Podcast
Questions and Answers
What is a Pancoast tumor?
What is a Pancoast tumor?
- Tumor of the lung and chest wall (correct)
- Tumor of the pancreas
- Tumor of the stomach and small intestine
- Renal tumor
What condition is suggested by the presence of fluid levels in the native abdomen?
What condition is suggested by the presence of fluid levels in the native abdomen?
- Crohn's disease
- Herniation
- Appendicitis (correct)
- Ileal control
What is Lerish syndrome associated with?
What is Lerish syndrome associated with?
- Thrombosis of the hepatic vein
- Complete aortic occlusion (correct)
- Pulmonary embolism
- Obstruction of lymphatic vessels
Which method is the choice for examining tumors of the oral cavity, stomach, liver and prostate?
Which method is the choice for examining tumors of the oral cavity, stomach, liver and prostate?
How is primary hepatocellular carcinoma most commonly associated?
How is primary hepatocellular carcinoma most commonly associated?
What is one indication for performing arthrography?
What is one indication for performing arthrography?
Which of the following is a disadvantage of panoramic radiography?
Which of the following is a disadvantage of panoramic radiography?
Intraoral radiography using the bisecting angle technique is associated with which of the following?
Intraoral radiography using the bisecting angle technique is associated with which of the following?
What are the basic views used in intraoral radiography?
What are the basic views used in intraoral radiography?
Bitewing view radiographs are primarily used for what purpose?
Bitewing view radiographs are primarily used for what purpose?
Which statement about intraoral radiography is correct?
Which statement about intraoral radiography is correct?
Soft tissue changes revealed by arthrography may include what?
Soft tissue changes revealed by arthrography may include what?
Which technique is typically preferred for obtaining periapical images?
Which technique is typically preferred for obtaining periapical images?
Which imaging modalities are used for prenatal diagnosis?
Which imaging modalities are used for prenatal diagnosis?
What type of probe is used to examine abdominal organs?
What type of probe is used to examine abdominal organs?
What are the characteristics of liver cysts?
What are the characteristics of liver cysts?
In which examination is the patient not exposed to X-rays?
In which examination is the patient not exposed to X-rays?
What does a Krukenberg’s tumor signify?
What does a Krukenberg’s tumor signify?
Which of the following is a form of acute pancreatitis?
Which of the following is a form of acute pancreatitis?
In the Seldinger method, where is the catheter introduced?
In the Seldinger method, where is the catheter introduced?
Which disease of the TMJ is characterized by narrowing of the joint space and irregular joint space?
Which disease of the TMJ is characterized by narrowing of the joint space and irregular joint space?
Which statement about Barium sulfate suspension is incorrect?
Which statement about Barium sulfate suspension is incorrect?
Codman’s triangle is associated with which condition?
Codman’s triangle is associated with which condition?
Claudication pains are characterized as what type of pain?
Claudication pains are characterized as what type of pain?
During contrast MR examination, which type of contrast agents are mainly used?
During contrast MR examination, which type of contrast agents are mainly used?
Who discovered X-rays?
Who discovered X-rays?
A contraindication to CT angiography is which of the following?
A contraindication to CT angiography is which of the following?
To examine the abdominal organs, which type of probe is most suitable?
To examine the abdominal organs, which type of probe is most suitable?
What is the main indication for using occlusal projection in radiography?
What is the main indication for using occlusal projection in radiography?
How does dental caries appear on radiographs?
How does dental caries appear on radiographs?
Which statement about cervical burnout and dental caries is correct?
Which statement about cervical burnout and dental caries is correct?
What type of bone loss is associated with early periodontitis?
What type of bone loss is associated with early periodontitis?
Which feature indicates luxation of a tooth on a radiograph?
Which feature indicates luxation of a tooth on a radiograph?
How does a dentigerous cyst appear radiographically?
How does a dentigerous cyst appear radiographically?
What is the typical radiographic appearance of an ameloblastoma of the mandible?
What is the typical radiographic appearance of an ameloblastoma of the mandible?
Which of the following is an incorrect statement about tumors?
Which of the following is an incorrect statement about tumors?
Which of the following statements about Dopier dyeing is true?
Which of the following statements about Dopier dyeing is true?
What plane divides the human body into right and left parts?
What plane divides the human body into right and left parts?
What is the status of MRI examinations during pregnancy?
What is the status of MRI examinations during pregnancy?
Which of the following is NOT a cause of carcinomatous lung lymphangiopathy?
Which of the following is NOT a cause of carcinomatous lung lymphangiopathy?
What describes echogenicity in ultrasound imaging?
What describes echogenicity in ultrasound imaging?
Which method is best for diagnosing a hemorrhagic stroke of the brain?
Which method is best for diagnosing a hemorrhagic stroke of the brain?
What was the first X-ray machine in Slovakia used by?
What was the first X-ray machine in Slovakia used by?
How is the density of CT examination expressed?
How is the density of CT examination expressed?
Flashcards
Arthrography
Arthrography
A medical imaging technique that uses contrast agents injected into joint spaces to visualize structures like cartilage, ligaments, and tendons on X-ray images.
Arthrography Uses
Arthrography Uses
Arthrography helps identify joint abnormalities like tears, inflammation, and bone spurs that might not be visible on regular X-rays.
Panoramic Radiography
Panoramic Radiography
A dental X-ray technique that captures a wide view of the upper and lower jaws, including teeth and supporting bone.
Panoramic Radiography Advantages
Panoramic Radiography Advantages
Panoramic X-rays are useful in patients who have difficulty opening their mouths or have limited jaw movement.
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Intraoral Radiography
Intraoral Radiography
A dental X-ray technique that utilizes a film placed inside the mouth to capture images of individual teeth and surrounding bone.
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Paralleling Technique
Paralleling Technique
An intraoral radiography method where the X-ray beam travels parallel to the long axis of the tooth, resulting in more accurate images.
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Bisecting Angle Technique
Bisecting Angle Technique
An intraoral radiography method where the X-ray beam is directed perpendicular to an imaginary line that bisects the angle between the tooth and the film.
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Bitewing View
Bitewing View
An intraoral radiography view that shows the crowns of both upper and lower teeth, particularly useful for detecting cavities between teeth.
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Occlusal Projection
Occlusal Projection
A type of extraoral radiography used primarily to diagnose interproximal caries and study the maxillary and mandibular arches.
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Dental Caries on X-rays
Dental Caries on X-rays
Dental caries (cavities) appear as radiolucent areas on dental x-rays.
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Cervical Burnout
Cervical Burnout
A radiographic artifact that might be mistaken for dental caries, appearing as a darkened area near the neck of the tooth.
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Periodontal Bone Loss
Periodontal Bone Loss
Periodontal disease causes bone loss around teeth, visible on x-rays as a change in the relationship between the cementoenamel junction (CEJ) and the crest of the alveolus.
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Luxation on X-rays
Luxation on X-rays
A luxated tooth (displaced from its socket) will show a widened periapical ligament space on occlusal projections.
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Tooth Fracture on X-rays
Tooth Fracture on X-rays
Tooth fractures show as radiolucent lines between tooth segments, displacement of fragments, and disruption of the tooth's surface on x-rays.
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Cysts on X-rays
Cysts on X-rays
Cysts are fluid-filled sacs that appear as radiolucent (dark) areas on x-rays.
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Ameloblastoma X-ray Appearance
Ameloblastoma X-ray Appearance
Ameloblastoma of the mandible often shows a multilocular (many chambers) cyst-like lesion, resembling a honeycomb or soap bubble appearance on x-rays.
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Pancoast tumor
Pancoast tumor
A type of lung cancer that grows in the upper part of the lung, often affecting the chest wall and surrounding nerves.
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Fluid levels in the native abdomen
Fluid levels in the native abdomen
Indicates the presence of free fluid in the abdominal cavity, which could suggest conditions like appendicitis, Crohn's disease, or bowel obstruction.
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Leriche syndrome
Leriche syndrome
A condition caused by a complete blockage of the aorta, typically affecting the iliac arteries and leading to pain, weakness, and coldness in legs.
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MR for examination
MR for examination
Magnetic Resonance Imaging (MRI) is a powerful technique used for examining various organs like the brain, prostate, ovaries, liver, and cervix due to its ability to create detailed images of soft tissues.
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Convex probe for abdomen
Convex probe for abdomen
A type of ultrasound probe with a curved shape designed for examining abdominal organs, as it provides a wide field of view.
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TMJ Degenerative Joint Disease
TMJ Degenerative Joint Disease
A condition affecting the temporomandibular joint characterized by narrowing of the joint space, irregular joint space, subchondral sclerosis, cyst-like areas, osteophytes, and facet formation on the condylar head.
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Barium Sulfate Suspension
Barium Sulfate Suspension
A contrast media used for X-ray imaging of the gastrointestinal tract, specifically the esophagus, stomach, and intestines.
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Codman’s Triangle
Codman’s Triangle
A triangular radiolucent area seen on X-rays, indicating a destructive bone cancer.
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Claudication Pain
Claudication Pain
Pain in the legs, especially during exertion, caused by inadequate blood flow.
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Contrast MR Examination
Contrast MR Examination
Magnetic Resonance Imaging (MRI) using contrast agents, primarily gadolinium, to enhance the visualization of tissues.
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X-ray Discovery
X-ray Discovery
Wilhelm Conrad Röntgen discovered X-rays in 1895.
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Contraindication for CT Angiography
Contraindication for CT Angiography
A person with a positive allergic history to iodine preparations should not undergo CT angiography.
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Ultrasound for Cholecystolithiasis
Ultrasound for Cholecystolithiasis
Ultrasound (USG) is the initial investigation of choice for suspected gallstones (cholecystolithiasis).
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Dopier Dyeing
Dopier Dyeing
A technique used in urology and gynecology to visualize the vascularization of tumors. It involves injecting a dye into the blood vessels, making them visible on imaging. However, this technique is no longer used due to its harmful effects.
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Sagittal Plane
Sagittal Plane
The plane that divides the human body into right and left sections, like slicing a loaf of bread. This plane runs vertically from head to toe.
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MRI during Pregnancy
MRI during Pregnancy
MRI examination is an absolute contraindication throughout pregnancy due to potential teratogenic (causing birth defects) effects on the fetus.
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Lymphangiopathy in Lung Cancer
Lymphangiopathy in Lung Cancer
Lymphangiopathy is a secondary spread of cancer to the lungs through lymphatic vessels. This is common in lung cancer, and often arises from tumors of the digestive tract or breast.
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Echogenicity
Echogenicity
Echogenicity describes how different tissues reflect sound waves during an ultrasound exam. Tissues can be anechoic (no reflection), hypoechoic (low reflection), isoechoic (similar reflection), or hyperechoic (high reflection).
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Hemorrhagic Stroke Imaging
Hemorrhagic Stroke Imaging
For diagnosing a hemorrhagic stroke, a native CT scan (without contrast dye) is the most appropriate method. This is because the blood itself shows up brightly on the scan, making it easily identifiable.
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CT Density Measurement
CT Density Measurement
The density of tissues in a CT scan is measured in Hounsfield units (HU). This unit allows for precise assessment of the different density of tissues in the body.
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MRI Main Indications
MRI Main Indications
MRI is valuable for examining various conditions. These include multiple sclerosis, herniated discs in the spine, and injuries that involve soft tissues or tendons. However, it is not the primary method for detecting bone fractures.
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Prenatal Ultrasound
Prenatal Ultrasound
Prenatal ultrasound uses sound waves to create images of the developing baby and the mother's uterus. This helps doctors assess the baby's growth, health, and position.
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Abdominal Ultrasound with Convex Probe
Abdominal Ultrasound with Convex Probe
A convex probe, curved like a dome, is used to examine the abdominal organs with ultrasound. It offers a wide field of view for imaging.
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Liver Cyst Types
Liver Cyst Types
Liver cysts can be single, a solitary cyst, multiple, several cysts, or echinococcal, caused by a parasite.
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MR Examination and X-rays
MR Examination and X-rays
Magnetic Resonance Imaging (MR) doesn't use X-rays. It uses magnetic fields and radio waves to create detailed images of the body.
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Krukenberg's Tumor
Krukenberg's Tumor
A Krukenberg tumor is a type of ovarian cancer that spreads to the stomach. It often causes abdominal pain and digestive issues.
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Acute Pancreatitis Forms
Acute Pancreatitis Forms
Acute pancreatitis, inflammation of the pancreas, can be mild (edematous) or severe (hemorrhagic-necrotic).
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High Diaphragm: Think Subphrenic Abscess
High Diaphragm: Think Subphrenic Abscess
If the diaphragm is high, it suggests a potential problem in the abdomen, like a subphrenic abscess, an infection under the diaphragm.
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Seldinger Method and Catheterization
Seldinger Method and Catheterization
The Seldinger method is a technique used to insert a catheter into a blood vessel, usually the femoral artery or vein in the leg.
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Examination for Dentists
- Radiopaque Structures: Structures that appear dark on a radiograph, such as bone and calcification.
- Inverted 'Y' Configuration: Formed by the merging of the maxillary sinus and lateral nasal wall. It's an anatomical landmark, commonly seen in canine or premolar regions.
- Osteomyelitis: Appears as a radiopaque area with unclear borders.
- Radiographic Appearance of Structures: Sialoliths, exostoses, and enostoses appear white on a radiograph. Radiolucency is a radiographically dark area of any sort. Odontogenic keratocysts may appear radiolucent.
- Sialography: A useful diagnostic method for detecting ductal stones. Obstructions result in a filling defect or ductal dilation. Not helpful for autoimmune diseases.
- CT Examination with Contrast Agent: Avoid in pregnant patients and those with hyperthyroidism or suspected subarachnoid hemorrhage.
- Dental Cone Beam Imaging: Generates panoramic cone-shaped images of the head and neck, primarily to produce large images.
- MRI and Contraindications: Dental implants and heart pacemakers are contraindications. MRI is helpful in differentiating malignant from normal tissue.
- MRI of the Brain: On a T2-weighted image, gray matter appears darker than white matter.
- Arthrography: A diagnostic technique that involves injecting contrast into a joint and then taking X-rays. It's used to diagnose joint infections, fibrosis related to trauma, and post-surgery assessment of TMJ.
- Panoramic Radiography: Provides a broader view of upper and lower jaws, useful for detecting broader issues, especially where mouth opening is restricted. Not as crisp as intraoral imaging.
- Intraoral Radiography, Paralleling Technique: Utilizes an X-ray beam to image teeth perpendicular from a central x ray beam that passes through the center of the image and the bisector between the film and the tooth.
- Intraoral Radiography, Bisecting Angle Technique: A technique for intraoral radiography where the film is positioned close to the teeth, and the x-ray beam is angled to the bisector of the angle formed between the film and the long axis of the tooth. This method provides periapical projection but not bitewing projection.
- Bitewing Views: Capture the crowns of upper and lower teeth to detect interproximal caries.
- Occlusal Projection: Primarily for studying the arches for studying interproximal caries.
- Dental Caries: Appears radiolucent.
- Periodontal Diseases: Associated with horizontal bone loss and osseous defects characterized by radiographic relationship of cementoenamel junction (CEJ) with crest of the alveolus.
- Diagnosis of Trauma: Radiolucent lines between tooth segments, tooth fragment displacement, and disrupted surface continuity are signs of fracture.
- Cysts: Appear radiolucent and typically involve a sclerotic (dense) or hyperostotic (porous) border. Other examples include naso-palatine and odontogenic cysts.
- Tumors: Usually are either radiopaque or radiolucent, with a multilocular or unilocular radiographic appearance .
- Contrast Media: Barium sulfate suspension are used to improve visualization of the gastrointestinal tract.
- Various Methods for Liver Biopsy: Liver biopsy is done when there is a need to evaluate tissue from the liver to diagnose conditions. Multiple procedures are available (USG/CT, laparoscopic) and are performed under local or general anesthesia..
- Liver Biopsies: Can be performed with various modalities (CT, Ultrasound), frequently using a biopsy “cannon”.
- Contraindications for MRI: Dental implants and heart pacemakers are contraindications for MRI. MRI may be useful for differentiating malignant tissue from normal tissue.
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