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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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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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Attachment is vital for infant development, as warm social interactions support growth and well-being. In a classic 1958 study by Harry Harlow, the significance of warmth and comfort in forming attachments was examined. Harlow separated newborn monkeys from their mothers and provided two artificial "mothers": one made of cold wire and the other covered in soft cloth. Despite the wire mother offering food, the infant monkeys preferred the comfort of the cloth mother, demonstrating that...
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Jeffrey Simpson's attachment theory suggests that early caregiver relationships shape lasting patterns of behavior and emotional regulation, known as attachment styles. These patterns are organized along two key dimensions: self-esteem and interpersonal trust. The intersection of these dimensions produces four primary attachment styles that typically persist throughout life and significantly influence how individuals form and maintain relationships.Secure Attachment StyleIndividuals with a...
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As cells progress into mitosis, the nuclear envelope breaks down, and the condensed chromosomes are exposed to the array of bipolar microtubules of the mitotic spindle. The kinetochore, a large, disc-shaped protein complex, is present at the centromere region of the sister chromatids and acts as a binding site for the microtubules.  Usually, the plus-end of a single microtubule is embedded within the kinetochore. However, some kinetochores first establish lateral contact with the side-wall...
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Customizing a Cryolite Glass Prosthetic Eye
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Using computed tomography and 3D printing to construct custom prosthetics attachments and devices.

Peter C Liacouras1, Divya Sahajwalla2, Mark D Beachler3

  • 11Department of Radiology, Walter Reed National Military Medical Center and Uniformed Services University of the Health Sciences, Bethesda, MD USA.

3D Printing in Medicine
|May 22, 2018
PubMed
Summary

Advanced 3D printing and CT imaging enable custom prosthetic devices for active wounded warriors. These innovations restore function and enhance quality of life for complex activities.

Keywords:
3D printingAdditive manufacturingComputed tomographyProstheticsRehabilitation

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • Additive Manufacturing

Background:

  • Military prosthetic devices are highly advanced, often not publicly available.
  • Active young patients require individualized prosthetic designs for complex activities.
  • Standard prosthetics may not meet the needs of highly active individuals.

Purpose of the Study:

  • To describe research pathways for implementing custom prosthetic designs.
  • To showcase the integration of computed tomography (CT) and 3D printing.
  • To detail the creation of specialized attachments for wounded warriors.

Main Methods:

  • Engineers and prosthetists collaborate on digital designs for rehabilitation needs.
  • 3D printing is utilized with materials ranging from plastic to titanium alloy.
  • Computed tomography (CT) scanning and digital reconstruction create virtual 3D models for custom designs.

Main Results:

  • Numerous custom prostheses and attachments have been successfully implemented in clinical settings.
  • Specific examples include bilateral hockey skates, weightlifting prosthetic hands, and a wine glass holder.
  • Designs featuring computed tomography (CT) reconstructions have shown particular success.

Conclusions:

  • CT imaging and 3D printing are effective tools for designing and manufacturing custom attachments.
  • These technologies facilitate the creation of assistive devices tailored to individual needs.
  • Custom prosthetic attachments significantly improve the quality of life for wounded warriors.