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Cardobi N, Nocini R, Molteni G, Favero V, Fior A, Marchioni D, Montemezzi S, D’Onofrio M. Path Tracing vs. Volume Rendering Technique in Post-Surgical Assessment of Bone Flap in Oncologic Head and Neck Reconstructive Surgery: A Preliminary Study. J Imaging 2023; 9:jimaging9020024. [PMID: 36826943 PMCID: PMC9967273 DOI: 10.3390/jimaging9020024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/15/2022] [Accepted: 12/26/2022] [Indexed: 01/22/2023] Open
Abstract
This study aims to compare a relatively novel three-dimensional rendering called Path Tracing (PT) to the Volume Rendering technique (VR) in the post-surgical assessment of head and neck oncologic surgery followed by bone flap reconstruction. This retrospective study included 39 oncologic patients who underwent head and neck surgery with free bone flap reconstructions. All exams were acquired using a 64 Multi-Detector CT (MDCT). PT and VR images were created on a dedicated workstation. Five readers, with different expertise in bone flap reconstructive surgery, independently reviewed the images (two radiologists, one head and neck surgeon and two otorhinolaryngologists, respectively). Every observer evaluated the images according to a 5-point Likert scale. The parameters assessed were image quality, anatomical accuracy, bone flap evaluation, and metal artefact. Mean and median values for all the parameters across the observer were calculated. The scores of both reconstruction methods were compared using a Wilcoxon matched-pairs signed rank test. Inter-reader agreement was calculated using Spearman's rank correlation coefficient. PT was considered significantly superior to VR 3D reconstructions by all readers (p < 0.05). Inter-reader agreement was moderate to strong across four out of five readers. The agreement was stronger with PT images compared to VR images. In conclusion, PT reconstructions are significantly better than VR ones. Although they did not modify patient outcomes, they may improve the post-surgical evaluation of bone-free flap reconstructions following major head and neck surgery.
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Affiliation(s)
- Nicolò Cardobi
- Radiology Unit, Department of Pathology and Diagnostics, University Hospital of Verona, Piazzale Aristide Stefani, 1, 37126 Verona, Italy
- Correspondence:
| | - Riccardo Nocini
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Verona, Piazzale Aristide Stefani, 1, 37126 Verona, Italy
| | - Gabriele Molteni
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Verona, Piazzale Aristide Stefani, 1, 37126 Verona, Italy
| | - Vittorio Favero
- Unit of Maxillo-Facial Surgery and Dentistry, University of Verona, P.le L.A. Scuro 10, 37134 Verona, Italy
| | - Andrea Fior
- Unit of Maxillo-Facial Surgery and Dentistry, University of Verona, P.le L.A. Scuro 10, 37134 Verona, Italy
| | - Daniele Marchioni
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Verona, Piazzale Aristide Stefani, 1, 37126 Verona, Italy
| | - Stefania Montemezzi
- Radiology Unit, Department of Pathology and Diagnostics, University Hospital of Verona, Piazzale Aristide Stefani, 1, 37126 Verona, Italy
| | - Mirko D’Onofrio
- Department of Radiology, G.B. Rossi University Hospital, University of Verona, 37134 Verona, Italy
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Brookmeyer C, Rowe SP, Chu LC, Fishman EK. Implementation of cinematic rendering of gastric masses into clinical practice: a pictorial review. ABDOMINAL RADIOLOGY (NEW YORK) 2022; 47:3386-3393. [PMID: 35819482 DOI: 10.1007/s00261-022-03604-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 01/18/2023]
Abstract
High-resolution CT is the gold standard diagnostic imaging study for staging of gastric malignancies. Cinematic rendering creates a photorealistic evaluation using the standard high-resolution CT volumetric data set. This novel display method offers unique possibilities for the evaluation of gastric masses. Here we present further observations of the role of cinematic rendering in the evaluation of gastric masses at a large tertiary care center. We offer three valuable teaching points for the application of the cinematic rendering for gastric masses with several case examples for each teaching point, discuss potential limitations of cinematic rendering, and review future directions for cinematic rendering in this setting.
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Affiliation(s)
- Claire Brookmeyer
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 601 N Caroline St, Baltimore, MD, 21287, USA.
| | - Steven P Rowe
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 601 N Caroline St, Baltimore, MD, 21287, USA
| | - Linda C Chu
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 601 N Caroline St, Baltimore, MD, 21287, USA
| | - Elliot K Fishman
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 601 N Caroline St, Baltimore, MD, 21287, USA
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