Carcinoma ; diagnosis ; therapy ; Humans ; Paranasal Sinus Neoplasms ; diagnosis ; therapy

Humans ; Thyroid Neoplasms ; surgery ; Thyroidectomy ; methods ; standards

Humans ; Laryngeal Neoplasms ; therapy ; Larynx ; physiology

Carcinoma, Squamous Cell ; surgery ; Humans ; Hypopharyngeal Neoplasms ; surgery ; Laryngeal Neoplasms ; surgery ; Larynx ; physiology ; surgery

Objective: To identify the optimal rotation time and pitch of 64-slice spiral CT angiography for arterial occlusive diseases (AOD) of the lower limbs. Methods: We performed test-bolus in eighty patients with AOD of the lower limbs (48 with intermittent claudication and 32 with ischemic rest pain or ulceration) to confirm the aortic peak time, popliteal artery peak time and aortopopliteal bolus transit time. The patients were randomly assigned to receive two sets of scan protocols for lower limb arterial 64-slice spiral CT angiography (CTA) examination (n = 40), protocol A, with a gantry rotation time of 330 ms and a pitch of 1.0; protocol B, with a gantry rotation time of 500 ms and a pitch of 0. 85. Two experienced radiologists independently evaluated the image quality of the lower limb artery. Results: Great differences in the time to peak enhancement in the aorta (14-33 s) and popliteal arteries (20-48 s) and the aortopopliteal bolus transit time (4-24 s) were found between different AOD patients. Wide overlap of the time to peak enhancement and transit time was observed between intermittent claudication patients and ischemic rest pain or ulceration patients. The qualities of segment images were rated as excellent 63.3% (152/240), good 30.0% (72/240), and poor 30.0% (72/240) for protocol A, and excellent 98. 3% (234/238) and good 1. 7% (4/238) for protocol B, with no poor images in protocol B. Conclusion: 64-slice CTA with a gantry rotation time of 500 ms, a pitch of 0. 85, scan time>30 s, and with the contrast agent injection time maintained at 35 s, can obtain better image of lower limb arteries in patients with AOD of the lower limbs.

Female ; Fertilization in Vitro ; Humans ; Integrative Medicine ; Medicine, Chinese Traditional ; Ovary ; drug effects ; Ovulation Induction ; methods ; Pregnancy ; Pregnancy Rate

Head and Neck Neoplasms ; therapy ; Humans ; Palliative Care

Bone marrow mesenchymal cells (BMSCs) are regarded as donor cells in cell transplantation therapies for spinal cord injury (SCI) for they have the ability of favourable proliferation and multi-directional differentiation, and are easily isolated and culturd and have less immunological reaction. It has been confirmed that subarachnoid space injection is the most ideal delivery technique of BMSCs. Bone marrow mesenchymal stem cells transplantation is safe and its reconditioning role is certain for SCI in early clinical application. The mechanism of BMSCs promoting functional recovery after SCI is probably concerned with vicarious function, nerve trophism, immunosuppression and promoting axonal regeneration by BMSCs.
Animals ; Bone Marrow Cells ; cytology ; Humans ; Mesenchymal Stem Cell Transplantation ; methods ; Mesenchymal Stromal Cells ; cytology ; Spinal Cord Injuries ; surgery

Genetic Therapy ; Head and Neck Neoplasms ; therapy ; Humans

Objective To evaluate the utility of three-dimensional digital subtraction angiography(3D-DSA) in the diagnosis of cerebral vascular diseases.Methods Seventy-one patients suspected and diagnosed with cerebral vascular diseases underwent conventional DSA and 3D-DSA. Three-dimensional (3-D) reconstructed images were obtained at a separate advantage 4.0 workstation after the rotational images were transferred. The available visualization techniques included maximum intensity projection (MIP), shaded surface display (SSD), and virtual angioscopy (VA). Results Sixty-four aneurysms were found in 44 cases. Nineteen cases were diagnosed as cerebral arteriovenous malformation (AVM) and 8 cases of cerebral ischemia were due to cerebral vascular stenosis (internal carotid artery in 6 cases and occlusion of anterior cerebral artery in 2 cases).Conclusions 3D-DSA is reliable, fast and safe for diagnosis of cerebral vascular diseases, especially involving intracanal areurysms AVM and vascular stenosis.