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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Imaging Studies I: CT and MRI01:14

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
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Computed Tomography01:10

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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X-ray Imaging01:24

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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[Imaging in head and neck cancers].

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Head and neck cancer management relies on multimodal imaging for planning treatments like surgery and radiotherapy. Understanding each imaging technique

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Area of Science:

  • Oncology
  • Radiology
  • Medical Imaging

Context:

  • Head and neck cancer management necessitates comprehensive imaging throughout all treatment stages.
  • Multimodal imaging is crucial, requiring knowledge of each technique's strengths and weaknesses.
  • Accurate cervical anatomy understanding is vital for multidisciplinary team communication.

Purpose:

  • To outline the role and optimal application of various imaging modalities in head and neck cancer.
  • To highlight the advantages and limitations of different imaging techniques for oncologic planning.
  • To emphasize the necessity of anatomical knowledge for effective communication in cancer care.

Summary:

  • Computerized tomodensitometry (CT) is the gold standard for pharyngolarynx imaging.
  • Magnetic resonance imaging (MRI) is preferred for oral cavity, oropharynx, and nasopharynx.
  • Ultrasound effectively assesses cervical lymph nodes; functional and nuclear imaging show promise where morphological imaging is limited.

Impact:

  • Informs the selection of appropriate imaging techniques for precise diagnosis and treatment planning.
  • Facilitates the early detection of subclinical metastatic lymph nodes.
  • Aids in differentiating cancer recurrence from post-treatment changes and monitoring treatment response.