{"id":{"repo_id":"greece","oai_identifier":"oai:10442/0107"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/0107","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΔΙΕΡΕΥΝΗΣΗ ΦΥΣΙΚΟΓΕΩΜΕΤΡΙΚΩΝ ΠΑΡΑΜΕΤΡΩΝ ΓΙΑ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΤΗΣ ΑΚΤΙΝΟΓΡΑΦΙΑΣ","abstract":"PHOTOGRAPHIC CHARACTERISTICS, CHARACTERISTICS OF IMAGE TRANSFER AND MOTTLE HAVE BEEN INVESTIGATED FOR SEVERAL SCREEN-FILM SYSTEMS. CALCULATIONS ON INFORMATION CAPACITY FOR SCREEN-FILM SYSTEMS HAVE BEEN CONDUCTED AND THE INTRODUCTION OF THE PARAMETER \"INFORMATION CAPACITY PER UNIT AREA AND PER UNIT EXPOSURE\" HASBEEN PROPOSED. THE DEPENDENCE OF THE EFFECTIVE AND EQUIVALENT FOCAL SPOT SIZEON THE EXPOSURE CONDITIONS HAVE BEEN STUDIED AND THEIR SIGNIFICANCE IN RADIOGRAPHIC IMAGING HAVE BEEN ANALYZED. IN CLOSING, PHYSICAL PARAMETERS ON THE QUALITY OF X-RAY IMAGES AND THEIR DEPENDENCE ON EXPOSURE CONDITIONS HAVE BEEN STUDIED WITH THE USE OF A PHANTOM, IN CONVENTIONAL AND SUPERVOLTAGE RADIOGRAPHY.","abstract_html":"PHOTOGRAPHIC CHARACTERISTICS, CHARACTERISTICS OF IMAGE TRANSFER AND MOTTLE HAVE BEEN INVESTIGATED FOR SEVERAL SCREEN-FILM SYSTEMS. CALCULATIONS ON INFORMATION CAPACITY FOR SCREEN-FILM SYSTEMS HAVE BEEN CONDUCTED AND THE INTRODUCTION OF THE PARAMETER "INFORMATION CAPACITY PER UNIT AREA AND PER UNIT EXPOSURE" HASBEEN PROPOSED. THE DEPENDENCE OF THE EFFECTIVE AND EQUIVALENT FOCAL SPOT SIZEON THE EXPOSURE CONDITIONS HAVE BEEN STUDIED AND THEIR SIGNIFICANCE IN RADIOGRAPHIC IMAGING HAVE BEEN ANALYZED. IN CLOSING, PHYSICAL PARAMETERS ON THE QUALITY OF X-RAY IMAGES AND THEIR DEPENDENCE ON EXPOSURE CONDITIONS HAVE BEEN STUDIED WITH THE USE OF A PHANTOM, IN CONVENTIONAL AND SUPERVOLTAGE RADIOGRAPHY.","abstract_has_math":false,"creators":["Παναγιωτάκης, Γεώργιος"],"institution":"University of Patras","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1986,"date_issued":"1986","date_published":"1986","updated_at":"2026-07-24T02:24:43Z","subjects":["ΑΚΤΙΝΟΓΡΑΦΙΚΗ ΕΙΚΟΝΑ","ΑΚΤΙΝΟΓΡΑΦΙΚΟΣ ΘΟΡΥΒΟΣ","Αντίθεση","ΕΝΙΣΧΥΤΙΚΗ ΠΙΝΑΚΙΔΑ-ΦΙΛΜ","Εύρος","ΜΕΓΕΘΟΣ ΕΣΤΙΑΣ","Ποιοτικός έλεγχος","Συνάρτηση Μεταφοράς Διαμόρφωσης","Χαρακτηριστική καμπύλη","ΧΩΡΗΤΙΚΟΤΗΤΑ ΠΛΗΡΟΦΟΡΙΑΣ","Characteristic curve","Contrast","FOCAL SPOT SIZE","INFORMATION CAPACITY","INTENSIFYING SCREEN-FILM","LATITUDE","Modulation transfer function","Quality control","RADIOGRAPHIC IMAGE","RADIOGRAPHIC NOISE","Ιατρική και Επιστήμες Υγείας","Κλινική Ιατρική","Medical and Health Sciences","Clinical Medicine"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/0107"],"render_values":[{"text":"10.12681/eadd/0107","href":"https://doi.org/10.12681/eadd/0107","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/0107","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Παναγιωτάκης, Γεώργιος"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1986"]},{"key":"dc:publisher","label":"Institution","values":["University of Patras","Πανεπιστήμιο Πατρών"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["ΑΚΤΙΝΟΓΡΑΦΙΚΗ ΕΙΚΟΝΑ","ΑΚΤΙΝΟΓΡΑΦΙΚΟΣ ΘΟΡΥΒΟΣ","Αντίθεση","ΕΝΙΣΧΥΤΙΚΗ ΠΙΝΑΚΙΔΑ-ΦΙΛΜ","Εύρος","ΜΕΓΕΘΟΣ ΕΣΤΙΑΣ","Ποιοτικός έλεγχος","Συνάρτηση Μεταφοράς Διαμόρφωσης","Χαρακτηριστική καμπύλη","ΧΩΡΗΤΙΚΟΤΗΤΑ ΠΛΗΡΟΦΟΡΙΑΣ","Characteristic curve","Contrast","FOCAL SPOT SIZE","INFORMATION CAPACITY","INTENSIFYING SCREEN-FILM","LATITUDE","Modulation transfer function","Quality control","RADIOGRAPHIC IMAGE","RADIOGRAPHIC NOISE","Ιατρική και Επιστήμες Υγείας","Κλινική Ιατρική","Medical and Health Sciences","Clinical Medicine"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/0107","http://hdl.handle.net/10442/hedi/0107"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["PHOTOGRAPHIC CHARACTERISTICS, CHARACTERISTICS OF IMAGE TRANSFER AND MOTTLE HAVE BEEN INVESTIGATED FOR SEVERAL SCREEN-FILM SYSTEMS. CALCULATIONS ON INFORMATION CAPACITY FOR SCREEN-FILM SYSTEMS HAVE BEEN CONDUCTED AND THE INTRODUCTION OF THE PARAMETER \"INFORMATION CAPACITY PER UNIT AREA AND PER UNIT EXPOSURE\" HASBEEN PROPOSED. THE DEPENDENCE OF THE EFFECTIVE AND EQUIVALENT FOCAL SPOT SIZEON THE EXPOSURE CONDITIONS HAVE BEEN STUDIED AND THEIR SIGNIFICANCE IN RADIOGRAPHIC IMAGING HAVE BEEN ANALYZED. IN CLOSING, PHYSICAL PARAMETERS ON THE QUALITY OF X-RAY IMAGES AND THEIR DEPENDENCE ON EXPOSURE CONDITIONS HAVE BEEN STUDIED WITH THE USE OF A PHANTOM, IN CONVENTIONAL AND SUPERVOLTAGE RADIOGRAPHY.","ΔΙΕΡΕΥΝΩΝΤΑΙ ΦΩΤΟΓΡΑΦΙΚΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ, ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΜΕΤΑΦΟΡΑΣ ΕΙΚΟΝΑΣ ΚΑΙ ΑΚΤΙΝΟΓΡΑΦΙΚΟΥ ΘΟΡΥΒΟΥ ΓΙΑ ΔΙΑΦΟΡΑ ΣΥΣΤΗΜΑΤΑ ΕΝΙΣΧΥΤΙΚΗΣ ΠΙΝΑΚΙΔΑΣ - ΦΙΛΜ. ΓΙΝΕΤΑΙ ΕΚΤΙΜΗΣΗ ΤΗΣ ΧΩΡΗΤΙΚΟΤΗΤΑΣ ΠΛΗΡΟΦΟΡΙΑΣ ΔΙΑΦΟΡΩΝ ΣΥΣΤΗΜΑΤΩΝ ΕΝΩ ΠΡΟΤΕΙΝΕΤΑΙ Η ΚΑΘΙΕΡΩΣΗ ΤΗΣ ΠΑΡΑΜΕΤΡΟΥ \"ΧΩΡΗΤΙΚΟΤΗΤΑ ΠΛΗΡΟΦΟΡΙΑΣ ΑΝΑ ΜΟΝΑΔΑ ΕΜΒΑΔΟΥ ΚΑΙ ΑΝΑ ΜΟΝΑΔΑ ΕΚΘΕΣΗΣ\". ΜΕΛΕΤΑΤΑΙ Η ΕΞΑΡΤΗΣΗ ΤΟΥ ΕΝΕΡΓΟΥ ΚΑΙ ΙΣΟΔΥΝΑΜΟΥ ΜΕΓΕΘΟΥΣ ΤΗΣ ΕΣΤΙΑΣ ΑΠΟ ΤΙΣ ΣΥΝΘΗΚΕΣ ΕΚΘΕΣΗΣ ΚΑΙ ΑΝΑΛΥΕΤΑΙ Η ΣΗΜΑΣΙΑ ΤΟΥΣ ΓΙΑ ΤΗΝ ΑΚΤΙΝΟΓΡΑΦΙΚΗ ΑΠΕΙΚΟΝΙΣΗ. ΤΕΛΟΣ, ΜΕ ΤΗΝ ΑΚΤΙΝΟΓΡΑΦΗΣΗ ΠΡΟΤΥΠΟΥ ΑΝΤΙΚΕΙΜΕΝΟΥ ΜΕΛΕΤΩΝΤΑΙ ΦΥΣΙΚΕΣ ΠΑΡΑΜΕΤΡΟΙ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΑΚΤΙΝΟΓΡΑΦΙΑΣ ΚΑΙ Η ΕΞΑΡΤΗΣΗ ΤΟΥΣ ΑΠΟ ΤΙΣ ΣΥΝΘΗΚΕΣ ΕΚΘΕΣΗΣ ΣΤΗ ΣΥΜΒΑΤΙΚΗ ΚΑΙ ΥΠΕΡΔΥΝΑΜΙΚΗ ΑΚΤΙΝΟΓΡΑΦΗΣΗ."]},{"key":"dc:title","label":"Title","values":["ΔΙΕΡΕΥΝΗΣΗ ΦΥΣΙΚΟΓΕΩΜΕΤΡΙΚΩΝ ΠΑΡΑΜΕΤΡΩΝ ΓΙΑ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΤΗΣ ΑΚΤΙΝΟΓΡΑΦΙΑΣ","AN INVESTIGATION OF PHYSICAL AND GEOMETRICAL PARAMETERS IN OPTIMIZING RADIOGRAPHIC IMAGING"]}]}],"canonical_facts":{"dc:creator":["Παναγιωτάκης, Γεώργιος"],"dc:date":["1986"],"dc:description":["PHOTOGRAPHIC CHARACTERISTICS, CHARACTERISTICS OF IMAGE TRANSFER AND MOTTLE HAVE BEEN INVESTIGATED FOR SEVERAL SCREEN-FILM SYSTEMS. CALCULATIONS ON INFORMATION CAPACITY FOR SCREEN-FILM SYSTEMS HAVE BEEN CONDUCTED AND THE INTRODUCTION OF THE PARAMETER \"INFORMATION CAPACITY PER UNIT AREA AND PER UNIT EXPOSURE\" HASBEEN PROPOSED. THE DEPENDENCE OF THE EFFECTIVE AND EQUIVALENT FOCAL SPOT SIZEON THE EXPOSURE CONDITIONS HAVE BEEN STUDIED AND THEIR SIGNIFICANCE IN RADIOGRAPHIC IMAGING HAVE BEEN ANALYZED. IN CLOSING, PHYSICAL PARAMETERS ON THE QUALITY OF X-RAY IMAGES AND THEIR DEPENDENCE ON EXPOSURE CONDITIONS HAVE BEEN STUDIED WITH THE USE OF A PHANTOM, IN CONVENTIONAL AND SUPERVOLTAGE RADIOGRAPHY.","ΔΙΕΡΕΥΝΩΝΤΑΙ ΦΩΤΟΓΡΑΦΙΚΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ, ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΜΕΤΑΦΟΡΑΣ ΕΙΚΟΝΑΣ ΚΑΙ ΑΚΤΙΝΟΓΡΑΦΙΚΟΥ ΘΟΡΥΒΟΥ ΓΙΑ ΔΙΑΦΟΡΑ ΣΥΣΤΗΜΑΤΑ ΕΝΙΣΧΥΤΙΚΗΣ ΠΙΝΑΚΙΔΑΣ - ΦΙΛΜ. ΓΙΝΕΤΑΙ ΕΚΤΙΜΗΣΗ ΤΗΣ ΧΩΡΗΤΙΚΟΤΗΤΑΣ ΠΛΗΡΟΦΟΡΙΑΣ ΔΙΑΦΟΡΩΝ ΣΥΣΤΗΜΑΤΩΝ ΕΝΩ ΠΡΟΤΕΙΝΕΤΑΙ Η ΚΑΘΙΕΡΩΣΗ ΤΗΣ ΠΑΡΑΜΕΤΡΟΥ \"ΧΩΡΗΤΙΚΟΤΗΤΑ ΠΛΗΡΟΦΟΡΙΑΣ ΑΝΑ ΜΟΝΑΔΑ ΕΜΒΑΔΟΥ ΚΑΙ ΑΝΑ ΜΟΝΑΔΑ ΕΚΘΕΣΗΣ\". ΜΕΛΕΤΑΤΑΙ Η ΕΞΑΡΤΗΣΗ ΤΟΥ ΕΝΕΡΓΟΥ ΚΑΙ ΙΣΟΔΥΝΑΜΟΥ ΜΕΓΕΘΟΥΣ ΤΗΣ ΕΣΤΙΑΣ ΑΠΟ ΤΙΣ ΣΥΝΘΗΚΕΣ ΕΚΘΕΣΗΣ ΚΑΙ ΑΝΑΛΥΕΤΑΙ Η ΣΗΜΑΣΙΑ ΤΟΥΣ ΓΙΑ ΤΗΝ ΑΚΤΙΝΟΓΡΑΦΙΚΗ ΑΠΕΙΚΟΝΙΣΗ. ΤΕΛΟΣ, ΜΕ ΤΗΝ ΑΚΤΙΝΟΓΡΑΦΗΣΗ ΠΡΟΤΥΠΟΥ ΑΝΤΙΚΕΙΜΕΝΟΥ ΜΕΛΕΤΩΝΤΑΙ ΦΥΣΙΚΕΣ ΠΑΡΑΜΕΤΡΟΙ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΑΚΤΙΝΟΓΡΑΦΙΑΣ ΚΑΙ Η ΕΞΑΡΤΗΣΗ ΤΟΥΣ ΑΠΟ ΤΙΣ ΣΥΝΘΗΚΕΣ ΕΚΘΕΣΗΣ ΣΤΗ ΣΥΜΒΑΤΙΚΗ ΚΑΙ ΥΠΕΡΔΥΝΑΜΙΚΗ ΑΚΤΙΝΟΓΡΑΦΗΣΗ."],"dc:identifier":["10.12681/eadd/0107","http://hdl.handle.net/10442/hedi/0107"],"dc:language":["gre"],"dc:publisher":["University of Patras","Πανεπιστήμιο Πατρών"],"dc:subject":["ΑΚΤΙΝΟΓΡΑΦΙΚΗ ΕΙΚΟΝΑ","ΑΚΤΙΝΟΓΡΑΦΙΚΟΣ ΘΟΡΥΒΟΣ","Αντίθεση","ΕΝΙΣΧΥΤΙΚΗ ΠΙΝΑΚΙΔΑ-ΦΙΛΜ","Εύρος","ΜΕΓΕΘΟΣ ΕΣΤΙΑΣ","Ποιοτικός έλεγχος","Συνάρτηση Μεταφοράς Διαμόρφωσης","Χαρακτηριστική καμπύλη","ΧΩΡΗΤΙΚΟΤΗΤΑ ΠΛΗΡΟΦΟΡΙΑΣ","Characteristic curve","Contrast","FOCAL SPOT SIZE","INFORMATION CAPACITY","INTENSIFYING SCREEN-FILM","LATITUDE","Modulation transfer function","Quality control","RADIOGRAPHIC IMAGE","RADIOGRAPHIC NOISE","Ιατρική και Επιστήμες Υγείας","Κλινική Ιατρική","Medical and Health Sciences","Clinical Medicine"],"dc:title":["ΔΙΕΡΕΥΝΗΣΗ ΦΥΣΙΚΟΓΕΩΜΕΤΡΙΚΩΝ ΠΑΡΑΜΕΤΡΩΝ ΓΙΑ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΤΗΣ ΑΚΤΙΝΟΓΡΑΦΙΑΣ","AN INVESTIGATION OF PHYSICAL AND GEOMETRICAL PARAMETERS IN OPTIMIZING RADIOGRAPHIC IMAGING"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:43Z"}