Hybrid PET/MRI co-segmentation based on joint fuzzy connectedness and graph cut

Sbei, Arafet; Barhoumi, Walid; Maksud, Philippe; Maktouf, Chokri

doi:10.1016/j.cmpb.2017.07.006

Cited by 11 publications

(3 citation statements)

References 47 publications

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“…Positron emission tomography can show the pathophysiologic characteristics of the lesion, and it is easier to find the lesion. However, radioactive tracers with high radiation are used in positron emission tomographic scans, 6,7 and inflammatory cells such as neutrophils in areas of inflammation will also accumulate the tracers. Conventional US provides a lot of useful information about tumors such as the tumor structure, blood supply, surrounding infiltration, and lymph node metastasis, but it lacks information on hardness.…”

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confidence: 99%

Transvaginal Real‐time Shear Wave Elastography in the Diagnosis of Cervical Disease

Liu

et al. 2019

J of Ultrasound Medicine

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Objectives-To explore the value of shear wave elastography in the diagnosis of cervical disease.Methods-This work was a retrospective analysis of 246 cases of cervical lesions confirmed by transvaginal conventional ultrasound, shear wave elastography, and a cytologic test. The lesions were divided into 2 groups according to the final pathologic results: a malignant cervical group and a benign cervical group. In addition, the normal cervix was set as the control group.Results-The maximum and mean shear wave velocity values AE SD were 5.24 AE 1.11 and 4.91 AE 1.12 m/s for the malignant cervical group, 3.93 AE 0.39 and 3.53 AE 0.52 m/s for the benign cervical group, and 3.27 AE 0.31 and 2.86 AE 0.23 m/s for the normal cervix, respectively. The areas under the receiver operating characteristic curves for the maximum and mean shear wave velocity in the differential diagnosis of a normal cervix and benign cervical tumors were 0.909 and 0.878 (both P < .001), whereas in the differential diagnosis of benign and malignant cervical tumors, they were 0.909 and 0.895 (both P < .001).Conclusions-Shear wave elastography can quantitatively analyze the elastic characteristics of cervical diseases, help differentially diagnose cervical diseases, accurately determine the extent of tumor invasion, and improve effective clinical staging and treatment.

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confidence: 99%

Transvaginal Real‐time Shear Wave Elastography in the Diagnosis of Cervical Disease

Liu

et al. 2019

J of Ultrasound Medicine

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“…Research is needed to further explore whether the threshold is related to additional tumor-related factors such as hypoxia, proliferation, and histological differences. Despite ongoing innovations [ 65 , 66 , 75 ], errors in automatically delineated target areas may still occur due to imprecise tumor boundaries, necessitating manual adjustments.…”

Section: Radiotherapy Planningmentioning

confidence: 99%

The use of PET/MRI in radiotherapy

Yan,

Yang

et al. 2024

Insights Imaging

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Positron emission tomography/magnetic resonance imaging (PET/MRI) is a hybrid imaging technique that quantitatively combines the metabolic and functional data from positron emission tomography (PET) with anatomical and physiological information from MRI. As PET/MRI technology has advanced, its applications in cancer care have expanded. Recent studies have demonstrated that PET/MRI provides unique advantages in the field of radiotherapy and has become invaluable in guiding precision radiotherapy techniques. This review discusses the rationale and clinical evidence supporting the use of PET/MRI for radiation positioning, target delineation, efficacy evaluation, and patient surveillance.Critical relevance statement This article critically assesses the transformative role of PET/MRI in advancing precision radiotherapy, providing essential insights into improved radiation positioning, target delineation, efficacy evaluation, and patient surveillance in clinical radiology practice.Key points• The emergence of PET/MRI will be a key bridge for precise radiotherapy.• PET/MRI has unique advantages in the whole process of radiotherapy.• New tracers and nanoparticle probes will broaden the use of PET/MRI in radiation.• PET/MRI will be utilized more frequently for radiotherapy. Graphical Abstract

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“…However, a one-to-one relationship between anatomical and functional images is not always appropriate [38]. When PET/CT or PET/MRI imaging is employed, BTV delineation should be obtained avoiding the use of the anatomical information provided by CT and MRI measurements or alternatively, the latter should be used very carefully [49]. For example, Yezzi et al [50] proposed ACs to simultaneously segment and register features from multimodal images.…”

Section: Introductionmentioning

confidence: 99%

A smart and operator independent system to delineate tumours in Positron Emission Tomography scans

Comelli

Stefano

Russo

et al. 2018

Computers in Biology and Medicine

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Positron Emission Tomography (PET) imaging has an enormous potential to improve radiation therapy treatment planning offering complementary functional information with respect to other anatomical imaging approaches. The aim of this study is to develop an operator independent, reliable, and clinically feasible system for biological tumour volume delineation from PET images. Under this design hypothesis, we combine several known approaches in an original way to deploy a system with a high level of automation. The proposed system automatically identifies the optimal region of interest around the tumour and performs a slice-by-slice marching local active contour segmentation. It automatically stops when a "cancer-free" slice is identified. User intervention is limited at drawing an initial rough contour around the cancer region. By design, the algorithm performs the segmentation minimizing any dependence from the initial input, so that the final result is extremely repeatable. To assess the performances under different conditions, our system is evaluated on a dataset comprising five synthetic experiments and fifty oncological lesions located in different anatomical regions (i.e. lung, head and neck, and brain) using PET studies with 18F-fluoro-2-deoxy-d-glucose and 11C-labeled Methionine radio-tracers. Results on synthetic lesions demonstrate enhanced performances when compared against the most common PET segmentation methods. In clinical cases, the proposed system produces accurate segmentations (average dice similarity coefficient: 85.36 ± 2.94%, 85.98 ± 3.40%, 88.02 ± 2.75% in the lung, head and neck, and brain district, respectively) with high agreement with the gold standard (determination coefficient R = 0.98). We believe that the proposed system could be efficiently used in the everyday clinical routine as a medical decision tool, and to provide the clinicians with additional information, derived from PET, which can be of use in radiation therapy, treatment, and planning.

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Hybrid PET/MRI co-segmentation based on joint fuzzy connectedness and graph cut

Cited by 11 publications

References 47 publications

Transvaginal Real‐time Shear Wave Elastography in the Diagnosis of Cervical Disease

Transvaginal Real‐time Shear Wave Elastography in the Diagnosis of Cervical Disease

The use of PET/MRI in radiotherapy

A smart and operator independent system to delineate tumours in Positron Emission Tomography scans

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