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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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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Cone Beam Intraoperative Computed Tomography-based Image Guidance for Minimally Invasive Transforaminal Interbody Fusion
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Pedicle screw insertion: computed tomography versus fluoroscopic image guidance.

Tsai-Sheng Fu1, Chak-Bor Wong, Tsung-Ting Tsai

  • 1Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Chang Gung University, 5, Fu-Hsing St. 333, Kweishan, Taoyuan, Taiwan.

International Orthopaedics
|April 6, 2007
PubMed
Summary

Fluoroscopy-guided surgery (FGS) and computed tomography-guided surgery (CTGS) both offer high accuracy for pedicle screw placement. FGS may be preferred for lower thoracic and lumbosacral spine procedures due to real-time navigation.

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Area of Science:

  • Spinal surgery
  • Medical imaging
  • Orthopedic surgery

Background:

  • Computed tomography-guided surgery (CTGS) enhances pedicle screw insertion accuracy.
  • Fluoroscopy-guided system (FGS) is reported to offer high accuracy and ease of use.
  • Clinical superiority between CTGS and FGS for pedicle screw placement remains unclear.

Purpose of the Study:

  • To compare the accuracy of pedicle screws inserted using CTGS versus FGS.
  • To evaluate the clinical applicability of both image-guided systems in spinal surgery.

Main Methods:

  • Retrospective comparison of 74 pedicle screws placed with FGS in 13 patients and 76 screws with CTGS in 11 patients.
  • Study population included various spinal conditions (vertebral fracture, spondylolisthesis, etc.) from T8 to S1 levels.
  • Postoperative radiographs and CT scans were used to assess screw placement accuracy.

Main Results:

  • Correct pedicle screw placement was achieved in 93.2% of FGS cases and 96.1% of CTGS cases (P=0.491).
  • Both CTGS and FGS demonstrated high accuracy in pedicle screw insertion.
  • No statistically significant difference in accuracy was found between the two methods.

Conclusions:

  • Both CTGS and FGS are highly accurate for pedicle screw placement.
  • FGS may be advantageous for lower thoracic and lumbosacral pedicle placement due to real-time navigation and avoidance of preoperative CT scans.
  • FGS can be considered a primary tool for specific spinal regions.