Thank you very much for your help in looking at my Doppler ultrasound list

Color Doppler ultrasound routine examination is the basic examination in the field of ultrasound medicine, which is the routine examination of organs and tissues using two-dimensional ultrasound and color Doppler ultrasound.

Most diseases such as fatty liver, liver cancer, gallbladder stones, kidney stones, various congenital heart diseases, acquired heart diseases, atherosclerosis and other diseases are clearly diagnosed by conventional ultrasound. And the corresponding special ultrasound examination refers to the new ultrasound medical technology such as contrast-enhanced ultrasound, elastography, three-dimensional ultrasound, transesophageal ultrasound, interventional ultrasound, etc.

Color Doppler ultrasonography is not as simple as replacing a black and white ultrasound instrument with a color ultrasound instrument as ordinary people think. In addition to the advantages of color ultrasound equipment having a higher resolution of lesions in tissues and organs than ordinary black and white ultrasound equipment, and can more clearly display smaller lesions in tissues and organs, more importantly, in the process of examining patients, pulse Doppler technology, continuous wave Doppler technology, high pulse repetition rate Doppler, color Doppler blood flow imaging, power color blood flow imaging, tissue Doppler imaging and other color Doppler ultrasound technologies are applied to observe the blood flow velocity changes of the examined tissues and organs in different cycles. Information such as blood flow status and blood flow velocity distribution on the tissue echo section image are combined with relevant black-and-white ultrasound two-dimensional anatomical structure information to determine whether there is a lesion in the tissue and organ being examined, the extent of the lesion, and the nature of the lesion. Cardiac color Doppler is one of the important techniques for non-invasive examination of the heart, which is bitter to the patient, no damage, simple method, can be repeated many times, clear imaging, high diagnostic accuracy, easy to popularize, has become an indispensable diagnostic tool in modern clinical medicine, and is an effective method for diagnosing heart disease, especially congenital heart disease.

Cardiac color Doppler is characterized by: (1) It can simultaneously display the distribution of abnormal blood flow in a section of the heart chamber. (2) It can reflect the route and destination of blood flow.

3) It can determine whether the nature of the blood flow is laminar, turbulent, or vortex. (4) It can measure the area, contour, length, and width of the blood flow bundle. (5) The blood flow information can be displayed on the two-dimensional (sector or B-type) section chart, or can be displayed on the one-dimensional (M-type) chart, which more intuitively reflects the relationship between cardiac structural abnormalities and cardiac hemodynamic abnormalities.

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Analysis: Suggestions:

Hello, there may be the following reasons for low menstruation: common endocrine reasons, such as abnormal secretion of various hormones or non-ovulation; In addition, it may be the cause of the endometrium itself, such as endometrial lesions caused by endometrial tuberculosis or artificial abortion, and thin endometrium caused by uterine curettage.

Suggestions: Go to the hospital to check six sex hormones and B-ultrasound. After clarifying**, then treat the symptoms**.

Not severe, need to be regularly rechecked for fibroid growth (3-6 months), anemia may be caused by excessive menstrual bleeding caused by uterine fibroids, usually the symptoms of uterine fibroids are not obvious, older patients should be conservative**, that is, symptomatic**.

Take foods or medicines to replenish qi and blood after menstruation Note that it is normal to rest a small amount of pelvic effusion, and if the amount is large, it is mostly caused by pelvic inflammation, and it is necessary to target inflammation**.

In addition, when doing ultrasound examination, it is best to have an examination in a regular large hospital, and look for a review in the same hospital (of course, it is better if it is the same doctor who gives you a review), and provide the ultrasound report results of the last examination during the review, so that the ultrabiosurgeon can be more targeted in the review.

It is not serious, and uterine fibroids need to be checked regularly! Pay attention to rest on weekdays, strengthen nutrition, live a regular life, exercise moderately, and be in a cheerful mood!

The basic principle of color Doppler ultrasound is B-ultrasound, and the so-called color Doppler is to use the Doppler effect to measure blood flow during the echo processing of B-mode ultrasound, and display it in pseudo-color. Blood flow in the blood vessels is shown in the direction of the ultrasound probe in red, and the divergence is blue. In other words, if it does not involve checking blood flow, it is a B-ultrasound.

Judging from the results, it is a normal early pregnancy of more than 60 days. Congratulations!!

The differences between continuous wave and pulse wave are as follows:1. Ultrasonic mode: continuous Doppler, the ultrasonic waves transmitted and received are continuous, which is the sum of all blood flow signals on the entire beam channel; Pulsed Doppler:

The ultrasound waves emitted and received are intermittently pulsed, showing the velocity, direction, and nature of blood flow at a depth on the beam. <>

2. Resolving ability: continuous Doppler no distance gating performance, lack of distance resolution, overlapping information of each point of the sound beam path, received by the probe at the same time, so that the output signal can not be located; Pulse Doppler has distance resolution and can determine the instantaneous blood flow spectrum of a small area (sampling line) within the cardiovascular system at a fixed point, so it can locate abnormal blood flow and distinguish between positive and abnormal blood flow.

3. Niquist effect: continuous Doppler velocity has strong resolution, and its spectrum can reflect the speed of high-speed blood flow, but is not affected by Niquist frequency; Pulsed Doppler is susceptible to the Nyquist frequency, and if the flow rate exceeds the maximum displayed frequency, spectral aliasing occurs on the spectrum, so high-velocity blood flow cannot be quantitatively measured.