Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Computed Tomography01:10

Computed Tomography

7.0K
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...
7.0K
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

190
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
190
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

88
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...
88
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

96
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...
96
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

488
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
488

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

PRELIMINARY INVESTIGATION OF RADIATION DOSE TO PATIENTS FROM CARDIOVASCULAR INTERVENTIONAL PROCEDURES IN TANZANIA.

Radiation protection dosimetry·2018
Same author

Survey of Effective Doses to Patients Undergoing Contrast-Based X-ray Fluoroscopy Procedures in Tanzania.

Radiation protection dosimetry·2016
Same author

Initial Investigation of Factors Influencing Radiation Dose to Patients Undergoing Barium-Based Fluoroscopy Procedures in Tanzania.

Radiation protection dosimetry·2016
Same author

Assessment of patient dose and optimization levels in chest and abdomen CR examinations at referral hospitals in Tanzania.

Journal of applied clinical medical physics·2015
Same author

Occupational radiation exposure in Tanzania (1996-2010): status and trends.

Radiation protection dosimetry·2012
Same author

Paediatric CT examinations in 19 developing countries: frequency and radiation dose.

Radiation protection dosimetry·2010

Related Experiment Video

Updated: Oct 14, 2025

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner
08:36

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner

Published on: June 7, 2024

436

ESTIMATION OF PATIENT RADIATION DOSES FROM MULTI-DETECTOR COMPUTED TOMOGRAPHY ANGIOGRAPHY PROCEDURES IN TANZANIA.

J E Ngaile1,2, P K Msaki2, S A Suleiman1

  • 1Radiation Control Directorate, Tanzania Atomic Energy Commission, P O Box 743 Arusha, Tanzania.

Radiation Protection Dosimetry
|November 3, 2021
PubMed
Summary
This summary is machine-generated.

Patient radiation doses from multi-detector computed tomography angiography (MDCTA) in Tanzania were higher than international benchmarks. Standardizing scanning protocols is crucial to optimize patient dose and ensure safety in these common imaging procedures.

More Related Videos

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
09:32

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Published on: December 9, 2021

3.1K
Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
07:57

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

2.9K

Related Experiment Videos

Last Updated: Oct 14, 2025

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner
08:36

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner

Published on: June 7, 2024

436
Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
09:32

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Published on: December 9, 2021

3.1K
Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
07:57

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

2.9K

Area of Science:

  • Medical Physics
  • Radiology
  • Public Health

Background:

  • Multi-detector computed tomography angiography (MDCTA) is widely used for diagnosing vascular diseases.
  • Accurate estimation and comparison of patient radiation doses are essential for quality assurance and patient safety.
  • Limited data exists on MDCTA radiation doses in African medical institutions.

Purpose of the Study:

  • To estimate radiation doses (CTDIvol, DLP, ED) for five common MDCTA procedures in Tanzania.
  • To compare these doses with international literature values and established diagnostic reference levels.
  • To identify variations in scanning protocols and patient doses across Tanzanian medical centers.

Main Methods:

  • Radiation doses were estimated for 217 patients undergoing brain, carotid, coronary, entire aorta, and lower limb MDCTA.
  • Data included patient demographics, exposure parameters, and examination geometry.
  • CT-Expo V 2.4 Monte Carlo-based software was used for dose estimation.

Main Results:

  • Median effective doses ranged from 5.2 mSv (brain) to 41.1 mSv (entire aorta).
  • Mean doses in this study were generally higher than those reported in Kenya, Korea, and Saudi Arabia.
  • Significant variations in patient doses (up to 41.4-fold) were observed within and across institutions.

Conclusions:

  • Tanzanian MDCTA procedures result in higher patient radiation doses compared to international data.
  • Observed dose variations highlight the need for standardized scanning protocols.
  • Optimizing MDCTA protocols is necessary to reduce patient exposure and ensure radiation safety.