Taking advantages of the sparsity or compressibility inherent in real world signals, compressed sensing (CS) can collect compressed data at the sampling rate much lower than that needed in Shannon’s theorem. The combination of CS and low rank modeling is used to medical imaging techniques to increase the scanning speed of cardiac magnetic resonance (CMR), alleviate the patients’ suffering and improve the images quality. The alternating direction method of multipliers (ADMM) algorithm is proposed for multiscale low rank matrix decomposition of CMR images. The algorithm performance is evaluated quantitatively by the peak signal to noise ratio (PSNR) and relative l2 norm error (RLNE), with the human visual system and the local region magnification as the qualitative comparison. Compared to L + S, kt FOCUSS, k-t SPARSE SENSE algorithms, experimental results demonstrate that the proposed algorithm can achieve the best performance indices, and maintain the most detail features and edge contours. The proposed algorithm can encourage the development of fast imaging techniques, and improve the diagnoses values of CMR in clinical applications.
目的 观察后路环形减压治疗胸腰椎爆裂骨折术后2～5年的临床疗效及并发症发生情况。 方法 回顾性分析2007年1月－2011年3月23例胸腰椎椎体爆裂骨折患者资料，23例患者存在骨折压迫硬膜合并神经症状，均予后路环形减压。术后定期随访，采用日本骨科协会评估治疗分数、美国脊髓损伤协会脊髓损伤分级评定临床疗效及神经功能改善情况，通过影像学资料观察脊柱Cobb角变化情况。 结果 23例患者手术顺利，经过2～5年的随访，出现术后脑脊液漏3例，尿路感染5例，经对症处理后好转。 结论 经椎弓根内侧行椎体后壁切除，可良好减压，避免神经挤压继发加重损伤，有利于神经功能恢复。
ObjectiveTo investigate the efficiency of double moxibustion combined with intermittent catheterization on urination diary in patients with neurogenic bladder (NB) after spinal cord injury (SCI).MethodsFrom August 2014 to August 2016, hospitalized patients with NB after SCI were reviewed retrospectively and classified into the moxibustion group and the routine group. The urination diary related indicators, International Urinary Incontinence Advisory Committee Urinary Incontinence Questionnaire Short Form (ICI-SQ-SF) score, and routine urine leucocyte count were collected.ResultsA total of 278 patients were enrolled in the study, in whom, the data of 96 were incomplete, and 26 got lost to follow-up. The routine group and the moxibustion group finally contained 70 and 86 respectively. There was no significant difference between the two groups in sex, age, average course of the disease, SCI segment or grading of injury (P>0.05). After 2 months treatment, the urine routine leucocyte count decreased to (5.72± 0.36)/μL in the routine group and (3.22±0.27)/μL in the moxibustion group, and the ICI-Q-SF score decreased to 8.61±0.45 in the routine group and 5.07±0.38 in the moxibustion group. The urine routine leucocyte count and ICI-Q-SF score were lower than those before treatment, and were lower in the moxibustion group than those in the routine group (P<0.05). In the 7th to 8th week, in the routine group, the average single urine volume was (300±70) mL, the interval between two micturition was (3.5±0.6) hours, the frequency of urinary incontinence was (3.3±0.4) times per week, and the average residual urine volume was (125±42) mL; in the moxibustion group, they were (326±78) mL, (3.8±1.1) hours, (2.3±0.3) times per week, and (103±37) mL, respectively. The indexes were not statistically significant different from those in the 1st to 2nd week (P>0.05), except the average single urine volume in the routine group and all the indexes in the moxibustion group (P<0.05). They were all better in the moxibustion group than those in the routine group (P<0.05).ConclusionThe treatment of moxibustion and intermittent catheterization may improve bladder function, reduce residual urine, reduce urinary incontinence and improve the quality of life for patients with NB after SCI.
Objective To review the research progress in the construction strategy and application of bone/cartilage immunomodulating hydrogels. Methods The literature related to bone/cartilage immunomodulating hydrogels at home and abroad in recent years was reviewed and summarized from the immune response mechanism of different immune cells, the construction strategy of immunomodulating hydrogels, and their practical applications. Results According to the immune response mechanism of different immune cells, the biological materials with immunoregulatory effect is designed, which can regulate the immune response of the body and thus promote the regeneration of bone/cartilage tissue. Immunomodulating hydrogels have good biocompatibility, adjustability, and multifunctionality. By regulating the physical and chemical properties of hydrogel and loading factors or cells, the immune system of the body can be purposively regulated, thus forming an immune microenvironment conducive to osteochondral regeneration. ConclusionImmunomodulating hydrogels can promote osteochondral repair by affecting the immunomodulation process of host organs or cells. It has shown a wide application prospect in the repair of osteochondral defects. However, more data support from basic and clinical experiments is needed for this material to further advance its clinical translation process.
目的 探讨改良的经脐单孔腹腔镜胆囊切除术的临床可行性。 方法 回顾性分析2009年2月－2012年4月75例患者行改良经脐单孔腹腔镜手术的临床资料。其中39例胆囊结石，20例胆囊息肉，急性胆囊炎14例，急性胆囊炎伴穿孔2例。 结果 73例手术均成功完成，2例转为传统三孔腹腔镜胆囊切除术后顺利完成手术，无中转开腹。平均手术时间为54.4 min （23～120 min）。术中出血量5～30 mL，平均(14.9 ± 5.10) mL。术后疼痛轻，恢复快，3 d后出院。随访1～10个月，未出现出血、漏胆、胆管损伤、消化道损伤、切口疝等并发症。且瘢痕隐蔽，不易发现。 结论 改良后的经脐单孔腹腔镜胆囊切除术安全可行，具有微创、经济、恢复快等优点，具有推广价值。