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Salvi M, De Santi B, Pop B, Bosco M, Giannini V, Regge D, Molinari F, Meiburger KM. Integration of Deep Learning and Active Shape Models for More Accurate Prostate Segmentation in 3D MR Images. J Imaging 2022; 8:133. [PMID: 35621897 PMCID: PMC9146644 DOI: 10.3390/jimaging8050133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 01/27/2023] Open
Abstract
Magnetic resonance imaging (MRI) has a growing role in the clinical workup of prostate cancer. However, manual three-dimensional (3D) segmentation of the prostate is a laborious and time-consuming task. In this scenario, the use of automated algorithms for prostate segmentation allows us to bypass the huge workload of physicians. In this work, we propose a fully automated hybrid approach for prostate gland segmentation in MR images using an initial segmentation of prostate volumes using a custom-made 3D deep network (VNet-T2), followed by refinement using an Active Shape Model (ASM). While the deep network focuses on three-dimensional spatial coherence of the shape, the ASM relies on local image information and this joint effort allows for improved segmentation of the organ contours. Our method is developed and tested on a dataset composed of T2-weighted (T2w) MRI prostatic volumes of 60 male patients. In the test set, the proposed method shows excellent segmentation performance, achieving a mean dice score and Hausdorff distance of 0.851 and 7.55 mm, respectively. In the future, this algorithm could serve as an enabling technology for the development of computer-aided systems for prostate cancer characterization in MR imaging.
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Affiliation(s)
- Massimo Salvi
- Biolab, PolitoBIOMed Lab, Department of Electronics and Telecommunications, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy; (M.S.); (B.P.); (F.M.)
| | - Bruno De Santi
- Multi-Modality Medical Imaging (M3I), Technical Medical Centre, University of Twente, PB217, 7500 AE Enschede, The Netherlands;
| | - Bianca Pop
- Biolab, PolitoBIOMed Lab, Department of Electronics and Telecommunications, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy; (M.S.); (B.P.); (F.M.)
| | - Martino Bosco
- Department of Pathology, Ospedale Michele e Pietro Ferrero, 12060 Verduno, Italy;
| | - Valentina Giannini
- Department of Surgical Sciences, University of Turin, 10126 Turin, Italy; (V.G.); (D.R.)
- Department of Radiology, Candiolo Cancer Institute, FPO-IRCCS, 10060 Candiolo, Italy
| | - Daniele Regge
- Department of Surgical Sciences, University of Turin, 10126 Turin, Italy; (V.G.); (D.R.)
- Department of Radiology, Candiolo Cancer Institute, FPO-IRCCS, 10060 Candiolo, Italy
| | - Filippo Molinari
- Biolab, PolitoBIOMed Lab, Department of Electronics and Telecommunications, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy; (M.S.); (B.P.); (F.M.)
| | - Kristen M. Meiburger
- Biolab, PolitoBIOMed Lab, Department of Electronics and Telecommunications, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy; (M.S.); (B.P.); (F.M.)
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Afifi AHAA, Etaby AN, Ahmad MAY, Farghaly YT. Value of diffusion weighted magnetic resonance imaging in the prediction of cancer prostate. ALEXANDRIA JOURNAL OF MEDICINE 2019. [DOI: 10.1016/j.ajme.2012.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Suh Y, Gandhi J, Joshi G, Lee MY, Weissbart SJ, Smith NL, Joshi G, Khan SA. Etiologic classification, evaluation, and management of hematospermia. Transl Androl Urol 2017; 6:959-972. [PMID: 29184797 PMCID: PMC5673809 DOI: 10.21037/tau.2017.06.01] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hematospermia is defined by the presence of blood in the semen typically occurring in men younger than 40 years of age. Symptoms can occur due to a multitude of reasons, but are usually benign and self-limiting, requiring no additional treatment or evaluation. Despite this, the condition often impairs quality of life due to associated anxiety and must be taken seriously by the patient and the physician, particularly if recurrent, refractory, and painful. The etiology of hematospermia can be classified into inflammatory, infectious, lithiasis, cystic, obstructive, tumoral, vascular, traumatic, iatrogenic, and systemic origin. Alternatively, it can also be divided into subcategories based on anatomical origins such as prostate, bladder, spermatic cord, seminal vesicles, or epididymis. A complete history and physician examination, laboratory testing, and a variety of invasive and non-invasive imaging and instrumentation modalities can help to identify and treat the underlying pathology promptly.
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Affiliation(s)
- Yiji Suh
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Jason Gandhi
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA.,Medical Student Research Institute, St. George's University School of Medicine, Grenada, West Indies
| | - Gunjan Joshi
- Department of Internal Medicine, Stony Brook Medicine at Southampton Hospital, Southampton, NY, USA
| | - Min Yea Lee
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Steven J Weissbart
- Department of Urology, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | | | - Gargi Joshi
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Sardar Ali Khan
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, USA.,Department of Urology, Stony Brook University School of Medicine, Stony Brook, NY, USA
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