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 continuously improved upon by countless contributing members. Our dedicated editors oversee each edit for accuracy and style. Find out more about articles.
7 results found
Article
Akeret staging of neuroepithelial tumors
The Akeret or anatomical staging of neuroepithelial tumors adheres loosely to the general scheme underlying AJCC TNM staging. Like other cancer staging systems, it assists in estimating the individual prognosis, in tailoring patient-specific therapy and surveillance, and in improving the compara...
Article
Fisher scale
The Fisher scale is the initial and best-known system of classifying the amount of subarachnoid hemorrhage on CT scans, described in 1980 4. Its primary use was in predicting the occurrence and severity of cerebral vasospasm, highest in grade 3 2,4.
Usage
Although it is known as a scale, fro...
Article
iRANO criteria
The immunotherapy response assessment for neuro-oncology (iRANO) criteria have been developed as a modification of RANO criteria to address the challenges of emerging novel immunotherapy for high-grade gliomas 1. Although these criteria have been primarily for the purposes of standardizing asses...
Article
Levene index
The Levene index or ventricular index is a marker of ventricular size in infants. It is defined as the distance between the falx and the lateral wall of the anterior horn of the lateral ventricle in the coronal plane 1.
Usage
The Levene index is a marker of ventricular volume and thus can be...
Article
Modified Ringertz grading system for diffuse astrocytomas
The modified Ringertz grading system has historically been one of the more frequently used grading systems for diffuse astrocytomas, but has essentially been replaced by the WHO grading system.
Unlike the WHO grading system and St Anne-Mayo grading system (also known as the Dumas-Duport grading...
Article
Retinoblastoma (staging)
Retinoblastoma staging can be via a number of systems with various end-points and multiple systems are often used concurrently.
Staging
Reese Ellsworth classification
The Reese Ellsworth classification is assessed with fundoscopy and aims at predicting the chance of preserving the eye with ex...
Article
Rhabdomyosarcoma (staging)
Rhabdomyosarcoma staging is based on the Lawrence/Gehan staging system, which comprises of a combination of pretreatment staging and postoperative clinical grouping.
Stage
stage I: orbit, eyelid, head and neck (excluding parameningeal), genitourinary (non-bladder, non-prostate), N0 or 1, M0
s...
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