 231], 'actual': [223], 'object': [226], 'made': [228], 'of,': [229], 'but': [230], 'carefully': [232], 'chosen': [233], 'linear': [234], 'combinations': [235], 'those.': [237], 'In': [238], 'this': [239], 'paper,': [240], 'we': [241], 'also': [242, 331], 'evaluated': [243], 'impact': [245], 'different': [248], 'μ-preconditioners': [249], 'speed.': [252], 'Our': [253], 'experiments': [254], 'simulated': [256], 'data': [257], 'revealed': [258], 'vast': [259], 'differences': [260], 'number': [263], 'iterations': [265], 'required': [266], 'reach': [268], 'common': [270], 'image': [271], 'quality': [272], 'objective:': [273], '(2018': [277], '68–80)': [283], 'needed': [284], 'ten': [285], 'iterations,': [286], 'Cai': [287], '(2013': [290], 'Long': [295], '(2014': [298], '1614–26)': [304], '(2016': [309, 322], '1–15)': [315], 'several': [316, 328], 'hundreds,': [317], 'Barber': [319], '3784)': [327], 'thousands.': [329], 'sum': [332], 'up': [333], 'other': [334], 'practical': [335], 'aspects,': [336], 'like': [337], 'memory': [338], 'footprint': [339], 'need': [342], 'tune': [344], 'extra': [345], 'parameters.': [346]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2796500552', 'counts_by_year': [{'year': 2024, 'cited_by_count': 9}, {'year': 2023, 'cited_by_count': 11}, {'year': 2022, 'cited_by_count': 14}, {'year': 2021, 'cited_by_count': 13}, {'year': 2020, 'cited_by_count': 12}, {'year': 2019, 'cited_by_count': 4}, {'year': 2018, 'cited_by_count': 1}], 'updated_date': '2025-01-10T12:59:37.235006', 'created_date': '2018-04-24'}