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.

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.

Merits of usability testing for PACS selection.

Objectives: To compare the usability of different Picture Archiving and Communication System (PACS) workstations, determine whether a usability test has added value with respect to the traditional way of comparing PACSs based on functional requirements, and to evaluate the appropriateness of a task-based methodology for a PACS usability test.

Methods: A task-based usability test of four PACS workstations was performed. Radiologists' subjective responses to the PACSs and their performance on the tasks were measured.

Detecting relevant changes and responsiveness of Neck Pain and Disability Scale and Neck Disability Index.

Purpose: To investigate relevant change on the Neck Pain and Disability Scale (NPAD) and Neck Disability Index (NDI) and which questionnaire is the most responsive in patients with non-specific chronic neck pain (CNP).

Methods: Seventy-six patients with non-specific CNP in an outpatient tertiary rehabilitation setting were dichotomized into "improved" and "stable" based on global perceived effect (GPE) scores. To investigate relevant change minimal detectable change (MDC) and minimal important change (MIC) with the receiver operator characteristic (ROC) cut-off point were assessed.

Neck Pain and Disability Scale and Neck Disability Index: validity of Dutch language versions.

Purpose: To investigate the validity of the Neck Pain and Disability Scale Dutch Language Version (NPAD-DLV) and the Neck Disability Index (NDI)-DLV.

Methods: NPAD-DLV, NDI-DLV, Short-Form-36 Health Survey (SF-36)-DLV, visual analog scale (VAS)(pain) and VAS(disability) were administered to 112 patients with non-specific chronic neck pain in an outpatient tertiary rehabilitation setting. Twenty seven hypotheses were formulated regarding validity.

Neck Pain and Disability Scale and the Neck Disability Index: reproducibility of the Dutch Language Versions.

The first aim of this study was to translate the Neck Pain and Disability Scale (NPAD) from English into Dutch producing the NPAD-Dutch Language Version (DLV). The second aim was to analyze test-retest reliability and agreement of the NPAD-DLV and the Neck Disability Index (NDI)-DLV. The NPAD was translated according to established guidelines.

Responsiveness of the Roland-Morris Disability Questionnaire: consequences of using different external criteria.

Objective: To determine the consequences of using different external criteria on responsiveness of the Roland-Morris Disability Questionnaire (RMDQ) in patients with chronic low back pain.

Design: Questionnaire measures before and after rehabilitation treatment.

Setting: Rehabilitation centre.