+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

New attempt of ultrasonic tissue characterization: Decreased chaos in myocardial echo in patients with dilated cardiomyopathy

, : New attempt of ultrasonic tissue characterization: Decreased chaos in myocardial echo in patients with dilated cardiomyopathy. Ultrasound in Medicine & Biology 28(1): 93-99, January

Ultrasonic radiofrequency (RF) signals returned from the myocardium may display complex behavior, including deterministic chaos, and such chaos may be a useful marker of the tissue properties that are not obtainable with myocardial integrated backscatter. Thus, RF signals were obtained from the myocardium by the transthoracic approach in seven healthy subjects and eight patients with dilated cardiomyopathy (DCM). They were analyzed by a time-delay embedding technique to construct a continuous 3-D trajectory. The attractor formed a thick ring-like structure consisting of a relatively empty, roughly circular, core region in all healthy subjects. In DCM patients, the ring-like structure is thinned with a distinct empty circular core region. When the relation between embedding dimension and averaged correlation dimension was compared, the correlation dimension reached a plateau at the value of 3.5 in healthy subjects, and at the value of 2.6 in DCM patients. In conclusion, chaotic behavior is prevalent in the RF signals for the healthy myocardium, and a decrease in such chaos may be indicative of the damaged myocardium in DCM patients.


PMID: 11879956

DOI: 10.1016/s0301-5629(01)00496-3

Other references

Grouet, Denise, 1962: Contribution to the study of Entvloma dahliae. The confusion concerning the role attributed to various vegetative forms of the fungus and the observation of a form of spores not yet described on E. dahliae led to a study of the various vegetative phases of the parasitic life of the fungus and...

Yasuda, I.; Yasuda, M.; Sumida, H.; Tsusaki, H.; Arima, A.; Ihara, T.; Kubota, S.; Asaoka, K.; Tsuga, K.; Akagawa, Y., 2005: In utero and lactational exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) affects tooth development in rhesus monkeys. We thought to validate the current tolerable daily intake (TDI) value for dioxin (4 pg/kg) in Japan. Pregnant rhesus monkeys received an initial dose of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD; 0, 30, or 300 ng/kg subcutaneously) on day 20 of ge...

Chubak, J.; Onega, T.; Zhu, W.; Buist, D.S.M.; Hubbard, R.A., 2017: An Electronic Health Record-based Algorithm to Ascertain the Date of Second Breast Cancer Events. Label="OBJECTIVES">Studies of cancer recurrences and second primary tumors require information on outcome dates. Little is known about how well electronic health record-based algorithms can identify dates or how errors in dates can bi...

Hubel, T.; Kesel, A.B.; Nachtigall, W., 2000: Influence of the rear edge geometry on the aerodynamic performance of biological wing surfaces Einfluss der Hinterkantengeometrie auf die aerodynamische Performance biologischer Tragflaechen. Biona Report, 14: 174-176

Teeter, M.G.; Goyal, P.; Yuan, X.; Howard, J.L.; Lanting, B.A., 2017: Change in Acetabular Cup Orientation From Supine to Standing Position and Its Effect on Wear of Highly Crosslinked Polyethylene. The purpose of this study is to measure acetabular cup position and wear of the highly crosslinked polyethylene liner in the supine and standing position for patients at a minimum of 10 years after the operation. A total of 38 patients were recrui...

Pirard, B.; Pickett, S.D., 2000: Classification of kinase inhibitors using BCUT descriptors. BCUTs are an interesting class of molecular descriptor which have been proposed for a number of design and QSAR type tasks. It is important to understand what kind of information any particular descriptor encodes and to be able to relate this to t...

Kogarko L.N.; Kramm U.; Grauert B., 1983: New data on age and genesis of alkaline rocks of Lovozero Massif; Rb and Sr isotopes. Doklady Akademii Nauk SSSR 268(4): 970-972

Bonchek, L.I., 1992: Technical considerations for coronary artery bypass without cardioplegia. Coronary artery bypass without cardioplegia remains the preferred technique at many centers around the world. This report describes in detail a technique that emphasizes intermittent cross-clamping of the aorta at mild hypothermia (30 degrees C)....

Strasberg, P., M.; Noreau, D.; Mcglynn-Steele, L.; Koultchitski, G.; Ray, P., N., 1997: PCR-based test for two cystic fibrosis mutations (A455E, 711+1 G fwdarw T) common among French Canadians. Clinical Chemistry 43(6 PART 1): 1083-1084

Joly, J.P.; Bower, S.M.; Meyer, G.R., 2001: A simple technique to concentrate the protozoan Mikrocytos mackini, causative agent of Denman Island Disease in oysters. This report describes a simple filtration technique to isolate the parasite Mikrocytos mackini from oyster tissue. The technique is based on successive filtration through filter papers and polycarbonate membrane filters of decreasing mesh using a...