The study was carried out on 35 subjects diagnosed definitely as Basedow by clinical symptoms and T3, T4, TSH reactions. The controlled group composes of 15 healthy persons. Results showed that the rate of females is more than males. Some functional indicators of the left ventricle, Co, EF% were higher than those of control, the volume of systolic blow decreased (p<0.05) due to the intoxication by thyroid hormone level and the volume of left ventrical and the negative correlation between the duration of disease and the blood expelling power of the left ventricle
Graves Disease ; Heart ; patients ; heart ; Ultrasonography ; anatomy & histology

The exact scales of volume and density of human internal organs were measured synchronously with the intelligentized volum-densimeter, which was made. by ourself. These primary values of normal and diffuse pathologic changes can refer easily and used for the diagnosis in human autopsy of pathology and forensic pathology. It is expectated to be co-operated widely in that the basic values of volume and density will be obtained from all organs of the human body with the population of different races. But up to now, we are still lack these primary values in anthropology and medicine.
Anthropometry ; instrumentation ; methods ; Brain ; anatomy & histology ; Forensic Medicine ; Heart ; anatomy & histology ; Humans ; Organ Size

OBJECTIVETo explore the methods for constructing the digital three-dimensional model of fetal heart.

METHODSOriginal two-dimensional CT image data sets were collected from 4 abortion fetuses with fetal malformations but not heart malformation or chromosomal abnormalities. The three-dimensional fetal heart model was reconstructed using Mimics14.0 software.

RESULTSIn the reconstructed three-dimensional fetal heart, the left atrium, left ventricle, right atrium, right ventricle, the ascending aorta, the main pulmonary and their branches, the superior cava and inferior vena cava were marked with different colors, and these structures could be displayed individually or with other structures. This model also allowed three-dimensional arbitrary scaling, shifting or rotation at any angle, and the diameter of the each vessel could be measured with the software.

CONCLUSIONThe fetal heart model can be successfully reconstructed from the CT datasets using three-dimensional reconstruction software to facilitate clinical and anatomical teaching.

Female ; Fetal Heart ; anatomy & histology ; Heart Atria ; anatomy & histology ; Heart Defects, Congenital ; Heart Ventricles ; anatomy & histology ; Humans ; Imaging, Three-Dimensional ; Models, Anatomic ; Pregnancy ; Software ; Tomography, X-Ray Computed ; Vena Cava, Inferior ; anatomy & histology

To assess the normal value of left ventricular twist (LVtw) and examine the changes with normal aging by 2-dimensional ultrasound speckle-tracking imaging (STI), 121 healthy volunteers were divided into three age groups: a youth group (19-45 y old), a middle-age group (46-64 y old) and an old-age group (> or = 65 y old). Basal and apical short-axis images of left ventricular were acquired to analyse LV rotation (LVrot) and LVrot velocity. LVtw and LVtw velocity was defined as apical LVrot and LVrot velocity relative to the base. Peak twist (Ptw), twist at aortic valve closure (AVCtw), twist at mitral valve opening (MVOtw), untwisting rate (UntwR), half time of untwisting (HTU), peak twist velocity (PTV), time to peak twist velocity (TPTV), peak untwisting velocity (PUV), time to peak untwisting velocity (TPUV) were separately measured. The results showed that the normal LV performs a wringing motion with a clockwise rotation at the base and a counterclock-wise rotation at the apex (as seen from the apex). The LVtw velocity showed a systolic counterclock-wise twist followed by a diastolic clockwise twist. Peak twist develops near the end of systole (96%+/-4.2% of systole). With aging, Ptw, AVCtw, MVOtw, HTU and PUV increased significantly (P<0.05) and UntwR decreased significantly (P<0.05). However, no significant differences in TPUV, PTV and TPTV were noted among the 3 groups (P>0.05). It is concluded that LV twist can be measured non-invasively by 2-dimensional ultrasound STI imaging. The age-related changes of LVtw should be fully taken into consideration in the assessment of LV function.
Aging ; Echocardiography ; Heart Ventricles/anatomy & histology ; Heart Ventricles/*ultrasonography ; Ventricular Function, Left/*physiology ; Young Adult

INTRODUCTIONProficiency in the anatomy of coronary arteries and their variations is important for proper interpretation of coronary angiographies. The left coronary artery (LCA) commonly originates at the level of the left posterior aortic sinus and normally bifurcates into the anterior interventricular artery and circumflex artery. This study aimed to determine the variations in the LCA and its branches.

METHODSThe study was conducted on 30 heart specimens. We observed the origin, length and branching pattern of the LCA and its coronary dominance.

RESULTSWe found a short main LCA trunk in three specimens and a long main LCA trunk in one specimen. In two specimens, the division of the LCA led to three branches. With regard to 'dominance', one specimen showed left dominance while another showed codominance.

CONCLUSIONVariations of the LCA are clinically relevant, especially when a perioperative coronary perfusion or coronary arteriography is performed.

Aged ; Aged, 80 and over ; Anatomy ; methods ; Cadaver ; Coronary Angiography ; methods ; Coronary Vessels ; anatomy & histology ; Heart ; anatomy & histology ; Humans ; Middle Aged ; Models, Anatomic

Objective To investigate the differences of heart mass and lung mass in forensic autopsy cases and to explore their application value in forensic identification. Methods The data from 1 614 autopsy cases accepted by center of Medico-legal Investigation of China Medical University between 2007 to 2016 were collected. The correlation of heart and lung mass with age, height, body weight, and body mass index （BMI）, as well as differences in different causes of death were analyzed by GraphPad Prism 6.0 software. Results The heart mass and lung mass of males were higher than those of females （P<0.05）. The heart mass of males and females was positively correlated with age, height, body weight and body mass index （BMI） （P<0.05）. The heart mass of patients dying from sudden cardiac death （SCD） was significantly higher than those dying from other causes of death. The lung mass of patients dying from drowning and delayed treatment was higher than those dying from other causes of death （P<0.05）. Conclusion In forensic practice, measurement of the heart mass and lung mass has certain significance for differential diagnosis and diagnosis of different causes of death.
Autopsy ; Cause of Death ; China ; Death, Sudden, Cardiac ; Female ; Forensic Pathology ; Heart/anatomy & histology* ; Humans ; Lung/anatomy & histology* ; Male ; Organ Size

Arrhythmia, Sinus ; physiopathology ; Arrhythmias, Cardiac ; physiopathology ; surgery ; Atrioventricular Node ; anatomy & histology ; physiology ; Catheter Ablation ; Electrophysiologic Techniques, Cardiac ; Electrophysiology ; Heart ; anatomy & histology ; physiology ; Heart Atria ; anatomy & histology ; Heart Conduction System ; physiology ; Humans ; Models, Cardiovascular ; Wolff-Parkinson-White Syndrome ; physiopathology

Sixty clinically normal German shepherd dogs, 31 males and 29 females, ranging in age from 1 and 5 years and with a body weight ranging from 22 to 37.2 kg, were examined by the two-dimensional mode, M-mode, and Doppler echocardiography. In Doppler mode, the mitral valve flows were obtained, where the aim was to determine the velocity peaks and ratios of the E and A waves and the mitral E wave deceleration time. The velocity peaks were obtained for the tricuspid, pulmonary and aortic valves. On the left ventricular outflow tract flow, the time velocity integral and aortic cross-sectional area was used to calculate the cardiac output. A statistically significant correlation with the body weight was found for the systolic left atrial and diastolic aortic diameter on twodimensional mode. On M-mode, there was a significant correlation between the body weight and the systolic left atrium and diastolic aortic dimension, systolic and diastolic left ventricular, septal and posterior wall dimensions. Doppler echocardiography showed that there was no significant correlation between the body weight and the mitral, tricuspid, pulmonary and aortic valves flows. These results demonstrate that it is important to know the normal echocardiographic values for German shepherd dogs because there are some characteristics peculiar to this particular breed. The data obtained is expected to be helpful for studies on small animal cardiology.
Animals ; Body Weight ; Dogs/*physiology ; Echocardiography/*veterinary ; Female ; Heart/anatomy&histology/*physiology ; Male ; Sex Characteristics

OBJECTIVETo test the accuracy of real-time three-dimensional echocardiography (RT3DE) imaging system for evaluating left ventricular mass (LVM) in phantom and excised canine heart.

METHODSTen left ventricular (LV) wall phantoms made of two rubber-bursas, ten excised canine hearts underwent RT3DE and two-dimensional echocardiography (2DE). In RT3DE "full volume" imaging, the myocardial volume was measured using 2, 4, 8, and 16-plane method with the analysis software of RT3DE. Mass was then calculated by multiplying the resulting myocardial volume by specific density of myocardial tissue. In 2DE the masses were measured by area-length method. The true LV wall phantom mass was measured by water displacement and the canine LVM was weighed by anatomy, which served as a reference standard. We compared RT3DE or 2DE with true mass.

RESULTSIn LV wall phantoms, RT3DE correlated with true masses strongly (r = 0.813-0.994) and weakly correlated between 2DE and true masses (r = 0.628). In excised canine hearts, there is an excellent correlation between RT3DE and true masses (r = 0.764-0.991), while 2DE value showed a lesser correlation (r = 0.514). There are no difference between RT-3DE and true masses (P > 0.05) but different between 2DE and true masses (P < 0.05). In different planes, there was no difference between 8-plane and 16-plane (P > 0.05) but different between 8-plane and 2, 4-plane (P < 0.05).

CONCLUSIONRT3DE can accurately quantify LVM and provide a new tool to evaluate LV function. For LVM by RT3DE, 8-plane measurement method is the best choice for accuracy and convenience.

Animals ; Dogs ; Echocardiography, Three-Dimensional ; instrumentation ; Heart Ventricles ; anatomy & histology ; diagnostic imaging ; Phantoms, Imaging

Conventional medical experiments can hardly simulate cardiac excitation propagation and observe the evolvement of cardiac electrical activities firsthand as is possible with computer simulation. Based on the anatomic structure of the heart, simulation of cardiac electrical activity mainly consists of the emulation of the excitation process among the cardiac cells and calculation of the electrical activities of individual cardiac cells. In this study we establish a geometric ventricular structure model demonstrating the direction of the cardiac muscle fibers and the layers of the ventricular cells, and endow different action potential models to the ventricular cells of different layers, and observe the activation process of the ventricular parts in view of the three-dimensional anatomy. This method gives attention to both enough calculation amounts and efficiency, which achieves satisfactory simulation results of ventricular electrical activity based on the anatomic structure and cell electrophysiology through an improved algorithm on personal computer.
Algorithms ; Computer Simulation ; Electrophysiology ; Heart ; anatomy & histology ; physiology ; Humans ; Models, Anatomic ; Models, Cardiovascular