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Related Concept Videos

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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Area Computation by the Alternative Coordinate Method01:24

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The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
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Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
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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.
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A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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Updated: Jan 22, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Imaging techniques and computers

C Giorgi1

  • 1Division of Neurosurgery, Istituto Nazionale Neurologic C. Besta, Milano, Italy.

Stereotactic and Functional Neurosurgery
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

Advanced imaging and computing power enhance stereotactic surgery. New navigation aids improve tissue sampling, functional procedures, and image-guided surgery for deep brain lesions.

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Area of Science:

  • Neurosurgery
  • Medical Imaging
  • Surgical Navigation

Background:

  • Stereotactic technique has historically relied on imaging advancements.
  • Recent improvements in neuroimage quality and computing power have expanded stereotactic applications.

Purpose of the Study:

  • To review the evolution and current applications of imaging technology in stereotactic surgery.
  • To highlight advancements in stereotactic instrumentation and navigational aids.

Main Methods:

  • Fusion of multimodal digital images.
  • Integration of morphological and functional data.
  • Dimensional rendering techniques for surgical planning.
  • Image processing and computer graphics for radiosurgery planning.
  • Intraoperative stereotactic echographic and microscopic imaging.

Main Results:

  • Multimodal image fusion and rendering provide effective navigational aids for various procedures.
  • Advanced planning systems facilitate interactive evaluation of radiation dose and tissue volumes.
  • Volumetric guided surgery with intraoperative imaging enables successful treatment of deep-seated cerebral lesions.

Conclusions:

  • Imaging technology continues to drive stereotactic surgery forward.
  • Integration of advanced imaging and computational tools significantly enhances surgical precision and outcomes.
  • Future developments in integrated localizing solutions promise further improvements in microsurgery.