Articles

Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.

13 results found
Article

Chest (AP erect view)

The erect anteroposterior chest view is performed with the x-ray tube anteriorly, firing photons through the patient to form the image on a detector positioned behind the patient. A detector can be positioned behind a relatively immobile patient. It is therefore an alternative to the PA view whe...
Article

Chest (AP lordotic view)

The AP lordotic chest radiograph (or AP axial chest radiograph) demonstrates areas of the lung apices that appear obscured on the PA/AP chest radiographic views. It is often used to evaluate suspicious areas within the lung apices that appeared obscured by overlying soft tissue, upper ribs or th...
Article

Chest (expiratory view)

An expiratory chest radiograph can be taken in either a PA or AP projection, and can also be taken with a mobile/portable unit. They are used to help detect small pneumothoraces (although sensitivity is not increased over inspiratory chest radiographs 1), and to assess for inhaled foreign bodies...
Article

Chest (lateral view)

The lateral chest view may be performed as an adjunct to a frontal chest radiograph in cases where there is diagnostic uncertainty. The lateral chest view examines the lungs, bony thoracic cavity, mediastinum, and great vessels. Lateral radiographs can be particularly useful in assessing the ret...
Article

Chest (PA view)

Posteroanterior (PA) chest view is the most common radiological investigation in the emergency department 1. The PA view examines the lungs, bony thoracic cavity, mediastinum and great vessels. The chest X-ray is frequently used to aid diagnosis of acute and chronic conditions.   Patient positi...
Article

Chest radiograph

The chest radiograph (CXR) is the most ubiquitous radiological investigation. Indications The chest radiograph is performed for a broad content of indications, including but not limited to 1-4: respiratory disease cardiac disease haemoptysis   suspected pulmonary embolism investigation of...
Article

Chest (supine view)

The supine anteroposterior chest view is the alternative to the PA view and the AP erect view when the patient is generally too unwell to tolerate standing leaving the bed, or sitting 1. The supine view examines the lungs, bony thoracic cavity mediastinum and great vessels. This particular ches...
Article

CT polytrauma (technique)

CT polytrauma/multitrauma, also called trauma CT, whole body CT (WBCT) or panscan, is an increasingly used investigation in patients with multiple injuries sustained after significant trauma. Clinical assessment and mechanism of injury may underestimate injury severity by 30% 8. There is some e...
Article

Normal chest imaging examples

This article lists examples of normal imaging of the chest and surrounding structures, divided by modality. Radiograph Adult examples chest radiograph PA adult male example 1 example 2: with inverted windows example 3 PA adult female example 1 example 2 example 3: with labels example...
Article

Sternum (lateral view)

The lateral sternum view a radiographic investigation of the entire length of the sternum in profile. The view is used to query fractures or infection 1. Patient position patient is erect with the left or right side of the thorax adjacent to the image receptor patient's hands are behind their...
Article

Triple-rule-out CT

Triple-rule-out CT (TRO CT) angiography may be ordered in the setting of acute chest pain to examine the thoracic aorta and the coronary and pulmonary arteries. The protocol helps exclude life-threatening causes of acute chest pain, especially if atypical, or if alternative causes to acute coron...
Article

V/Q scan

V/Q (ventilation/perfusion) scan is a scintigraphic examination of the lung that evaluates pulmonary vasculature perfusion and segmental bronchoalveolar tree ventilation. Indications diagnosis of suspected pulmonary embolism (PE) monitor pulmonary function following lung transplant provide p...
Article

Xenon-127

Xenon-127 is a radiopharmaceutical principally used when a performing VQ scan. It is an not widely used alternative to xenon-133 with the main advantage being a higher proton energy allowing for post perfusion scanning.  photon energy: 203 KeV physical half life: 36.3 days

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