Medical imaging is an important tool to assist in the clinical diagnosis and treatment of diseases (Rencheng Medical)

Medical imaging diagnostic equipment can be divided into large-scale and other imaging diagnostic equipment. Large-scale imaging diagnostic equipment mainly includes X-ray imaging (digital X-ray imaging (DR), digital subtraction angiography (DSA), breast X-ray imaging, digital gastrointestinal machine, etc.), computed tomography (CT), magnetic resonance imaging (MRI), and nuclear medicine (PET, SPECT, PET-CT, PET-MR), while small-scale imaging diagnostic equipment includes ultrasound and endoscopy.

Different medical imaging diagnostic methods have their own advantages in clinical applications due to differences in imaging principles. X-ray imaging mainly targets different tissue densities, so it has a high detection rate for calcified lesions and is widely used in respiratory and orthopedic departments. DR is a basic examination used in respiratory and orthopedic examinations, while CT can assist doctors in conducting more in-depth examinations. CT can also be used to examine cerebral hemorrhage, brain trauma, and brain tumors. Some specialized X-ray equipment can also be used for examinations of specific parts of the body; the digital gastrointestinal machine can provide comprehensive and effective diagnosis of the gastrointestinal tract, the digital mammography machine can detect breast cancer at an early stage, and DSA is the "gold standard" for vascular disease examinations. Because MRI mainly images the magnetic resonance effect of hydrogen nuclei, it has superior imaging effects on soft tissues with high water content, such as the brain, spine, and joints. At the same time, MRI can perform multi-parameter and multi-directional imaging, thus allowing for more in-depth localization and qualitative detection of lesions. Ultrasound can be used for imaging of digestive glands, pelvic organs, and the heart.

Imaging Examination Methods for Major Human Organs and Parts

Classification of Medical Imaging Equipment
Large medical imaging equipment can be mainly divided into four categories according to its imaging principles: X-ray imaging, computed tomography (CT), magnetic resonance imaging (MRI), and nuclear medicine.

X-ray imaging is based on the difference in the degree of absorption of X-rays by different tissues in the human body. The image visually displays the morphology of human organs and bones, with high spatial resolution. It is currently mainly used for preliminary diagnosis of diseases in orthopedics, respiratory medicine, and gastroenterology. A characteristic of X-ray images is that they directly "flatten" the inside of the human body into an image; therefore, it shows an overlapping image of the organs. X-ray examination has a low Price and produces less radiation. The radiation dose of a single X-ray is 0.1mSv, which has virtually no effect on the human body.

Computed tomography (CT) also utilizes the difference in the degree of X-ray absorption by different tissues in the human body, but its biggest difference from X-ray imaging is that CT scans a single cross-section of the human body and forms a grayscale image using a computer system. Therefore, CT images are cross-sectional images that can clearly show the differences in tissue density in different cross-sections of the human body, allowing for more effective and clearer observation of anatomical differences. The detection rate for calcified lesions is over 95%. However, the radiation absorbed is 3-10 times higher than that of X-ray imaging.

Magnetic resonance imaging (MRI) images human tissues using magnetic fields and radiofrequency magnetic fields. During imaging, MRI does not produce ionizing radiation and is relatively safer. MRI can form different images using different parameters, with higher spatial resolution, and can also form images of different cross-sections of the human body, making it more flexible and allowing for more in-depth detection. MRI is generally used for soft tissue imaging, mainly including the brain, spine, lumbar spine, joints, and uterine cavity.

Nuclear medicine imaging is based on the principle of emission computed tomography (ECT). It requires the subject to first ingest a tracer labeled with isotopes. After metabolism, the tracer element will accumulate in different parts of the human body. At this time, the γ camera collects the tracer element's location information to diagnose diseases such as cancer. Currently, commonly used instruments are PET-CT, which integrates PET and CT imaging for a clearer display of lesions.

Main Classification of Large Medical Imaging Equipment

Comparison of Different Large Medical Imaging Equipment

Increasingly advanced medical equipment can facilitate disease diagnosis. The use of medical imaging workstations has also been affirmed, facilitating hospitals, doctors, and patients in imaging. Guangzhou Rencheng Medical has distinguished itself with more than ten years of experience in medical equipment maintenance, cooperating with hospitals and clearly understanding the various needs of doctors. The developed imaging workstation provides excellent service to hospitals, doctors, and patients, integrating software system modules such as patient registration, image acquisition, diagnostic editing, report printing, image post-processing, case inquiry, and statistical analysis. It allows for quick access to examination information, enables image and video visualization, enhances communication with doctors, and facilitates sharing of examination results data. It also facilitates the retrieval of medical records during referrals. Rencheng Imaging Workstation is now recruiting nationwide agents and distributors, and provides 24-hour After-sale Service.

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