Sensation

This study aims to evaluate CT (Computed Tomography) characteristics through the estimation of HU (Hounsfield Unit) and the corresponding variations using coefficient of variation values for various materials as a function of physical factor. HU values for various materials with varying densities as a function of physical factor were measured using MDCT (Siemens SOMATOM Sensation 4, Germany). The results showed that the HU values were decreased and increased as a function of kVp and material density, respectively. Especially, the HU values for bone and iodine at 140 kVp were 32% and 42% smaller than those at 80 kVp, respectively. In case of iodine, the HU values also decreased and increased as a function of kVp and concentration, respectively. While the HU values were fixed as a function of mAs. The decreased ratio of HU values between 80 keV and 140 keV was different at various concentration and maximum difference was shown as 1.73 at 3% concentration. These results indicated that it may be possible to separate composition of materials, e.g. iodine and bone, using single source CT. The results showed that dual energy techniques using single source CT can be applied to material separation and expand CT imaging techniques to other practical applications.
Iodine ; Sensation

This study aims to evaluate CT (Computed Tomography) characteristics through the estimation of HU (Hounsfield Unit) and the corresponding variations using coefficient of variation values for various materials as a function of physical factor. HU values for various materials with varying densities as a function of physical factor were measured using MDCT (Siemens SOMATOM Sensation 4, Germany). The results showed that the HU values were decreased and increased as a function of kVp and material density, respectively. Especially, the HU values for bone and iodine at 140 kVp were 32% and 42% smaller than those at 80 kVp, respectively. In case of iodine, the HU values also decreased and increased as a function of kVp and concentration, respectively. While the HU values were fixed as a function of mAs. The decreased ratio of HU values between 80 keV and 140 keV was different at various concentration and maximum difference was shown as 1.73 at 3% concentration. These results indicated that it may be possible to separate composition of materials, e.g. iodine and bone, using single source CT. The results showed that dual energy techniques using single source CT can be applied to material separation and expand CT imaging techniques to other practical applications.
Iodine ; Sensation

No abstract available.
Infarction ; Sensation

PURPOSE: It is known that fusion is promoted in the presence of a peripheral fusion clue in patients with intermittent exotropia, X(T). Therefore, this study compared the results of the Worth 4-dot test (W4D) with the room lights on and off in order to determine the status of the binocular function. METHODS: The W4D test was performed with lights on and off, and the polarized 4-dot test (P4D) was administered in 52 X(T) patients. RESULTS: Among these 3 tests, the fusion rate was the lowest with distance in the W4D with the lights off at 9.6%, which was followed by the W4D with the lights on at 26.9% and the P4D at 57.7%. The fusion rate of the W4D with the lights on in the patients with a distance stereoacuity better than 120 seconds of arc (") was 50%, which was significantly higher than the 18.4% observed in the patients with a stereoacuity at 120" or worse (P=0.023). Among the 14 patients who showed fusion with the distance W4D with the lights on, 10 could not fused with the W4D with the lights off. Therefore, a weak motor fusion was observed in 71.4 % of these 14 patients. CONCLUSIONS: It is possible to verify the more natural condition of the binocular sensory function of patients with X(T) using either the P4D or the W4D with the lights on rather than with the lights off. Furthermore, the W4D test with the lights on can be performed together with and be compared with that conducted with the lights off, for a better understand of the degree of motor fusion.
Exotropia ; Humans ; Sensation ; Telescopes

Eagle's syndrome is a rare condition associated with recurrent throat pain, foreign body sensation and odynophagia. It is caused by elongation of the styloid process or calcification of the stylohyoid process. We present the clinical and radiologic findings of a case of Eagle's syndrome.
Foreign Bodies ; Pharynx ; Sensation

The authors obtained the following results through comparative investigation between experiences from authors clinical study of ureterolithotomy by posterior vertical incision devised by Gil-Vernet and Yoon`s clinical study of ureterolithotomy by posterior vertical incision and his lumbar incision. 1. Operation time was average 62 min. and blood loss was average about 50cc. So operation time and blood loss were similar to Yoon`s result but more or less reduced as compared with lumbar incision. 2. Postoperative urine leakage and ambulation time were 1 day and 2 day that were more or less reduced as compared with Yoon`s result. 3. Ipsilateral lower abdominal wall protrusion was noted postoperatively. We think, this is from subcostal nerve injury. 4. Postoperatively sensation change on subcostal nerve, ilohypogastric nerve and ilioinguinal nerve innervation sites were noted in half of all, but disappeared in several weeks. Considering above results, while posterior vertical incision has merits such as minimal operative invasion and early postoperative ambulation time, but it often notes inevitable nerve damage. So, we think better results would be gained by careful attention to nerve and vascular distribution.
Abdominal Wall ; Sensation ; Walking

No abstract available.
Sensation* ; Zygote Intrafallopian Transfer*

No abstract available.
Electrocardiography* ; Humans ; Pharynx* ; Sensation*

Subjective tinnitus can be defined as sound sensations (ringing or roaring) occurring in the absence of external auditory stimulus. It is one of the most widespread disorders of auditory system that might be caused by the peripheral auditory injury and insults to somatosensory levels. There were some theories in pathophysiology of tinnitus, such as change in biochemical systems, discordant dysfunction, and spontaneous hyperactivity of auditory tract or imbalance between inhibitory and excitatory transmitter actions of central auditory tracts. Theories related to neural plasticity and cortical reorganization have been recently introduced. Current understanding of pathophysiology in tinnitus is essential to therapeutic approaches. Although there were many studies addressing pathophysiology of tinnitus, controversies exist regarding the pathophysiology of tinnitus. The aim of this review was to review and summarize the recent studies related to pathophysiology of tinnitus.
Plastics ; Sensation ; Tinnitus*