In daily inspection,
“Doctor, do I take a black-and-white ultrasound or a color ultrasound?”
“What is the color ultrasound? What’s the difference between black and white ultrasound?”
“Is this color ultrasound more clear and accurate than black and white ultrasound? “
Patients have endless questions
Today, experts from the medical imaging department of our hospital will reveal the true face of color Doppler ultrasound
What is “color ultrasound”?
Color ultrasound is color Doppler blood flow imaging, The English abbreviation is CDFI. In simple terms, color Doppler ultrasound is a high-definition black and white B-ultrasound plus color Doppler. Different colors and brightness respectively mark the direction, speed and nature of the blood flow, and are superimposed on the B-mode ultrasound image.
The characteristic of color ultrasound blood flow is that color represents the direction of blood flow, that is, red represents the direction of blood flow towards the probe, Blue means that the direction of blood flow is away from the probe; the brightness of the color tone indicates the speed, that is, the brighter the color tone, the higher the speed, and the darker the color tone, the lower the speed; the simple representative of the blood flow color is laminar flow, which is normal blood flow. flow. The colorful mosaic blood flow signal represents turbulent flow or eddy current, indicating that the nature of blood flow has changed, and it is more common in blood flow and regurgitation in stenosis.
It can be seen that color Doppler ultrasound not only has the advantages of two-dimensional ultrasound structure images, but also provides rich information of hemodynamics. It has been widely valued and welcomed, and it is known as “non-invasive angiography” clinically.
4 Advantages of Color Ultrasound
1. It can quickly and real-time display the two-dimensional images of various organs, and Two-dimensional plane distribution state of blood flow.
2. It can dynamically display the running direction of blood flow, which is convenient for understanding the phase and speed of blood flow.
3. Can distinguish arterial and venous blood vessels, can identify vascular lesions and non-vascular lesions
, you can understand the nature of blood vessels, and it is helpful to further identify benign and malignant tumors.
4. Can reliably detect shunt and regurgitation, and can quantitatively analyze the origin, width, length, and area of blood flow.
Scope of application of color Doppler ultrasound
Clinical application range: systemic organs such as heart, digestion, urology, uterine appendages, breast, thyroid, testis, musculoskeletal system, etc., can be used as the first choice for examination.
The functional examination department of our hospital is preparing to carry out gastrointestinal ultrasound recently. Before the examination, the patient first drinks 500ml of ultrasound contrast agent (which is composed of food ), to fill up the gastrointestinal tract and discharge the gastrointestinal gas, the wall structure of the gastrointestinal tract and space-occupying lesions inside and outside the wall can be clearly displayed. Gastrointestinal ultrasonography can be used as a routine physical examination, and gastrointestinal endoscopy can be further checked after lesions are found.
Department Introduction
< p data-track="32">Function Inspection Department
The Third Affiliated Department of Guangzhou University of Traditional Chinese Medicine The Functional Inspection Department of the hospital is set up in three campuses. It is a professional team integrating diagnosis, teaching and scientific research. Its specialty covers routine electrocardiogram examination and ultrasonic diagnosis. And clinical teaching work. In recent years, he has presided over a provincial-level project, presided over and participated in many bureau-level and school-level projects, and published dozens of papers.
Specific projects currently being carried out by the functional department:
1. Routine electrocardiogram: It is used to diagnose various diseases such as arrhythmia, myocardial infarction and angina pectoris, atrioventricular enlargement, drug influence and electrolyte disorder.
2. Ultrasound routine examination
Ultrasound medical imaging With the improvement of the new technology of ultrasound, it continues to integrate and develop with clinical departments, and plays an important role in the diagnosis and treatment of diseases, and occupies an increasingly important position in the medical service system. Ultrasound examination is a safe diagnostic method, with the advantages of painless, simple, rapid, non-radioactive, non-radiation, non-invasive, cheap, repeatable, real-time, etc., and can be used as a routine clinical examination.
1. Applicable to musculoskeletal direction – peripheral nerve compression syndrome (carpal tunnel syndrome, cubital tunnel syndrome, etc.), peripheral Neurotraumatic lesions, space-occupying lesions of peripheral nerves, etc. Subcutaneous soft tissue mass, foreign body, inguinal hernia, tendon rupture, muscle tear, bursopathy, bone tumor. Diagnosis of shoulder joint, elbow joint, wrist joint, hip joint, knee joint, ankle joint and other injuries.
2. Applicable to the great vessels of the heart – congenital heart disease, valvular heart disease, cardiomyopathy, coronary heart disease, heart failure, pericardium fluid, intracardiac thrombus, intracardiac tumor, etc.
3. Applicable to the digestive system: liver, gallbladder, pancreas, spleen, appendix, gastrointestinal system – fatty liver, liver cystic lesions , hepatic hemangioma, liver cancer, hepatitis, gallbladder stones, cholecystitis, gallbladder polyps, gallbladder cancer, bile duct stones, pancreatitis, pancreatic cancer, splenomegaly, spleen trauma, appendicitis, intestinal obstruction, etc.
4. Applicable to the urinary (male) reproductive system: kidney, ureter, bladder, prostate, scrotum and testis – kidney stones, hydronephrosis , Renal cystic lesions, renal tumors, ureteral stones, bladder stones, bladder diverticulum, bladder cancer, prostate cancer, benign prostatic hyperplasia with calcification, epididymitis, testicular torsion, testicular tumors, varicocele, etc.
5. Applicable to obstetrics and gynecology: uterus, appendix, fetus – uterine malformation, uterine fibroids, cervical cancer, cervical polyps, internal Membranous polyps, endometrial cancer, intrauterine adhesions, ovarian tumors, ruptured corpus luteum, hydrosalpinx, early pregnancy, ectopic pregnancy, residual fetal matter, hydatidiform mole, etc.
6. Applicable to superficial organs: eyes, thyroid gland, parotid gland, breast gland, lymph node, testis, etc. – vitreous opacity, retinal detachment, lens Opacity, choroidal detachment, intraocular tumor, thyroid tumor, hyperthyroidism, Hashimoto’s thyroiditis, mumps, parotid mixed tumor, breast hyperplasia, mastitis, breast tumor, lymph node reactive hyperplasia, lymphoma, lymph node metastases, etc.
7. Applicable to neck blood vessels, limb blood vessels, abdominal large blood vessels – atherosclerosis with plaque formation, subclavian artery piracy blood syndrome, aneurysm, venous thrombosis, arteriovenous fistula, venous valve insufficiency, etc.).
8. Ultrasound-guided puncture positioning and ultrasound guidance for thyroid nodules, veins, pleural effusion, ascites, hydronephrosis, and joint effusion Lower the puncture.
Contributed by: Hu Zhiwen | First review: Zhang Suping
Typesetting editor (intern): Lin Yulin
< span>Text editor: Ye Meiqi| Proofreading editor: Li Longhao
Review: Wang Jian| Review and release: Fan Linyan
Review: Wang Jian| span>