PTH-024 Novel capsule endoscope with 3D reconstruction and lesions size calculation: first study with MiroCam MC4000
| Autor: | Praful Patel, Imdadur Rahman, Timothy Keen, Esther Hawkes |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Endoscope Correlation coefficient Computer science 3D reconstruction Stereo matching Capsule Imaging phantom law.invention Lesion 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Capsule endoscopy law medicine 030211 gastroenterology & hepatology medicine.symptom Biomedical engineering |
| Zdroj: | Posters. |
| DOI: | 10.1136/gutjnl-2019-bsgabstracts.49 |
| Popis: | Introduction Lesions detected at capsule endoscopy currently can only be viewed by a 2D image and size estimated by subjective image perception. The MiroCam MC4000 uses stereo matching technology to enable reconstruction of selected images in 3D format to enable size calculation. The aim of this study was to assess the reliability of this novel capsule to reconstruct 3D images, and its ability to accurately calculate lesion size within a phantom model. Methods The MC4000 capsule was mounted on a modified plastic shaft with the receiver circuitry system attached. In-vitro measurements at various distances were undertaken on a phantom model with static 2D and 3D lesions with sizes between 5–25 mm. In addition, dynamic movements resembling capsule movement through the bowel was performed. The ability to reconstruct images in a 3D format, in addition to the accuracy of the size calculations within ± 10%, was assessed. Results All lesions within the phantom model were successfully reconstructed in 3D format. For static lesions the MC4000 capsules estimated measurements correlated highly with the known sizes (table 1, 2D lesions). The effective distance for accurate size measurement for the MC4000 capsule was 10 mm to 25 mm. In total 2D & 3D objects, 5 mm to 20 mm in size, were measured with an overall accuracy of 88.4% within this effective distance. There was statistically significant correlation between 2D and 3D lesion size and measured size for each distance (correlation coefficient 0.98–1, p Conclusions The MiroCam MC4000 capsule provides reconstructive technology with good size calculations. This novel function may allow more accurate interpretation of lesions identified during capsule endoscopy either for index lesions or when looking for follow up lesion sizes. Further adjustment to the software may be required to bring accuracy to an optimum level to allow further in-vivo studies. |
| Databáze: | OpenAIRE |
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