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Aleong AM, Berlin A, Borg J, Helou J, Beiki-Ardakani A, Rink A, Raman S, Chung P, Weersink RA. Rapid multi-catheter segmentation for magnetic resonance image-guided catheter-based interventions. Med Phys 2024. [PMID: 38713919 DOI: 10.1002/mp.17117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 04/02/2024] [Accepted: 04/18/2024] [Indexed: 05/09/2024] Open
Abstract
BACKGROUND Magnetic resonance imaging (MRI) is the gold standard for delineating cancerous lesions in soft tissue. Catheter-based interventions require the accurate placement of multiple long, flexible catheters at the target site. The manual segmentation of catheters in MR images is a challenging and time-consuming task. There is a need for automated catheter segmentation to improve the efficiency of MR-guided procedures. PURPOSE To develop and assess a machine learning algorithm for the detection of multiple catheters in magnetic resonance images used during catheter-based interventions. METHODS In this work, a 3D U-Net was trained to retrospectively segment catheters in scans acquired during clinical MR-guided high dose rate (HDR) prostate brachytherapy cases. To assess confidence in segmentation, multiple AI models were trained. On clinical test cases, average segmentation results were used to plan the brachytherapy delivery. Dosimetric parameters were compared to the original clinical plan. Data was obtained from 35 patients who underwent HDR prostate brachytherapy for focal disease with a total of 214 image volumes. 185 image volumes from 30 patients were used for training using a five-fold cross validation split to divide the data for training and validation. To generate confidence measures of segmentation accuracy, five trained models were generated. The remaining five patients (29 volumes) were used to test the performance of the trained model by comparison to manual segmentations of three independent observers and assessment of dosimetric impact on the final clinical brachytherapy plans. RESULTS The network successfully identified 95% of catheters in the test set at a rate of 0.89 s per volume. The multi-model method identified the small number of cases where AI segmentation of individual catheters was poor, flagging the need for user input. AI-based segmentation performed as well as segmentations by independent observers. Plan dosimetry using AI-segmented catheters was comparable to the original plan. CONCLUSION The vast majority of catheters were accurately identified by AI segmentation, with minimal impact on plan outcomes. The use of multiple AI models provided confidence in the segmentation accuracy and identified catheter segmentations that required further manual assessment. Real-time AI catheter segmentation can be used during MR-guided insertions to assess deflections and for rapid planning of prostate brachytherapy.
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Affiliation(s)
- Amanda M Aleong
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Alejandro Berlin
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Jette Borg
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Joelle Helou
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Akbar Beiki-Ardakani
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Alexandra Rink
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Srinivas Raman
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Peter Chung
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Robert A Weersink
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Radiation Medicine, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
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Park S, Beom DG, Bae EH, Kim SW, Kim DJ, Kim CS. Model-Based Needle Identification Using Image Analysis and Needle Library Matching for Ultrasound-Guided Kidney Biopsy: A Feasibility Study. ULTRASOUND IN MEDICINE & BIOLOGY 2023; 49:1699-1708. [PMID: 37137741 DOI: 10.1016/j.ultrasmedbio.2023.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 05/05/2023]
Abstract
OBJECTIVE The aim of the work described here was to determine the feasibility of using a novel biopsy needle detection technique that achieves high sensitivity and specificity in a trade-off of resolution, detectability and depth of imaging. METHODS The proposed needle detection method consists of a model-based image analysis, temporal needle projection and needle library matching: (i) Image analysis was formulated under the signal decomposition framework; (ii) temporal projection converted the time-resolved needle dynamics into a single image of the desired needle; and (iii) the enhanced needle structure was spatially refined by matching a long, straight linear object in the needle library. The efficacy was examined with respect to different needle visibility. RESULTS Our method effectively eliminated confounding effects of the background tissue artifacts more robustly than conventional methods, thus improving needle visibility even with the low contrast between the needle and tissue. The improvement in needle structure further resulted in an improvement in estimation performance for the trajectory angle and tip position. CONCLUSION Our three-step needle detection method can reliably detect needle position without the need for external devices, increasing the needle conspicuity and reducing motion sensitivity.
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Affiliation(s)
- Suhyung Park
- Department of Computer Engineering, Chonnam National University, Gwangju, Republic of Korea; Department of ICT Convergence System Engineering, Chonnam National University, Gwangju, Republic of Korea
| | - Dong Gyu Beom
- Department of Computer Engineering, Chonnam National University, Gwangju, Republic of Korea
| | - Eun Hui Bae
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea; Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Soo Wan Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea; Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Dong Joon Kim
- Department of Anesthesiology and Pain Medicine, Chosun University Medical School, Gwangju, Republic of Korea; Department of Anesthesiology and Pain Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Chang Seong Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea; Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea.
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Zheng Y, Jiang S, Yang Z, Wei L. Automatic needle detection using improved random sample consensus in CT image-guided lung interstitial brachytherapy. J Appl Clin Med Phys 2021; 22:121-131. [PMID: 33764659 PMCID: PMC8035571 DOI: 10.1002/acm2.13231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/19/2021] [Accepted: 02/06/2021] [Indexed: 11/15/2022] Open
Abstract
Purpose To develop a method for automatically detecting needles from CT images, which can be used in image‐guided lung interstitial brachytherapy to assist needle placement assessment and dose distribution optimization. Material and Methods Based on the preview model parameters evaluation, local optimization combining local random sample consensus, and principal component analysis, the needle shaft was detected quickly, accurately, and robustly through the modified random sample consensus algorithm. By tracing intensities along the axis, the needle tip was determined. Furthermore, multineedles in a single slice were segmented at once using successive inliers deletion. Results The simulation data show that the segmentation efficiency is much higher than the original random sample consensus and yet maintains a stable submillimeter accuracy. Experiments with physical phantom demonstrate that the segmentation accuracy of described algorithm depends on the needle insertion depth into the CT image. Application to permanent lung brachytherapy image is also validated, where manual segmentation is the counterparts of the estimated needle shape. Conclusions From the results, the mean errors in determining needle orientation and endpoint are regulated within 2° and 1 mm, respectively. The average segmentation time is 0.238 s per needle.
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Affiliation(s)
- Yongnan Zheng
- School of Mechanical Engineering, Tianjin University, Tianjin, China
| | - Shan Jiang
- School of Mechanical Engineering, Tianjin University, Tianjin, China
| | - Zhiyong Yang
- School of Mechanical Engineering, Tianjin University, Tianjin, China
| | - Lin Wei
- School of Mechanical Engineering, Tianjin University, Tianjin, China
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Daoud MI, Rohling RN, Salcudean SE, Abolmaesumi P. Needle detection in curvilinear ultrasound images based on the reflection pattern of circular ultrasound waves. Med Phys 2015; 42:6221-33. [DOI: 10.1118/1.4932214] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Mohammad I. Daoud
- Department of Computer Engineering, German Jordanian University, Amman 11180, Jordan
| | - Robert N. Rohling
- Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Septimiu E. Salcudean
- Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Purang Abolmaesumi
- Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
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