Supersonic Biplane as an Innovative Supersonic Transport Sonic boom noise inhibits the popularization of supersonic aircraft. This study is undertaken to develop a solution to this problem based on supersonic biplane theory. The feasibility of a proposed supersonic biplane concept “MISORA” presented in Fig. 1 has been investigated experimentally as well as numerically. Figure 2 shows a near-fie...

condylar dislocation is not an uncommon condition and occurs when the condyles are displaced anterior to the articular eminence and are unable to reduce back into the glenoid fossa. long-standing dislocations are difficult to treat with the conservative methods and usually need surgical intervention. in this paper, a long-standing dislocation treated by bilateral extra-oral ramus osteotomy is d...

BACKGROUND Left atrial (LA) enlargement has been documented to occur in moderate and severe hypertension. METHODS AND RESULTS One hundred twelve mild hypertension patients were prospectively recruited and compared with 198 healthy volunteers. All recruits had a transthoracic echocardiogram. Maximum LA biplane volume, minimum LA biplane volume, and pre 'p'-LA biplane volume were measured, and ...

o bjectives: the aim of this study was to investigate the displacement and stress distri- bution during surgically assisted rapid maxillary expansion under different surgical conditions with tooth- and bone-borne devices. materials and methods: three-dimensional (3d) finite element model of a maxilla was constructed and an expansion force of 100 n was applied to the left and right molars and pr...

This paper discusses a multidisciplinary design optimization of a three-dimensional supersonic biplane. First, methods to evaluate the performance of a supersonic biplane are described. The methods include modified oblique shock wave equations, a modified Method of Characteristics, and the reference enthalpy method. Second, validations of the present methods are described. Finally, a multidisci...

OBJECTIVES This study investigated the accuracy of mitral inflow quantification using biplane transesophageal echocardiography. BACKGROUND Mitral stroke volume can be reliably quantified by transthoracic Doppler echocardiography, but previous studies involving monoplane transesophageal echocardiography have yielded mixed results. METHODS Thirty patients without mitral regurgitation were pro...

BACKGROUND Biplane angiographic and transthoracic echocardiographic volume calculations have shown to be sufficiently reliable in symmetric hearts; however, they are unreliable in the presence of aneurysmatic distortions. Multiplane transoesophageal echocardiography offers unobstructed cross-sectional views of the heart from one stable transducer position with the potential of imaging irregular...

OBJECTIVES To determine whether biplane transoesophageal imaging offers advantages in the evaluation of mitral prostheses when compared with standard single transverse plane imaging or the precordial approach in suspected prosthetic dysfunction. DESIGN Prospective mitral valve prosthesis in situ using precordial and biplane transoesophageal ultrasonography. SETTING Tertiary cardiac referral...

PURPOSE To investigate left atrial volumes and function and their variability in healthy volunteers using steady state free precession (SSFP) and fast low angle shot (FLASH) sequences at both 1.5 and 3 T using both the short-axis and biplane area-length methods. MATERIALS AND METHODS Ten healthy volunteers underwent CMR at both 1.5 and 3 Tesla. The biplane area-length method utilized volumes ...