Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

The Concept of “Number Needed to Image”

The Concept of “Number Needed to Image” LETTERS n medicine, it is a common reaction for referring physicians to In fact, to have a cost-effective imaging assessment, physicians Iask for the less expensive imaging technique if the a priori should ask for the less expensive and less sensitive imaging test in suspicion of finding abnormalities is low. For example, in a the setting of a high clinical suspicion of abnormal findings. In case with a mild traumatic brain injury (MTBI) and low sus- this setting, the less sensitive test might be very cost-efficient and, picion of finding trauma-related brain abnormalities, the re- at the same time, will result in only a low rate of false-negative ferring physician oftentimes asks for the cheaper, yet less sen- imaging results. sitive, CT rather than the more expensive, but also more In medicine, the equivalent concept of number needed to 2,3 sensitive, MR imaging to detect, for example, diffuse axonal treat (NNT) is well established. Physicians treat patients (eg, injuries. This reaction is intuitively understandable, notably with antiaggregation or antihypertensive medication to pre- in times of increasing economic pressure. vent stroke) knowing that only 1 of n patients will actually However, when considering the situation in more depth, this benefit http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Neuroradiology American Journal of Neuroradiology

The Concept of “Number Needed to Image”

American Journal of Neuroradiology , Volume 38 (10) – Oct 1, 2017

Loading next page...
 
/lp/american-journal-of-neuroradiology/the-concept-of-number-needed-to-image-BudVjF2gHR
Publisher
American Journal of Neuroradiology
ISSN
0195-6108
eISSN
1936-959X
DOI
10.3174/ajnr.A5276
Publisher site
See Article on Publisher Site

Abstract

LETTERS n medicine, it is a common reaction for referring physicians to In fact, to have a cost-effective imaging assessment, physicians Iask for the less expensive imaging technique if the a priori should ask for the less expensive and less sensitive imaging test in suspicion of finding abnormalities is low. For example, in a the setting of a high clinical suspicion of abnormal findings. In case with a mild traumatic brain injury (MTBI) and low sus- this setting, the less sensitive test might be very cost-efficient and, picion of finding trauma-related brain abnormalities, the re- at the same time, will result in only a low rate of false-negative ferring physician oftentimes asks for the cheaper, yet less sen- imaging results. sitive, CT rather than the more expensive, but also more In medicine, the equivalent concept of number needed to 2,3 sensitive, MR imaging to detect, for example, diffuse axonal treat (NNT) is well established. Physicians treat patients (eg, injuries. This reaction is intuitively understandable, notably with antiaggregation or antihypertensive medication to pre- in times of increasing economic pressure. vent stroke) knowing that only 1 of n patients will actually However, when considering the situation in more depth, this benefit

Journal

American Journal of NeuroradiologyAmerican Journal of Neuroradiology

Published: Oct 1, 2017

There are no references for this article.