hydatidosis is a parasitic disease in all over the world which is caused by a cestode (tape worm). liver, lung, and brain are the most common involved organs and involvement of muscles and bones is unusual. we report a 32years old man who had low back and radicular leg pain. he had a paravertebral mass with involvement of spinal column. this patient was operated with differential diagnosis of t...

High-voltage paraspinal electrical stimulation; High-voltage percutaneous electrical stimulation; Magnetic paravertebral stimulation; Magnetic spinal stimulation; Paravertebral neuromagnetic stimulation; Spinal electromagnetic stimulation; Spinal neuromagnetic stimulation; Spinal root stimulation; Transcutaneous posterior root stimulation; Transcutaneous spinal cord stimulation; Transcutaneous ...

We study the spin-1/2 Heisenberg model on the square lattice with first- and second-neighbor antiferromagnetic interactions J(1) and J(2), which possesses a nonmagnetic region that has been debated for many years and might realize the interesting Z(2) spin liquid. We use the density matrix renormalization group approach with explicit implementation of SU(2) spin rotation symmetry and study the ...