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Da Rin G, Seghezzi M, Padoan A, Pajola R, Bengiamo A, Di Fabio AM, Dima F, Fanelli A, Francione S, Germagnoli L, Lorubbio M, Marzoni A, Pipitone S, Rolla R, Bagorria Vaca MDC, Bartolini A, Bonato L, Sciacovelli L, Buoro S. Multicentric evaluation of the variability of digital morphology performances also respect to the reference methods by optical microscopy. Int J Lab Hematol 2022; 44:1040-1049. [PMID: 35916349 DOI: 10.1111/ijlh.13943] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 07/04/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Despite the important diagnostic role of peripheral blood morphology, cell classification is subjective. Automated image-processing systems (AIS) provide more accurate and objective morphological evaluation. The aims of this multicenter study were the evaluation of the intra and inter-laboratory variation between different AIS in cell pre-classification and after reclassification, compared with manual optical microscopy, the reference method. METHODS Six peripheral blood samples were included in this study, for each sample, 70 May-Grunwald and Giemsa stained PB smears were prepared from each specimen and 10 slides were delivered to the seven laboratories involved. Smears were processed by both optical microscopy (OM) and AIS. In addition, the assessment times of both methods were recorded. RESULTS Within-laboratory Reproducibility ranged between 4.76% and 153.78%; between-laboratory Precision ranged between 2.10% and 82.2%, while Total Imprecision ranged between 5.21% and 20.60%. The relative Bland Altman bias ranged between -0.01% and 20.60%. The mean of assessment times were 326 ± 110 s and 191 ± 68 s for AIS post reclassification and OM, respectively. CONCLUSIONS AIS can be helpful when the number of cell counted are low and can give advantages in terms of efficiency, objectivity and time saving in the morphological analysis of blood cells. They can also help in the interpretation of some morphological features and can serve as learning and investigation tools.
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Affiliation(s)
- Giorgio Da Rin
- Laboratory Medicine, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Michela Seghezzi
- Clinical Chemistry Laboratory, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - Andrea Padoan
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Rachele Pajola
- UOC Clinical Chemistry Laboratory, Ospedali Riuniti Padova Sud Schiavonia, Veneto, Italy
| | - Anna Bengiamo
- Clinical Chemistry and Hematology Laboratory, University Hospital of Parma, Parma, Italy
| | | | - Francesco Dima
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
| | - Alessandra Fanelli
- Department of General Laboratory, Careggi University Hospital, Florence, Italy
| | - Sara Francione
- Department of Clinical Chemistry and Microbiology, Novara, Italy
| | - Luca Germagnoli
- Clinical Chemistry Laboratory, IRCCS Humanitas, Milan, Italy
| | - Maria Lorubbio
- Department of Laboratory and Transfusional Medicine, Careggi University Hospital, Florence, Italy
| | | | - Silvia Pipitone
- Clinical Chemistry and Hematology Laboratory, University Hospital of Parma, Parma, Italy
| | - Roberta Rolla
- Department of Health Sciences, University of Eastern Piedmont 'Amedeo Avogadro', Novara, Italy
| | | | | | | | - Laura Sciacovelli
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Sabrina Buoro
- Regional Reference Center for the Quality of Laboratory Medicine Services, Milan, Italy
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