Post-deployment usability evaluation of a radiology workstation.

Objectives: To determine the number, nature and severity of usability issues radiologists encounter while using a commercially available radiology workstation in clinical practice, and to assess how well the results of a pre-deployment usability evaluation of this workstation generalize to clinical practice.

Methods: The usability evaluation consisted of semi-structured interviews and observations of twelve users using the workstation during their daily work. Usability issues and positive usability findings were documented.

Pattern mining of user interaction logs for a post-deployment usability evaluation of a radiology PACS client.

Objectives: To perform a post-deployment usability evaluation of a radiology Picture Archiving and Communication System (PACS) client based on pattern mining of user interaction log data, and to assess the usefulness of this approach compared to a field study.

Methods: All user actions performed on the PACS client were logged for four months. A data mining technique called closed sequential pattern mining was used to automatically extract frequently occurring interaction patterns from the log data.

The construct validity of the Short Form-36 Health Survey for patients with nonspecific chronic neck pain.

Self-reported disability related to neck pain can be measured using general health questionnaires. The validity of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) in patients with nonspecific chronic neck pain (CNP) in a tertiary outpatient rehabilitation setting is unknown. This study investigates construct validity of the SF-36 in these patients using 16 a-priori formulated hypotheses.

Improving the radiologist-CAD interaction: designing for appropriate trust.

Computer-aided diagnosis (CAD) has great potential to improve radiologists' diagnostic performance. However, the reported performance of the radiologist-CAD team is lower than what might be expected based on the performance of the radiologist and the CAD system in isolation. This indicates that the interaction between radiologists and the CAD system is not optimal.

Physical dysfunction and nonorganic signs in patients with chronic neck pain: exploratory study into interobserver reliability and construct validity.

Study Design: Repeated-measurement design.

Objectives: To explore interobserver reliability of the modified physical dysfunction severity (mPDS) as a measure for impairment of the cervical spine and the modified cervical nonorganic signs (mcNOS) as a measure for behavioral signs, and to explore construct validity of the mPDS and mcNOS.

Background: The PDS has been used for evaluation of treatment efficacy in controlled trials in primary care.