scholarly journals An Overview on Image Registration Techniques for Cardiac Diagnosis and Treatment

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Azira Khalil ◽  
Siew-Cheok Ng ◽  
Yih Miin Liew ◽  
Khin Wee Lai

Image registration has been used for a wide variety of tasks within cardiovascular imaging. This study aims to provide an overview of the existing image registration methods to assist researchers and impart valuable resource for studying the existing methods or developing new methods and evaluation strategies for cardiac image registration. For the cardiac diagnosis and treatment strategy, image registration and fusion can provide complementary information to the physician by using the integrated image from these two modalities. This review also contains a description of various imaging techniques to provide an appreciation of the problems associated with implementing image registration, particularly for cardiac pathology intervention and treatments.

1993 ◽  
Vol 57 (supplementIV) ◽  
pp. 1290-1294
Author(s):  
Takashi Akasaka ◽  
Junichi Yoshikawa ◽  
Kiyoshi Yoshida ◽  
Masahiro Shakudo ◽  
Tsutomu Takagi

2015 ◽  
Vol 74 (6) ◽  
Author(s):  
Chieng Thion Ming ◽  
Zaid Omar ◽  
Nasrul Humaimi Mahmood ◽  
Suhaini Kadiman

A literature survey of Ultrasound and Computed Tomography (CT) -based cardiac image registration is presented in this article. We aim to provide the reader with a preliminary discussion into the area of cardiac image registration, as well as to briefly describe the major contributions in the field and present collective and comprehensive knowledge as guidelines for beginners in this field to initiate their research. We also highlight the major challenges where CT and Ultrasound are the modalities concerned in fusion and registration tasks. Further, we found that a majority of research in medical image registration are suitably categorized based on these factors: anatomy, imaging modality and image registration methods. Our focus in the article is on Ultrasound-CT image registration of the heart, where numerous algorithms under this scope have been elaborated. Overall, multimodal cardiac image registration offers great benefit for image visualization systems during surgery. It facilitates accurate alignment of the patient’s heart imagery acquired via different imaging sensors, without extensive user involvement and interception. Through registration, the combined anatomical and functional information from multiple modalities may be derived by the medical practitioner to aid in physiological understanding, disease monitoring, clinical treatment and diagnostic purposes.


2020 ◽  
Vol 92 (3) ◽  
pp. 92-97
Author(s):  
L. I. Dvoretskiy ◽  
V. V. Rezvan

The article presents modern data on the causes of platypnea, methods of its diagnosis and treatment. The data on the development of platypnea syndrome are given not only in cardiac pathology, but also in severe liver diseases with the development of hepatopulmonary syndrome and chronic obstructive pulmonary disease of a severe course.


2021 ◽  
Vol 6 (1) ◽  
pp. 21-26
Author(s):  
Emese Márton ◽  
Daniel Cernica ◽  
Cosmin Țolescu ◽  
Andrada Lupșan ◽  
Monica Chițu ◽  
...  

Abstract Various cardiovascular imaging techniques were developed for the detection of vulnerable atherosclerotic plaques, hoping to be able to predict a cardiovascular event. Plaque vulnerability results from compound pathophysiological mechanisms that lead to structural and morphological changes in lesions. The aim of this review is to present the most recent techniques for the assessment of vulnerable coronary plaques such as cardiac computed tomography angiography (CCTA), optical coherence tomography, or virtual histology intravascular ultra-sound, based on literature data from the last 3 years. CCTA permits direct visualization of the intravascular lumen, together with characterization of the arterial wall. Recent studies maintain that low-attenuation plaques, spotty calcifications, positive vessel remodeling, and the napkin-ring sign are considered main markers of plaque vulnerability and instability. Emerging analytical techniques, such as machine learning or radiomics, will probably demonstrate useful as an auxiliary diagnostic tool for vulnerable plaque detection. The data from the two imaging techniques together provide useful information, especially in patients undergoing a PCI procedure for an acute coronary syndrome. Invasive and noninvasive imaging techniques are able to deliver a large amount of scientific data to assess vulnerable coronary atheromatous plaques. Recent studies demonstrated that information defined by the two techniques is complementary, and using both methods is essential for adequate diagnosis, therapeutic strategy, and prognostic assessment.


2021 ◽  
Vol 17 ◽  
Author(s):  
Chuangui Sheng ◽  
Bo Wu ◽  
Lele Li ◽  
Yuliang Zhao

Background: Imaging of RNA in vivo is of great significance for elucidating their biological functions, revealing mechanisms behind disease, and for further diagnosis and treatment. Over the past decade, a variety of DNA-based molecular imaging techniques have been developed for RNA imaging in living cells. Nevertheless, non-invasive imaging of RNA in animals is still limited. Methods: An overview of the literature involving RNA imaging in vivo based on the integration of DNA probes with nanotechnology has been reviewed. Results: Attributed to DNA’s designability of sequences and specificity of recognition, molecular beacon, strand displacement and hybridization chain reaction would confer quick, efficient and specific response to target RNA. Multifunctional nanomaterials provide powerful support for the intracellular delivery of such DNA probes with spatiotemporal control over their sensing function, thereby achieving RNA imaging in vivo. Conclusion: Merging DNA probes with nanotechnology has gained substantial prospects for RNA imaging in vivo, which not only helps us to better elucidate biological functions of RNA, but also provides valuable information for further disease diagnosis and treatment.


Author(s):  
David A. Mitchell ◽  
Laura Mitchell ◽  
Lorna McCaul

Contents. Relevant pages in other chapters. Principal sources. Listen, look, and learn. Presenting complaint. The dental history. The medical history. Medical examinatio. Examination of the head and neck. Examination of the mouth. Investigations—general. Investigations—specific. Radiology and radiography. Advanced imaging techniques. Differential diagnosis and treatment plan.


Advances in ophthalmic imaging methods shed light on the management of retinal artery occlusion (RAO). RAT is an ocular emergency that can cause painless, sudden onset, unilateral vision, or loss of visual field. RAO requires early diagnosis and treatment. Fundus fluorescein angiography (FFA), which can be used in diagnosis and follow-up, is an invasive method requiring intravenous dye application which can cause side effects. In recent years, optical coherence tomography angiography (OCTA) has become widely available as an alternative to FFA in various ophthalmologic diseases. OCTA is a new type of angiography used for fundus imaging. It is a non-invasive method for measuring and quantifying the retinal microcirculation without the use of dyes. Many other imaging modalities used in ophthalmology clinics have been used in many areas of diagnosis and treatment of RAO patients. This review deals with the results of different imaging techniques in patients with RAO.


2019 ◽  
Vol 77 (3) ◽  
pp. 187-196 ◽  
Author(s):  
Michal Gonet ◽  
Boris Epel ◽  
Howard J. Halpern ◽  
Martyna Elas

Abstract This paper presents a survey of electron paramagnetic resonance (EPR) image registration. Image registration is the process of overlaying images (two or more) of the same scene taken at different times, from different viewpoints and/or different techniques. EPR-imaging (EPRI) techniques belong to the functional-imaging modalities and therefore suffer from a lack of anatomical reference which is mandatory in preclinical imaging. For this reason, it is necessary to merging EPR images with other modalities which allow for obtaining anatomy images. Methodological analysis and review of the literature were done, providing a summary for developing a good foundation for research study in this field which is crucial in understanding the existing levels of knowledge. Out of these considerations, the aim of this paper is to enhance the scientific community’s understanding of the current status of research in EPR preclinical image registration and also communicate to them the contribution of this research in the field of image processing.


2020 ◽  
Vol 13 (7) ◽  
pp. 1577-1590 ◽  
Author(s):  
Roshin C. Mathew ◽  
Jamieson M. Bourque ◽  
Michael Salerno ◽  
Christopher M. Kramer

CHEST Journal ◽  
1977 ◽  
Vol 71 (1) ◽  
pp. A20-A22
Author(s):  
Walter H. Abelmann

Sign in / Sign up

Export Citation Format

Share Document