Related Experiment Video
Updated: Sep 7, 2025

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
Retrospective audit of CT scans performed at a hospital for surgical patients
Yousaf Tanveer1, Farah Ahmed1,2, Asadullah Aslam3
1Cavan General Hospital, Ireland.
Introduction:
Easy accessibility, high sensitivity and specificity of CT scans have markedly increased its usage in developed countries. Its importance is undeniably considered integral for the diagnosis of various pathologies. However, sometimes this costly resource is wasted when used unnecessary. This paper is an audit on CT scans performed to look for surgical pathologies between July 2018 and April 2019 recapitulating the numbers of CT scan's abnormal and normal findings.
Methodology:
Anonymized record of all the patients seen by the surgical team in the emergency department was reviewed. Retrospective data of every patient who had the CT scan was taken through Mckesson Radiology software of an Irish Hospital. Analysis was done using SPSS. Findings of 102 CT scans was broken down in to three different groups depending at which departmental level CT was performed, namely:Emergency department, Inpatient and Outpatient.
Results:
102 CT Scans were performed of which 51 (50%) patients out of all the three groups had unremarkable.
Conclusions:
Adequate history, proper clinical examination and strong clinical knowledge may bring down the number of unnecessary CT scans.
Related Concept Videos
Imaging Studies III: Computed Tomography
Computed Tomography
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...
Radiological Investigation I: X-ray and CT
Imaging Studies I: CT and MRI
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 for Cardiovascular System V: CT
Radiological Investigation II: MRI and Ventilation Perfusion Scan
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...

