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.

6 results found
Article

Cardiac MRI

Cardiac MRI consists of using MRI to study heart anatomy and pathology. Advantages Main advantages of cardiac MRI in comparison with other techniques are: a better definition of soft tissues use of different types of sequences improves diagnostic accuracy avoid ionising radiation neverthel...
Article

Maximum intensity projection (MIP)

Maximum Intensity Projection (MIP) consists of projecting the voxel with the highest attenuation value on every view throughout the volume onto a 2D image 1. Such an algorithm is rather simple: for each XY coordinate, only the pixel with the highest Hounsfield number along the Z-axis is represe...
Article

Minimum intensity projection (MinIP)

Minimum intensity projection (MinIP) is a data visualization method that enables detection of low-density structures in a given volume. The algorithm uses all the data in a volume of interest to generate a single bidimensional image, in other words, its consists of projecting the voxel with the ...
Article

Octreoscan

An octreoscan is a scinitigraphic study that uses 111In labelled octreotide which is a somatostatin analog. It is particularly useful for assessment of neuroendocrine tumours. Examples include: carcinoid tumour paraganglioma(s) glomus jugulare tumour glomus jugulotympanicum glomus vagale ...
Article

Standard uptake value

The standard uptake value (SUV)  is a simple way of determining activity in PET imaging, most commonly used in Flourodeoxyglucose (FDG) imaging. It is also known as the dose uptake ratio (DUR). As the name suggests it is a mathematically derived ratio of tissue radioactivity concentration at a 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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