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Why Is Computed Tomography Important For Diagnosing Diseases Of The Circulation?

Cardiovascular diseases have become one of the main reasons of death in the world. In several countries, according to data from the Ministry of Health, they are the first cause of death among the population. Computed tomography equipment can help doctors establish an early diagnosis to prevent circulatory system pathologies.

diagnosing-diseases

What is a CT scan?

A CT scan is a procedure that uses an x-ray source that revolves around a circular structure called Gantry. Each time a complete rotation is performed, a computer constructs a 2D image cut, repeating the process until the desired number of cuts is obtained. In each image cut, the thickness of the tissue to be checked is represented; this thickness can vary between less than 1 millimeter and 10 millimeters depending on the type of equipment used.

The images can rotate in space or see the cuts successively, generating a 3D image showing the skeleton, organs, and tissues of the patient simultaneously. Thanks to this, it will be more precise to locate the point where any anomaly is occurring.

CT scans are used to detect tumors, infections, fractures, hemorrhages, among other pathologies. Despite its versatility in clinical diagnosis, its use should be limited since exposure to X-rays is high (although it does not leave remains in the body after the end of the test). Special care must be taken with children, who are more sensitive to ionizing radiation.

Contrast for a CT

In soft tissues, the ability to retain radiation is variable and, therefore, more complicated to visualize inside. Therefore, contrast media have been developed, which makes these tissues highly visible in a CT scan.

In contrast, media the patient is injected with a substance rich in iodine that circulates to the organs, changing the way they look through the x-rays. In the case of the circulatory system, the contrast will illuminate the blood vessels in search of possible obstructions. It is essential to know contrast CT scan cost in Delhi first.

There are other types of contrasts, such as barium compounds that are used to examine the digestive system.

How can a CT diagnose circulatory diseases?

Angiography performed with computed tomography or Angiotomography (ATC) equipment analyses blood flow in different parts of the body, such as the brain, heart, abdomen, legs, and arms.

CT scan serves not only to assess the proper functioning of blood vessels but also to diagnose diseases related to circulatory problems such as:

  • Alterations in arteries or veins (aneurysms).
  • Atherosclerotic plaques in the arteries.
  • Obstructions in the blood vessels.
  • Congenital disease in the arteries.
  • Ischemic accidents or cerebral hemorrhages.
  • Arterial disease in the blood vessels of the heart.
  • Pulmonary embolism in the arteries etc.

Also, the ATC through computed tomography equipment are used by surgeons to see the result and evolution of an intervention performed or to plan a future surgery using it for example to:

  • Guide in a reconstruction of blood vessels.
  • Evaluate coronary veins after the placement of a pacemaker.
  • Review the efficacy of an angioplasty or stent placement.
  • Evaluate the need for a bypass.
  • Perform a tissue biopsy.

Angiography with computed tomography is a faster, non-invasive type of test that has fewer complications for the patient than is traditionally performed using a catheter.

Using The CT Method (Computed Tomography) In The Diagnosis Of Oncology

To detect the presence of cancer cells in the body, there are several modern methods of examination. One of them is computed tomography. With the help of this instrumental study, it is possible not only to identify oncology, but also to find its individual foci (metastases), as well as other pathological processes.

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Metastases quickly spread throughout the body, affecting various parts of it. With the help of CT, one can detect both volumetric neoplasms and the smallest cancers. What is good about this study is that the image transmitted by the tomograph will allow you to examine any type of tissue - from soft to bone.

Why is it important to use computed tomography to diagnose cancer? Because the device will show the formation of any size - up to several millimeters. Thanks to such a detailed diagnosis, the oncologist has a unique opportunity to clarify the diagnosis and prescribe the right treatment. The CT scan price in Delhi varies according to the type of CT scan that is to be conducted.

The effectiveness of computed tomography has been proven in the study of such systems and organs as:

  • Lungs, bronchi;
  • Brain;
  • Pelvic organs;
  • Spine and other parts of the skeleton;
  • Blood vessels;
  • Skin integument, subcutaneous tissue;
  • Abdominal organs;
  • Lymph nodes.

When is computed tomography prescribed?

The CT method is effective in examining most organs and systems of the human body. Indications for examination are many pathological changes. So, it is necessary to carry out:

Brain tomography under the assumption of hemorrhagic stroke, vascular pathologies, neoplasms in the brain and meninges, hematomas (with the specification of their location). If the patient has a history of malformation or vascular aneurysm, CT scan is necessary. Before undergoing a CT scan, it is good to know the CT scan cost in south Delhi first.

  • CT of the head (cranial box) - in case of severe contusion, developmental abnormality, skull fracture, suspected cyst and other formation. The picture will allow the doctor to assess the patient’s condition and help to decide on the need for surgical intervention.
  • Computed tomography of the larynx, nose - if there is concern about the presence of a tumor, chronic sinusitis, and inflammation of the lacrimal flows.
  • Tomography of the lungs - to determine the presence of focal and pathological neoplasms, pneumonia, emphysema, etc.
  • CT of the chest - with suspected pathology in the organs located in the chest cavity: pleura, lungs, bronchi, esophagus, heart, lymph nodes.
  • Computed tomography of the spine - in difficult cases, to clarify the diagnosis. Indications for CT - scoliosis, trauma, osteoporosis, leg pain, intervertebral hernia, damage to the vertebrae and discs, osteochondrosis.
  • Tomography of the abdominal cavity - to determine the presence of cysts and their size, pancreatitis, blood clots, inflammation, appendicitis, fluid accumulation, pathological changes. This examination is indispensable for suspected neoplasms.
  • CT of the joints (shoulder, hip, knee) - to determine the cause of pain in the joint during movement, the accumulation of fluid in it. Such a study is carried out when the patient is suspected of developing arthrosis, arthritis, as well as to determine the degree of pathological changes in the joints.
  • Computer tomography of the genitourinary system - with suspected cancer in the bladder, kidneys.
  • CT of the intestine - to establish the cause of the problems in this organ.
What Are The Causes Of Chest Pain?

Pain in the chest is one of the most important symptoms of a number of diseases of the heart and blood vessels. Chest pains can be caused by pathology not only of the heart, but also of other organs and tissues of the chest, and also caused by diseases of the abdominal organs.

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Timely differential diagnosis of chest pain requires a doctor with sufficient theoretical knowledge and knowledge of the methods for examining patients at the CT scan centre. Chest pain may appear in a previously healthy person for the first time in their life.

In other cases, the patient develops pains of a different nature than before, and this may be due to the progression of an existing disease or the appearance of its complications.

The most important characteristics for differential diagnosis of chest pain: factors that provoke pain, localization of pain, duration, depth, circumstances of pain relief, as well as some other specific features of the pain syndrome. You should first know the chest CT scan cost in Delhi, before going to have a CT scan.

Provocative factors

When collecting an anamnesis, it is necessary to determine the dependence of the occurrence of pain on various circumstances and situations in which the pain begins to bother the patient or intensifies.

  • With an attack of angina pectoris, pain often occurs during exercise.
  • Pain characteristic of pericarditis occurs with a change in body position and deep breathing.
  • For pleural pain with pneumonia, pneumothorax, pleurisy, a connection with breathing is also characteristic.
  • With peptic ulcer and esophageal reflux, the relationship of pain with food intake (on an empty stomach), time of day (at night), and body position (lying) is important.
  • With esophagospasm, chest pain often occurs during exercise or after a cold drink, but can also be spontaneous.
  • Pain in vertebral hernias is often aggravated by movement of the head and neck and palpation, which is also characteristic of musculoskeletal pain.

 Pain localization

The sternal pain localization characteristic of IHD is also observed in diseases of the esophagus, in case of hyperventilation, and pulmonary hypertension. Against the background of the pathology of the gastrointestinal tract, pains are often localized in the lower part of the sternum and in the epigastrium. Pain with stratified aortic aneurysm often radiates to the back or lumbar region.

The basic principles of medical tactics for acute chest pain

  • With any nature of the pain syndrome, an electrocardiographic study is performed to exclude the most formidable pathology - acute myocardial infarction.
  • Patients who are in doubt about the diagnosis, aged over 40 - 50 years old with intense pain in the chest (even atypical nature of angina pectoris), before the diagnosis is clarified, it is advisable to be hospitalized,

In all cases, it is necessary to strive for the maximum removal of the pain syndrome. Naturally, the relief of pain is carried out taking into account its pathogenesis and should be only part of the complex therapy of a known or suspected underlying disease.

Important Pointers To Consider For A CT Scan In Case Of Suspected Abdominal Injury

Doctors are concerned about the active appointment of an examination using computed tomography (CT) in paediatric traumatology. With this diagnostic method, the child is exposed to x-rays, which in the long term increases the risk of cancer. Therefore, CT should be prescribed in case of emergency. Before going for a CT scan, it is suggested to first know the CT scan cost in Noida.

A group of American scientists from the University of California School of Medicine at Davis conducted a study to determine the feasibility of appointing a CT scan in cases of suspected abdominal injury. Researchers studied data from a little over twelve thousand patients aged 5 to 16 years who were admitted to the hospital with suspected abdominal injury as a result of an accident or for other reasons from 2007 to 2010.

It turned out that 45% of CT patients were prescribed in the emergency department. In 6%, abdominal injuries were recorded, which could be detected using the method of computed tomography. Only 25% of these patients needed emergency surgery, such as surgery or a blood transfusion.

After analysing the data obtained during the study, experts identified seven main signs indicating a small probability of trauma to the abdominal cavity. They believe that a child should not be sent to a CT scan of the abdomen if:

  • On the stomach there are no traces of the seat belt or other visible damage;
  • No evidence of chest injury;
  • The patient does not complain of abdominal pain;
  • No breathing difficulties;
  • No vomiting.

According to researchers, the predictive value of these rules is 99.9%, sensitivity - 97% and specificity - 42.5. In practice, among patients whose condition was assessed taking into account these signs, in one case out of a thousand, acute abdominal trauma was identified, requiring medical intervention.

How accurate is it to get body scans with high-tech CTs for early diagnosis? Is it possible for any health damages to repeat these examinations every year (even almost every six months)? Are these tests a significant benefit in terms of health protection and early diagnosis of diseases? Let's continue to ask: How accurate is it to perform a CT scan for every headache, neck stiffness, pain in the waist, numbness in the leg?

There is a significant increase in unnecessary CT scans. Due to some unimportant images detected in these scans, people are unnecessarily worried and re-subjected to new CT scans. It is also important that the method is expensive. There is a serious economic loss. There are radiologists who say that no country in the world has as many CT devices as in our country (for example, in Istanbul).

'Needs' should be questioned well

Even if different and new CT scanners have been developed in recent years to help expose them to a lower dose of irradiation, those who plan to have these scans (whether doctor or patient does not notice) need to question the “need” well. When used correctly, it is very important to determine who should perform this screening and how often, under what conditions and the CT scan cost in Delhi. Otherwise, our bodies could become radiation dumps.

Computed Tomography: What Is Important To Know?

Computed tomography is a non-invasive x-ray diagnostic method that can serve as the basis or an additional source of information when making the correct diagnosis and prescribing the necessary treatment.

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Is computed tomography safe?

Yes, CT is considered a safe method. X-ray dose is relatively low. There is a small risk in the presence of concomitant pathology of the kidneys, thyroid gland, bronchial asthma, if the use of contrast agents is used. It is good to know the CT scan price in Delhi before undergoing one.

The patient should warn the doctor if he is allergic to drugs, iodine, seafood, if he suffers from diabetes, bronchial asthma and thyroid diseases and about the drugs that he takes.

During pregnancy, the question of conducting a CT scan is decided by the attending physician; a woman must inform about the presence and timing of pregnancy!

Information for patients:

  1. As a rule, computed tomography is performed without preliminary preparation.
  2. With the use of intravenous contrast agent on an empty stomach.
  3. In chronic diseases of the liver and kidneys without exacerbation, moderate fluid intake is recommended 6 hours before the study.
  4. The study time is 15-25 minutes; scanning itself from 4 to 20 seconds.
  5. During the scan, you need a stationary body position on the table and the ability to carry out breath holding commands for 4-20 seconds.
  6. Before the study, clothing with metal hooks, buttons and zippers should be removed; jewellery in the form of chains and earrings.
  7. With the introduction of a contrast medium, the patient may feel a passing wave of heat.

To undergo research in the CT-MRI department, you should have:

The passport- A referral for the best CT scan in Delhi from a doctor, which indicates:

  1. Name
  2. No. of medical history or outpatient card
  3. The diagnosis
  4. The field of study with the formulation of a specific task (identification, exclusion or confirmation of the presence of changes on the part of the examined organs and systems)
  5. A note on the absence of contraindications for intravenous administration of a contrast medium (if the study is conducted with contrasting). When recording a patient, he is informed of the time of arrival at the department (and not the time of the start of the study)

Relative contraindications to the administration of contrast medium:

  • Pregnancy
  • Allergy to iodine-containing contrast agents
  • Severe hepatic and renal failure
  • Decompensated diabetes mellitus
  • Myeloma
  • Decompensated thyroid disease

Recommendations after computed tomography using a contrast agent:

* It is very rare for patients to have a rash on their skin, etc. - side effect of injection of iodine solution. Therefore, the outpatient should be under the supervision of a doctor in the CT-MRI unit for 2 hours, so that in case of a skin reaction he can receive timely medical help.

* If you have been given a contrast drug intravenously, it is recommended that you drink clean water within the amount allowed by your doctor for a day (1-3 l) in order to speed up the removal of the contrast drug from the body.

Chest CT Scan: The Best Way To Detect Lung Cancer

Lung cancer treatment is a process planned according to the patient's condition, type and stage of cancer. The treatment plan also takes into account factors such as the patient's general health and age.

If lung cancer is diagnosed at an early stage, surgical treatment is applied first and the recovery rate is very high. However, if the patient is not eligible for surgery, radiotherapy and / or chemotherapy may be recommended to destroy cancerous cells. Promising results can be obtained from targeted drug therapies in advanced stages of the disease. Deciding which treatment method to use will be increased by a group of specialists.

Lung cancer ranks first among cancer deaths worldwide. Despite the most advanced treatment methods, 86% of the patients die within five years. In the early stage, the probability of five-year survival is around 70%. For this reason, the world of science is making serious efforts to catch lung cancer in the very early stages period when it does not cause any complaint and the person does not need to consult a doctor.

Diagnosis

Tests that examine the lungs are used to detect (find), diagnose and stage non-small cell lung cancer. Tests and procedures to detect, diagnose and stage non-small cell lung cancer are often performed simultaneously. Some of the following tests and procedures can be used:

  • Physical examination and history: A body exam to check the common signs of health including control sings such as lumps, nodes or anything unusual. The doctor will also check the patient’s habits like smoking, work stress, illness and previous treatments or medicine if taken.
  • Laboratory tests- medical procedures that help test blood, urine, tissue or other substances from the body. These tests help in the diagnosis of diseases and further planning and controlling the treatment to monitor the disease over time.
  • Chest X-ray: An x-ray of the organs or bones located inside the chest. These energy beams help creating an image of the areas inside the body.
  • Chest CT scan cost in Delhi: A procedure that helps creating a series of detailed images of different areas within the body such as abdomen, chest. It is taken from different angles.

Who should have a CT scan?

Any patient over 40 years of age and who has smoked significantly (10 cigarettes or more, for 40 years, 20 or more cigarettes a day for 20 years or 40 or more cigarettes a day for 10 years) or smoked less, but with factors of risk of lung cancer: family history of lung cancer, residence for more than one year in the polluted region, occupational or environmental exposure to asbestos or arsenic or personal history of fibrosis and pulmonary emphysema.

Conclusion

Screening for lung cancer is a complex subject. Despite the encouraging results of the NLST study, many uncertainties remain. For this reason, lung cancer screening should not be promoted publicly outside of study protocols. Patients seeking individual screening should be informed in detail of the benefits and risks of screening, and sent at their own expense to multidisciplinary teams experienced in the diagnosis and treatment of lung cancer, who have established standardized procedures to ensure adequate screening. Coordinated and optimal care throughout the screening process.

Despite recommendations published by some expert groups, chest CT scans are still partially experimental and are not currently validated at the population level. It is important to know chest CT scan cost in Delhi before having one.

Tests To Detect Oesophageal Cancer

Usually, oesophageal cancers are discovered when a person has signs or symptoms. If oesophageal cancer is suspected, studies and tests will be necessary to confirm the diagnosis. If cancer is discovered, additional tests will be performed to help determine the extent of cancer.

Medical history and physical exam

If you have symptoms of oesophageal cancer, the doctor will ask questions about your medical history to analyze possible risk factors and learn more about the symptoms.

Your doctor will also do a test to detect possible signs of oesophageal cancer and other medical problems. The doctor will probably pay special attention to your neck and chest areas.

If the test results are abnormal, your doctor will probably order tests to help find the problem. You may also be asked to contact a gastroenterologist (a doctor who specializes in diseases of the digestive system) for further tests and treatment.

Imaging studies to find oesophageal cancer

The imaging using sound waves, X-rays, magnetic fields, or radioactive imaging inside the body substances. Imaging studies can be done for many reasons, such as:

  • Help find a suspicious area that could be cancer
  • Know if cancer has spread, and if so, how far
  • Help determine if the treatment is effective
  • Detect possible signs of cancer returning after treatment

Study with barium intake

In this test, the patient swallows a thick, limestone fluid called barium that covers the walls of the esophagus. When x-rays are taken, barium delineates the esophagus. This test can be done alone or as part of a series of x-rays that include the stomach and part of the intestine, called x-rays of the upper gastrointestinal tract. A barium intake test can show any abnormal area on the normally uniform surface of the inner lining of the esophagus, but cannot be used to determine how far cancer has spread outside the esophagus.

CT scan

A CT (computed tomography, CT) uses x - rays to produce detailed cross-sectionall images of the body. This study can help determine if oesophageal cancer has spread to nearby organs and lymph nodes (bean-shaped groups of immune system cells where cancers often spread first) or to distant parts of the body. Before conducting the study, you may be asked to drink approximately 1 to 2 pints (between half and one liter) of a liquid called oral contrast. This helps to delineate the esophagus and intestines. If you are having trouble swallowing, you should inform your doctor before the CT. Before having a CT scan, it is essential to know CT scan cost in south Delhi.

Magnetic resonance imaging

Like computed tomography (CT), the MRI (magnetic resonance imaging, MRI) provides detailed images of soft tissues. However, MRIs use powerful radio waves and magnets instead of X-rays. To better show the details, a contrast material, called gadolinium, may be injected into a vein before the study is done. MRI can be used to see abnormal areas in the brain and spinal cord that may be due to the spread of cancer.

Positron emission tomography

Generally, the positron emission tomography (positron emission tomography, PET) uses a form of radioactive sugar (known as fluorodeoxyglucose or FDG) is injected into the blood. Normal cells use different amounts of sugar, depending on how fast they are growing. Cancer cells, which grow rapidly, are more likely to absorb larger amounts of radioactive sugar than normal cells. These areas of radioactivity can be seen on a PET CT scan using a special camera.

Abdominal CT And Diseases In Which It Is Necessary

In the diagnosis of abdominal ailments for which no explanation is found with the most common medical tests, there is the possibility of performing an abdominal CT scan, which offers images that allow diseases of the digestive system and other internal organs of this part of the body to be detected.

What is an abdominal CT?

CT or computed tomography is a diagnostic test that uses x-rays to obtain images of the inside of the organism in the form of transverse cuts or, also, in the form of three-dimensional images.

Abdominal CT is especially suitable for determining the cause of pain in this area. Many of the structures of the abdomen contain air and cannot be seen well with other types of tests, such as abdominal echoes. It is then that abdominal CT is the best alternative to obtain a view of the abdomen, with the use of contrast, a liquid substance that can be given to the patient to drink or injected.

Characteristics of abdominal CT as a diagnostic test

Among the main features of CT Scan Abdomen, they highlight that it is a rapid and painless diagnostic test. It is nothing invasive, and its accuracy is better than other imaging tests.

CT images of the internal organs of the abdomen, as well as those of the bones, soft tissues, and blood vessels, have greater detail than those generated by radiographs, especially in the observation of soft tissues and blood vessels.

In addition, the technology that uses this type of apparatus allows the transverse images generated during the CT scan can be observed in multiple planes or even create three-dimensional images with them.

What is abdominal CT used for?

Due to its characteristics, it could be said that abdominal CT is a diagnostic test that serves to explain diseases that have not been able to be compared with other tests.

It is often used to determine the origin of an abdominal pain for which no explanation is found, and in emergencies, it can identify injuries and internal hemorrhages quickly enough to help save lives.

It is also effective for the diagnosis and treatment of urological conditions, in the observation of patients who have been operated and in the monitoring of oncological processes.

Diseases in which abdominal CT is useful

Specifically, abdominal CT is used to diagnose the reason of having abdominal or pelvic pain, and for the detection and monitoring of diseases of the internal organs, the small intestine and the colon.

It is used to detect infections, such as appendicitis or accumulations of infected fluid (abscesses), and can help detect stones in the kidneys and bladder.

Abdominal CT scans are also used in the diagnosis of inflammatory bowel diseases (Crohn's disease, pancreatitis, liver cirrhosis, etc.) and are used in the evaluation and treatment of various tumors, such as liver, kidney, pancreas, cancer of ovaries and bladder, as well as lymphoma.

If you are waiting for this test and do not want to wait any longer, from our medical services website, we can manage your performance, with the appropriate medical advice and a network of more than 5,000 private centers arranged. It is good to know CT scan abdomen cost in Delhi before going to have one.

Indications For PET/CT Of The Whole Body

PET/CT is an effective and modern method for the diagnosis of cancer. The method combines the capabilities of positron emission (PET) and computed tomography (CT) scans and allows with a high degree of confidence to establish the presence of a malignant formation.

To identify abnormal cells, various radiopharmaceuticals are used. A full-body PET/CT scan is performed with 18F-fluorodeoxyglucose (18F-FDG), a preparation that is prepared on the eve of the study, taking into account the individual characteristics of the patient. Diagnosis is based on assessing the metabolic rate of cells at the molecular level; therefore, it allows to detect a malignant tumor with a size of 4-5 mm. Smaller tumors do not reveal the resolving power of modern PET/CT scanners.

The procedure has several advantages:

  • The possibility of identifying cancer tumors at an asymptomatic stage;
  • Safety of the technique, lack of pain;
  • Ambulatory without surgical intervention;
  • Obtaining complete information about the prevalence of the malignant process in the body.

Indications for PET/CT of the whole body

PET CT scanallows you to evaluate the extent of the tumor lesion of the patient and correctly determine the stage of the disease. Information on how far the malignant cells have spread is extremely important for choosing treatment tactics. An examination of patients undergoing radiotherapy and chemotherapy or having undergone it is necessary to monitor the results of the prescribed treatment- a PET / CT scan will show how the tumor is changing, and will allow you to see new foci and relapses.

Full-body PET/CT with 18F-fluorodeoxyglucose isperformed for:

  • Detection of metastases and primary foci of the tumor;
  • Determining the extent of the tumor process;
  • Evaluation of the effectiveness of treatment;
  • Differentiation of benign and malignant tumors;
  • Planning treatment tactics.

At PET Technology centers, 18F-FDH is diagnosed with the following diseases: malignant skeleton tumors, melanoma, Hodgkin’s disease, and non-Hodgkin’s lymphomas, soft tissue sarcomas, thyroid cancer, mammary glands, cervix, thymus, testicles, lungs, pancreas glands, ovaries, stomach, and intestines.

Full body PET / CT preparation

Whole body PET scan Delhi is based on the analysis of cell metabolism, and a number of external factors affect it. In order for the doctor to get accurate data, you need to properly prepare for the examination.

Two days before the procedure, exclude alcohol and carbohydrate foods (everything that contains glucose, fructose, lactose, and complex carbohydrates: sweets, cereals, flour, milk, sweet drinks);

Stop eating 6 hours or more before visiting the center. Scanning is carried out on an empty stomach, if possible in the morning;

Before the study, you need to drink more fluid;

Two days before pet / ct, you can’t super cool, physical activity is prohibited: cold and intense movement affect metabolism in the body’s tissues;

Bring warm, comfortable clothes without metal elements (zippers, buttons, etc.), replaceable shoes. Things should not tighten or squeeze;

Bring for examination the data of past studies and examinations, expert opinions about your disease.

Important: patients with diabetes should first consult with an endocrinologist. The presence of glucose in the radiopharmaceutical used can cause complications of the disease or reduce the reliability of the results. Also, the doctor should be warned about pregnancy, breastfeeding, the presence of allergies to medications, claustrophobia, and the inability to lie still for 40 minutes.

Diagnostic Imaging Of The Chest – Lung Scan

The diagnostic imaging of the chest includes radiography, computed tomography (CT), magnetic resonance imaging (MRI), scintigraphy, ultrasound, and positron emission tomography (PET). Radiography is almost always performed. Other imaging tests are carried out as necessary to obtain specific information for the purpose of formulating the diagnosis.

The chest X-ray

It is performed routinely from the back to the front. In general, an image of the lateral section is also acquired. Chest X-rays provide a good definition of the profile of the heart and large blood vessels and can usually reveal a serious disease of the lungs, pleural cavities, or rib cage, including the ribs. For example, chest radiographs may show pneumonia, some lung cancers, chronic obstructive pulmonary disease, lung collapse (atelectasis), and the passage of air (pneumothorax) or fluid (pleural effusion) in the pleural cavity. Although thoracic radiographs rarely provide sufficient information to determine the exact cause of these abnormalities.

A computed tomography (CT) of the chest provides more detail than a simple radiograph. With the CT, a series of radiological images is analyzed with a computer, which, subsequently, provides multiple projections on different planes, such as longitudinal and transverse sections. Before having a CT scan it is good to know CT scan cost in Delhi NCR. During CT, a visible X-ray substance (called a radiopaque contrast agent) can be injected into the bloodstream or administered orally to establish the nature of certain abnormalities in the chest. High-resolution CT and spiral CT are more specialized CT procedures. High-resolution CT can reveal further details in relation to lung diseases. Spiral CT can produce three-dimensional images.

It includes the injection of a radiopaque contrast medium into a vein in the arm to create images of blood vessels, along with the artery that carries blood from the heart to the lungs (pulmonary artery). Currently, angiography is used instead of scintigraphy to diagnose the presence of blood clots in the pulmonary artery (pulmonary embolism).

Even the magnetic resonance imaging (MRI) provides very detailed images, which are especially useful in the case of vascular changes suspect in the chest, such as an aortic aneurysm. However, the MRI takes longer and has higher costs than the TC. Furthermore, the MRI resolution is lower than that of CT for the diagnosis of abnormalities in the lungs, and therefore this examination is not frequently used in the field of diagnostic imaging. The cost of CT scan in Delhi vary according to the place it is going to be held. Unlike CT, MRI does not use radiation.

The lung scan may be useful to detect the presence of blood clots in the lungs (pulmonary emboli); however, in the diagnostic process of this disease, it has been largely replaced by ' CT angiography. Scintigraphy can also be used during the preoperative evaluation of patients with lung cancer. Pulmonary scintigraphy uses modest amounts of short-lived radioactive material to define the flow of air and blood through the lungs. Usually, the test is performed in two phases.

In the first phase (perfusional lung scan), a radioactive substance is injected into a vein, and a scanner reproduces an image of the mode of distribution through the pulmonary vessels. If the perfusion ultrasonography is altered, a second phase (pulmonary ventilation ultrasound) is required; the patient inhales a radioactive gas, and the apparatus produces an image of the distributive pattern through the lungs.

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