PERITONEAL CARCINOMATOSIS SECONDARY TO OVARIAN CANCER: IMAGING FINDINGS

2021 ◽  
pp. 15-17
Author(s):  
Nataly Sofia Valdiviezo Allauca ◽  
Selene Alexandra López Orozco ◽  
Astrid Estefanía Negrete Burbano ◽  
Leonidas Alejandro Silva Ortiz
Keyword(s):  
Ovarian Cancer ◽  
Germ Cell Tumors ◽  
Medical Personnel ◽  
Ovarian Metastasis ◽  
Stage Iii ◽  
Cancer Metastases ◽  
Positron Emission ◽  
Impact On Treatment ◽  
Magnetic Resonance Imaging Mri ◽  
Sinus Tumor

Summary: Peritoneal lesions are a relatively common site of metastases, particularly from tumors of the abdomen and pelvis, which generally carry a poor prognosis, often with a signicant impact on treatment. One of the tumors implicated in peritoneal metastasis is ovarian cancer. Ovarian cancer is the fth most commonly diagnosed cancer among women worldwide and the second most common gynecologic malignancy. Despite clinical screening, ovarian cancer in more than 60% of those affected is diagnosed at an advanced stage with a reported 5-year survival rate of 37% (stage III disease) or 25% (stage III disease). IV). Therefore, ovarian cancer is one of the deadliest cancers affecting women. Ovarian tumors are classied according to the origin of the tumor into epithelial tumors (serous and mucinous tumors, endometrioid and clear cell carcinomas, Brenner's tumor), germ cell tumors (mature and immature teratomas, dysgerminoma, endodermal sinus tumor, carcinoma embryonic), sex cord - stromal tumors (brothecoma; granulosa cell, sclerosing stroma and Sertoli-Leydig cell tumors) and metastatic tumors. Metastases to the ovary are relatively common with a documented incidence of 5% to 30% of all malignant ovarian masses. Ovarian cancer metastases differ from other tumors: they are primarily peritoneal rather than parenchymal in location. These implants are usually isodense in tomography, in relation to the viscera, which makes their detection difcult. For this, a multidisciplinary approach is used, such as physical examination, tumor marker levels and diagnostic images. Such as CT, magnetic resonance imaging (MRI) and positron emission tomography (PET). Objective: Describes ovarian metastasis in a patient with no signicant history, emphasizing peritoneal lesions, through a clinical case. Design: Prospective, observational in a single center. Methodology: This is a systematic review of ovarian metastasis, detailing its clinical characteristics and short-term complications. The information and images obtained belong to the medical personnel in charge of the case, whose reinforcements are provided by the Excel, Word and JPG statistical package.

scholarly journals Radiomics Analysis in Ovarian Cancer: A Narrative Review

2021 ◽  
Vol 11 (17) ◽  
pp. 7833
Author(s):  
Francesca Arezzo ◽  
Vera Loizzi ◽  
Daniele La Forgia ◽  
Marco Moschetta ◽  
Alberto Stefano Tagliafico ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Narrative Review ◽  
Current Evidence ◽  
Resonance Imaging ◽  
Gynecological Malignancy ◽  
Diagnosis And Prognosis ◽  
Positron Emission ◽  
The Us ◽  
Magnetic Resonance Imaging Mri ◽  
Insight Into

Ovarian cancer (OC) is the second most common gynecological malignancy, accounting for about 14,000 deaths in 2020 in the US. The recognition of tools for proper screening, early diagnosis, and prognosis of OC is still lagging. The application of methods such as radiomics to medical images such as ultrasound scan (US), computed tomography (CT), magnetic resonance imaging (MRI), or positron emission tomography (PET) in OC may help to realize so-called “precision medicine” by developing new quantification metrics linking qualitative and/or quantitative data imaging to achieve clinical diagnostic endpoints. This narrative review aims to summarize the applications of radiomics as a support in the management of a complex pathology such as ovarian cancer. We give an insight into the current evidence on radiomics applied to different imaging methods.

Wavelet and Curvelet Transforms for Biomedical Image Processing

2018 ◽  
pp. 95-129 ◽  
Author(s):  
Manas Saha ◽  
Mrinal Kanti Naskar ◽  
B. N. Chatterji
Keyword(s):  
Medical Personnel ◽  
Theoretical Background ◽  
Emission Tomography ◽  
Ct Image ◽  
Biomedical Image Processing ◽  
Biomedical Image ◽  
Positron Emission ◽  
The Difference ◽  
Magnetic Resonance Imaging Mri

This chapter introduces two mathematical transforms—wavelet and curvelet—in the field of biomedical imaging. Presenting the theoretical background with relevant properties, the applications of the two transforms are presented. The biomedical applications include heart sound analysis, electrocardiography (ECG) characterization, positron emission tomography (PET) image analysis, medical image compression, mammogram enhancement, magnetic resonance imaging (MRI) and computer tomography (CT) image denoising, diabetic retinopathy detection. The applications emphasize the development of algorithms to diagnose human diseases, thereby rendering fast and reliable support to the medical personnel. The transforms—one classical (wavelet) and another contemporary (curvelet)—are selected to focus the difference in architecture, limitation, evolution, and application of individual transform. Two joint applications are addressed to compare their performance. This survey is also supplemented by a case study: mammogram denoising using wavelet and curvelet transforms with the underlying algorithms.

Imaging before cytoreductive surgery in advanced ovarian cancer patients

2019 ◽  
Vol 30 (1) ◽  
pp. 133-138 ◽  
Author(s):  
Stefania Rizzo ◽  
Maria Del Grande ◽  
Lucia Manganaro ◽  
Andrea Papadia ◽  
Filippo Del Grande
Keyword(s):  
Ovarian Cancer ◽  
Cancer Patients ◽  
Cytoreductive Surgery ◽  
Operating Time ◽  
Advanced Ovarian Cancer ◽  
Standard Of Care ◽  
Ct Imaging ◽  
Hybrid Technique ◽  
Positron Emission ◽  
Magnetic Resonance Imaging Mri

Appropriate and accurate pre-operative imaging in epithelial ovarian cancer patients may allow selection of patients that may mostly benefit either from primary cytoreductive surgery or from neoadjuvant chemotherapy. If the patient is considered suitable for upfront surgery, pre-operative imaging may help in planning the surgical approach, to forecast the operating time, and to estimate the need for other consulting specialists. Currently, computed tomography (CT) imaging is the standard of care for pre-operative evaluation of ovarian cancer patients; however, advanced magnetic resonance imaging (MRI) is emerging as a technique that may overcome the limitations of CT imaging, especially for small peritoneal deposits in difficult-to-resect sites. Positron emission tomography (PET)-CT imaging in the pre-operative setting is currently limited, whereas the use of the new hybrid technique PET-MRI is still under evaluation. Since criteria that may preclude optimal cytoreductive surgery may vary, depending on the aggressiveness of the surgical procedure and surgeon skill, multidisciplinary consensus conferences are the ideal platform to evaluate extent of the disease and surgical strategy.

A Novel Secure and Robust encryption scheme for medical images

2020 ◽  
Vol 16 ◽  
Author(s):  
Siyamol Chirakkarottu ◽  
Sheena Mathew
Keyword(s):  
Medical Images ◽  
Technological Development ◽  
Imaging Techniques ◽  
Chaotic Map ◽  
Two Phase ◽  
Positron Emission ◽  
Medical Diagnostic ◽  
Wireless Medium ◽  
Health Care Applications ◽  
Magnetic Resonance Imaging Mri

Background: Medical imaging encloses different imaging techniques and processes to image the human body for medical diagnostic and treatment purposes. Hence it plays an important role to improve public health. The technological development in biomedical imaging specifically in X-ray, Computed Tomography (CT), nuclear ultrasound including Positron Emission Tomography (PET), optical and Magnetic Resonance Imaging (MRI) can provide valuable information unique to a person. Objective: In health care applications, the images are needed to be exchanged mostly over wireless medium. The diagnostic images with confidential information of a patient need to be protected from unauthorized access during transmission. In this paper, a novel encryption method is proposed to improve the security and integrity of medical images. Methods: Chaotic map along with DNA cryptography is used for encryption. The proposed method describes a two phase encryption of medical images. Results: Performance of the proposed method is also tested by various analysis metrics. Robustness of the method against different noises and attacks is analyzed. Conclusion: The results show that the method is efficient and well suitable to medical images.

Comparison Between 18F-Dopa and 18F-Fet PET/CT in Patients with Suspicious Recurrent High Grade Glioma: A Literature Review and Our Experience

2019 ◽  
Vol 12 (3) ◽  
pp. 220-228 ◽  
Author(s):  
Laura Evangelista ◽  
Lea Cuppari ◽  
Luisa Bellu ◽  
Daniele Bertin ◽  
Mario Caccese ◽  
...  
Keyword(s):  
Case Series ◽  
High Grade Glioma ◽  
High Grade ◽  
True Negative ◽  
Fet Pet ◽  
Positron Emission ◽  
Pet Ct ◽  
Magnetic Resonance Imaging Mri ◽  
Definition Of ◽  
Sensitivity Specificity

Purpose: The aims of the present study were to: 1- critically assess the utility of L-3,4- dihydroxy-6-18Ffluoro-phenyl-alanine (18F-DOPA) and O-(2-18F-fluoroethyl)-L-tyrosine (18F-FET) Positron Emission Tomography (PET)/Computed Tomography (CT) in patients with high grade glioma (HGG) and 2- describe the results of 18F-DOPA and 18F-FET PET/CT in a case series of patients with recurrent HGG. Methods: We searched for studies using the following databases: PubMed, Web of Science and Scopus. The search terms were: glioma OR brain neoplasm and DOPA OR DOPA PET OR DOPA PET/CT and FET OR FET PET OR FET PET/CT. From a mono-institutional database, we retrospectively analyzed the 18F-DOPA and 18F-FET PET/CT of 29 patients (age: 56 ± 12 years) with suspicious for recurrent HGG. All patients underwent 18F-DOPA or 18F-FET PET/CT for a multidisciplinary decision. The final definition of recurrence was made by magnetic resonance imaging (MRI) and/or multidisciplinary decision, mainly based on the clinical data. Results: Fifty-one articles were found, of which 49 were discarded, therefore 2 studies were finally selected. In both the studies, 18F-DOPA and 18F-FET as exchangeable in clinical practice particularly for HGG patients. From our institutional experience, in 29 patients, we found that sensitivity, specificity and accuracy of 18F-DOPA PET/CT in HGG were 100% (95% confidence interval- 95%CI - 81-100%), 63% (95%CI: 39-82%) and 62% (95%CI: 39-81%), respectively. 18F-FET PET/CT was true positive in 4 and true negative in 4 patients. Sensitivity, specificity and accuracy for 18F-FET PET/CT in HGG were 100%. Conclusion: 18F-DOPA and 18F-FET PET/CT have a similar diagnostic accuracy in patients with recurrent HGG. However, 18F-DOPA PET/CT could be affected by inflammation conditions (false positive) that can alter the final results. Large comparative trials are warranted in order to better understand the utility of 18F-DOPA or 18F-FET PET/CT in patients with HGG.

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