Fluctuation in measurements of pulmonary nodule under tidal volume ventilation on four-dimensional computed tomography: preliminary results

Tateishi, Ukihide; Tsukagoshi, Shinsuke; Inokawa, Hiroyasu; Okumura, Mutsuko; Moriyama, Noriyuki

doi:10.1007/s00330-008-1002-1

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…The subsolid nodule has been associated with slow growth whose detection has been hindered by poorly defi ned nature. The precision of measuring the volumes of subsolid nodules, These processes may increase the variability (reduce the precision) of nodule volume measurement (43)(44)(45).…”

Section: Discussionmentioning

confidence: 99%

Pulmonary Nodules: Growth Rate Assessment in Patients by Using Serial CT and Three-dimensional Volumetry

Berman²,

Kaur³

et al. 2012

Radiology

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Section: Discussionmentioning

confidence: 99%

Pulmonary Nodules: Growth Rate Assessment in Patients by Using Serial CT and Three-dimensional Volumetry

Berman²,

Kaur³

et al. 2012

Radiology

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“…Breathing artefacts are related to overestimating volume and increased measurement variability of volumetry tools [ 12 , 16 , 20 , 43 , 99 , 104 , 115 , 116 ]. This effect is most significant at the end of expiration and for smaller nodules but is considered unlikely to be clinically relevant [ 12 , 16 , 20 , 115 ].…”

Section: Resultsmentioning

confidence: 99%

Factors influencing the outcome of volumetry tools for pulmonary nodule analysis: a systematic review and attempted meta-analysis

Guedes Pinto,

Penha,

Ravara

et al. 2023

Insights Imaging

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Health systems worldwide are implementing lung cancer screening programmes to identify early-stage lung cancer and maximise patient survival. Volumetry is recommended for follow-up of pulmonary nodules and outperforms other measurement methods. However, volumetry is known to be influenced by multiple factors. The objectives of this systematic review (PROSPERO CRD42022370233) are to summarise the current knowledge regarding factors that influence volumetry tools used in the analysis of pulmonary nodules, assess for significant clinical impact, identify gaps in current knowledge and suggest future research. Five databases (Medline, Scopus, Journals@Ovid, Embase and Emcare) were searched on the 21st of September, 2022, and 137 original research studies were included, explicitly testing the potential impact of influencing factors on the outcome of volumetry tools. The summary of these studies is tabulated, and a narrative review is provided. A subset of studies (n = 16) reporting clinical significance were selected, and their results were combined, if appropriate, using meta-analysis. Factors with clinical significance include the segmentation algorithm, quality of the segmentation, slice thickness, the level of inspiration for solid nodules, and the reconstruction algorithm and kernel in subsolid nodules. Although there is a large body of evidence in this field, it is unclear how to apply the results from these studies in clinical practice as most studies do not test for clinical relevance. The meta-analysis did not improve our understanding due to the small number and heterogeneity of studies testing for clinical significance. Critical relevance statement Many studies have investigated the influencing factors of pulmonary nodule volumetry, but only 11% of these questioned their clinical relevance in their management. The heterogeneity among these studies presents a challenge in consolidating results and clinical application of the evidence. Key points • Factors influencing the volumetry of pulmonary nodules have been extensively investigated. • Just 11% of studies test clinical significance (wrongly diagnosing growth). • Nodule size interacts with most other influencing factors (especially for smaller nodules). • Heterogeneity among studies makes comparison and consolidation of results challenging. • Future research should focus on clinical applicability, screening, and updated technology. Graphical abstract

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Evaluation and management of pulmonary nodules: state-of-the-art and future perspectives

Sayyouh¹,

Vummidi²,

Kazerooni³

2013

Expert Opinion on Medical Diagnostics

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There are set of criteria that define a benign nodule, the most important of which are the lack of temporal change for 2 years or more, and certain benign imaging criteria, including specific patterns of calcification or the presence of fat. Although some indeterminate pulmonary nodules are immediately actionable, generally those approaching 1 cm or larger in diameter, at which size the diagnostic accuracy of tools such as positron emission tomography (PET)/CT, single photon emission CT (SPECT) and biopsy techniques are sufficient to warrant their use. The majority of indeterminate pulmonary nodules are under 1 cm, for which serial CT examinations through at least 2 years for solid nodules and 3 years for ground-glass nodules, are used to demonstrate either benign biologic behavior or otherwise. The management of incidental pulmonary nodules involves a multidisciplinary approach in which radiology plays a pivotal role. Newer imaging and postprocessing techniques have made this a more accurate technique eliminating ambiguity and unnecessary follow-up.

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Fluctuation in measurements of pulmonary nodule under tidal volume ventilation on four-dimensional computed tomography: preliminary results

Cited by 3 publications

References 18 publications

Pulmonary Nodules: Growth Rate Assessment in Patients by Using Serial CT and Three-dimensional Volumetry

Pulmonary Nodules: Growth Rate Assessment in Patients by Using Serial CT and Three-dimensional Volumetry

Factors influencing the outcome of volumetry tools for pulmonary nodule analysis: a systematic review and attempted meta-analysis

Evaluation and management of pulmonary nodules: state-of-the-art and future perspectives

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