3D image reconstruction in the diagnosis of small-bowel masses

Emanuele Rondonotti, MD, PhD from Valduce Hospital in Como, Italy discusses his article “Utility of 3-dimensional image reconstruction in the diagnosis of small-bowel masses in capsule endoscopy (with video).”

The primary focus of this study was to evaluate whether “coupling” three-dimensional (3D) reconstructed video clips with their standard two-dimensional (2D) counterparts helps in distinguishing masses from bulges in small-bowel capsule endoscopy (SBCE).

In SBCE, differentiating masses ie, lesions of higher probability for neoplasia from mucosal bulges is a challenging task; recently, IT engineers presented software that enables 3D reconstruction has become available. We thought that its clinical validity should be put into the clinical test by examining the performance of its use with 2 different groups of SBCE reviewers, experts, and novices. The area under the receiver operating characteristic curve (AUC) was chosen to present the outcomes.

Figure 3

Figure 3. Two SBCE frames depicting a mass (A) and bulging (B) with their corresponding 55-degree 3D reconstruction. SBCE, small-bowel capsule endoscopy; 3D, three-dimensional.

The AUC for expert and novice reviewers with standard 2D video clips reviews was 0.74 and 0.5, respectively (P = .0053). The AUC for experts with 2D+3D was 0.70 (compared with standard 2D: P = .245) and 0.57 (compared with standard 2D: P = .049) for novices. AUC for experts and novices with 2D+3D was similar (P = .1846). Essentially, the adjunction of a 3D reconstruction to the standard 2D video reading platform does not improve the performance of expert SBCE readers, although it significantly increases the performance of novices in distinguishing masses from bulging.

We are keen to see this software included in the proprietary reviewing platforms of existing SBCE systems.

Read the abstract for this article here.

The information presented in Endoscopedia reflects the opinions of the authors and does not represent the position of the American Society for Gastrointestinal Endoscopy (ASGE). ASGE expressly disclaims any warranties or guarantees, expressed or implied, and is not liable for damages of any kind in connection with the material, information, or procedures set forth.

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