Antonio Higor Freire de Morais

Computer-aided detection system for lung cancer in computed tomography scans: review and future prospects.

IntroductionThe goal of this paper is to present a critical review of major Computer-Aided Detection systems (CADe) for lung cancer in order to identify challenges for future research. CADe systems must meet the following requirements: improve the performance of radiologists providing high sensitivity in the diagnosis, a low number of false positives (FP), have high processing speed, present high level of automation, low cost (of implementation, training, support and maintenance), the ability to detect different types and shapes of nodules, and software security assurance.MethodsThe relevant literature related to “CADe for lung cancer” was obtained from PubMed, IEEEXplore and Science Direct database. Articles published from 2009 to 2013, and some articles previously published, were used. A systemic analysis was made on these articles and the results were summarized.DiscussionBased on literature search, it was observed that many if not all systems described in this survey have the potential to be important in clinical practice. However, no significant improvement was observed in sensitivity, number of false positives, level of automation and ability to detect different types and shapes of nodules in the studied period. Challenges were presented for future research.ConclusionsFurther research is needed to improve existing systems and propose new solutions. For this, we believe that collaborative efforts through the creation of open source software communities are necessary to develop a CADe system with all the requirements mentioned and with a short development cycle. In addition, future CADe systems should improve the level of automation, through integration with picture archiving and communication systems (PACS) and the electronic record of the patient, decrease the number of false positives, measure the evolution of tumors, evaluate the evolution of the oncological treatment, and its possible prognosis.

Hospital automation system RFID-based: Technology embedded in smart devices (cards, tags and bracelets)

RFID is a technology being adopted in many business fields, especially in the medical field. This work has the objective to present a system for automation of a hospital clinical analysis laboratory. This system initially uses contactless smart cards to store patients data and for authentication of hospital employees in the system. The proposed system also uses RFID tags stuck to containers containing patients collected samples for the correct identification of the patient who gave away the samples. This work depicts a hospital laboratory workflow, presents the system modeling and deals with security matters related to information stored in the smart cards.

Hospital automation RFID-based

RFID is a technology have been adopted in many business fields, especially in medical field. This work has the objective to present a system for automation of a hospital clinical analysis laboratory. This system initially uses contactless smart cards to store patientpsilas data and for authentication of hospital employees in the system. The proposed system also uses RFID tags stuck in each patientpsilas collected samples container for correct identification of the patient who gave away the samples. This work depicts a hospital laboratory workflow, presents the system modeling and deals with security matters related to information stored in the smart cards.

A performance analysis of the Ethernet nets for applications in real-time: IEEE 802.3 and 802.3 1 Q

Ethernet technology dominates the local net market of computers. However, it was not established as a technology for industrial automation, where the requirements demand determinism with a performance of real time. Many solutions have been proposed to solve the problem of the no determinism, which are based mainly on the TDMA (time division multiple access), token pass and master-slave. It is in this context that this paper carried through measures of performance on communication nets that use the standard IEEE 802.3, observing the behavior of these nets when submitted to different scenes of overload. For this, variations were adopted in the test environment, which will be based on Shared Ethernet (Hub), Switch Ethernet and Switch Ethernet with priority (IEEE 802.1Q). This way, being capable to indicate which devices analyzed among the performance tests demonstrated a more appropriate behavior to support the applications with the time requirements of real time.

MP-HA: Multicycles Protocol for Hospital Automation over multicast with IEEE 802.3

This paper presents a multicycles protocol for hospital automation (MP-HA) that works over multicast addressing and use a master-slave architecture. The protocol creates a segmented logical network based on multicast addressing associated to hospital beds. The objective of MP-HA is to ensure the determinism on network through medium access control mechanism increasing the transmission throughput. Thus, it creates a periodical environment making use of the parallel cycles which is called multicycles.

MP-HA: Multicycles protocol for hospital automation over multicast addressing

This paper presents a Multicycles Protocol for Hospital Automation (MP-HA) that works over multicast addressing and uses a Master-Slave architecture. The protocol creates a segmented logical network based on multicast addressing associated to hospital beds. The objective of MP-HA is to ensure the determinism on network through medium access control mechanism increasing the transmission throughput. Thus, it creates a periodical environment making use of parallel cycles which is called multicycles.