Abstract：
OBJECTIVES:To provide a comprehensive bottom-up categorization of model-based segmentation techniques that allows to select, implement, and apply well-suited active contour models for segmentation of medical images, where major challenges are the high variability in shape and appearance of objects, noise, artifacts, partial occlusions of objects, and the required reliability and correctness of results. METHODS:We consider the general purpose of segmentation, the dimension of images, the object representation within the model, image and contour influences, as well as the solution and the parameter selection of the model. Potentials and limits are characterized for all instances in each category providing essential information for the application of active contours to various purposes in medical image processing. Based on prolops surgery planning, we exemplify the use of the scheme to successfully design robust 3D-segmentation. RESULTS:The construction scheme allows to design robust segmentation methods, which, in particular, should avoid any gaps of dimension. Such gaps result from different image domains and value ranges with respect to the applied model domain and the dimension of relevant subsets for image influences, respectively. CONCLUSIONS:A general segmentation procedure with sufficient robustness for medical applications is still missing. It is shown that in almost every category, novel techniques are available to improve the initial snake model, which was introduced in 1987.
journal_name
Methods Inf Medjournal_title
Methods of information in medicineauthors
Lehmann TM,Bredno J,Spitzer Kkeywords:
subject
Has Abstractpub_date
2003-01-01 00:00:00pages
89-98issue
1eissn
0026-1270issn
2511-705Xpii
03010089journal_volume
42pub_type
杂志文章abstract：:Three ways are proposed to help the occupational physician in constructing a worker's job history or Curriculum Laboris (CL) with a PC. The quality and, therefore, the usefulness of any job history is greatly conditioned by the method and quality of data collection. The Curriculum Laboris method explained in a previou...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1990-03-01 00:00:00
abstract：:A non-parametric method is presented for modelling nonlinear dynamic mechanisms of respiratory sinus arrhythmia (RSA) in anesthesia caused by positive pressure ventilation. RR interval sequences are shown with Tsay's linearity test to contain both short-term and long-term nonlinear components, which cannot completely ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
abstract：:This paper tries to compare six Health Informatics/Medical Informatics (HI/MI) programs by a number of attributes in standardized form. The different programs and their curricula were summarized at the 5th IMIA Working Conference on HI/MI Education at Heidelberg/Heilbronn. The presentation is condensed to a synoptical...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
abstract：:During the last decade there has been a wealth of papers discussing the development of scoring systems in medicine, some of which have led to fully operational computer-aided diagnostic systems. In this paper we sketch the development of a simple scoring system for one of the more common rheumatic diseases, rheumatoid...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:Tumor documentation is an important task for both clinical research and patient care. Documentation systems for these purposes have to be planned systematically and should be goal oriented. We applied the method of a so-called 'standardized documentation protocol' for systematically planning two documentation systems ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2001-05-01 00:00:00
abstract：BACKGROUND:Interim analyses are used in clinical trials in order to enable early decisions for medical, ethical, and economic reasons. However, it appears unfeasible to stop a trial during such an interim analysis. New patients will thus enter the trial while the interim analysis is ongoing. Moreover, depending on the ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME14-02-0023
更新日期：2015-01-01 00:00:00
abstract：:Acute appendicitis is the most common cause of acute abdomen requiring surgical intervention. The clinical diagnosis of acute appendicitis is not always easy due to variable symptomatology, particularly at the onset. The contributions of history-taking and physical examination in the diagnosis of acute appendicitis wa...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-05-01 00:00:00
abstract：INTRODUCTION:This article is part of the Focus Theme of METHODS of Information in Medicine on "Managing Interoperability and Complexity in Health Systems". BACKGROUND:The need for complementary access to multiple RDF databases has fostered new lines of research, but also entailed new challenges due to data representat...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME13-02-0020
更新日期：2015-01-01 00:00:00
abstract：:A one-hundred percent documentation rate of diagnoses and patient data is unfeasible and should not be pursued. Therefore, a "lean documentation" of diagnoses and basic patient data was introduced. Coding is done by a clinic-specific list of diagnoses (thesaurus) with a minimum of diagnostic codes, combined with optio...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1997-08-01 00:00:00
abstract：OBJECTIVES:Our objective was to design and develop a mobile clinical decision support system for emergency triage of different acute pain presentations. The system should interact with existing hospital information systems, run on mobile computing devices (handheld computers) and be suitable for operation in weak-conne...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：OBJECTIVES:Today's socio-economic developments in the healthcare area require continued optimization of processes and cost structures at hospitals, often associated with process changes for different occupational groups in the hospital. Formal methods for managing change have been established in other industries. The g...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME9235
更新日期：2009-01-01 00:00:00
abstract：INTRODUCTION:This article is part of the Focus Theme of Methods of Information in Medicine on "Big Data and Analytics in Healthcare". BACKGROUND:Hospital readmissions raise healthcare costs and cause significant distress to providers and patients. It is, therefore, of great interest to healthcare organizations to pred...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME14-02-0017
更新日期：2015-01-01 00:00:00
abstract：:The medical information systems of the future will probably include the entire medical record as well as a knowledge base, providing decision support for the physician during patient care. Data dictionaries will play an important role in integrating the medical knowledge bases with the clinical databases. This article...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1989-04-01 00:00:00
abstract：BACKGROUND:Each year, the International Medical Informatics Association Yearbook recognizes significant scientific papers, labelled as "best papers", published the previous year in the subfields of biomedical informatics that correspond to the different section topics of the journal. For each section, about fifteen pre...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME14-01-0031
更新日期：2015-01-01 00:00:00
abstract：OBJECTIVES:Lifestyle has a major influence on the development and progression of atherosclerosis. Our motto for healthy habits is "give up one, reduce two, and increase three". The one thing that is to be given up is smoking. The two things that are to be reduced are intake of food and alcohol. The three things that ar...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:A Bayesian decision support system was developed for the diagnosis of rheumatic disorders. Knowledge in this system is represented as evidential weights of findings. Simple weights were calculated as the logarithm of likelihood ratios on the basis of 1,000 consecutive patients from a rheumatological clinic. The effect...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1991-08-01 00:00:00
abstract：:Continuous recording of intraluminal pressures for extended periods of time is currently regarded as a valuable method for detection of esophageal motor abnormalities. A subsequent automatic analysis of the resulting motility data relies on strict mathematical criteria for recognition of pressure events. Due to great ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
abstract：:A few years ago, a new method of survival analysis, denoted period analysis, has been developed to derive more up-to-date estimates of long-term survival rates of cancer patients, but this method has rarely been applied so far. Using empirical examples from the Saarland Cancer Registry, we illustrate how seriously tra...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2001-07-01 00:00:00
abstract：OBJECTIVE:To explain the common conformance and interoperability testing requirements of eHealth applications through two case studies; one using a prominent eHealth messaging standard, namely HL7 v3 [1], and the other using Integrating the Healthcare Enterprise (IHE) [2] Profiles and to describe how these testing requ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：10.3414/ME09-02-0022
更新日期：2010-01-01 00:00:00
abstract：:Requirements and approaches of Software Engineering education in the field of Medical Informatics are described with respect to the impact of (1) experiences characterizing the "software misery", (2) status and tendencies in software methodology, and (3) educational status and needs in computer science education influ...
journal_title：Methods of information in medicine
pub_type： 杂志文章,评审
doi：
更新日期：1989-11-01 00:00:00
abstract：:Artificial neural networks (ANNs) are compared to standard statistical methods for outcome prediction in biomedical problems. A general method for using genetic algorithms to "evolve" ANN architecture (EANN) is presented. Accuracy of logistic regression, a fully interconnected ANN, and an EANN for predicting depressio...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1998-09-01 00:00:00
abstract：OBJECTIVES:The objective of this study was to explore suitable spatial filters for inverse estimation of cortical potentials from the scalp electroencephalogram. The effect of incorporating noise covariance into inverse procedures was examined by computer simulations and tested in human experiment. METHODS:The paramet...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：OBJECTIVES:To discuss application areas of information technology in medicine and health care on the occasion of the opening of the Private Universität für Medizinische Informatik und Technik Tirol/University for Health Informatics and Technology Tyrol (UMIT) at Innsbruck, Tyrol, Austria. RESULTS AND CONCLUSIONS:Impor...
journal_title：Methods of information in medicine
pub_type：
doi：
更新日期：2002-01-01 00:00:00
abstract：OBJECTIVE:The aim of this paper is twofold. First, we describe two important dimensions of patient care information systems (PCIS) evaluation: the domain of evaluation and the different phases of the PCIS implementation. Second, we claim that, though Randomized Controlled Trials (RCTs) are often still seen as the stand...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:The graduates and students of the School of Health Information Science (HIS) at the University of Victoria (UVic) have pioneered the Canadian sphere in health informatics since 1982. After six years of growth this co-operative education program has matured and establishment of a research base and graduate school has b...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1989-11-01 00:00:00
abstract：OBJECTIVES:The main objective of the research is an application of the clustering and cluster validity methods to estimate the number of clusters in cancer tumor datasets. A weighed voting technique is going to be used to improve the prediction of the number of clusters based on different data mining techniques. These ...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:HEALTH WATCH, a longitudinal prospective study of healthy aging, was designed to characterize a healthy population of 2,200 men and women, ages 20-80 years in 1970. Biochemical, hematological, and physiological tests are performed annually over three weekly visits, combined with a self-administered HEALTH WATCH questi...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1993-04-01 00:00:00
abstract：OBJECTIVES:According to results from the epidemiological literature, it can be expected that the prevalence odds ratio (POR) and the prevalence ratio (PR) differ with increasing disease prevalence. We illustrate different concepts to calculate these effect measures in cross-sectional studies and discuss their advantage...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：OBJECTIVES:EEG scalp potential distributions recorded in humans are affected by low spatial resolution and by the dependence on the electrical reference used. High resolution EEG technologies are available to drastically increase the spatial resolution of the raw EEG. Such technologies include the computation of surfac...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:Although arterial mechanical properties have been evaluated using arterial input impedance, the relative difficulty in accurate flow measurement made the value of impedance somewhat limited. To develop an alternative method to evaluate arterial mechanical properties, we analyzed the aortic pressure (AoP)-radial arteri...
journal_title：Methods of information in medicine
pub_type： 杂志文章
doi：
更新日期：1997-12-01 00:00:00
