Podcast
Questions and Answers
What is the most valuable radiographic study for bowel infarction?
What is the most valuable radiographic study for bowel infarction?
- Barium meal examination
- Dedicated single contrast small bowel examination
- Enteroclysis
- Plain film of the abdomen (correct)
What is required for a dedicated single contrast small bowel examination?
What is required for a dedicated single contrast small bowel examination?
- Only overhead films are required
- Fluoroscopic monitoring only
- Compression view is not necessary
- Compression spot films and taken overhead films (correct)
What is a limitation of a dedicated single contrast small bowel examination?
What is a limitation of a dedicated single contrast small bowel examination?
- It cannot detect small ulcerations (correct)
- It is a continuation of the barium meal examination
- It is a separate examination from barium meal
- It can detect small ulcerations
How much barium suspension is administered orally for a single contrast examination?
How much barium suspension is administered orally for a single contrast examination?
What is evaluated in a dedicated single contrast small bowel examination?
What is evaluated in a dedicated single contrast small bowel examination?
What is a characteristic of enteroclysis?
What is a characteristic of enteroclysis?
What is an advantage of enteroclysis over a dedicated single contrast small bowel examination?
What is an advantage of enteroclysis over a dedicated single contrast small bowel examination?
What is true about enteroclysis?
What is true about enteroclysis?
What is a limitation of a dedicated single contrast small bowel examination in detecting small ulcerations?
What is a limitation of a dedicated single contrast small bowel examination in detecting small ulcerations?
What is the relationship between enteroclysis and a dedicated single contrast small bowel examination?
What is the relationship between enteroclysis and a dedicated single contrast small bowel examination?
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Study Notes
Lung Patterns on Chest X-Ray
- Interlobular interstitial spaces may be prominent, but this does not include viral pneumonia
- Alveolar aeration may not be maintained, leading to a reticular or reticulonodular pattern
- The pattern may be focal or bilateral
- Hypovascular lung may appear in pulmonary artery aneurysm, right-to-left shunt, or pulmonary artery stenosis
- It can cause focal lucency or diffuse lucency on the chest X-ray
Pneumococcal Pneumonia on Chest X-Ray
- Characteristics: triangular opacity with the tip toward the hilum, homogeneous, medium intensity
- May have air-bronchogram
Bronchopneumonia on Chest X-Ray
- Characteristics: nodular opacities of varying sizes, usually located on the bases of the lungs
Aspiration Pneumonia on Chest X-Ray
- May have irregular radiolucent areas or irregular areas of increased density
- Can be bilateral and may progress to conglomerate opacities
- Can be caused by aspiration of gastric contents, leading to pulmonary edema
Mycoplasmal Pneumonia on Chest X-Ray
- May have bilateral reticulo-nodular pattern
- Cannot be represented by lobar or segmental opacities
- Is a primary atypical pneumonia
Lung Abscess on Chest X-Ray
- Can be a hydro-aeric image or a consolidation
- Differential diagnosis includes pneumonia, lung cancer, hydatid cyst, and fungal infection
- Can be caused by aspiration of foreign material or surgery of the respiratory tract
Primary TB
- Cavitation can appear
- May have mediastinal adenopathies
- Can give hematogeneous spread
Scintigraphic Method
- Can provide information about ectopic tissue
- Can be done with gamma-emitting radioisotopes
- Tomographic acquisition can be SPECT or PET
- Offers predominantly functional images
131I
- Can be used for diagnostic thyroid scintigraphy
- Can be used for radioiodine therapy of thyroid cancer
- Emits gamma radiation
- Is not a stable isotope of iodine
Radiopharmaceutical
- Can be represented by a radioisotope + vector (tracer) molecule
- May include an alpha-emitting radioisotope
- Can be administered intravenously or orally
- Is eliminated primarily by the renal route
- Offers predominantly functional images
99mTc
- Is the metastable form of technetium
- Has a half-life of 6 hours
- Can be used in SPECT-CT or SPECT
- Emits gamma radiation
- Can be used to highlight glucose-consuming tissues
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