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PD-0230: Quantifying the impact of respiratory parameters in the spot scanning proton dose delivery
2015
Radiotherapy and Oncology
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The three markers were retrospectively automatically segmented on the CBCT projections using in-house developed software. ...
The toxicity was acceptable; however, longer follow up is needed. ...
doi:10.1016/s0167-8140(15)40228-2
fatcat:egtav7b36zdcrclw3rrt4ab4vy
Registration-Based Morphing of Active Contours for Segmentation of CT Scans
2004
Mathematical Biosciences and Engineering
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We present a new algorithm for segmenting organs in CT scans for radiotherapy treatment planning. ...
Given a contour of an organ that is segmented in one image, our algorithm proceeds to segment contours that identify the same organ in the consecutive images. ...
Levy was supported in part by the NSF under Career Grant DMS-0133511. ...
doi:10.3934/mbe.2005.2.79
pmid:20369913
fatcat:6hqm2bdn7vg3fmpce7u6ievrbm
3D Analysis of Radiofrequency-Ablated Tumors in Liver: A Computer-Aided Diagnosis Tool for Early Detection of Local Recurrences
[chapter]
2004
Lecture Notes in Computer Science
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Radiofrequency ablation is being used increasingly in the treatment of liver tumors, and the detection of local recurrences on follow-up imaging is an important and occasionally challenging task. ...
long-term follow-up CT interpretation. ...
Follow-up axial CT scans were acquired at months M=1, 5, 6, 9, 12 and 15 after the RF ablation of one active metastasis. ...
doi:10.1007/978-3-540-30136-3_129
fatcat:zyiyamufgjhkdcl4isscnjbhv4
A classifying registration technique for the estimation of enhancement curves of DCE-CT scan sequences
2010
Medical Image Analysis
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The technique is applied to DET-CT scan sequences and evaluated using ground truth data. ...
Due to this tree approach, the number of classes is set automatically and the whole technique is entirely unsupervised. ...
Such an approach requires a preliminary segmentation of images. But, in our DET-CT problem, it is difficult to obtain such a segmentation before image registration. ...
doi:10.1016/j.media.2009.12.002
pmid:20061177
fatcat:zz7zdjlqjzfltotbdktpgyi32u
Automatic Segmentation of Liver from Abdominal Computed Tomography Images using Energy Feature
2021
Computers Materials & Continua
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Liver Segmentation is one of the challenging tasks in detecting and classifying liver tumors from Computed Tomography (CT) images. ...
This paper proposes an algorithm for automatic seed point selection using energy feature for use in level set algorithm for segmentation of liver region in CT scans. ...
It offers the physician a better diagnosis and follows up in the patient's ailments. ...
doi:10.32604/cmc.2021.014347
fatcat:cvjlq77qjncozdicwghs2owoou
Application of the One-Stop Cardiac CT Scan on 256-Row Wide Detector Revolution CT in Myocardial Ischemia of Aortic Valve Degeneration Diagnosis
2019
Iranian Red Crescent Medical Journal
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detection of plaques in the three and six segments of coronary arteries (P < 0.05). ...
Conclusions: Both good CCTA and CT-MPI images can be obtained at the one-stop scanning by Revolution CT. This can be used for the diagnosis of AVD combined with myocardial ischemia. ...
in recent years The high-end CTs that have emerged one after another have achieved preliminary results in the clinical study of CT myocardial perfusion
Iran Red Crescent Med J. 2019; 21(3):e83343 ...
doi:10.5812/ircmj.83343
fatcat:jijcgqyizzgv7gbl335nkadylq
Comparison of pre/post-operative CT image volumes to preoperative digitization of partial hepatectomies: a feasibility study in surgical validation
2009
Medical Imaging 2009: Visualization, Image-Guided Procedures, and Modeling
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Semi-quantitative comparisons are presented in this work and preliminary results indicate that significant liver regeneration/hypertrophy in the postoperative CT images may be present post-operatively. ...
Preoperative computed tomography (CT) images acquired before surgery were used to identify tumor margins and to plan the surgical approach for resection of these tumors. ...
A level set based technique to segment the organ with minimal user interaction was used to segment the liver and tumor from the abdominal CT scan. ...
doi:10.1117/12.813771
dblp:conf/miigp/DumpuriCLWSGMD09
fatcat:yduv25a3i5fnzow3c3bwqbv24m
Metabolic Tumour Volume from PSMA PET/CT Scans of Prostate Cancer Patients during Chemotherapy—Do Different Software Solutions Deliver Comparable Results?
2020
Journal of Clinical Medicine
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Currently, it is unclear whether different software tools for assessing PSMA-TV and TL-PSMA produce comparable results. (2) Methods: 68Ga-PSMA PET/CT scans from n = 21 patients with castration-resistant ...
chemotherapy with changes in serum PSA (ΔPSA) and PERCIST (Positron Emission Response Criteria in Solid Tumors). (3) Results: Comparing absolute PSMA-TV and TL-PSMA as well as Bland–Altman plotting revealed ...
3 ) for follow-up PET/CT scans (p = 0.43). ...
doi:10.3390/jcm9051390
pmid:32397223
pmcid:PMC7290891
fatcat:zphil6frjzfovh7swwusqrsnke
Autonomous Real-Time Interventional Scan Plane Control With a 3-D Shape-Sensing Needle
2014
IEEE Transactions on Medical Imaging
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Scan planes calculated based on the FBG sensors successfully follow the tip of the needle. ...
Optical fiber strain sensors can estimate a needle's profile in real-time and be used for MRI scan plane control to potentially enable faster and more accurate physician response. ...
Worters for assistance in initial software methods for scan plane control; Dr. M. Alley for consultation on the GE Signa system and transforms concerning scanner and image coordinate frames; Dr. R. ...
doi:10.1109/tmi.2014.2332354
pmid:24968093
pmcid:PMC5026644
fatcat:joddgcuqkjbrjdrjmb2i5v4tpy
Segmentation of pathological liver tissue with Dilated Fully Convolutional Networks: A Preliminary Study
2019
2019 IEEE 6th Portuguese Meeting on Bioengineering (ENBENG)
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Experiments on the MICCAI Lits challenge dataset are described achieving segmentations with a mean Dice coefficients of 95.57% and 59.36% for the liver and liver tumour, using a total number 30 CT test ...
Segmentation of the liver in Computer Tomography (CT) images allows the extraction of the three-dimensional (3D) structure of the liver tissues in which the observation of their relative position to one ...
The authors also kindly thank Nvidia, for the contribution with one Nvidia Titan XP GPU, that was used in this work. ...
doi:10.1109/enbeng.2019.8692479
fatcat:aosdcsq7xzgzpnfyc7lyzvgteu
MORPHOLOGICAL SEGMENTATION OF THE KIDNEYS FROM ABDOMINAL CT IMAGES
2014
Journal of Mechanics in Medicine and Biology
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This method can be helpful for preliminary testing of CT scan images. Our proposed approach has been tested for many other images and it gives satisfactory results. ...
The liver is a common site for the tumors occurrence. Automatic hepatic lesion segmentation is a crucial step for diagnosis and surgery procedure. ...
[25] presents a system for automatic detection and segmentation of focal liver lesions in CT images. ...
doi:10.1142/s0219519414500730
fatcat:uvawsx7h65cgvd2wk5337527ia
PO-0754: Stereotactic radiotherapy of liver metastases: 4DCT treatment planning and MRI follow-up on normal tissue response
2013
Radiotherapy and Oncology
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and three different automatic segmentation methods of PET volumes were tested. ...
Results: For one patient, no hypoxia was observed. For eight patients, hypoxia was observed in the primary tumour and nodes, for two in the primary tumour only and for four in the nodes only. ...
Image fusion of the average treatment planning CT and kV-CBCT scans resulted in patient repositioning in a maximum of 6 mm magnitude per fraction. ...
doi:10.1016/s0167-8140(15)33060-7
fatcat:wp2xyogejfghlhycfr4aai3kxa
PO-0752: Reliability and feasibility of automatic segmentation in rectal cancer: a perspective study
2013
Radiotherapy and Oncology
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Treatment delivery was tracked with fiducials and the Synchrony system. ...
Median PTV volume = 32cc (Range= 6-1879cc).Prescription dose was 30-36Gy in 3-5# (BED using α/β=10, 48-79). Dose was prescribed to the Median 64% isodose line (Range 48-78%). ...
Image fusion of the average treatment planning CT and kV-CBCT scans resulted in patient repositioning in a maximum of 6 mm magnitude per fraction. ...
doi:10.1016/s0167-8140(15)33058-9
fatcat:rgwdu53fozg47bnloyv7ia33mi
Liver Tumor Segmentation based on Multi-scale Candidate Generation and Fractal Residual Network
2019
IEEE Access
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To this end, this paper proposes a liver tumor segmentation method on CT volumes using multi-scale candidate generation method (MCG), 3D fractal residual network (3D FRN), and active contour model (ACM ...
INDEX TERMS Fractal residual network, multi-scale candidate generation method, active contour model, liver tumor segmentation, CT volume. ...
[11] described a method to segment liver tumors by enhancing the CT scan contrast levels and expectation maximization of the posterior marginal. ...
doi:10.1109/access.2019.2923218
fatcat:ugxhljbxszcavcf4iexehbdaju
The Impact of 3-Dimensional Reconstructions on Operation Planning in Liver Surgery
2000
Archives of Surgery
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Results: The ability of correct tumor assignment to a liver segment was significantly correlated to the level of training (PϽ.05). ...
The tumors had to be assigned to a liver segment and subsequently drawn together with the operation proposal into a given liver model. ...
The particular task consists of the following steps: • Semiautomatic segmentation of liver parenchyma and hepatic tumor. • Automatic segmentation of the vascular trees. • Editing of the vascular trees ...
doi:10.1001/archsurg.135.11.1256
pmid:11074877
fatcat:jn7c3follnhhxjs7cebsyrmusy
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