The patient’s corner

The patient’s corner 2018-01-08T12:20:18+00:00

Insurance Company prior authorization: In order for clients to receive a test, they should call in at our Diagnostic Centre and produce a prior authorization submitted by their Insurance Company. We therefore advise our clients to contact their Company in advance and request this procedure.

Each exam may vary in length quite a lot. X-ray exams are faster (a few minutes) than ultrasounds or MultiSliced CT scanners that may take between 15 and 20 minutes. An MR exam, on the other hand, usually takes longer (30-45 minutes approximately).

Not all exams require preparation. When you schedule an appointment, our front desk staff will provide the relevant information in each case. For example, fasting is necessary for exams that require contrast administration.

Sometimes, contrast injection is required for some exams but not always. Nevertheless, you will always receive information in advance and your consent will be necessary before its administration.

As much as possible. You will always be asked to answer a survey that includes questions such as “are you pregnant?”, or “is there a chance you may be pregnant?”, or questions concerning any known allergies and/or conditions you may suffer from. You should also inform about the medication you take, if any.

During the exam the persons running the test will be closely watching you. They are highly-skilled professionals who will pay attention to your reactions and your feedback.

Once the exam is completed, the radiologist has to write a report. It can take some time because the professional needs to review and interpret the images produced during the exam as well as the images from previous exams and all the information provided by your doctor.


The radiowaves used to produce MR images are quite loud and this can be very annoying. For this reason, you will be given earplugs to reduce the noise to the minimum level and, sometimes, even headphones to listen to music if the technique allows it.

MR does not use radiation, only electromagnetic waves that are not harmful to your body.

Claustrophobic patients should undergo a special preparation for this procedure, i.e. they should take anti-anxiety medication. If claustrophobia persists press the device you hold in your hands and the procedure will be stopped immediately. There are open MRI equipment to reduce claustrophobia to the minimum.

Should these measures fail, the procedure will take place under sedation or anaesthesia.


Breast compression is important in order to get the best imaging diagnosis by applying the lowest possible radiation. Additionally, breast compression is essential for the following:

  • To flatten the breast tissue so that small lesions are not hidden under overlapped breast tissues.
  • To prevent breast motion during the exam which may result in its repetition.

Due to today’s technology features, the radiation dose the patient receives is very low. For this reason, the dose reaching the unborn child is irrelevant and the risk is insignificant .

(ICRP84 Standard: Pregnancy and Medical Radiation. Radiation exposure under 100 mGY does not significantly increase the risk of harm to the fetus).


A conventional x-ray or simple x-ray has to be the radiologic diagnostic exam most frequently performed. Usually this is the first exam for people with trauma issues, thorax and/or abdominal conditions, etc.

It involves a small radiation dose which is equivalent to the environmental radiation we receive in 10-20 days period, i.e., the lowest possible radiation. Today’s X-ray systems apply a thorough control over X-ray beams with dose control methods and beam filtering. Scattered radiation is therefore reduced to the minimum and exposure of the patient’s body parts not under examination is the least.


An Intravenous Urography (I.V.U) is a test that uses an I.V. contrast injection before multiple X-rays are taken. These contrast concentrations are found in kidneys and they are excreted in the urine, which facilitate the diagnosis of several urologic diseases.

The patient can take nothing by mouth for 6 hours prior to the exam. Written instructions will be provided the day the patient books an appointment to ensure the intestine is empty, which allows a more diagnostic exam.

The same information provided for CT or SCANNER exams as the contrast used is the same for both. (Please see the following question: “Who is not eligible for contrast-based CT?)


A Barium Enema is an x-ray examination of the large intestine (colon). The exam involves the introduction of barium contrast and sometimes, barium and air, into the rectum followed by x-rays. Then, the radiologist writes a detailed report.

Preparation instructions, which will be given in written when booking an appointment, are meant to ensure the colon is adequately cleared.

You may feel some abdominal discomfort but it should not be painful.


For this test, the patient swallows a contrast solution of barium before taking several X-rays of the upper gastrointestinal tract (the oesophagus, stomach and duodenum. When it involves the jejunum and ileum examination as well it is called BOWEL TRANSIT.

It only requires 6-hur fasting.

X-rays should be used carefully but overall the radiation received during digital X-rays and mammograms is low. In CAT and PET exams, radiation is slightly higher but it falls to safe levels. Special precautions should only be taken when CAT exams need to be repeated.

  • A digital X-ray: a few seconds.
  • An ultrasound: 10-30 minutes, it depends upon the area to be examined.
  • A CTA scan: 10-20 minutes.
  • A PET scan: 2 hours.
  • An MR scan: 20-60 minutes.
  • A mammogram: a few seconds.
  • A mammogram or an ultrasound: No.
  • An X-ray: Usually not necessary.
  • An MR scan: Occasionally.
  • A CAT scan: Almost always.
  • A PET scan: Always.
  • A digital X-ray: Sometimes.
  • A mammogram, an ultrasound or a PET scan: Never.
  • An MR scan: Rarely.
  • A CAT scan: An often.

Even though none of them are dangerous, its use is not risk-free. PET contrast material is not dangerous at all and the one used in MR exams is very safe and   severe reactions are very exceptional. X-rays and CAT contrast material poses more problems but the possibility of severe allergy is extremely rare.

  • A digital X-ray, ultrasound, CAT and PET exams: Yes.
  • MR scans are not allowed unless your pacemaker is MRI-safe. Your cardiologist and/or the information provided during the procedure will solve our doubts.
  • A digital X-ray, mammogram, ultrasound, CAT and/or PET exams: Yes.
  • You can also have an MRI exam as long as the device can be turned off and removed so that it can be put away the examination room and the system wiring can remain in your body. Taking into account that each case is different, please make sure our staff are aware of this circumstance.
  • A digital X-ray, mammogram, ultrasound, CAT and/or PET exams: Yes.
  • Normally an MRI exam is also allowed but you should inform our staff about this circumstance in order to give you instructions specific to your case.

Many of the required exams can be performed in “open” systems and our company holds many of these units. There is no claustrophobia inside them. Nevertheless, we recommend our patients to try first a “closed” system because they generate higher quality exams. Please tell us about your problem and we will establish the best option in each case.

  • During pregnancy, and especially during the first four months, X-ray exams (especially PET exams) should be avoided. If you still must, you will be informed about potential risks and we will ask you to sign a written informed consent. The site staff will take the necessary protection measures for the unborn child when possible.
  • The MRI exam is considered safe and there are no restrictions for ultrasound procedures. However, we try to avoid MRI exams during the first four months of pregnancy to be on the safe side.
  • We also try to avoid contrast material administration during this periodo.
  • If you are pregnant, during the following 48 hours, DO NOT stay close to a person who underwent a PET test.
  • A digital X-ray, mammogram, ultrasound, CAT and/or PET exams: Yes.
  • A PET exam: You will be asked to replace breast milk with baby formula for a few days and to stay away from the baby for 48 hours.
  • If you need contrast administration for an MRI exam, you will be asked also to discontinue breast feeding for a few days.
  • During the following 48 hours, neither you nor your baby can be close to a person who underwent a PET test.

The following documents provide information regarding every specific test. Before signing the corresponding form, please ask us for any other information that you may need to know regarding the test in question. Our staff are willing to provide additional information or answer any query in this regard.

Download the consent you need

• Punción Biopsia guiada por Ecografía (B.A.G.)
• Cistografía
• Colocación de arpón para biopsia de mama
• Estudios radiológicos con administración de contraste endovenoso
• Histerosalpingografía
• Mamografía con prótesis
• Punción con control de tac o ecografía (P.A.A.F)
• Resonancia magnética
• T.A.C.
• Para Técnicas de sedación
• Ficha paciente
• Autorización recogida de estudio


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