We study the local minima relocation of the fractionally spaced Constant Modulus Algorithm(FSE-CMA) cost function in the presence of noise. Local minima move in a particular direction as the noise power increases and their number may be eventually reduced. In such cases the performance of FSE-CMA may fail to adequately reduce inter symbol interference (ISI), but achieve an approximated MMSE by ...

In the noise-free case, the fractionally spaced equalization using constant modulus (FSE-CM) criterion has been studied previously. Its minima were shown to achieve perfect equalization when zero-forcing (ZF) conditions are satisfied and to be able to still achieve fair equalization when there is lack of disparity. However, to our best knowledge, the effect of additive channel noise on the FSE-...

PURPOSE To compare various pulse sequences in terms of percent contrast and contrast-to-noise ratio (CNR) for detection of focal multiple myeloma lesions and to assess the dependence of lesion conspicuity on the bone marrow plasma cell percent (BMPC%). MATERIALS AND METHODS Sagittal T1-weighted FSE, fat-suppressed T2-weighted FSE (FS- T2 FSE), fast STIR and iterative decomposition of water an...

Verification condition (VC) generation is a fundamental part of many program analysis and applications, including proving program correctness, automatic test case generation, and proof carrying code. One might imagine VC applications would use the theoretically most appealing VC generation algorithm. This is often not the case. The most theoretically appealing algorithms are based upon weakest ...

Previously published fast spin-echo (FSE) implementations of a Dixon method for water and fat separation all require multiple scans and thus a relatively long scan time. Further, the minimum echo spacing (esp), a time critical for FSE image quality and scan efficiency, often needs to be increased in order to bring about the required phase shift between the water and fat signals. This work propo...

BACKGROUND AND PURPOSE We applied a 3D fast spin-echo (3D-FSE) MR imaging technique to the preoperative and postoperative evaluation of patients with hemifacial spasm. METHODS The study group comprised 20 patients. All images were acquired on a 1.5-T MR system with a 3D-FSE sequence. RESULTS In all 20 patients, the courses of the seventh and eighth cranial nerves were depicted separately, a...

In this work, a number of important issues associated with fast spin echo (FSE) imaging of the human brain at 4.7 T are addressed. It is shown that FSE enables the acquisition of images with high resolution and good tissue contrast throughout the brain at high field strength. By employing an echo spacing (ES) of 22 ms, one can use large flip angle refocusing pulses (162 degrees ) and a low acqu...

Mullerian duct anomalies are an uncommon but often treatable cause of infertility. Patients with müllerian duct anomalies are known to have a higher incidence of infertility, repeated first-trimester spontaneous abortions, fetal intrauterine growth retardation, fetal malposition, preterm labor, and retained placenta. The role of imaging is to help detect, diagnose, and distinguish surgically co...

Verification condition (VC) generation is a fundamental part of many program analysis and applications, including proving program correctness, automatic test case generation, and proof carrying code. One might imagine VC applications would use the theoretically most appealing VC generation algorithm. This is often not the case. The most theoretically appealing algorithms are based upon weakest ...