Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W4255276228', 'doi': 'https://doi.org/10.1109/nssmic.2002.1239665', 'title': 'Sampling considerations for high resolution small animal SPECT', 'display_name': 'Sampling considerations for high resolution small animal SPECT', 'publication_year': 2004, 'publication_date': '2004-03-22', 'ids': {'openalex': 'https://openalex.org/W4255276228', 'doi': 'https://doi.org/10.1109/nssmic.2002.1239665'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1109/nssmic.2002.1239665', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4393917042', 'display_name': 'IEEE Nuclear Science Symposium conference record', 'issn_l': '1095-7863', 'issn': ['1095-7863'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': None, 'host_organization_name': None, 'host_organization_lineage': [], 'host_organization_lineage_names': [], 'type': 'conference'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'proceedings-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5007755912', 'display_name': 'C. Damiani', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I201324441', 'display_name': 'University of Ferrara', 'ror': 'https://ror.org/041zkgm14', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I201324441']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'C. Damiani', 'raw_affiliation_strings': ['Physics Department and INFN, University of Ferrara, Ferrara, Italy'], 'affiliations': [{'raw_affiliation_string': 'Physics Department and INFN, University of Ferrara, Ferrara, Italy', 'institution_ids': ['https://openalex.org/I201324441']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5051435964', 'display_name': 'G. Di Domenico', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I201324441', 'display_name': 'University of Ferrara', 'ror': 'https://ror.org/041zkgm14', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I201324441']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'G. Di Domenico', 'raw_affiliation_strings': ['Physics Department and INFN, University of Ferrara, Ferrara, Italy'], 'affiliations': [{'raw_affiliation_string': 'Physics Department and INFN, University of Ferrara, Ferrara, Italy', 'institution_ids': ['https://openalex.org/I201324441']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5023987310', 'display_name': 'E. Moretti', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I201324441', 'display_name': 'University of Ferrara', 'ror': 'https://ror.org/041zkgm14', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I201324441']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'E. Moretti', 'raw_affiliation_strings': ['Department of Clinical and Experimental Medicine, Nuclear Medicine Section, University of Ferrara, Ferrara, Italy'], 'affiliations': [{'raw_affiliation_string': 'Department of Clinical and Experimental Medicine, Nuclear Medicine Section, University of Ferrara, Ferrara, Italy', 'institution_ids': ['https://openalex.org/I201324441']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5054817878', 'display_name': 'N. Sabba', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I201324441', 'display_name': 'University of Ferrara', 'ror': 'https://ror.org/041zkgm14', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I201324441']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'N. Sabba', 'raw_affiliation_strings': ['Department of Clinical and Experimental Medicine, Nuclear Medicine Section, University of Ferrara, Ferrara, Italy'], 'affiliations': [{'raw_affiliation_string': 'Department of Clinical and Experimental Medicine, Nuclear Medicine Section, University of Ferrara, Ferrara, Italy', 'institution_ids': ['https://openalex.org/I201324441']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5050089332', 'display_name': 'G. Zavattini', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I201324441', 'display_name': 'University of Ferrara', 'ror': 'https://ror.org/041zkgm14', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I201324441']}, {'id': 'https://openalex.org/I84218800', 'display_name': 'University of California, Davis', 'ror': 'https://ror.org/05rrcem69', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I84218800']}], 'countries': ['IT', 'US'], 'is_corresponding': False, 'raw_author_name': 'G. Zavattini', 'raw_affiliation_strings': ['Biomedical Engineering Department, University of California, Davis, CA, USA', 'Physics Department and INFN, University of Ferrara, Ferrara, Italy'], 'affiliations': [{'raw_affiliation_string': 'Physics Department and INFN, University of Ferrara, Ferrara, Italy', 'institution_ids': ['https://openalex.org/I201324441']}, {'raw_affiliation_string': 'Biomedical Engineering Department, University of California, Davis, CA, USA', 'institution_ids': ['https://openalex.org/I84218800']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5047363255', 'display_name': 'A. Del Guerra', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I108290504', 'display_name': 'University of Pisa', 'ror': 'https://ror.org/03ad39j10', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I108290504']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'A. Del Guerra', 'raw_affiliation_strings': ['Physics Department and INFN, University of Pisa, Pisa, Italy'], 'affiliations': [{'raw_affiliation_string': 'Physics Department and INFN, University of Pisa, Pisa, Italy', 'institution_ids': ['https://openalex.org/I108290504']}]}], 'institution_assertions': [], 'countries_distinct_count': 2, 'institutions_distinct_count': 3, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 1, 'citation_normalized_percentile': {'value': 0.363333, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 61, 'max': 68}, 'biblio': {'volume': None, 'issue': None, 'first_page': None, 'last_page': None}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10522', 'display_name': 'Medical Imaging Techniques and Applications', 'score': 0.9792, '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'}}, 'topics': [{'id': 'https://openalex.org/T10522', 'display_name': 'Medical Imaging Techniques and Applications', 'score': 0.9792, '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/oversampling', 'display_name': 'Oversampling', 'score': 0.9597367}, {'id': 'https://openalex.org/keywords/aliasing', 'display_name': 'Aliasing', 'score': 0.6734973}, {'id': 'https://openalex.org/keywords/nyquist-frequency', 'display_name': 'Nyquist frequency', 'score': 0.46396104}], 'concepts': [{'id': 'https://openalex.org/C197323446', 'wikidata': 'https://www.wikidata.org/wiki/Q331222', 'display_name': 'Oversampling', 'level': 3, 'score': 0.9597367}, {'id': 'https://openalex.org/C205372480', 'wikidata': 'https://www.wikidata.org/wiki/Q210521', 'display_name': 'Image resolution', 'level': 2, 'score': 0.76452196}, {'id': 'https://openalex.org/C140779682', 'wikidata': 'https://www.wikidata.org/wiki/Q210868', 'display_name': 'Sampling (signal processing)', 'level': 3, 'score': 0.6967186}, {'id': 'https://openalex.org/C94915269', 'wikidata': 'https://www.wikidata.org/wiki/Q1834857', 'display_name': 'Detector', 'level': 2, 'score': 0.68953633}, {'id': 'https://openalex.org/C4069607', 'wikidata': 'https://www.wikidata.org/wiki/Q868732', 'display_name': 'Aliasing', 'level': 3, 'score': 0.6734973}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.6429653}, {'id': 'https://openalex.org/C160633673', 'wikidata': 'https://www.wikidata.org/wiki/Q355198', 'display_name': 'Pixel', 'level': 2, 'score': 0.6133614}, {'id': 'https://openalex.org/C55020928', 'wikidata': 'https://www.wikidata.org/wiki/Q3813865', 'display_name': 'Image quality', 'level': 3, 'score': 0.59947777}, {'id': 'https://openalex.org/C31972630', 'wikidata': 'https://www.wikidata.org/wiki/Q844240', 'display_name': 'Computer vision', 'level': 1, 'score': 0.5228384}, {'id': 'https://openalex.org/C154945302', 'wikidata': 'https://www.wikidata.org/wiki/Q11660', 'display_name': 'Artificial intelligence', 'level': 1, 'score': 0.49421385}, {'id': 'https://openalex.org/C98273374', 'wikidata': 'https://www.wikidata.org/wiki/Q1501757', 'display_name': 'Nyquist frequency', 'level': 3, 'score': 0.46396104}, {'id': 'https://openalex.org/C2779751349', 'wikidata': 'https://www.wikidata.org/wiki/Q1474480', 'display_name': 'Scanner', 'level': 2, 'score': 0.43250692}, {'id': 'https://openalex.org/C141379421', 'wikidata': 'https://www.wikidata.org/wiki/Q6094427', 'display_name': 'Iterative reconstruction', 'level': 2, 'score': 0.42342544}, {'id': 'https://openalex.org/C2776257435', 'wikidata': 'https://www.wikidata.org/wiki/Q1576430', 'display_name': 'Bandwidth (computing)', 'level': 2, 'score': 0.21094164}, {'id': 'https://openalex.org/C115961682', 'wikidata': 'https://www.wikidata.org/wiki/Q860623', 'display_name': 'Image (mathematics)', 'level': 2, 'score': 0.20641404}, {'id': 'https://openalex.org/C136536468', 'wikidata': 'https://www.wikidata.org/wiki/Q1225894', 'display_name': 'Undersampling', 'level': 2, 'score': 0.17981252}, {'id': 'https://openalex.org/C76155785', 'wikidata': 'https://www.wikidata.org/wiki/Q418', 'display_name': 'Telecommunications', 'level': 1, 'score': 0.0898585}, {'id': 'https://openalex.org/C106131492', 'wikidata': 'https://www.wikidata.org/wiki/Q3072260', 'display_name': 'Filter (signal processing)', 'level': 2, 'score': 0.06518504}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1109/nssmic.2002.1239665', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4393917042', 'display_name': 'IEEE Nuclear Science Symposium conference record', 'issn_l': '1095-7863', 'issn': ['1095-7863'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': None, 'host_organization_name': None, 'host_organization_lineage': [], 'host_organization_lineage_names': [], 'type': 'conference'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/2', 'display_name': 'Zero hunger', 'score': 0.64}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 4, 'referenced_works': ['https://openalex.org/W2051235626', 'https://openalex.org/W2103978661', 'https://openalex.org/W2175827134', 'https://openalex.org/W4302070335'], 'related_works': ['https://openalex.org/W970517458', 'https://openalex.org/W2895660689', 'https://openalex.org/W2347558790', 'https://openalex.org/W2176079168', 'https://openalex.org/W2100912434', 'https://openalex.org/W2088876879', 'https://openalex.org/W2059679977', 'https://openalex.org/W2023356733', 'https://openalex.org/W1982448694', 'https://openalex.org/W1792037624'], 'abstract_inverted_index': {'Using': [0], 'the': [1, 27, 44, 52, 59, 62, 70, 84, 87, 91, 95, 111, 134, 163, 196, 212, 221], 'small': [2], 'animal': [3], 'hybrid': [4], 'PET/SPECT': [5], 'scanner': [6], 'YAP-(S)PET': [7], 'we': [8, 34, 146, 154, 169, 181], 'demonstrate': [9, 118], 'how': [10, 119, 171], 'oversampling': [11, 38, 120, 172], 'is': [12], 'important': [13], 'to': [14, 26, 68, 191, 217, 226], 'improve': [15], 'both': [16], 'image': [17, 78, 101, 112, 174], 'quality': [18, 79, 175], 'and': [19, 80, 127], 'spatial': [20, 115, 165, 193, 222], 'resolution': [21, 137, 223], 'in': [22, 110], 'SPECT': [23], 'modality.': [24], 'Due': [25], 'planar': [28], 'configuration': [29], 'of': [30, 47, 61, 93, 136, 151, 199], 'our': [31, 200], 'pixellated': [32], 'detector': [33, 41, 53, 63], 'can': [35], 'easily': [36], 'perform': [37], 'by': [39, 185], 'shifting': [40], 'heads': [42], 'from': [43, 214], 'central': [45], 'position': [46], 'an': [48], 'amount': [49], 'smaller': [50], 'than': [51], 'pixel': [54], 'size.': [55], 'Oversampling,': [56], 'together': [57], 'with': [58, 162], 'knowledge': [60], 'response': [64, 198], 'function,': [65], 'allows': [66], 'us': [67], 'determine': [69], 'best': [71], 'sampling': [72, 139, 160, 213], 'step': [73, 140], 'as': [74, 190], 'a': [75, 177, 203], 'trade-off': [76], 'between': [77], 'acquisition': [81], 'time.': [82], 'In': [83, 132, 143], 'real': [85], 'case,': [86], 'more': [88, 96], 'one': [89, 97, 104], 'oversamples': [90], 'field': [92], 'view,': [94], 'reduces': [98], 'aliasing': [99], '(better': [100, 114], 'quality).': [102], 'Furthermore': [103], 'also': [105], 'introduces': [106], 'high': [107], 'frequency': [108, 166, 197], 'components': [109], 'spectrum': [113], 'resolution).': [116], 'To': [117], 'gives': [121], 'evident': [122], 'enhancements,': [123], 'studies': [124], 'on': [125], 'capillaries': [126], 'phantoms': [128], 'will': [129], 'be': [130], 'presented.': [131], 'particular': [133], 'trend': [135], 'vs': [138], 'are': [141], 'shown.': [142], 'this': [144], 'paper': [145], 'present': [147], 'two': [148], 'different': [149, 159], 'kinds': [150], 'results:': [152], 'first': [153], 'reconstruct': [155, 183], 'images': [156, 184], 'that': [157, 210], 'have': [158, 182], 'modalities,': [161], 'same': [164], 'cut-off;': [167], 'so': [168, 189], 'show': [170, 209], 'enhances': [173], 'for': [176], 'fixed': [178], 'resolution.': [179], 'Secondly': [180], 'recovering': [186], 'all': [187], 'frequencies': [188], 'enhance': [192], 'resolution,': [194], 'deconvolving': [195], 'system': [201], 'using': [202], 'standard': [204], 'FBP': [205], 'algorithm.': [206], 'The': [207], 'results': [208], 'increasing': [211], '2': [215], 'mm': [216, 219, 228], '0.5': [218], 'improves': [220], 'form': [224], '3.5': [225], '2.2': [227], '(FWHM).': [229]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W4255276228', 'counts_by_year': [], 'updated_date': '2024-12-10T16:40:23.802947', 'created_date': '2022-05-12'}