No abstract available.
Osteoma, Osteoid* ; Spine*

Nine patients of clinically definite multiple sclerosis (MS) were examined by magnetic resonance imaging (MRI) at 1.0T. The MS plaques were seen in the brain and spinal cord in eight and three patients. respectively. The frequent sites of MS plaques were periventricular white matter, brain stem, and cervical cord. The shape of most brain MS plaques was round or finger-like configuration. The MS plaques showed high signal intensity on R2 weighted images and low or iso signal intensity on T1 weighted images in all nine cases. Contrast enhancement was seen in 4 cases. Mild brain atrophy was noted in 2 cases and mass effect in 1 case. The sites of cord MS plaques in three patients were C2-C4, C2-C5, and C4-C6 levels respectively. The cord MS plaques showed high signal intensity on T2 weighted image and contrast enhancement on Gd-DTPA enhanced T1 weighted images in all 3cases with mild cord expansion in 2 cases. In conclusion, MRI is a useful diagnostic tool in evaluationg the MS plaques involving central nervous system.
Atrophy ; Brain ; Brain Stem ; Central Nervous System ; Cervical Cord ; Gadolinium DTPA ; Humans ; Magnetic Resonance Imaging* ; Multiple Sclerosis* ; Spinal Cord ; White Matter

No abstract available.
Retrospective Studies ; Surgery, Oral ; Tracheostomy

Simulated three-dimensional (3D) imaging represents reformation of conventional sectional imaging data into a series of images that closely resemble the original studied structure. We tried to make 3D mucosal surface images of the sinonasal cavities, pharynx and larynx, and evaluated the feature of normal anatomy in 28 subjects. In the sinonasal cavities, 3D imaging was capable of demonstrating the inner wall of paranasal sinuses and its openings, and general status status of the nasal cavity. In the nasal cavity. In the nasopharynx, 3D imaging provided an easy concept of sectional images as 3D picture and displayed anatomic subsites and lesions comparable to that in fiberscope. In addition, 3D imaging had advantages in overcoming the technical limitations in fiberscope. In the larynx and hypopharynx, 3D imaging gave a 3D concept of the laryngeal structures and presented additive information not seen in axial iamges thus enabling access to regions beyond the scope of fiberscope. In conclusion, 3D imaging allows an easy conceptualization of transaxial CT images in complex anatomic areas and provides additional in formations undetectable in transaxial CT. We believe that the spaces of the sinonasal cavities, pharynx and larynx would be a new field of application of 3D image.
Hypopharynx ; Larynx* ; Nasal Cavity ; Nasopharynx ; Paranasal Sinuses ; Pharynx*

Simulated three-dimensional (3D) imaging represents reformation of conventional sectional imaging data into a series of images that closely resemble the original studied structure. We tried to make 3D mucosal surface images of the sinonasal cavities, pharynx and larynx, and evaluated the feature of normal anatomy in 28 subjects. In the sinonasal cavities, 3D imaging was capable of demonstrating the inner wall of paranasal sinuses and its openings, and general status status of the nasal cavity. In the nasal cavity. In the nasopharynx, 3D imaging provided an easy concept of sectional images as 3D picture and displayed anatomic subsites and lesions comparable to that in fiberscope. In addition, 3D imaging had advantages in overcoming the technical limitations in fiberscope. In the larynx and hypopharynx, 3D imaging gave a 3D concept of the laryngeal structures and presented additive information not seen in axial iamges thus enabling access to regions beyond the scope of fiberscope. In conclusion, 3D imaging allows an easy conceptualization of transaxial CT images in complex anatomic areas and provides additional in formations undetectable in transaxial CT. We believe that the spaces of the sinonasal cavities, pharynx and larynx would be a new field of application of 3D image.
Hypopharynx ; Larynx* ; Nasal Cavity ; Nasopharynx ; Paranasal Sinuses ; Pharynx*

Authors presented the serial changes of brain MRI findings in two cases of cryptococcal meningitis. The MRI findings of the first patient (53-year-old female) consisted of dilated Virchow-Robin spaces, leptomeningeal enhancement, cryptococcomas and hydrocephalus. Dilated Virchow-Robin spaces were noted on the first MR obtained 33 days after symptom onset. The size and number of dilated Virchow-Robin space gradually decreased since 119 days after symptom onset (62 days after treatment). Faint leptomeningeal enhancement was found at cerebellar region on the first MRI, which became more distinct and intense on the day 119, probably due to improper treatment. The leptomeningeal enhancement decreased on the day 156. Mild hydrocephalus was noted on MRI obtained 70 days after symptom onset, which markedly aggravated on the day 119. It decreased after steroid therapy alone. Enhancing crytococcomas of variable size were noted at the right temporal lobe and cerebellum on MRI of the day 119, which decreased in size and number on the day 156. On the day 295 MRI showed nearly disppearance of the dilated Virchow-Robin space, but faint leptomeningeal enhancement, cerebellar crytococcomas and hydrocephalus still remained. The MRI findings of the second patient (36-year-old female) showed the findings similar to those of the first patient. Initial MRI obtained 18 days after symptom onset showed no abnormal findings. Dilated Virchow-robin spaces were noted on the day 36 (13 days after treatment onset), which nearly disappeared on the day 109. Enhancing cryptococcomas in both basal ganglia and cerebral cortex and leptomeningeal enhancement were noted on MRI of the day 136. Both cryptococcomas and leptomeningeal enhancement decreased in size and enhancing degree on the day 157. Hydrocephalus was noted on the day 109.
Basal Ganglia ; Brain ; Cerebellum ; Cerebral Cortex ; Follow-Up Studies* ; Humans ; Hydrocephalus ; Magnetic Resonance Imaging* ; Meningitis, Cryptococcal ; Temporal Lobe

Authors presented the serial changes of brain MRI findings in two cases of cryptococcal meningitis. The MRI findings of the first patient (53-year-old female) consisted of dilated Virchow-Robin spaces, leptomeningeal enhancement, cryptococcomas and hydrocephalus. Dilated Virchow-Robin spaces were noted on the first MR obtained 33 days after symptom onset. The size and number of dilated Virchow-Robin space gradually decreased since 119 days after symptom onset (62 days after treatment). Faint leptomeningeal enhancement was found at cerebellar region on the first MRI, which became more distinct and intense on the day 119, probably due to improper treatment. The leptomeningeal enhancement decreased on the day 156. Mild hydrocephalus was noted on MRI obtained 70 days after symptom onset, which markedly aggravated on the day 119. It decreased after steroid therapy alone. Enhancing crytococcomas of variable size were noted at the right temporal lobe and cerebellum on MRI of the day 119, which decreased in size and number on the day 156. On the day 295 MRI showed nearly disppearance of the dilated Virchow-Robin space, but faint leptomeningeal enhancement, cerebellar crytococcomas and hydrocephalus still remained. The MRI findings of the second patient (36-year-old female) showed the findings similar to those of the first patient. Initial MRI obtained 18 days after symptom onset showed no abnormal findings. Dilated Virchow-robin spaces were noted on the day 36 (13 days after treatment onset), which nearly disappeared on the day 109. Enhancing cryptococcomas in both basal ganglia and cerebral cortex and leptomeningeal enhancement were noted on MRI of the day 136. Both cryptococcomas and leptomeningeal enhancement decreased in size and enhancing degree on the day 157. Hydrocephalus was noted on the day 109.
Basal Ganglia ; Brain ; Cerebellum ; Cerebral Cortex ; Follow-Up Studies* ; Humans ; Hydrocephalus ; Magnetic Resonance Imaging* ; Meningitis, Cryptococcal ; Temporal Lobe

No abstract available.
Technetium Tc 99m Dimercaptosuccinic Acid*

PURPOSE: The management of gluteal wound originated with burn is same as pressure sore. Pressure sores are managed surgically with two therapeutic components. One is a gross and sharp debridement and the other is a flap providing well-vascularized tissue to cover wounds. Central to the flap considerations is the tendency for recurrence mainly due to a poor blood supply, failure of tension-free closure and naive nursing care after operation, when reconstructive surgeons employ numerous surgical techniques in sores repair. The author used the gluteal artery perforator sparing and gluteal fasciocutaneous rotation advancement flap with V-Y closure to manage gluteal wound originated from burn. METHODS: Three cases of gluteal wound were treated with the gluteal artery perforator sparing gluteal fasciocutaneous rotation advancement flap with V-Y closure. The skin incision of conventional gluteal rotation flap is shortened to get a minimized flap size and adapts an advancement flap in a back cut pattern, supported laterally with V-Y closure for a tension-free closure. This superiorly (or inferiorly) based flap is elevated subfascially until one or two large musculocutaneous perforators of the inferior gluteal artery are encountered. The perforator down to its emergent point at the level of the piriformis muscle is dissected intramuscularly by splitting fibers of the gluteus maximus muscle in order to pivot freely. Then, the dead space is obliterated with a portion of the gluteus muscle transposed independently. The skin paddle is rotated to the defect area with the saved perforator(s) and closed the defect area. RESULTS: This technique encompasses the advantages of a perforator sparing flap, a fasciocutaneous rotation flap and an advancement flap with V-Y closure, providing a better vascularity, the flexibility of rerotation in the event of recurrence, preservation of the gluteus maximus muscle for ambulatory function, tension-free mobilization. Compared with other flaps which are previously used to manage pressure sores, one advantage is noted that the minimized operation wound is effective not only to improve the quality of patient's life in terms of position care but also to mitigate the associated wound- healing problems. CONCLUSION: This technique can be chosen primarily for management of various types of gluteal region wound including burn.
Arteries ; Burns ; Buttocks ; Debridement ; Imidazoles ; Muscles ; Nitro Compounds ; Nursing Care ; Pliability ; Pressure Ulcer ; Recurrence ; Skin

To evaluate characteristic CT findings of orbital pseudotumor and to define differentialpoints from other pathology, the authors retrospectively reviewed CT of 19 patients who were prooen to have orbital pseudotumor by clinical course and, in some cases, biopsy. A variety of CT findings including extraocular muscle thickening(11 cases), streaky infiltration of retroorbital fat(11 cases), mass formation(10 cases), optic nerve thickening (6 cases), conjunctival thickening (5 cases), scleral thickening(4cases), enlarged lacrimal gland(4 cases) and destruction of orbital bone (2 cases) were observed. Thickening of the anterior portion and irregular margin were characteristic findings of extraocular muscle and optic nerve lesions. Mass formation predominantly occurs in the anterior portion of the orbit. In most cases more than two orbital structures are involved by lesion.
Biopsy ; Humans ; Optic Nerve ; Orbit* ; Orbital Pseudotumor* ; Pathology ; Retrospective Studies