• Journal of Veterinary Clinics
• /
• v.30 no.3
• /
• pp.193-195
• /
• 2013

An 18-month-old intact male Cocker Spaniel dog weighing 7.7 kg was referred with a 2-week history of severe regurgitation. Based on the screening examination and fluoroscopy, this patient was diagnosed as having esophageal dysmotility. Treatment with mosapride and feeding small amounts of canned food frequently in an elevated position resulted in a successful outcome. The severe regurgitation improved, and the esophageal transit time improved from 18 sec to 8 sec. This is the first case report describing the diagnosis and clinical management of esophageal dysmotility in a young dog in Korea.

• Journal of the Korean Society of Radiology
• /
• v.4 no.3
• /
• pp.19-25
• /
• 2010

Dysphagia is common and serious problems in post-stroke patients. The post-stroke dysphagia with aspiration is associated with dehydration, malnutrition, pneumonia, sepsis and death. Up to date, gag reflex and choking history used to decide the aspiration in clinical. The purpose of this study was to evaluate the aspiration and to choice the proper meal formation using by video fluoroscpic swallowing study(VFSS) with post-stroke dysphagia patients. 58 post-stroke patients and ten normal person participated to perform the VFSS with liquid type, puding, yoplait, rice mixed with barium(Ba). Two rehabilitation medicine doctors and a radiological technologist analysed the phase(oral, pharyngeal, esophageal phase)with video film, and checked the pharyngeal transition time(PTT). 38 patients showed abnormality in pharyngeal phase, 13 patients in oral and pharyngeal phase, 3 patients in oral phase, and 2 patients in pharyngeal and esophageal phase. 43 patients(65.2%) occured the aspiration, but 23 of 43 patients improved by the chin tuck position. Aspiration occured 34 patients in liquid type, 2patients in rice gruel and nothing in boiled rice. After VFSS, 13 of 23 patients change the intaking pathway from nasogastric tube(NGT) to oral, On the contrary with 3 of 42 patients from oral to NGT. Consequently VFSS is clearly effective to evaluate the aspiration with post-stroke dysphagia patients.

• Journal of radiological science and technology
• /
• v.30 no.3
• /
• pp.213-219
• /
• 2007

The purpose of this study is to evaluate shielding effect of radiation protector for interventional radiologists in procedures by measuring inside and outside of radiation protector. In this study, we measured the radiation dose of 4 interventional radiologists during TACE and PTBD procedure for 4 month(2005.05-2005.09). Absorbed dose were measured by TLD placed underneath and over radiation protector such as Goggle, Thyroid protector, Apron and placed on the 4th finger of Hand. In addition, we measured background radiation dose in the control room using TLD. During TACE procedure, using 0.07 mmPb Goggle decreased average 53.8% of radiation dose rate in continuous fluoroscopic mode and decreased average 77.6% of radiation dose rate in pulse fluoroscopic mode. Using 0.5 mmPb Thyroid protector decreased average 88.9% of radiation dose rate in continuous fluoroscopic mode and decreased average 92.8% in pulse fluoroscopic mode. During PTBD procedure, using 0.07 mmPb Goggle decreased radiation dose rate average 62.7%, 87.9% by 0.5 mmPb Thyroid protector, 90.5% by 0.5 mmPb Apron. The average fluoroscopic time of PTBD was 6.14 min. shorter than TACE procedure, but radiation exposure dose rate of PTBD was 3 times higher in total body dose, and 40 times higher in hand dose rate than TACE. Interventional radiologists must wear thicker protector recommended over 0.5 mmPb. Also, they must use lead Goggle during interventional procedure. Abdomen dose decreased average 38.4% by drawing a lead curtain under the patient's table, therefore, they must draw a lead curtain to shield scattering ray. Radiation exposure dose decreased average 59.0% by using pulse fluoroscopic mode. So radiologists would better use pulse fluoroscopic mode than continuous fluoroscopic mode to decrease exposure dose.

• The Journal of the Korea Contents Association
• /
• v.10 no.5
• /
• pp.343-350
• /
• 2010

We measured the radiation exposure for 55 persons (male: 36, female: 19) who was diagnosed with kidney and ureter stones and received ESWL. The absorbed dose was measured at the organ which is expected to absorb relatively much radiation (kidney, bladder, liver). The radiation dose measurement voltage 80kVp, current of 5mA as a fixed model of the human body by using the Rando phantom with Radiophotoluminescent Glass Dosimeter. Absorbed dose was measured for two times (5 minute and 10 minute, each) and converted to effective dose. Mean number of treatment was 1.8 times (1~4) per patient was the mean time of radiation exposure533 seconds (248-2516). For the treatment of right renal stone, the effective dose of right kidney, left kidney, liver and bladder was 2.458mSv, 0.152mSv, 1.404 mSv and 0.019mSv, respectively. For the treatment of left renal stone, the effective dose of right kidney, left kidney, liver and bladder was 2.496mSv, 0.252mSv, 0.178 mSv, and 0.017mSv, respectively. For the treatment of distal ureter stone, the effective dose of right kidney, left kidney and bladder was 0.009mSv, 0.01mSv and 3.742mSv, respectively.

• Journal of Chest Surgery
• /
• v.34 no.8
• /
• pp.611-614
• /
• 2001

To determine the efficacy and safety of endoscopic resection and ablation of superficial varicosities using a powered vein resector, irrigated illuminator. Material and Method: 83 consecutive patients were involved in the study. 103 limbs in 83 patients were treated using a minimal invasive, powered, vein resecting devide with cutaneous transillumination and tumescent anesthesia technique. There were 51 women and 32 men. All patients were operated under general anesthesia or regional anesthesia. Operative time and patient satisfaction scores were recorded along with the number of incisions made. Result: 83 patients(51/61.4% female, 32/38.6% male, aged 25-78 years) had varicose vein. Average age at the time of operation was 45 years(range, 25 to 78 years). There were 63 unilateral procedures and 20 bilateral operations. Operative time ranged from 24 to 46 minutes (average 35.3 minutes) in the unilateral procedure. The number of incisions per limb averaged 2.7(range, 2 to 5). Postoperative complications occurred in 7(8.4%) patients. Patients were asked to describe their pain on an analog scale ranging form 1 to 10 with r representing no pain and 10 worst imaginable pain. Immediately postoperative pain score was 2.4 Postoperative pain score at 72 hours had a mean score of 2.0. Postoperative pain score at 1 months were 1. Conclusion: Varicose vein removal using Transilluminated Powered Phlebectomy(TIPP) is a safe and efficient procedure. The procedure saves time, is easy to perform, and gives direct visualization and a distinct endpoint of the removal of veins. It is also less tedious to perform and gives good cosmetic results with significant pain relief.

• Journal of Chest Surgery
• /
• v.35 no.1
• /
• pp.60-63
• /
• 2002

Edwards Duromedics mechanical valve was introduced into clinical use in 1982 and is still being used today after several modifications. Valve-related complications after mechanical valve replacement are thiombo-embolism, endocarditis, valve malfunction, valve leaflet escape and fracture. Incidence of valve leaflet escape is very low. A 40 year-old male patient who had undergone mitral replacement with a 31mm Edwards Duromedics mechanical valve(model

• Journal of the Korean Society of Radiology
• /
• v.81 no.4
• /
• pp.852-862
• /
• 2020

Interventional radiology (IR) embolization requires image guidance to steer catheters to the site of bleeding, where embolic agents such as Gelfoam or coils are administered to stem blood flow. In addition to treating iatrogenic trauma, embolization is suitable for injuries precluding surgery such as blush-bleeding of the liver or kidney and for locating and treating intimal blood vessel tears. However, during hospital off-hours (such as nights and holidays), experienced IR personnel are not always available. In such situations, there is a dire need to build a coordinated IR team to treat seriously injured patients rapidly and reliably. This article reviews the current principles and techniques used in IR such as virtual fluoroscopy and their usefulness, and makes a convincing case for emergency IR.

• Journal of radiological science and technology
• /
• v.39 no.1
• /
• pp.27-33
• /
• 2016

The use of cardiac angiography (CA) and the interventional procedures is rapidly increasing due to the increase in modern adult diseases. Cardiovascular intervention (CI) is an examination method where radiation is applied to the same area for a long period, and thus may cause skin injury. In this study, we investigate the diagnostic reference level (DRL) of the cardiovascular intervention (CI) carried out by medical institutions and use it as a tool to reduce patient exposure dose. In this study, the DRL was set by acquiring information about the cumulative fluoroscopy time, cumulative fluoroscopy dose-area product (DAP), radiography DAP, cumulative DAP, air kerma, number of video clips, and the total number of images from the cardiac angiography and interventional procedures performed on 147 patients. The DAPs corresponding to the DRL of cardiac angiography(CA) and that of the interventional procedures were shown to be $44.4Gy{\cdot}cm2$ and $298.6Gy{\cdot}cm2$, respectively; the corresponding DRLs of fluoroscopy time were shown to be 191.5s and 1935.3s, respectively. A DRL is not a strict upper bound for radiation exposure. However, the process of setting, enacting, and reviewing the DRLs for the dose by medical institutions will contribute to a reduction in the unnecessary exposure dose of patients.

• Archives of Craniofacial Surgery
• /
• v.10 no.2
• /
• pp.131-134
• /
• 2009

Purpose: Mandible fractures are common in maxillofacial trauma and the incidence of condylar fracture is high. The management of mandibular condylar fracture continues to be controversial. Conservative treatment of it may lead to complications such as asymmetry, malocclusion, temporomandibular joint dysfunction. Moreover, open reduction can cause facial nerve injury, parotid gland injury, scarring and hematoma formation. We present a case of mandibular condylar fracture that was treated by manual reduction without incision under C-arm fluoroscopy. Methods: A 76-year-old female was admitted due to left side mandibular condylar fracture that required surgical intervention. Because of her age, history of diabetes mellitus, hypertension, she underwent closed manual reduction under general anesthesia. We adopted C-arm fluoroscopy as a method of identifying the fracture site and a evaluation of reduction state. C-arm fluoroscopy was set up like modified Towne's view. Results: The reduction was successful and didn't result in any complications that could occur in open reduction-facial nerve injury, infection, parotid gland injury, hematoma, avascular necrosis. The mandibular-maxillary fixations were removed after 4 weeks and patients were could open 3.5 cm after 6 weeks with physical therapy. Conclusion: We tried closed manual reduction of mandibular condylar fracture due to high risk of complication using C-arm fluoroscopy and did achieve anatomic reduction with avoiding open incision. This is simple, effective, reversible, time saving and fairly attemptable method in condylar fracture cases before open reduction.

• Journal of Korea Water Resources Association
• /
• v.43 no.9
• /
• pp.781-787
• /
• 2010

A new method for water level measurement method and its verification results are described. In this method, water surface in motion can be detected by temporal variation of pixel arrangement in successive digital images including the boundary between the staff gauge and the water surface. Laboratory and field tests were conducted for the two cases in which the staff gauge was contaminated by dirt or transparent due to clear water. The result shows water level can be accurately measure by this method for these two cases. It is expected that the accuracy of previous image stage gauge will be improved by the new method.