by Kauppinen, Tomi; Koivikko, Mika P.; Ahovuo, Juhani

DOI: 10.1007/s10278-008-9143-y
Online Date: 8/2/2008
Print publication date: 12/1/2008
View article on SpringerLink

by Hemminger, Bradley M.; Bauers, Anne; Yang, Jian

Medical images are examined on computer screens in a variety of contexts. Frequently, these images are larger than computer screens, and computer applications support different paradigms for user navigation of large images. The paper reports on a systematic investigation of what interaction techniques are the most effective for navigating images larger than the screen size for the purpose of detecting small image features. An experiment compares five different types of geometrically zoomable interaction techniques, each at two speeds (fast and slow update rates) for the task of finding a known feature in the image. There were statistically significant performance differences between several groupings of the techniques. The fast versions of …

Steve Horii MD (left) inducted Elizabeth Krupinski PhD, Bradley Erickson MD, PhD, and Richard Morin, PhD (from left to right respectively above) into the College of SIIM Fellows.  Each of these new fellows have shown leadership in their individual fields and continued outstanding service to SIIM as well as to the scholarly community.  We congratulate them on being awarded this honor and thank them sincerely for their continued service and devotion to our community.

This was one of the fun and casual events at SIIM 2008.  Developers of Open Source applications were invited to show their work in a casual round table environment.  Most handed out installations instructions and showed potential users how to make the best use of their software.  I’ve included a list of the developers who attended below and their web sites for those who could not attend the sessions.

The Extensible Neuroimaging Archive Toolkit (XNAT) is an open source software platform designed to facilitate management and exploration of neuroimaging and related data. XNAT includes a secure database backend and a rich web-based user interface.www.xnat.org

ClearCanvas is a company devoted to creating innovative open source healthcare IT …

In 2007, SIIM awarded two Research Grants.  This morning, both researchers presented their results to the members.

John Kornak, PhD, University of California, San Francisco (on the left in the picture above) presented “Improved Statistical Reconstruction of Low Resolution Physiological and Molecular MRI Modalities”  in which he showed that by using a K-Bayes Model, he could map low resolution K-space data to a high resolution structural image with more accuracy than by useing previously described methods.  We will be watching for his articles on this methodology and research in JDI in the coming months.

Chris Sistrom, M.D., MPH., University of Florida Health Center, (on the right in the picture above) presented “Systematic Nomenclature for Imaging …

As usual, the stage for the SIIM Opening session was set for a successful annual meeting.   Curtis Langlotz, M.D., the Chairman of SIIM opened the 2008 Annual Meeting in Seattle to a full house.  Bradley Erickson, M.D., the Program Committee Chair and Chair-Elect of SIIM followed with a road map of the exciting sessions assembled for all.  He then introduced Ronald Arenson, M.D., a founder of Imaging Informatics and a true pioneer in our field to deliver our keynote address.   Dr. Langlotz (left) and Dr. Arenson (right) are shown in the picture above prior to the …

by Prasad, Mithun; Sowmya, Arcot; Wilson, Peter

Bronchiectasis is an airway disease caused by the dilatation of the bronchial tree, and a bronchovascular pair is formed between a bronchus and a vessel. An abnormal bronchovascular pair is one that has a larger bronchus compared to its accompanying vessel. Typically, bronchi and vessels running perpendicular to the plane of section appear as near-circular rings on computed tomography (CT) scans. This paper describes BV_pairs, a system capable of detecting abnormal bronchovascular pairs in high-resolution CT scans of sparse datasets using a three-stage process: (1) detection of potential bronchovascular pairs, (2) detection of discrete pairs, where there exists no ambiguity as to the artery that accompanies a bronchus, and (3) identification …

by Kahn, Charles E.

Integrating relevant images into web-based information resources adds value for research and education. This work sought to evaluate the feasibility of using “Web 2.0” technologies to dynamically retrieve and integrate pertinent images into a radiology web site. An online radiology reference of 1,178 textual web documents was selected as the set of target documents. The ARRS GoldMiner™ image search engine, which incorporated 176,386 images from 228 peer-reviewed journals, retrieved images on demand and integrated them into the documents. At least one image was retrieved in real-time for display as an “inline” image gallery for 87% of the web documents. Each thumbnail image was linked to the full-size image at its original web site. Review …

by Koivikko, Mika P.; Kauppinen, Tomi; Ahovuo, Juhani

Speech recognition (SR), available since the 1980s, has only recently become sufficiently reliable to allow utilization in medical environment. This study measured the effect of SR for the radiological dictation process and estimated differences in report turnaround times (RTTs). During the transition from cassette-based reporting to SR, the workflow of 14 radiologists was periodically followed up for 2 years in a university hospital. The sample size was more than 20,000 examinations, and the radiologists were the same throughout the study. A RTT was defined as the time from imaging at the modality to the time when the report was available for the clinician. SR cut down RTTs by 81% and the …