Imaging technology

About: Imaging technology is a research topic. Over the lifetime, 1450 publications have been published within this topic receiving 26186 citations.

Lamination imaging technology based on known prior information restriction

Abstract: The invention discloses a lamination imaging technology based on partial known prior information of sample to be detected. According to the invention, known information samples can be placed at surrounding of the sample to be detected, scanning is carried out in a measure plane by a lamination scanning mode in order, the corresponding series intensity images can be recorded by an image sensor; the recorded series intensity images are processed, a lamination scan iteration algorithm based on the known surrounding prior information is used, so that a complex amplitude image of the sample to be detected can be obtained in the computer. Through the surrounding unknown prior information restriction, the recovered image is more accurate, the convergence speed is faster, and the image has good translation and noise-resistance capability, problem of overhigh specification requirement on a translation bench in traditional lamination imaging can be effectively solved, and cost is reduced greatly. The lamination imaging technology has the advantages of high imaging efficiency and good transplantability, and is suitable for imaging of various reflective or transmission objects.

MDCT: a new era in imaging

Abstract: Multidetector row computed tomography (MDCT) is an effective imaging technology, providing rapid and non-invasive images in three dimensions. Compared with standard computed tomography (CT), MDCT allows faster data acquisition and shorter scan times, with wider coverage, high resolution and the potential for cardiac gating. Routine thin-section acquisition allows for flexible reconstruction (thick or thin slices), while dedicated software provides three-dimensional and functional data analysis. The technology has a wide range of applications, particularly in cardiovascular medicine, where CT angiography has replaced conventional angiography in many regions of the body. Motion artefacts on cardiac scans are significantly reduced, and the diagnosis of luminal obstructive disease is enhanced. For non-cardiac applications, MDCT allows imaging of extensive arterial territories with unprecedented volumetric resolution. The detection of pulmonary emboli, characterization of arterial aneurysms and presurgical mapping are all improved substantially with MDCT. Pulmonary parenchymal imaging is enhanced, including superior lung nodule detection and better airway assessments. MDCT has rendered some diagnostic techniques, such as intravenous urography, virtually obsolete. The development of MDCT continues, with promises of further improvements and enhancements.

A multimodal image registration using mutual information

Abstract: Medical imaging is the technique and process used to create images of the human body for clinical purposes seeking to reveal, diagnose medical science. It is often perceived to designate the set of techniques that noninvasively produce images of the internal aspect of the body. The development of multimodality methodology based on nuclear medicine (NM), positron emission tomography (PET) imaging, magnetic resonance imaging (MRI), and optical imaging is the single biggest focus in many imaging and cancer centres worldwide and is bringing together researchers and engineers from the farranging fields of molecular pharmacology to nanotechnology engineering. This paper presents a new technique for registration of multimodal images (CT and MRI) using mutual information. The optimization of the images is done by using down sampling technique and also the same algorithm is tested by sub sampling. The speed and computation of both the sampling methods are compared and the results are plotted.

Hybrid imaging of the abdomen and pelvis

Abstract: Accurate imaging is crucial for lesion detection in abdominal organs, for the noninvasive characterization of focal and diffuse abnormalities, and for surgical planning. To accomplish these tasks, several imaging modalities such as multidetector computer tomography (MDCT), magnetic resonance imaging (MRI) and positron emission tomography/computed tomography (PET/CT) are used for abdominal imaging, providing important morphological, functional or metabolic information. More recently, PET/MRI has been gaining attention due to the possibility of combining high-resolution imaging with metabolic imaging. PET/MRI is a novel hybrid imaging technology that in the near future might play a pivotal role in the clinical management of oncologic and inflammatory abdominopelvic diseases. Despite the still limited number of published clinical studies, PET/MRI has been proven to be at least equivalent to PET/CT and to standalone MRI in a variety of oncologic disease. Moreover, in selected and focused clinical studies, it has been proven to outperform current standard of care imaging, for example, in evaluating cholangiocarcinomas, liver metastases, untreated and treated rectal cancer. This has also had an impact on therapeuticmanagement in some studies. Therefore in some institutions, including those of the authors, PET/MRI is becoming the new standard imaging modality in staging treatment-naive intrahepatic massforming cholangiocarcinomas and prior to complicated hepatic surgery.