全文获取类型
收费全文 | 391篇 |
免费 | 48篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 2篇 |
基础医学 | 4篇 |
口腔科学 | 1篇 |
临床医学 | 82篇 |
内科学 | 129篇 |
神经病学 | 1篇 |
特种医学 | 57篇 |
外科学 | 92篇 |
综合类 | 29篇 |
预防医学 | 2篇 |
眼科学 | 1篇 |
药学 | 4篇 |
中国医学 | 1篇 |
肿瘤学 | 38篇 |
出版年
2024年 | 1篇 |
2023年 | 12篇 |
2022年 | 7篇 |
2021年 | 19篇 |
2020年 | 21篇 |
2019年 | 18篇 |
2018年 | 16篇 |
2017年 | 24篇 |
2016年 | 17篇 |
2015年 | 22篇 |
2014年 | 22篇 |
2013年 | 35篇 |
2012年 | 30篇 |
2011年 | 24篇 |
2010年 | 23篇 |
2009年 | 31篇 |
2008年 | 34篇 |
2007年 | 21篇 |
2006年 | 10篇 |
2005年 | 19篇 |
2004年 | 7篇 |
2003年 | 10篇 |
2002年 | 7篇 |
2001年 | 2篇 |
2000年 | 3篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
排序方式: 共有445条查询结果,搜索用时 31 毫秒
1.
肺癌是世界上发病率最高的恶性肿瘤之一,外科手术为首选治疗方式。近年来许多新兴微创技术治疗肺癌取得了良好效果。氩氦冷冻消融术因具有损伤小、恢复快、安全性高、并发症少等优点,已取得医患双方认可。冷冻消融适用于不能手术切除的早期肺癌及减少晚期肺癌负荷。肿瘤是一种全身性疾病,因此冷冻消融联合其他治疗方法将是未来肺癌治疗发展方向,从而改善患者临床症状,提高生活质量,延长生存时间,达到最佳治疗效果。该文就冷冻消融治疗及与其他方法综合治疗肺癌研究现状和进展作一综述。 相似文献
2.
经皮穿刺氩氦刀冷冻治疗肝癌56例临床分析 总被引:11,自引:0,他引:11
目的 探讨氩氦刀冷冻治疗肝脏恶性肿瘤的临床意义。方法 2 0 0 1年 7月~ 2 0 0 2年6月 5 6例肝脏恶性肿瘤在B型超声引导下行经皮穿刺氩氦刀冷冻治疗。术后患者定期复查血清肿瘤标记物、B型超声检查及CT或MRI。结果 患者肝功能ChildA级 5 0例 ,ChildB级 5例 ,ChildC级 1例。原发性肝癌 4 6例 ,转移性肝癌 10例。小肝癌 (直径≤ 5cm)甲胎蛋白阳性者治疗后转阴占80 % ,甲胎蛋白阴性者治疗后CT或MRI复查病灶完全坏死达 6 1.5 %。转移性肝癌治疗后瘤标降至正常或CT、MRI提示病灶完全坏死者占 6 0 %。结论 氩氦刀冷冻治疗肝脏恶性肿瘤是一种微创、安全、疗效可靠的新方法。对于不适宜行手术治疗的肝脏恶性肿瘤患者是一种有效的微创外科治疗方法。 相似文献
3.
S. Sandramouli R. Sihota N. N. Sood 《Documenta ophthalmologica. Advances in ophthalmology》1993,84(2):179-185
In a prospective study, the effect of anterior retinal cryoablation (ARC) in the management of neovascular glaucoma (NVG) was evaluated over two years, in 72 patients (74 eyes). The outcome of trabeculectomy/seton surgery preceded by 360° ARC was also analysed in 12 eyes of 12 patients (6 eyes in each group). Following ARC, pain relief with dramatic regression of anterior chamber inflammatory reaction was observed in 95% of the patients (59 eyes). At the end of the follow up, as confirmed by iris fluorescein angiography, regression of neovascularization of the iris was documented in 93.5% (58 eyes) of the cases. Intraocular pressure control (22 mm Hg) was achieved in 82.3% (51 eyes) cases. IOP control of 22 mm Hg was achieved in all the 6 eyes with the seton surgery following ARC. Similarly, control of IOP was successfully achieved in all the 6 eyes of patients with NVG with trabeculectomy with post operative course of 5-fluorouracil following ARC. ARC is strongly recommended in NVG, especially in eyes with media opacities and as a preliminary procedure for filtering surgery or drainage implant surgery.Abbreviations ARC
Anterior retinal cryoablation
- NVG
Neovascular glaucoma
- NVI
Neovascularization of the iris 相似文献
4.
《Expert review of anticancer therapy》2013,13(6):830-836
New minimally invasive technologies are currently being applied to the management of renal cell carcinoma in an effort to decrease operative time, pain, morbidity and hospital stay. Foremost among these is the burgeoning role of laparoscopy in tumor destruction and complete in vivo resection. The primary modalities in clinical use today are laparoscopic radical nephrectomy, laparoscopic partial nephrectomy, laparoscopic renal cryoablation and laparoscopic radiofrequency ablation. Most initial reports include only highly selected patients with unifocal, small, exophytic, peripheral lesions away from the collecting system. As experience with these techniques increases, larger and more difficult lesions are being approached laparoscopically, with promising anecdotal results reported. Laparoscopic access to the kidney may be retroperitoneal or transperitoneal. Complete tumor destruction with maximal preservation of unaffected nephrons remains the goal. Herein, an update on laparoscopic surgery for renal cell carcinoma is presented. For each procedure, the current indications and contraindications, perioperative data, complications and oncological outcomes are described. In the future, it appears likely that laparoscopy will play a major role in the established treatment options for renal cell carcinoma, with open surgery being reserved for specific indications. 相似文献
5.
6.
Petrellis B Skanes AC Klein GJ Gollob MH Krahn AD Yee R 《Journal of cardiovascular electrophysiology》2005,16(5):546-551
Accessory pathways are typically located along the left or right atrioventricular junction. Distinct ventricular pre-excitation patterns determined by surface electrocardiography can provide reasonable pathway localization prior to invasive mapping and catheter ablation. We report an accessory pathway producing an unusual electrocardiographic appearance suggestive of ventricular outflow region pre-excitation. Pacing maneuvers and standard intracardiac recordings confirmed an atrial insertion immediately adjacent to the atrioventricular (AV) node and supported a ventricular insertion at the outflow tract region well away from the AV junction. The elimination of pathway conduction was achieved with radiofrequency (RF) energy at the atrial insertion after successful ice mapping excluded AV block at the target site. This is the second such pathway observed at our institution over a 20-year period. 相似文献
7.
Parvez B Pathak V Schubert CM Wood M 《Journal of cardiovascular electrophysiology》2008,19(5):528-534
Introduction: The relative lesion sizes created by large electrode cryoablation catheter and irrigated radiofrequency (RF) ablation are not known. The purpose of this study was to directly compare lesion sizes created by cryoablation and irrigated RF under controlled conditions.
Methods and Results : Ablation lesions were created in freshly harvested porcine left ventricular myocardium in a blood-filled tissue bath using an 8-mm-tip cryoablation catheter and a 3.5-mm-tip open-irrigated RF ablation catheter. Lesions were created under all permutations of the following conditions: electrode orientation vertical (perpendicular) or horizontal (parallel) to the tissue, electrode contact pressure at 6 or 20 g, and blood flow at 0.2 or 0.4 m/s over the electrode-tissue interface. The largest lesion volumes created with cryoablation were 961 ± 103 mm3 , compared with the largest lesions volumes created with RF of 680 ± 48 mm3 (P < 0.001). The 3-way interactions among electrode orientation, contact pressure, and superfusate blood velocity accounted for the variation in lesion volumes for both catheters (both r2 = 0.97, both P < 0.0001). The greater contact pressure increased lesion size for both cryoablation and RF. For cryoablation, lesion sizes were increased by the horizontal orientation and by the lower blood flow velocity. For open-irrigated RF, lesion sizes were significantly reduced by the horizontal orientation, however.
Conclusions : Depending on conditions of electrode orientation, contact pressure, and blood velocity, either 8-mm-tip cryoablation or open-irrigated RF may produce the larger lesion volumes. Open-irrigated RF lesion sizes are reduced in the horizontal catheter orientation. 相似文献
Methods and Results : Ablation lesions were created in freshly harvested porcine left ventricular myocardium in a blood-filled tissue bath using an 8-mm-tip cryoablation catheter and a 3.5-mm-tip open-irrigated RF ablation catheter. Lesions were created under all permutations of the following conditions: electrode orientation vertical (perpendicular) or horizontal (parallel) to the tissue, electrode contact pressure at 6 or 20 g, and blood flow at 0.2 or 0.4 m/s over the electrode-tissue interface. The largest lesion volumes created with cryoablation were 961 ± 103 mm
Conclusions : Depending on conditions of electrode orientation, contact pressure, and blood velocity, either 8-mm-tip cryoablation or open-irrigated RF may produce the larger lesion volumes. Open-irrigated RF lesion sizes are reduced in the horizontal catheter orientation. 相似文献
8.
Finn Akerström MBChB Alberto Puchol MD Marta Pachón MD Cristina Martín‐Sierra MD Luis Rodíguez‐Padial MD PhD Miguel A. Arias MD PhD 《Pacing and clinical electrophysiology : PACE》2018,41(10):1362-1364
A 16‐year‐old male presented with an orthodromic atrioventricular reentrant tachycardia over a concealed parahisian accessory pathway (AP). Cryoablation of the AP resulted in transient manifestation of a fully preexcited sinus rhythm of parahisian AP morphology. Potential causes for the paradoxical preexcitation include inadvertent atrioventricular nodal block, sourse‐sink mismatch, as well as the activation of a dormant AP capable of anterograde conduction. 相似文献
9.
Carlo de Asmundis MD PhD Gian‐Battista Chierchia MD PhD Marc La Meir MD PhD 《Pacing and clinical electrophysiology : PACE》2018,41(9):1264-1265
A 75‐year‐old male patient was referred for longstanding atrial fibrillation ablation. We performed this procedure combining an epicardial and endocardial approach. Under general anesthesia and via a left‐sided thoracoscopic approach, we isolated the pulmonary veins (PVs) and the roofline and inferior line were created using a radiofrequency tool. To isolate the endocardial PVs, a transseptal puncture was performed via the groin, and a cryoablation CoolLoop catheter (AFreeze GmbH, Innsbruck, Austria) was advanced into the left atrium. Ice crystals started to appear on the epicardial surface of the left inferior PV antrum after 121 seconds later, those crystals had formed an ice plaque. For the first time in humans, we were able to visualize the transmural effects of cryothermal energy ablation via a CoolLoop catheter on the epicardial surface of the ostium of the PV. 相似文献
10.
Ultralow temperature cryoablation: Safety and efficacy of preclinical atrial and ventricular lesions
Felix Bourier MD Masateru Takigawa MD PhD Anna Lam MD Konstantinos Vlachos MD F. Daniel Ramirez MD MSc Claire A. Martin MD Antonio Frontera MD PhD Takeshi Kitamura MD Josselin Duchateau MD Thomas Pambrun MD Nicolas Derval MD Arnaud Denis MD Jerry Cox MD David Cabrita MD Alexander Babkin PhD Marion Constantin MA Pierre Jais MD Frédéric Sacher MD PhD Rémi Dubois MD PhD Oliver Bernus PhD Michel Haissaguerre MD Mélèze Hocini MD 《Journal of cardiovascular electrophysiology》2021,32(3):570-577