OBJECTIVE To enable development of an endoscope for cellular-level optical imaging of the inner ear. STUDY DESIGN A prospective study of 50 cadaveric human temporal bones to define detailed surgical anatomy of the round window (RW) region and the range of angles necessary to reach the RW membrane perpendicularly via the external ear canal. MAIN OUTCOME MEASURE The transcanal angle to the RW...

A 76-year-old man with symptomatic bone metastases from castrationresistant prostate cancer underwent Radium-223-dichloride (Ra-223) therapy. Before Ra-223 therapy, he had normal peripheral blood cell counts. Ra-223 therapy relieved his shoulder and low back pain. The elevation of the serum prostate-specific antigen (PSA), doubling every month during Ra-223 therapy, suggested a PSA flare or rel...

S – GUEST LECTURES.....................................20 − LAMINOPLASTY BY SPINOUS PROCESS-SPLITTING) FOR ..................................20 − MULTI-LEVEL CERVICAL MYELOPATHY .................................................................20 − BIOMECHANICS OF MYELOPATHY .........................................................................21 − BIOMECHANICS OF TREATMENTS FOR MYELOPATHY .....

Osteosarcoma (osteogenic sarcoma: OS) is the most common primary malignant bone tumor of long bones, whereas primary osteosarcoma of chest wall, especially in sternum, is extremely rare. We report a 57-year-old man with an immobile slow growing mass located in the middle of the sternum. The patient had no significant pain or tenderness and the past medical history was not remarkable. CT-scan sh...

The human temporal bone is an extremely complex structure. Direct axial and coronal CT sections are quite satisfactory for imaging the anatomy of the temporal bone; however, many relationships of the normal and pathologic anatomic detail of the temporal bone are better seen with direct sagittal CT sections. The sagittal projection is of interest to surgeons, as it has the advantage of following...

BACKGROUND AND PURPOSE Arachnoid granulations (AGs) of the posterior wall of the temporal bone are a rare cause of spontaneous CSF leakage. The purpose of this study was to investigate the prevalence and appearance of presumed AGs, evidenced by the posterior wall defects of the temporal bone with lobulated or scalloped margins on CT scans. MATERIALS AND METHODS We retrospectively reviewed CT ...

OBJECTIVE To evaluate the necessity of reconstructing the eroded bony boundaries after mucocele marsupialization when the mucoperiosteum has been spared. STUDY DESIGN Retrospective review of 308 patients treated for a sinonasal mucocele. Of these, 116 showed areas of bone reabsorption in their preoperative computed tomography (CT) scan. METHODS Of 116 patients showing one or more areas of b...

Purpose: To assess the role of 18F-NaF PET/CT in detection metastatic bone disease compared to 99mTc-MDP scan (+/-SPECT/CT). Methods: 64 adult patients with locally advanced primary tumor were enrolled this study. All underwent pretherapy and scan. Results: Among revealed positive metastases 26 patients, only 19 them have results scan, while remaining 7 falsely negative On other hand diagnosed ...

An experiment evaluated the impact of two typical features of virtual learning environments on anatomical learning for users of differing visuo-spatial ability. The two features studied are computer-implemented stereopsis (the spatial information that is based on differences in visual patterns projected in both eyes) and interactivity (the possibility to actively and continuously change one’s v...

Computed tomography (CT) of the temporal bone is used routinely in otology clinics. The development of multi-slice helical CT (MSCT) has improved the quality of images of the temporal bone and enhanced diagnostic competence significantly . However, MSCT images of minute bony structures in the temporal bone are not always clear enough to allow an accurate diagnosis and images of metal implants a...