问题:
B超检查对胎儿有伤害吗
回答:
B超是产前检查的一个项目，孕妈咪怀孕5周就可以开始做B超检查了，此时通过B超，可以观察妊娠部位是否正常（排除宫外孕），胚胎是否存活。在怀孕的第13周之后，B超可以清晰地显示出胎儿的头颅、躯干、心、肺、肝、脾、胃、肾、膀胱等器官和四肢骨骼的情况，通过测量所得的数据，估计胎儿发育情况，还能确定有胎位及胎盘位置，评价胎盘功能，选择分娩方式。
特别提醒，如果不是不想要孩子或者其他特殊的原因，一般妊娠3个月之内是不可以做B超的。
异位妊娠：B超可帮忙释疑
如果遇到怀孕早期xx流血，B超可确定胚胎是否存活，能否继续妊娠，有无异常妊娠或葡萄胎。
如果再怀孕中后期发生xx流血，可以确定自己前置胎盘及前置的类型，或者是否存在胎盘早剥的现象。
对于子宫异常增大的孕妇，可以确定羊水过多还是多胎妊娠，还能观察胎儿有无畸形。
若怀疑有染色体异常的遗传病胎儿，可在B超中抽取少量绒毛组织，宫内脐血或羊水，再进一步作遗传学检查。这项工作有优生价值。
B超还能观察性别。但要注意的是，不应有性别偏爱而造成人类性别比例失调。
整个孕期需做几次B超
对于这个问题的回答并非是{jd1}的，需视孕妇的具体情况而定，一般来讲，至少得做三次B超。
1、{dy}次检查时间是在孕18-20周，此时可确定怀的是单胎还是多胎，并可测量胎儿头围等。因为这一阶段胎儿B超多项指标误差较小，便于核对孕龄。
2、第二次检查时间安排在孕28-30周。此时做B超目的是了解胎儿发育情况，是否有体表畸形，还能对胎儿的位置及羊水量有进一步的了解。
3、{zh1}一次是在孕37-40周，此时做B超检查的目的是确定胎位、胎儿大小、胎盘成熟程度，有无脐带缠颈等，进行临产前的{zh1}评估。
红灯：B超检查多多益善
有些孕妇说，既然B超很安全，对母婴无不良影响，那么多做几次检查又何妨？其实这种看法是不正确的。产科医师也主张孕妇不要过多做B超。澳大利亚有位名叫劳伦斯的产科教授指出：利用B超对孕妇作定期检查，不利于胎儿的健康生长。他将在怀孕期间做过五次以上B超检查的孕妇与已经做过三次B超检查的孕妇作了比较后发现，前者对胎儿生长发育的不利影响是后者的两倍。过多B超检查对胎儿不利的原因，是因为超声波可造成大脑一时性的抑制，同时还能抑制女胎的卵巢发育。劳伦斯教授调查了2800名孕妇后证实，多次B超检查并不影响孕妇的健康，但是，至少有三分之一的胎儿，生长发育会受到不同程度的抑制。
B超检查时间不宜过早
一般认为，怀孕18周以内的孕妇{zh0}不做B超，尤其是在怀孕早期（特殊情况例外，例如对怀孕早期xx见红者，需作B超检查以确定胚胎是否存活，能否继续妊娠，有无异常妊娠或葡萄胎等）。因为孕2个月内若过多做B超，可使胚胎细胞分裂与人脑成形受到影响。孕4个月时，骨骼开始发育；5个月时，胎心发育还不完善；6个月时，所有脏器发育均不完善。过多做B超，会抑制胎儿生长发育，发生畸胎或死胎。当时若是怀疑有畸胎者，则属例外。
B超检查时间，一般是在孕5-6个月以后，因为超声波对胎龄越大的胎儿影响越小。对孕妇来讲，整个孕期需要作几次B超，则需听从医生意见就可以了，不必有过多的顾虑。
回答:
有影响，因为那时超声波，现代医学统计出来结果是有很大影响，具体结果数值我忘了，在国外还有一个试验，把声波探测仪放在孕妇的身体里，再使用B超，结果发现B超扫描头扫过探测仪的时候竟然有80分贝，相当于火车从你身边开过时你的感觉，这对于胎儿似乎大了些，总之尽量少做不必要的检查，中国由于医学不是很发达，医生也不是很重视
回答:
B超检查对胎儿不会伤害。
回答:
是有点影响,但有时为了检查胎儿发育情况一般根据需要定期检查一下还是有必要的!
回答:
近年来b型超声诊断的图像质量及功能改善，许多医院已把它列为妊娠期的常规检查手段。它不仅能显示切面图像，还能做动态观察。可以通过它观察胎儿的各个脏器、胎心和胎动。并同时对被测量的组织做出xx的测量并得出具体的数字。b超是一种高频率声波，一般说是安全的，但大量的动物实验表明，低剂量超声是潜在的致癌与致畸形因素，而且不同频率、不同声强对不同个体有一定危害。
因为超声波对固体和液体都有很强的穿透本领，能量较大时可以使物质微粒作高频振动，部分能量还可以转变为热能，使局部温度升高。高强度的脉冲超声波在含有微米级小气泡的液体中传播时，可导致气泡收缩、膨胀以至猛烈爆炸，这种现象称为“空化现象”。
不久前美国着名超生物物理专家卡斯坦森指出，某些床使用的超声图像诊断仪的{zd0}输出强度已达1千瓦/平方厘米，这个强度足以使生物体产生瞬态空化现象。对生物体来说，瞬态空化作用时，靠近爆炸气泡附近的细胞会受到损伤，一般说来，在人体内大多数器官和生物流体中，损伤少量细胞不会对人体产生危害。
但是，有一个可能的例外，即如果是在人体的生殖细胞或是处在发育敏感期的胚胎和胎儿发生空化现象，那麽即使只损伤几个细胞也是不能容忍的。研究发现，在母体内接受过超声波辐射的新生儿，其体重比未经超声波辐射的正常婴儿体重低。我国学者在研究中还发现，超声诊断影响绒毛细胞内的生化代谢，并使蜕膜组织的免疫学反应减弱。既然超声诊断对胚胎和胎儿有潜在的危害，同时它在产科中的应用又功勋卓着，那么我们究竟应怎样对待它呢？
世界卫生组织要求：目前尚不宜把超声检查推广为孕妇常规检查手段，在确实需要检查时，医生必须严守最小剂量原则，尽可能减少超声波的强度，缩短检查时间；不能为了满足父母的好奇心，利用超声成像技术判别xxxx或为其做即时摄影留念。
此外，在分娩前应用b超确定xxxx，在一般情况下也无此必要。因为这样做只会人为地造成人口性别比例失调，对社会后患无穷。所以b超对妊娠检查，应xx于怀疑有胎位异常、胎盘、脐带、羊水异常、胎儿先天性畸形者，但也不能反复多次检查。如做性别检查，仅适用于怀疑有性染色体遗传病者。譬如外祖父、舅舅中有血友病者，为避免血友病患儿的出生，才可做必要的b超性别检查。
回答:
可以认为没有影响。
回答:
B超检查应注意什么？
B型超声是一门新兴的学科，近年来发展很快，它已成为现代临床医学中不可缺少的诊断方法。
超声诊断起源于40年代。50年代初期，A型超声诊断法应用于临床，不久B型、M型和D型超声相继问世，70年代，B型快速成像技术兴起，80年代初，脉冲及彩色D型超声研制成功。而今彩色显像的成功，使心脏、动静脉、淋巴管、胆道等声像图更加逼真，一目了然。
近年来，介入性超声逐渐普及，体腔探头和术中探头的应用，扩大了诊断范围，也提高了诊断和xx水平。例如，食管探头、胃及十二指肠探头、腹腔探头、xx探头、宫腔探头以及直肠、尿道探头等等。
B超对受检者无痛苦、无损伤、无放射性，且可重复使用，深受医生和病人的欢迎。
在临床应用方面，B超可以清晰地显示各脏器及周围器官的各种断面像，由于图像富于实体感，接近于解剖的真实结构，所以应用超声可以早期明确诊断。例如：眼科诊断非金属异物时，在玻璃体混浊的情况下，可显示视网膜及球后病变。对心脏的先天性心脏病、风湿性心脏病、粘液病的非浸入探测有特异性，可代替大部分心导管检查。它亦可用于小血管的通断、血流方向、速度的测定可广泛应用。早期发现肝占位性病变的检出已达到1厘米水平。还可清楚地显示胆囊总胆管、肝管、肝外胆管、胰腺、肾上腺、前列腺等等。B超检查能检出有否占位性病变，尤其对积液与囊肿的物理定性和数量、体积等相当准确。对各种管腔内结石的检出率高出传统的检查法。对产科更解决了过去许多难以检出的疑难问题。如既能对胎盘定位、羊水测量，又能对单胎多胎、胎儿发育情况及有否畸形和葡萄胎等作出早期诊断。
但是，B超也有其目前难以克服的局限性。首先是它的穿透力弱，对骨骼、空气等很难达到深部，所以对含气性器官，如肺，胃肠等难以探测，对成人颅脑的诊断也较X线、CT逊色。目前的仪器，对1厘米左右的肿瘤组织不易检出，故超声检查阴性；并不排除1厘米左右的肿瘤病灶的存在。其次，由于反射法中发生多次重复反射以及旁辨干扰出现假反射现象，因此有时易造成误诊。
B型超声成像法的探测方法有2种。一是直接探测法，即超声探头与受检者皮肤或粘膜直接接触，此法是当前常规采用的方法。二是间接探测法，即探头与人体之间插入一水囊或其他材料，使超声从发射到进入人体有一个时间的延迟，以增加分辨力，和不平整的部位表面得到耦合以及对娇嫩的组织不受擦伤。
B超探测前的准备：一般不必作探测前准备，在探测易受消化道气体干扰的深部器官时，需空腹检查或作更严格的肠道准备。如腹腔的肝、胆、胰的探测前3日{zh0}禁食牛奶、 豆制品、糖类等易于发酵产气食物，检查前1天晚吃清淡饮食，当天需空腹禁食、禁水。
做盆腔妇产科及泌尿系B超检查，要求充盈膀胱，即检查前30～6O分钟嘱病人饮水500～800毫升（约2瓶汽水量）利用充盈的膀胱推开肠管，形成“透声窗”，从而使子宫、输卵管、卵巢以及前列腺等器官显示完整清楚。经直肠B超检查前，需排便或灌肠。某些特殊的B超检查，另有特别的检查前准备要求。
X线胃肠造影的钡剂是超声的强反射和吸收剂。胆囊、胆管附近胃肠道内若残存有钡剂，则会影响超声检查。胆道X线造影剂虽不构成超声检查的直接障碍，但对胆道的正常生理状态有影响。因此，一般应先安排超声检查或在X线胃肠造影3日后，胆系造影2日后再做超声检查。另外，做胆系B超检查前2天应停服利胆药。
B超检查时的病人体位，因探查部位需要不同，可采取各种体位。如仰卧位。左右侧卧位、俯卧位、坐位、立位、截石位、膝胸位等等。应尽量充分地暴露检查部位，便于医生从各个断面去探查。
现在再介绍两种B超检查中常用的两种辅助检查法，即饮水法和脂餐法。
饮水法：即嘱病人饮温开水500毫升后取右侧卧位，使水充盈胃窦和十二指肠，这样可以使胰腺的头、尾部以及肝外胆管等部位显示清楚，病变得以诊断。
脂餐法：主要是为了进一步诊断胆道系统的疾病。具体方法定在医生常规进行测量胆囊、肝内、外胆管的内径值之后，嘱受检者进食两个油煎鸡蛋，待45分钟后至1小时内复测，尽可能由同一位医师，在同样的体位和测量点作测量。其原理是油煎鸡蛋，特别是其中蛋黄成分刺激十二指肠粘膜释放收缩胆囊素，进而发生3种作用：①胆囊收缩，将胆汁排入胆总管；②刺激肝实质分泌胆汁，甚至胆囊已切除的病人，肝外胆管胆汁流量也会增加；③使奥狄括约肌松弛，以便胆汁排入十二指肠。当脂餐后胆囊有明显的收缩，可以说明胆囊功能良好。若存在梗阻病变，则胆汁排出不畅或受阻，管腔内压力升高，胆管比脂餐前增宽。
通过脂餐前后的各径值的测量对比，来诊断胆系的某些疾病。
回答:
定期的检查是必要的,一般为一个月检查一次.不过太经常是有一定的伤害.
回答:
超声波没有影响~`
次声波会对人体有影响.
回答:
{zh0}在３个月前不要做Ｂ超．我们同事都这么说
回答:
在三个月以后作B超 对胎儿基本上是影响不大的，不过不要经常做就是了。
回答:
对大人和孩子都有害
回答:
在三个月前{zh0}是不要做B超,因为这样对胎儿会有影响.怀孕时做B超不要超过三次.因为B超它是超声波检查,对胎儿不好
回答:
Ｂ超属超生波，对胎儿无什么影响。
回答:
医院的宣传说没什么影响，书上说有影响，个人觉得还是少做为好，需要做的就做（{zh0}是三个月以后），没必要做的就别做（如性别鉴定等）
回答:
楼上说的极是，3个月之前不好，3个月以后问题不大，而且还能检查出一些病呢
回答:
对大人和孩子都有害
回答:
临床上，3个月之内原则上都不做B超。
其实相对于其他检查(如X片，CT等)，B超是影响最小的，几乎没有什么影响。
回答:
有影响，但不会很大
回答:
还是尽量少做吧
回答:
医生建议可以做3-4次
回答:
做B超，应该是没有危险的
English:B ultrasonic examination of fetal harm have you
Question:
B ultrasonic examination of fetal harm have you
answer:
B-is a project of prenatal care, 5 weeks pregnant孕妈咪can start to do B-examined at this time through the B-, can be observed whether it is normal part of pregnancy (excluding pregnancy), whether the survival of embryos. In the first 13 weeks of pregnancy after, B-can clearly show that fetal head, trunk, heart, lung, liver, spleen, stomach, kidney, bladder and other organs and limbs bones situation, by measuring the data collected, it is estimated that the fetus development, but also identified the fetal position and placental location, the evaluation of placental function, select the delivery mode.
to remind, if not do not want their children or other special reasons, the general pregnancy 3 months are not allowed to make a B-.
ectopic pregnancy: B Ultra can help clear up the doubts
If you experience vaginal bleeding early pregnancy, B-can determine whether the survival of embryos, whether to continue pregnancy, whether the abnormal pregnancy or hydatidiform mole.
the mid-and late pregnancy if vaginal bleeding, placenta previa and to determine their own type of pre-, or the existence of the phenomenon of placental abruption.
for abnormal uterine increasing pregnant women, too much amniotic fluid can be identified or multiple pregnancy, but also to observe whether or fetal malformation.
who suspects that have chromosomal abnormalities of fetal genetic disease, can extract a small amount of B-villus, intrauterine umbilical cord blood or amniotic fluid, and then further genetic examination. This work has the value of gifted students.
B can observe the super sex. Yet it must be noted, should not have a gender preference caused by the human sex ratio imbalance.
need to do several times throughout the pregnancy B -
for the answer to this question is not absolute, depending on the specific circumstances of pregnant women may be, in general, to do at least three B-.
1, the first inspection time is 18-20 weeks in pregnancy, when pregnant can determine a single or multi-fetal births, and fetal head circumference and other measurements. Because this stage a number of indicators of fetal B-error smaller, easy to verify gestational age.
2, the second time to check the timing of 28-30 weeks in pregnancy. B-to do at this time to learn about fetal development, whether there is any surface deformities, but also the location of the fetus and amniotic fluid volume have a better understanding.
3, the last time was 37-40 weeks pregnant at this time to do B-ultrasound to determine fetal position, fetal size, placental maturity, whether or not the umbilical cord wrapped around neck, etc., carried out in labor before the final assessment.
red: B-ultrasonography多多益善
some pregnant women said that since the B-very safe, without adverse effects on mother and child, then why not also do a few checks? In fact, this view is not correct. Obstetric physicians also advocate for pregnant women not to make too many B-. Australia has places called Lawrence, professor of obstetrics: the use of B-for pregnant women are regularly checked, is not conducive to the healthy growth of the fetus. He will be done during pregnancy for more than five B ultrasonic examination of pregnant women has been done three times with B-ultrasonography of pregnant women were compared and found that the former of fetal growth and development of the adverse effects of the latter twice. Too many B-ultrasonography of fetal adverse because ultrasound can cause temporary inhibition of the brain, while inhibiting the ovarian development of female fetuses. Professor Lawrence surveyed 2800 pregnant women confirmed that multiple B ultrasonic examination does not affect the health of pregnant women, but at least one-third of the fetus, growth and development will be subject to varying degrees of inhibition.
B ultrasonic examination time it is premature to
is generally believed that within 18 weeks of pregnancy in pregnant women do the best B-, especially in the early stages of pregnancy (the special circumstances exception, for example, the early stages of pregnancy vaginal see red, and the need for B-ultrasonography to determine whether the survival of embryos, whether continued pregnancy, the availability of abnormal pregnancy or hydatidiform mole, etc.). Because of pregnancy within 2 months to do if too many super-B will enable the embryonic cell division and forming the human brain affected. 4 months pregnant, the bones began development; 5 months, the fetal development is not perfect; 6 months, all organs are not perfect development. B-to do too much will inhibit fetal growth and development, the occurrence of teratogenic or stillbirth. At that time, if the suspect has teratogenic, and there is an exception.
B ultrasonic examination time, generally 5-6 months after pregnancy, because ultrasound for gestational age, the greater the impact of the smaller fetus. For pregnant women, the whole pregnancy the need for several B-, then follow the medical advice we can, and do not have too many concerns.
answer:
Influential, because by then the ultrasound, the results of modern medical statistics will be very much affected, the specific results of numerical I forgot, there is a trial abroad, the acoustic detector placed on the body of pregnant women, and then the use of B-, resulting in found that B-scan detector to read the first time actually has 80 dB, which is equivalent to the train opened from your side you feel out of date, which seems to大了些fetal short, as little as possible to do unnecessary tests, the Chinese medicine is not very developed, doctors are not very great importance to
answer:
B ultrasonic examination of the fetus will not hurt.
answer:
It was a bit affected, but sometimes in order to check fetal development generally in accordance with the need for regular check or have the necessary!
answer:
In recent years, b-type ultrasonic diagnostic image quality and function improved, many hospitals have it as a means of pregnancy checks. It not only can display images section, but also make dynamic observation. Can be observed through its various organs of the fetus, fetal heart rate and fetal movement. And at the same time the organization was measured to make precise measurement and concrete figures. b is a kind of ultra-high-frequency sound waves, the general said it is safe, but a large number of animal experiments showed that low doses of ultrasound is a potential cancer-causing factors and induced deformities, but different frequencies, different sound intensity of different individuals have certain hazards.
because of ultrasound on the solid and liquid have a strong ability to penetrate, energy larger particles can make material for high-frequency vibration, can also be part of the energy into heat energy, so that the local temperature. High-intensity pulsed ultrasound in a small bubble containing micron-size spread of the liquid, the bubbles can lead to contraction, expansion and violent explosion, a phenomenon called “cavitation phenomenon.”
Not long ago, the United States
famous super卡斯坦森biophysical experts pointed out that some bed used diagnostic ultrasound images of the maximum output intensity has reached 1 kW / cm2, the intensity sufficient to produce transient cavitation organisms phenomenon. Of organisms, the role of transient cavitation, bubbles near the vicinity of the explosion will be subject to damage cells, generally speaking, the majority of organs in the human body and biological fluids, a small amount of cell injury will not cause harm to humans.
However, there is a possible exception, that is the germ cells in the body or a sensitive period in the development of embryos and fetuses cavitation phenomenon occurs even if the injury only a few cells also can not be tolerated. The study found that in its mother’s body had received neonatal ultrasonic radiation, and its weight without ultrasonic radiation than the normal low-weight babies. China scholars in the study also found that the impact of ultrasound diagnosis of villous cells and biochemical metabolism, and decidual tissue decreased immunological reaction. Since the ultrasonic diagnosis of embryos and fetuses have the potential hazards, and it application in obstetric also Gongxun Zhuo, and then we should be how to deal with it?
the World Health Organization requirements: At present, ultrasonography is still not appropriate to promote the routine examination of pregnant women means, in a real need for inspection, the doctor must observe the principle of the smallest dose possible to reduce the ultrasound intensity, shorten the inspection time; should not in order to meet the parents curiosity, the use of ultrasound imaging technology for the identification of fetal sex or to do real-time photos.
In addition, before delivery to determine the application of b super sex, under normal circumstances is also unnecessary. Because it will only artificially caused by the population sex ratio imbalance, lead to very serious consequences to society. Therefore, b-ultrasound pregnancy test, should be limited to suspected abnormal fetal position, placenta, umbilical cord, amniotic fluid abnormalities, fetal congenital malformations, but also should not repeatedly check. Does gender, such as inspection, only applies to suspected sex chromosome genetic patients. For example, grandfather, uncle, who have hemophilia, in order to avoid the birth of children with hemophilia in order to make the necessary checks b super sex.
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It that there is no impact.
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B ultrasonic examination should pay attention to what?
B-mode ultrasonography is an emerging discipline, has developed rapidly in recent years, it has become indispensable in modern clinical diagnostic methods. Ultrasound diagnosis
originated in the 40’s. 50 In the early, A-type ultrasonic diagnosis method is applied to clinical, near B-, M-type and D-mode ultrasonography have come out in succession, 70’s, B-type rapid emergence of imaging technology, the early 80s, pulse and color development of D-mode ultrasonography success. Now the success of color imaging to the heart, artery and vein, lymphatic vessels, biliary tract, such as more realistic sonogram at a glance.
In recent years, the gradual popularization of Interventional Ultrasound, body cavity probe and intraoperative probe applications, expanding the scope of the diagnosis, but also improve the diagnosis and treatment level. For example, the esophageal probe, stomach and duodenal probe, abdominal probe, transvaginal probe, the probe as well as intrauterine rectum, urethra probe and so on.
B-ultrasound in subjects without pain, without injury, non-radioactive, and can be used by doctors and patients welcomed.
in clinical applications, B-can clearly showed that the organ and the surrounding organs such as the various sections, as the images a sense of wealth to the entities, closer to the true anatomical structure, so the application of ultrasound can be diagnosed early. For example: non-metallic foreign body in ophthalmic diagnosis, in the case of vitreous opacities, retinal, and the ball can be displayed after the lesion. The heart of congenital heart disease, rheumatic heart disease, mucus disease has specific detection of non-submerged, can replace the majority of cardiac catheterization. It can also be used in small blood vessels break, flow direction, speed measurement can be widely applied. Early detection of liver lesions detected has reached the level of 1 cm. Also clearly shows the gallbladder bile duct, hepatic duct, extrahepatic bile duct, pancreas, adrenal gland, prostate and so on. B ultrasonic examination can be detected whether the space-occupying lesions, especially for effusion and cyst physical qualitative and quantity, volume and so are reasonably accurate. Various intraluminal stone detection rate higher than the traditional test. Of obstetric more difficult to solve many difficult problems detected. If both of the placental location, amniotic fluid measurement, but also of multiple births, single births, fetal development and it has made, such as deformities and early diagnosis of hydatidiform mole.
However, B also has its super difficult to overcome the current limitations. The first is its poor penetration of bone, air, etc. is very difficult to achieve deep, so the gas-bearing organs, such as the lungs, gastrointestinal and other difficult to detect, the diagnosis of adult brain than the X-ray, CT favorably. The present apparatus, on 1 cm around the tumor tissue not easily detected, so negative ultrasonography; does not rule out the 1 cm about the existence of tumor lesions. Secondly, the reflection method as a result of repeated reflection occurred as well as the next to identify false reflection of interference phenomenon, it is sometimes easy to cause misdiagnosis.
B-mode ultrasound imaging of the detection method has two kinds. First direct detection method, that is, subjects with ultrasound probe with direct contact with skin or mucous membrane, this method is the conventional method used. The second is the indirect detection method, that is inserted between the probe and human bladders one or other material, so that ultrasound from launch to enter the body has a time delay in order to increase resolution, and non-flat parts of the surface to be coupled as well as the delicate organizations not subject to abrasion.
B super-ready to detect before: the former generally do not have to be ready to detect, in the detection of vulnerable to the digestive tract gas interference deep organ, the required inspection or fasting for more rigorous bowel preparation. Such as the abdominal cavity of the liver, gallbladder, pancreas detection before 3 day fasting the best milk, soy, sugar and other easily aerogenes fermentation of food, before they are inspected by one天晚eat light diet, fasting the day of fasting required, cut-water. Does pelvic
obstetrics and gynecology, and urinary tract ultrasonography B requires filling the bladder, that is, before they are inspected by 30 ~ 6O minutes, asking the patients drinking 500 to 800 milliliters (about 2 bottles of soft drinks volume) the use of open bowel bladder filling, forming ” transaudient Window “, so that the uterus, fallopian tube, ovary and prostate and other organs showed complete clear. Transrectal ultrasonography before B takes defecation or enema. Some special B-ultrasonic examination, and another special preparation requirements before the inspection.
X-ray imaging gastrointestinal barium is strong ultrasound reflection and absorption. Gallbladder, bile duct near the gastrointestinal tract if it has residual barium will be affected ultrasonography. Biliary X-ray contrast agent does not pose a direct obstacle to ultrasound, but the normal physiological state biliary influential. Therefore, the general arrangements should first ultrasound or angiography in gastrointestinal X-ray 3 days later, biliary contrast ultrasonography after 2 again. In addition, make biliary B ultrasonic examination 2 days before serving choleretic drugs should be stopped.
B ultrasonic examination of patients at the time of position, due to the need for exploration of different parts, may take a variety of body position. Such as the supine position. About lateral position, prone position, sitting, standing position, lithotomy position, knee-chest position and so on. Should be exposed as fully as possible to check the site for doctors to detect from the various sections.
now re-introduce two types of B-ultrasound-assisted two types of commonly used test, namely, drinking water and fat meal Act.
water law: that is, asking the patient drink 500 milliliters of water temperature right after the check supine, so that the water filling the antrum and duodenum, so that the pancreas head, tail and extrahepatic bile duct and other parts showed clear lesions can be diagnosed.
fat meal Law: mainly in order to further the diagnosis of biliary system diseases. Doctor set at specific methods to measure conventional cholecystectomy, intrahepatic, extrahepatic bile duct diameter values, the subjects asked to eat two fried eggs, wait 45 minutes to one hour after the retest, as far as possible, by the same physicians, in the same position and the measurement point for measurement. The principle is that fried egg, egg yolk composition in particular the release of duodenal mucosa to stimulate the contraction of cholecystokinin, which occurred in the role of three kinds: ① cholecystokinin, the bile into the common bile duct; ② stimulate bile secretion of the liver parenchyma, and even the gallbladder have been resection patients, extrahepatic bile duct bile flow would increase; ③ make Oddi sphincter relaxation in order to bile into the duodenum. When the resin has a clear postprandial gallbladder contraction, can explain a well-functioning gallbladder. If the existence of obstructive lesions, while bile from impeded or obstructed, increased intraluminal pressure, fasting lipid wider than duct.
through fasting lipid values after the measurement of the diameter compared to diagnose certain diseases of the biliary tract.
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Regular inspection is necessary, generally once a month. But too often there is a certain amount of harm.
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Ultrasound does not affect ~ ` infrasound
harmful to human influence.
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Preferably 3 months ago not to make B-. Our colleagues are saying
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After three months for B-to the fetus is basically little effect, but do not often make就是了.
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Adults and children are harmful
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Three months ago it is best not to do B-, because it would affect the fetus. Pregnancy B-Do not make more than three times. Because it is a B-ultrasonic examination of fetal well
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B-wave is able to bounce back, without any effect on the fetus.
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Say nothing of the hospital impact of publicity, the book said that influential, or less personally feel that as well, need to do to do on (preferably after three months), no need to do to do on the other (such as gender identification, etc.)
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Say the very upstairs is 3 months before the bad, 3 months later not a big issue, but also check out some sick so
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Adults and children are harmful
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Clinically, 3 months in principle not to do B-.
In fact, compared to other checks (such as X films, CT, etc.), B is the impact of the smallest super little impact.
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Influential, but not great
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Or as little as possible to do it
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The doctor’s advice can make 3-4 times
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