About medical imaging thesis
In the hospital, X-ray, ultrasound and so on belong to medical imaging technology, so how much do you know about medical imaging? Here, I have shared to you about medical imaging thesis, come and learn it!
Abstract Introduces the history of the development of medical imaging CT imaging technology and the advantages of imaging technology in the development of digitalization explains the basic principles and structure of the PACS system and the significance of the use of this architecture; points out that the development of imaging is of great significance to the medical diagnostic process.
Keywords: development, imaging technology, digitalization
Overview and characteristics of the development of imaging
Diagnostic imaging is one of the most important and fastest growing fields of medical diagnosis in the century.The development of CT began in the 6th century.In 1967, the British engineer Hansfield began the study of pattern recognition.5 years. X-ray fluoroscopy and radiography are the most commonly used diagnostic imaging methods in clinical practice, but today, the emergence and application of X-ray CT technology has led to a quantum leap in the level of diagnostic imaging, which has greatly improved the level of clinical diagnosis. The computerized tomography (CT) is the use of computer technology to deal with the human body tissue and organs of the section of the image. x-ray CT film to provide doctors with the amount of information is far greater than that of the ordinary X-ray photographs observed by the information.
Advantages of CT imaging: CT has four main advantages over conventional imaging.
True cross-sectional images: CT can be collimated by the X-ray collimation system to obtain cross-sectional images without interference from extradimensional tissue structures. When compared to conventional X-ray tomography, CT produces cross-sectional images with accurate layer thicknesses, clear images, and high density resolution without the interference of extradimensional structures.
High density resolution: CT has the highest density resolution compared to conventional imaging. The reason is: the first CT X-ray beam through the object to reach the detector after strict collimation of scattered rays less; the second CT machine using a high-sensitivity, high-efficiency receiver; the third CT using computer software to control the gray scale can be adjusted according to the diagnostic needs of the human eye visual observation range. In general, the density resolution of CT is about twice as high as that of conventional X-ray.
Quantitative analysis: CT can accurately measure the attenuation of X-ray absorption in various tissues, which can be quantitatively analyzed through various calculations.
Computerized image processing: The shape and structure of lesions can be analyzed with the help of a computer and some image processing software. The use of spiral scanning can obtain high-quality three-dimensional images and cross-sectional images of multiple planes.
Major new technologies in imaging
Digital-based imaging technology: With the arrival of the information age digital, standardized, networked operations have entered the medical imaging community and the rapid development of the momentum of the rapid development of the accompanied by a number of new `digital imaging technology has been applied to clinical. Medical imaging archiving and communication system (PACS) and medical imaging diagnostic reporting system came into being and got rapid development so that the whole radiology department has undergone a great change to improve the status and role of imaging in clinical medicine.
The basic principles and structure of PACS: PACS is computer-centered by the acquisition of image information, transmission and archiving and processing and other components.
Acquisition of image information: CT, MRI, DSA, CR and ECT and other digital image information can be directly input into the PACS and many X-ray images need to be converted into digital image information by the signal converter to input.
Transmission of image information: In PACS, the transmission system serves as a bridge for the input, retrieval, and processing of digitized image information.
Image information storage and compression: image information can be stored on tape, disk, CD-ROM and various memory cards. Image information compression storage is very necessary. Because an X-ray photo of a large amount of information is equivalent to more than 15 pages of manuscript paper filled with Chinese characters of the amount of information and a .8cm CD-ROM can only store the information of the X-ray photo. The compression method is mostly used between the value and the Havermann symbol compression method image information compression 1/5 ~ 1/1 can still maintain the original image quality.
The processing of image information: the processing of image information is completed by the computer center. Computer capacity, processing speed and the number of terminals can be connected to determine the size and overall function of the PACS. The software is related to the ability to retrieve, edit and image reprocessing functions. CT computer system belongs to the general-purpose minicomputer in order to fit the CT machine work requirements CT computer system generally has a fast computing speed and storage capacity of these two characteristics.
Conclusion
Medical imaging has enormous potential that will be realized if each imaging modality successfully seizes the opportunities and challenges of technological advancement, which will require the combined efforts of physicists, engineers, numerologists, informaticians, and physicians.
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