Objective: Different perfusion metrics were investigated to determine the accuracy of Perfusion CT (PCT) in differentiating recurrence of brain metastases from radiation necrosis in patients who previously underwent stereotactic radiation therapy (SRT).
Patients And Methods: Twenty patients previously treated with SRT underwent PCT examination of the brain. Normalized Cerebral Blood Volume (nCBV) values within the region of interest (ROI) were calculated.
Invest Radiol
February 2011
Objectives: : To prospectively compare clinical breast examination, mammography, ultrasonography, and contrast-enhanced magnetic resonance imaging (MRI) in a multicenter surveillance of high-risk women.
Materials And Methods: : We enrolled asymptomatic women aged ≥ 25: BRCA mutation carriers; first-degree relatives of BRCA mutation carriers, and women with strong family history of breast/ovarian cancer, including those with previous personal breast cancer.
Results: : A total of 18 centers enrolled 501 women and performed 1592 rounds (3.
Background: To retrospectively compare the diagnostic accuracy of magnetic resonance imaging (MRI) and multidetector-row computed tomography (MDCT) in the assessment of the mandibular invasion by squamous cell carcinoma (SCC) having histopathological exams as standard of reference.
Materials And Methods: Institutional review board approval with a waiver of informed patient consent was obtained. Of the 147 patients selected from our database who underwent surgical excision of a tumour arising into the oral cavity, thirty-six patients (26 men, 10 women; mean age, 56 years; range, 30-75 years) with hystologically proven SCC who performed both a preoperative MRI and MDCT, composed our final study population.
Background: The paper reports a quantitative analysis of the perfusion maps of 22 patients, affected by gliomas or by metastasis, with the aim of characterizing the malignant tissue with respect to the normal tissue. The gold standard was obtained by histological exam or nuclear medicine techniques. The perfusion scan provided 11 parametric maps, including Cerebral Blood Volume (CBV), Cerebral Blood Flow (CBF), Average Perfusion (Pmean) and Permeability-surface area product (PS).
View Article and Find Full Text PDFPurpose: The aim was to correlate the color Doppler flow activity pre- and postradiotherapy, using transrectal color Doppler ultrasonography (CDUS) and the 2 year positive biopsy rate after radiotherapy in patients with prostate cancer.
Methods And Materials: Analysis was carried out in 69 out of 160 patients who had undergone treatment with 3D-conformal radiotherapy (3D-CRT) to prostate and seminal vesicles. Patients were randomized to receive 80 Gy in 40 fractions in 8 weeks (arm A) and 62 Gy in 20 fractions in 5 weeks, 4 fractions per week (arm B).
Study Design: The paper reports a minimally invasive approach to the dorsolumbar spine for the removal of neurofibromas.
Objectives: Demonstrating that a limited unilateral approach is the one of choice for this kind of tumors.
Summary Of Background Data: Spinal intradural extramedullary tumors are generally removed by single-level or multilevel laminectomy with midline dural incision.
Study Design: This report documents a case of asymptomatic esophageal perforation, secondary to a dislocated and then migrated cervical screw after anterior plating, and reviews the relevant Western literature.
Objectives: To report a rare and potentially dangerous complication and suggest mechanisms of asymptomatic esophageal perforation and healing.
Summary Of Background Data: Anterior surgical approaches to the cervical spine have become popular and safer during the past decade.