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2011年12月15日星期四

How to take chest x-ray


A chest X-ray is taken by a radiology technologist. The pictures are usually read by a radiologist, who writes the report. Other types of doctors, such as a family medicine doctor, internist, or surgeon, also may review chest X-rays.
      You will need to take off jewelry that might be in the way of the X-ray picture. You may need to take off all or most of your clothes above the waist (you may be allowed to keep on your underwear if it does not get in the way of the test). You will be given a gown to wear during the test.
      Two X-ray views of the chest are usually taken. One view is taken from the back; the other view is taken from the side of the body. But other views may be needed, depending on what your doctor is looking for. In an emergency, only one picture may be taken, usually from the front.
      You usually stand with your front against an X-ray plate for the pictures. If you need to sit or lie down, someone will help you get into the correct position.
      You will need to hold very still during the X-ray to prevent blurring of the picture. You may be asked to hold your breath for a few seconds while the X-ray picture is taken.
      Most hospitals and some clinics have portable X-ray machines. If a chest X-ray is done with a portable X-ray machine at your bedside in a hospital, an X-ray technologist and nurse will help you move into the correct position. Usually only one picture from the front is taken.

2011年12月14日星期三

The 5 Ds that Make Patients Bad Partners in Healthcare

From the point view of patient's, an important focus of healthcare reform is to directly interact with their healthcare decisions. While this is a laudable goal, there are a number barriers need to be cleared in order to make it viable. Why most patients are not good partners when it comes to healthcare decisions for themselves or loved ones? I believe there are at least five reasons :
      Distress
  Patients come to a physician typically only after a disease or process has progressed to the point that it is no longer comfortable for them to ignore it. This distress, by itself, puts the patient at a disadvantage for making judgments and assessing importance.
 
  Denial
When faced with any significant issue, particularly one affecting health, most patients move relatively quickly through the phases of grief, from shock to denial. Feelings like, “it's not that bad,” or, “that doctor doesn't know what he's talking about,” are common. Denying the disease itself or the cause of the disease frequently leads to treating symptoms and not the illness.
  Dollar
  When presented with different options for therapy or diagnosis, cost is frequently never discussed. When it is, the more subjective idea of the "value" of each alternative is more difficult to convey. This is because physicians and other providers have spent years in school trying to get a handle on just that question.
  Data
  Patients, armed with the latest Google search present themselves to their provider with a complaint list and everything they "know" about their illness. Physicians can have difficulty sorting through what is true or reasonably true versus the latest ad, wrapped up as real information.
  Dose
  From the radiology standpoint, patients are being told that their diagnostic examination will lead to cancer — at least that's what many remember from the latest media blast. In ALARA terms, sometimes the highest dosage radiology examination( taken by a mobile x ray machine, c arm, digital x ray machine, etc), is the one has the biggest value. The exam with the least value and lowest cost offen has the lowest dose and sometimes it's a mixture of highest cost — lowest value or lowest cost moderate value.

2011年12月12日星期一

To be an X-Ray Technician ! Or not ?


The x- ray technicians is that person who is qualified, trained and a strength employee who is expert in scientific exploitation of X-ray tools and may be able to take pictures of the body’s interior bones, organs and etc. So after considered by the doctor’s problem can detect the state of the ailment and start the further action.
      X-Ray investigation is firstly pedestal in the branch of farming and enchanting into explanation the degree of numerous X-ray technicians for the further training taking more than two years previous to the actual startup the work in numerous places such as, in the government or private hospitals, radiology workshops, physicians, dental clinics, etc.
      For the training of x- ray technicians there are so many institute such as trade schools, wherever learners study the course and found essentials information about the process of permanent and manageable X-ray arrangement of the patients before the actual X-ray ray is focuses on him as it is for a small epoch in the precious region and the picture is uncovered to the photo-sensitive shield reserved in a small package from side to side which solitary X-rays can overtake. The expansion and advantage of photosensitive plate bare the actual pointed picture exposes behind the expansion progresses.
      Several students also study extra education connected actions in esteem to radiology in analytic submissions of ultrasound method and magnetic reverberation imaging, computer-aided tomography examination.
      The career of a radiologist wants outstanding community relationships and most important proficient exercise because the expansion of community relationships is accommodating the whole course. The patients that exaggerated by the extended anguish awkward approach to assume, as they are drained of being incapable to stand the belongings of damage because the incomplete association incapacity to knowledge or to alter the location as deceitful losing, without assist as of everyone.
      These buoyant x- ray technicians can pass a smirk in the features and search for the assistance necessary of them in the prolongation of suitable cure and get back a superior revival.

2011年12月6日星期二

How to prevent X-ray from hurting normal cells


   In modern medical field, all kinds of x ray equipments have been widely used in hospitals, health centers, clinical centers and so on.There are diagnostic equipments, such as mobile x ray machine,stationary x ray machine, c arm machine ect. The x ray technology brings much convenience to medical field, but as every one knows, overmuch x ray can do a lot of harm to human body.
      According to British engineer's website reported recently, UK Bristol university and university of swan lake is researching a X-ray sensor which can prevent doctors from incorrect treatment to cancer radiotherapy patient. The sensor can produce alarm to remind doctors to stop light when X-ray illuminates in normal patients.
      The sensor’s research is based on physics study used to detect charged particles sensor, according to design requirements, the sensor placed between patients and medical x-ray machine must be designed very shin, so it will not affect the normal illuminates by medical x-ray. The sensor can not only detect 0.0001% intensity of ray radiation but also is very convenient for doctor to adjust x-ray’s shape and strength by sensor’s collimator, which make x-ray hitting tumor location much more accurately.
      Besides, the research team is still developing related software which can predict the sensor’s possible problems in using process and compare to normal situation, so operators can find problems and can prevent incorrect treatment. It is expected that the sensor in the final product will be put into use in the hospitals within three years.

2011年12月5日星期一

Annual physical examination


  Annual physical examination is a healthy sense in modern time. Nowadays , more and more people take care of their own body . They become to be familiar with routine tests in hospital, such as clinical lab device, microplate reader .

      For some people, the annual physical examination is a source of reassurance that they're as healthy as they feel. Others see it as an alarm system, to catch health problems before they become serious.


      This examination is so necessary and important for human body. The physical exam is an essential part of any doctor's visit. Surprisingly, though, there are no absolutes in a routine physical. A good doctor may be thorough or brief, according to his or her personal style and your individual circumstances.


      Most people have experienced many aspects of the annual exam:


      First , before taking a test , doctors will know some about your health. Such as smoking, excessive alcohol use, diet and exercise.


      Then is vital signs ,including blood pressure, less than 120 over 80 is a normal blood pressure. Doctors define high blood pressure (hypertension) as 140 over 90 or higher. Heart exam , lung exam, head and neck exam, abdomina exam , neurological exam .


      Then when you do some test , you will use some medical equipment , they are so fast and conveniently for doctors to operate . Such as hematology analyzer , fluoroscopy x ray machine ,biochemistry analyzer. Immune quantitative analyzer. They usually test on human's blood , for there are so many health singal is marked in our blood , the same as the disease .


      After taking annual physical examination ,if you get a health report ,that will be good news for you . But sometimes , we will find some sickness . Pls don't be worried so much , because doctors will do a good favor to help you ,and you will be healthy soon later .

2011年8月21日星期日

Some Knowledge of Floroscopy

The definition of Fluoroscopy
A fluoroscopeproduces a video x-ray. During a fluoroscopic exam, a continuous X-ray beamis used to view an organ or part of the body in real time. The live images are displayed on a computer screen or television monitor. Fluoroscopes are used for interventional procedures such as guiding the placement of a catheter during an arteriography, for assessing stomach and bowel movement and function, and for detecting obstructions in the airway or blood vessels. A contrast agent may also be used to enhance the images.
Fluoroscopy is most often used to view the upper GI tract, which includes the stomach, esophagus, duodenum, and the upper small intestine. It is also used to view the lower GI tract.
 
How fluoroscopy worksThe fluoroscope is a type of x-ray machine that can use either a continuous or a pulsing x-ray beam. The x-ray machine has an x-ray tube that is constructed of glass or metal and has a vacuum seal inside. It generates x-rays by converting electricity from its power line (AC current of 120-480 volts) into electricity that falls into the 25-150 kilo volt range. This creates a stream of electrons that are shot against a tungsten target. When the electrons hit this target (called an anode) the atomic structure of the tungsten stops the electrons, causing a release of x-ray energy. This energy is focused by the x-ray tube onto the area of the body to be imaged.
These very energetic electromagnetic waves can pass through the body and create images of internal structures. Because the different tissues within the body are of different densities, those waves are attenuated (weakened) at differing rates as they pass through. Bone, for example, is very dense and absorbs a lot of the x-rays, while the tissues surrounding the bone are less dense and absorb less of the x-ray.
It is this difference in the absorption of the waves that creates variations in the exposures and allows the detail of the image to be formed.
With a fluoroscope, when the beam passes through the body it hits an image intensifier that increases the brightness of the image many times (e.g. x1000 to x5000) so that it can be viewed on a display screen. The image intensifier itself is coupled to a video camera that captures and encodes the two-dimensional patterns of light as a video signal from the x-ray machine. The signal is converted back into a pattern of light seen as the image on the monitor. The camera output can be digitized for computer image enhancements.
The fluoroscope produces a low dose of radiation, slightly higher than a regular x-ray so it is very important that you let the doctor know if you are pregnant or think you might be.
 
What to expect when you have fluoroscopic imaging
Fluoroscopic imaging is painless. Before the imaging you will need to remove any jewelry or clothing that are in the area being scanned. For GI studies, you will usually need to drink barium, or have a barium enema. The barium provides the contrast needed to produce a clear image that can detect polyps and other abnormalities or obstructions.
You will then lie on a table or stand depending on the purpose and area being imaged. The camera will be moved to a position above or in front of you in order to get the proper angle for the images. The procedure will take anywhere from a few minutes to an hour depending on the purpose of the imaging. For example, fluoroscopyis often used in interventional radiology to aid the positioning of a needle for a biopsy or other procedure.
  Articl source: Internet

2011年7月6日星期三

Digital x ray machine

Digital x ray machines have different kinds.It can be sorted by the kinds of detector .
The digital x ray machines are CCD digital x ray machine and
flat  x-ray machine.
The two kinds of the digital x ray machines we have .PLX8200 high frequency digital x ray machine and PLX5200 high frequency mobile digital x ray machine.
If you are interested in the high frequency digital x ray machine ,weclome to visit our website: http://www.perlong.com/english/.