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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...
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

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A computed tomographic study of schizophrenia.

Siddharatha1, N Lal, S C Tewari

  • 1SIDDHARTHA, M.D., Psychiatrist, Department Psychiatry, KG Medical College , Lucknow-226003.

Indian Journal of Psychiatry
|May 18, 2011
PubMed
Summary
This summary is machine-generated.

This study found tomographic abnormalities in schizophrenic patients, especially those with negative and mixed symptoms. These brain imaging findings highlight differences between patients and healthy individuals.

Keywords:
SANSSAPSSchizophreniapositive and negative subtypesventricle brain ratio (VBR)width of sylvian fissure (WSF)width of third ventricle (WTF)

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Area of Science:

  • Neuroimaging
  • Psychiatry
  • Radiology

Background:

  • Schizophrenia is a complex psychiatric disorder.
  • Brain structure abnormalities are frequently observed in schizophrenia.
  • Understanding these abnormalities is crucial for diagnosis and treatment.

Purpose of the Study:

  • To compare brain imaging metrics between schizophrenic patients and healthy controls.
  • To investigate differences in brain structure among schizophrenia subtypes (positive, negative, mixed).

Main Methods:

  • Fifty patients diagnosed with schizophrenia (DSM-III-R) and matched healthy controls were recruited.
  • Ventricle-to-Brain Ratio (VBR), White Superficial Fraction (WSF), and White Transverse Fraction (WTF) were measured.
  • Schizophrenia subtypes were classified using the Scale for the Assessment of Positive Symptoms (SAPS) and the Scale for the Assessment of Negative Symptoms (SANS).

Main Results:

  • Schizophrenic patients exhibited tomographic abnormalities compared to controls.
  • Abnormalities were particularly pronounced in the negative and mixed symptom subtypes of schizophrenia.
  • Specific differences in VBR, WSF, and WTF were observed between patient subtypes and controls.

Conclusions:

  • Tomographic abnormalities are characteristic of schizophrenia, varying by symptom presentation.
  • Negative and mixed symptom subtypes show distinct neuroimaging patterns.
  • These findings contribute to understanding the neurobiology of schizophrenia subtypes.