You have no items in your shopping cart.
Show Location


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.

Diagnosis Of Lung Cancer

Regardless of the context of discovery, a number of investigations must be performed to confirm the diagnosis of lung cancer and evaluate its stage.

The diagnostic balance is based mainly on:

  • A clinical examination- The objective of the clinical examination is to make an assessment of your general condition using various means such as performance status, to identify your medical history and the pathologies you suffer from, to list your current treatments, your risk factors and your smoking addiction, if you smoke, to assess the possible frailty of elderly patients using specific questionnaires and scales.
  • A chest x-ray- The purpose of this examination is to reveal the presence of abnormalities in the lungs. However, the X-ray does not make it possible to determine whether an abnormality discovered is benign or malignant. And, moreover, it does not always detect an anomaly, even if it is actually present in the lung.
  • A chest scanner- It is a question of identifying the presence or absence of an anomaly and, if so, its size and location. This examination detects anomalies even of very small size (less than or equal to 3 millimeters). The scanner gives no indication of the type of cells in question. In the case of lung cancer, the CT scan done by the best CT scan centre in Delhi can identify if the nearby lymph nodes are abnormally large. But it does not make it possible to specify whether or not they are affected by cancer cells. Before going to have a CT scan, it is important to know the chest CT scan cost in Delhi.
  • Biopsy. The biopsy makes it possible to recover tissue samples that seem abnormal for analysis and to determine whether they are of a cancerous nature or not. These samples can also be stored after the operation in a tumor library (tumor library) for further research.
  • In some situations, it is not possible, before treatment, to obtain a histological diagnosis, which requires an analysis of tissues taken from the tumor. This is then performed during the surgical procedure. The operation then has a diagnostic and therapeutic purpose.

Bronchial fibroscopy

The bronchoscopy is the key diagnostic for lung cancers. It allows doctors to observe the inner wall of the trachea and bronchi, as well as to take samples at the level of suspicious lesions (biopsy).

These tissue samples are then analyzed under a microscope to confirm or deny the nature of the lesions. In the case of proven cancer, it is then possible to determine which tumor subtype is detected and thus to choose the most appropriate treatment.

Specifically, a flexible tube containing a miniature camera and sampling instruments is introduced into the bronchi, via the trachea and the patient's nose.

The examination is unpleasant, but it is not painful because it is performed under local anesthesia. It lasts 10 to 20 minutes. It is necessary to be fasting for at least two hours before the beginning of fibroscopy.

Due to the (low) risk of hemorrhage associated with the examination, it is recommended that you do not take aspirin within 10 days of the exam. People on anticoagulant therapy should report it.

Benefit of CT Scan of the Chest

Computed tomography occupies an essential place in the diagnosis of diseases of the lungs and mediastinal organs. The procedure is based on the use of X-rays with further reproduction of the obtained data in the form of images on a computer screen. In contrast to conventional X-rays, computed tomography shows color images on the screen, which makes it possible to more correctly assess the state of scanned objects and diagnose diseases of the lungs, blood vessels, heart, and esophagus. Computed tomography of the chest is an indispensable method for diagnosing lung cancer, tuberculosis, and pneumonia. This method is also highly informative when diagnosing diseases of the mediastinum organs: lymphomas, aneurysms, thromboembolism, etc.

When conducting computed tomography, an object is scanned from all sides with an X-ray beam. The tomograph sensors record the speed of passage of the beam. The received information goes to a computer, where individual programs process it, and later on, three-dimensional images of the scanned area are displayed on the screen. On such pictures, pathological educations are well visualized. The main advantage of computed tomography is that it allows you to identify various diseases even in the early stages, which further significantly affects the entire process of treatment.

The main indications for chest CT scan are:

•       Infectious diseases

•       Inflammatory diseases

•       Pulmonary embolism

•       Tumor diseases

•       Pathologies of large blood vessels of mediastinal organs

•       Lymph node lesions

In some cases, computed tomography of the chest is performed with prior contrasting. With CT with contrast, immediately before the start of the scan, an iodine-containing contrast agent is injected intravenously. This method of carrying out makes it possible to more thoroughly evaluate the work of the studied organ, the state of its vessels and tissues. However, CT with contrast cannot be used in some groups of patients, since they have diseases in which the use of a contrast agent is contraindicated.

Benefits of Chest Tomography

High image clarity, since the resolution of most modern devices, is at least 1-1.5 millimeters. This greatly facilitates the work of the diagnostician, allows you to interpret the data accurately.

The ability to obtain images in three-dimensional mode, thanks to the function of volumetric imaging computed tomography. The appearance of artifacts caused by the involuntary movements of patients is minimized.

Viewing images of chest slices in retrospective mode at any time after the study, subject to preservation of data on a hard disk or CD. The reconstruction step can vary widely.

The undoubted advantages that can be assessed not only by diagnosticians but also by patients who have undergone a study with a tomograph include

•       Efficiency diagnostics, which takes no more than 15-20 minutes.

•       The painless method that does not even cause discomfort.

•       The accuracy of the diagnosis, based on the data obtained.

•       The relatively low price of chest CT, especially in comparison with MRI.

Today, Computed Tomography of the chest is one of the most accurate and accessible diagnostic methods. Due to the short study time and minimal X-ray load, computed tomography is increasingly used to diagnose various diseases.

Is CT Scan Imaging Same as MRI?

Both MRI and CT are two of the significant advances in current medicine since they allow the examination and detection of diseases using non-invasive methods, without the use of pesky and aggressive techniques such as lumbar punctures or arthrography for the patients.

For both reviews, the patient should lie on a stretcher and enter a relatively narrow cylindrical tunnel. The difference is that in MRI test the tube is a large electromagnetic magnet that allows you to take pictures of the inside of the body by subjecting it to a magnetic field. In a CT, the images are taken using an X-ray beam that makes a circular movement that surrounds the area to be investigated (multiple X-rays from various angles).

With the CT tests, it is possible to reconstruct in three dimensions the area explored, which is very useful when planning a surgery and is the order of the day to locate and treat tumors. Both are image tests, but they are not the same. The CT Scan cost is highly dependent on the scan center and clinic you are going for!

Magnetic resonance uses powerful magnetic fields to produce and detect changes at the molecular level of substances like the hydrogen that contains our body. These changes are very subtle and disappear when we leave the machine, but the machine can detect them and translate them into images of the interior of the body.

Both CT and resonance allow us to explore the inside of the body, but each one is more sensitive to a particular type of injury, so your doctor will indicate the one that is most appropriate as the case may be.

What is a CT Scan Test? What Does it Consist of?

The CT scan test is performed with a device called a scanner. During this test, the body is subjected to multiple rays released simultaneously from different angles, and then a computer assembles them to generate an image of the area to be studied. CT scanning is more detailed than an x-ray since only a beam of light is used on the current x-ray.

Because CT scan is a non-invasive procedure that provides detailed cross-sectional views of all tissue types, it is becoming the ideal method to diagnose many intestinal diseases such as diverticulitis and appendicitis and to visualize the liver, spleen, pancreas and the kidneys.

And Magnetic Resonance- What Does it Consist of?

On the other hand, Magnetic Resonance is a machine that allows obtaining an image of the soft tissues of a patient using the use of a magnetic field. Powerful magnets and radio waves are used to create body images. The main difference between CT and MRI test is that the second one does not use X-rays. Other differences are that the CT scan is faster to perform but has a lower resolution.

Because MRI test can give such clear images of the soft tissues around the bones, it is the most appropriate examination for spine and joint problems. It is also widely used to diagnose sports injuries, especially in the knee, shoulder, hip, elbow, and wrist. The images allow the doctor to see even tiny tears and lesions in the ligaments and muscles.

Show Footer