In this paper, we present an efficient and optimal method for optimization of Hahn parameters and using the Artificial Bee Colony algorithm (ABC) in order to improve the quality of reconstruction and the compression of bio-signals and color images of large sizes. The proposed methods are essentially based on two concepts: the development of a recursive calculation of the initial terms of Hahn polynomials in order to avoid the problems of instability of polynomial values and the use of ABC algorithm to optimize the values of the parameters and of the discrete orthogonal Hahn polynomials () during the reconstruction and the compression of bio-signals and color images. The simulation results performed on bio-signals and on large size / color images clearly show the efficiency and superiority of the proposed methods over conventional methods in terms of reconstruction of signals and images.
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http://dx.doi.org/10.1007/s11042-022-12978-x | DOI Listing |
MAGMA
December 2024
Department of Radiology and Medical Informatics, Faculty of Medicine, University of Geneva, Geneva, Switzerland.
Objectives: Phosphorus-31 magnetic resonance spectroscopic imaging (P-MRSI) is a non-invasive tool for assessing cellular high-energy metabolism in-vivo. However, its acquisition suffers from a low sensitivity, which necessitates large voxel sizes or multiple averages to achieve an acceptable signal-to-noise ratio (SNR), resulting in long scan times.
Materials And Methods: To overcome these limitations, we propose an acquisition and reconstruction scheme for FID-MRSI sequences.
BMC Musculoskelet Disord
December 2024
Center for Joint Surgery, The First Hospital Affiliated to Army Medical University, Chongqing, 400038, China.
Background: Although chronic quadriceps tendon rupture and defect are rare, they pose significant challenges in surgical treatment. In these cases, quadriceps tendon reconstruction is necessary. Either autologous or allogeneic tendons have been used for this reconstruction.
View Article and Find Full Text PDFJ Small Anim Pract
December 2024
The Queen Mother Hospital for Animals, Royal Veterinary College, Hatfield, UK.
Construct failure is a rare complication of tibial cranial closing wedge ostectomy for the management of cranial cruciate ligament disease. Construct failure can present significant challenges for reconstruction. This case report describes three dogs with construct failure which were successfully revised by the repurposing of an inverted femoral supracondylar femoral plate as part of the revision.
View Article and Find Full Text PDFAsian J Endosc Surg
December 2024
Department of Surgery and Science, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Japan.
We report a case in which a giant hepatic cyst located at the hepatic hilum and compressing the inferior vena cava was safely treated laparoscopically with careful attention to hemodynamics in a difficult fenestrated resection in a patient with severe kyphosis. The anatomic location of the cyst was evaluated preoperatively via 3D reconstruction of computed tomography images to identify a site where safe fenestrated resection could be performed. This was challenging because the surgical field was narrow due to the presence of severe kyphosis, and there was a risk of damage to surrounding organs during fenestrated resection.
View Article and Find Full Text PDFJBJS Essent Surg Tech
December 2024
Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, Connecticut.
Background: For complete disruption of the posterolateral corner (PLC) structures, operative treatment is most commonly advocated, as nonoperative treatment has higher rates of persistent lateral laxity and posttraumatic arthritis. Some studies have shown that acute direct repair results in revision rates upwards of 37% to 40% compared with 6% to 9% for initial reconstruction. In a recent study assessing the outcomes of acute repair of PLC avulsion injuries with 2 to 7 years of follow-up, patients with adequate tissue were shown to have a much lower failure rate than previously documented.
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