[Magnetic resonance imaging for the diagnosis of sacroiliitis in Israel: our experience in the last five years].

Purpose: Spondyloarthropathies are characterized by inflammatory involvement of the sacroiliac joints [SIJ] and sacroiliitis is a diagnostic criterion for the disease. Magnetic resonance imaging (MRI) is considered the preferred imaging modality for detection and diagnosis of sacroiliitis in its early stages. We reviewed MRI examinations of the SIJ performed in our institution, evaluated the findings and the change in study prevalence along the years.

Osteoid osteoma--the CT vessel sign.

Objective: To evaluate whether the presence of a feeding vessel in proximity to osteoid osteomas of long bones on multidetector CT (MDCT) can be an adjuvant clue for the diagnosis of osteoid osteoma.

Materials And Methods: Forty-nine CT scans of patients with radiological and clinical diagnosis of osteoid osteoma of long bones and a control group of 20 CT scans of patients with cortical-based lesions other then osteoid osteoma were analyzed. Two radiologists evaluated the CT images in consensus for the presence of a blood vessel in the same axial slices in which the nidus of osteoid osteoma was seen and to determine the incidence.

[Percutaneous CT guided radio-frequency ablation of osteoid osteoma and osteoblastoma].

Background: Osteoid osteoma (OO) is a benign osteoblastic bone lesion that causes severe local pain mainly at night, and usually responds to oral administration of NSAID. The lesion is located around the proximal thigh in more than 50% of the cases. Osteoblastoma is similar to OO in their histopathology features, but emerges frequently in the spine, and has a larger diameter than OO.

Is magnetic resonance imaging safe for patients with retained metal fragments from combat and terrorist attacks?

Background: Increasing numbers of military confrontations and terrorist attacks have led to increasing reports of retained metal fragments among patients referred for magnetic resonance imaging (MRI). The potential hazard of retained metal fragments for patients undergoing MRI has been studied among patients with retained metal fragments from domestic violence but not from combat and terrorist attacks.

Purpose: To retrospectively evaluate the safety of MRI in patients with subcutaneous warfare-metal fragments.

Pain palliation in patients with bone metastases using MR-guided focused ultrasound surgery: a multicenter study.

Background: Noninvasive thermal ablation using magnetic resonance (MR)-guided focused ultrasound (MRgFUS) has been shown to be clinically effective in uterine fibroids, and is being evaluated for ablation of breast, liver, and brain lesions. Recently MRgFUS has been evaluated for palliation of pain caused by bone metastases. We present the clinical results of a multicenter study using MRgFUS for palliation of bone metastases pain.

Strains and stresses in sub-dermal tissues of the buttocks are greater in paraplegics than in healthy during sitting.

A pressure-related deep tissue injury (DTI) is a severe pressure ulcer, which initiates in muscle tissue overlying a bony prominence (e.g. the ischial tuberosities, IT) and progresses outwards through fat and skin, unnoticed by the paralyzed patient.

Assessment of mechanical conditions in sub-dermal tissues during sitting: a combined experimental-MRI and finite element approach.

A common but potentially severe malady afflicting permanent wheelchair users is pressure sores caused by elevated soft tissue strains and stresses over a critical prolonged period of time. Presently, there is paucity of information regarding deep soft tissue strains and stresses in the buttocks of humans during sitting. Strain and stress distributions in deep muscle and fat tissues were therefore calculated in six healthy subjects during sitting, in a double-donut Open-MR system, using a "reverse engineering" approach.

Sonographically guided hydrostatic reduction of intussusception in children.

Purpose: The aim of this study was to assess the efficacy of sonographically guided hydrostatic enema in therapeutic reduction of intussusception in children and to determine whether certain factors may predict the outcome of this technique.

Methods: We retrospectively reviewed the medical records and sonographic examinations of 83 consecutive children sonographically diagnosed with 101 cases of intussusception over a 40-month period. In 99 cases, sonographically guided hydrostatic reduction was attempted.