This study showed that HE and CW do not differ significantly in terms of the number of usability problems identified, but they differ based on the severity of problems and the coverage of some usability attributes. The results suggest that CW would be the preferred method for evaluating systems intended for novice users and HE for users who have experience with similar systems. However, more studies are needed to support this finding.

This study showed that applying the proposed approach to augment TA with the user's perspective addresses almost all of the theoretical aspects of usability and can be employed to select the most usable PACS.

Background: Multiple sclerosis (MS) is a progressive disease of the central nervous system that has negative impacts on the quality of the patient's life. This disease is one of the most chronic disabling neurological diseases in young adults. The progress of this disease is unique and unpredictable. Self-care is one of the processes, which is used to control and prevent the progression of the disease. Some technologies such as mobile health can be used in improving monitoring as well as self-care in MS patients. Success in using this technology requires acceptance and readiness of the patients. Objectives: The aim of this study was to evaluate the readiness of MS patients using mobile health technology. Methods: This is a cross-sectional descriptive study that was conducted in 2016. Participants were MS patients who were referring to the MS clinic in Kerman city. We used convenient sampling method to recruit patients referred to the MS clinic during the study period. Data collection tool for this study was a questionnaire, which its validity was confirmed by 3experts in the fields of medical informatics and health information technology; its reliability coefficient was calculated 73%. Results: In total, 47 patients participated in the study. More than 55% of them had an academic degree. More than 57% of the patients had not heard about mobile health technology yet. More than 98% of patients stated that if the technology is free for them they are interested in using it. In addition, the same percentage of patients were feeling comfortable in terms of controlling their health situation by physicians or nurses via mobile phone. Also, more than 93% of these patients believed that the use of this technology can participate in effective communication with their physician. About 96% of patients agreed that the use of this technology can help them recall their medical orders. Conclusions: According to the results, patients were interested and have the adequate readiness to use mobile health technology. This technology can improve the self-care of MS patients through effective communication between patients and health care providers. Furthermore, this technology can help patients recall their physicians' advices and orders and therefore increase their adherence.

Summary Background Picture Archiving and Communication System (PACS) is an evolving technology in health care domains that is used for storage, management, retrieval, transfer, and delivery of medical images. Some medical centers in Iran have installed the PACS in recent years but have not used it appropriately. One of the problems in implementing this system is inability to select appropriate PACS. Several factors are involved in the selection process. The objective of this study was to determine the factors that influence PACS selection. Methods This qualitative study aimed to identify factors influencing the PACS selection. Data were collected through semistructured interviews with 10 experts in three educational hospitals and in the position to make decision for the purchase of PACS. Data were analyzed by the conventional qualitative content analysis method proposed by Lundman and Graneheim. Results Analyses achieved 11 subcategories in two specific and general categories that influence PACS selection. The specific category of this study included six subcategories, and the general category included five subcategories. Conclusion The results of this study determined that usability was the most important factor from the perspective of participants. Since the main users of a system have a critical role in adoption or rejection of a system, ease of use (usability) is significant and must be considered in system selection as a significant factor.