• Tuberculosis and Respiratory Diseases
• /
• 제65권2호
• /
• pp.131-136
• /
• 2008

담즙흉은 담도 또는 담낭과 흉강 사이에 형성된 누공을 통해 담즙이 흉강으로 누출되어 흉수의 형태로 관찰되는 흉막염의 일종으로, 주로 흉강-복부 외상과 관련된 매우 드문 합병증이며 그동안 국내에는 담즙흉에 대한 문헌보고가 없었다. 이에 저자들은 최근 외상 후 흉막성 흉통과 호흡곤란을 호소하였고 담도결석 제거를 위한 경피경간담도내시경술 이후에 흉수가 발생한 환자에서 담즙흉으로 진단된 환자 1예를 경험하였기에 보고한다.

• 대한골관절종양학회지
• /
• 제9권2호
• /
• pp.200-205
• /
• 2003

목적: 근위 비골에 발생한 거대 세포종 환자 5명에 대한 임상 양상, 치료 방법 및 결과를 보고하고자 한다. 대상 및 방법: 1997년 1월부터 2001년 7월까지 근위 비골에 발생한 거대 세포종으로 수술적 치료를 하였던 환자 중 1년 이상 추시관찰(평균 2.2년: 1.1~5년)이 가능하였던 5예를 대상으로 하였다. 모든 예에서 수술 전 단순 방사선 검사, 자기 공명 영상 검사, 핵의학 검사를 시행하였다. 모든 예에서 비골 신경을 보존하면서 일괄 절제술 및 대퇴 이두근을 이용한 외측 측부 인대 재건술을 시행하였다. 수술 후 단순 방사선 검사 및 진찰 소견으로 국소 재발의 유무를 판단하였으며 내반 스트레스 검사로 슬관절 외측 불안정을 측정하였다. 결과: 환자의 평균 연령은 23세(21~29세)였으며 남자 1예, 여자 4예였다. 모든 환자에서 병변부의 동통이 주증상이었으며 2예에서는 종물이 촉지되었다. 모든 예에서 수술 전 자기 공 명 영상 검사상 T1 강조영상에서 병변내의 저 신호 강도와 T2 강조영상에서 고 신호 강도를 보였고, Technetium-99 m을 이용한 골주사 검사상 비정상적으로 증가된 골섭취 소견이 관찰되었다. 1예에서 수술 후 일시적 비골 신경 마비를 보인 경우를 제외하고 나머지 예에서 비골 신경 마비 및 종양의 국소 재발은 보이지 않았다. 최종 추시 관찰시 5예중 1예에서 다소의 외측 불안성이 있었으나 기능상 문제가 없었으며 나머지 4예에서는 내반 스트레스 검사상 안정성을 보였다. 결론: 근위 비골에 발생한 거대 세포종은 비골 신경을 보존하면서 일괄 절제술 및 대퇴 이두근을 이용한 외측 측부 인대 재건술을 시행하여 좋은 결과를 보였다.

• Journal of Magnetics
• /
• 제19권3호
• /
• pp.248-254
• /
• 2014

The purpose of this study is to figure out how uptake counts of technetium ($^{99m}Tc$) among radioisotopes in the human body are affected if computed tomography (CT), magnetic resonance imaging (MRI) and isotope examination are performed consecutively. $^{99m}Tc$ isotope material, iodinated contrast media for CT and paramagnetic contrast media for magnetic resonance (MR) were used as experimental materials. First, $^{99m}Tc$ was added to 4 cc normal saline in a test tube. Then, 2 cc of CT contrast media such as $Iopamidol^{(R)}$ and $Dotarem^{(R)}$ were diluted with 2 cc normal saline, and 2cc of MRI contrast media such as $Primovist^{(R)}$ and $Gadovist^{(R)}$ were diluted with 2 cc normal saline. Each distributed contrast media was a total of 4 cc and included 10m Ci of $^{99m}Tc$. A gamma camera, a LEHR (Low energy high resolution) collimator and a pin-hole collimator were used for image acquisition. Image acquisition was repeated a total of 6 times and 120 frames were obtained and uptake counts of $^{99m}Tc$ were measured (from this procedure). In this study, as a result of measuring the uptake counts of $^{99m}Tc$ using the LEHR collimator, the uptake counts were less measured in all contrast media than normal saline as a reference. In particular, the lowest uptake counts were measured when $Gadovist^{(R)}$, contrast media for MRI, was used. However, the result of measuring the uptake counts of $^{99m}Tc$ using the pin-hole collimator showed higher uptake counts in all contrast media, except for $Iopamidol^{(R)}$, than normal saline as a reference. The highest uptake counts were measured particularly when $Primovist^{(R)}$, contrast media for MRI, was used. In performing the gamma camera examination using contrast media and $^{99m}Tc$, it is considered significant to check the changes in the uptake counts to improve various diagnosis values.

• 한국임상수의학회지
• /
• 제22권1호
• /
• pp.21-25
• /
• 2005

This study was performed to assess therapeutic effect of the tibial plateau leveling osteotomy (TPLO) in dogs with experimentally transected cranial cruciate ligaments (CrCL). Nine healthy adult Beagle dogs were transected left CrCL under general anesthesia. The dogs were assigned to TPLO and non-TPLO control groups. The TPLO procedures for correcting the CrCL rupture in the left stifle of dogs were performed under sterile conditions. Before TPLO procedures, all dogs were screened by orthopedic and radiographic examinations. Dogs were lameness free for the previous three months, and when examined at the walk and trot on a hard surface, in a straight line and on a circle. Lateral and craniocaudal radiographs were done to confirm the soundness of the both knee joint in dogs and not detectable lesions were diagnosed. The dogs were intravenously injected with a 10 mci/kg of 99mTechnetium-methylene diphosphonate (99mTc-MDP) under general anesthesia. Scintigraphs were obtained using a large field of view gamma camera equipped a parallel-hole, low-energy about 3 hours after intravenous injection of 99mTc-MDP. Before CrCL transection and 4, 8, and 12 weeks after the procedures, scintigraphy were conducted. Bone uptake of the left stifle joint increased after the procedures in all dogs. When the bone uptake from the TPLO procedure was compared with that of the control, there was a significant difference (p < 0.05). At 12 weeks after the TPLO procedure, the dogs showed normal anatomical posture and gait. It is concluded that TPLO procedure was effective in reconstruct of the stifle joint in dogs with CrCL rupture.

• Journal of Chest Surgery
• /
• 제43권1호
• /
• pp.25-32
• /
• 2010

배경: 혈관질환 환자는 관상동맥질환 및 심장질환을 많이 동반함으로 인하여 혈관 수술 후 잠재되어 있는 심장질환이 악화 또는 유발될 수 있는 가능성이 있다. 이러한 심장질환을 확인하기 위한 검사중 비교적 간단하고 비침습적인 SPECT 촬영에 대한 효용성은 아직 논란이 되고 있다. 본 연구에서는 수술 전 SPECT를 촬영하고, 그 결과에 따른 검사 및 처치들이 혈관 수술 후 심장 합병증 발생에 미치는 임상적인 효과를 평가하고자 한다. 대상 및 방법: 2004년 4월부터 2007년 9월까지 3년 6개월간 본 병원에서 혈관 수술 전 아데노신 부하 Tc-99m 테트로포스민 SPECT를 촬영한 63명의 환자를 대상으로 하였다. 결과: SPECT 촬영 유소견의 심장 합병증 발생 예측에 대한 민감도와 특이도는 각각 41.2%와 52.2%로 비교적 낮게 나왔다. 그러나 비정상적인 SPECT 촬영결과를 보인 환자에게 관상동맥 조영술을 시행하고 관상동맥 병변에 대한 비정상 소견이 있을 때 관상동맥 중재적 시술 및 관상동맥 우회로술 등의 적극적인 처치를 한 경우 심장 합병증의 발생률이 낮은 경향을 보였다. 결론: SPECT 촬영은 혈관수술 후 심장 합병증 발생위험을 예측하기 위한 선별검사로서 효용성이 떨어진다.

• 대한핵의학회지
• /
• 제23권2호
• /
• pp.219-223
• /
• 1989

Inflammation scan using radiolabelled leukocytes has high sensitivity and specificity. Several methods for labelling leukocytes have been evaluated using P-32 diisopropyl fluorophosphate (DFP-32), H-3 thymidine, Cr-51 chromate, Ga-67 citrate and Tc-99m-sulfur colloid. In-111-oxine has proved so far to be the most reliable agent for labelling leukocytes. In-111-oxine is, however, expensive, not easily available when needed, and its radiation dose to leukocytes is relatively high. Moreover, resolution of the resultant image is relatively poor. Tc-99m is still the agent of choice because of, as compared with the indium, its favorable physical characteristics, lower cost and availability. Now the technique for labelling the leukocytes with technetium is successfully obtained using the lipophilic HAPAO with higher efficiency for granulocytes than for other cells. With this technique it is possible to label leukocytes in plasma to improve the viability of the leukocytes. Inflammation scan using Tc-99m-HMPAO has been evaluated in several laboratories, and difference in methods for separation and labelling accounts for difference in efficiency, viability and biodistribution of the labelled leukocytes. We performed inflammation scan using leukocytes labelled with Tc-99m-HMPAO in three dogs 24 hours after inoculation of live E. Coli and A. Aureus in their right abdominal wall. We separated mixed leukocytes by simple sedimentation using 6% hetastarch (HES) and labelled the leukocytes with Tc-99m-HMPAO in 20% cell free plama diluted with phosphate buffer solution(Fig. 1). Uptake was high in the liver and spleen but is was minimal in the lungs on whole body scan. Kidneys and intestine showed minimal activity although it was high in the urinary bladder(Fig. 2). Uptake of labelled leukocytes in the inflammation site was do(mite on 2 hour-postinjection scan and abscess was clearly delineated on 24 hour-delayed scan with high target-to-nontarget ratio(Fig. 3, 4). Inflammation scan using mixed leukocytes labelled with Tc-99m-HMPAO is very sensitive and specific in early detection of inflammation.

• 대한핵의학회지
• /
• 제31권1호
• /
• pp.30-35
• /
• 1997

지금까지 부하-휴식 1일 영상법과 휴식-부하 1일 영상법의 심근관류 신티그라피 영상을 비교한 연구는 있었으나 이들의 관동맥질환의 진단율을 비교한 연구는 국내외적으로 찾아보기 힘들다. 본 연구에서는 이들 두 가지 영상법의 관동맥질환 진단율을 비교하고자 하였다. 1996년을 둘로 나누어 전반기 (1월-6월)에는 부하-휴식 1일 영상법을, 그리고 후반기 (7월-12월)에는 휴식-부하 1일 영상법을 이용하여 심근관류 SPECT를 전향적으로 시행하였고, 이 중 1개월 이내에 관동맥조영술로 관동맥질환 유무가 진단된 280명 (부하-휴식 160명, 휴식-부하 120명)을 대상으로 관동맥질환 진단율을 비교하였는데, 부하-휴식 영상법의 예민도, 특이도 및 정확도는 99%, 35%, 68%였고, 휴식-부하 영상법은 각각 96%, 47%, 78%으로 두가지 방법 간에 차이가 없었고, 각 관동맥 분지별 진단율에서도 유의한 차이가 없었다 (p>0.05). 따라서, 휴식-부하 1일 영상법과 부하-휴식 1일 영상법 중 어떤 방법을 사용하더라도 관동맥질환을 같은 진단율로 진단할 수 있을 것으로 판단되었다.

• 대한핵의학회지
• /
• 제27권1호
• /
• pp.71-80
• /
• 1993

In order to evaluate the scintigraphic features of choledochal cyst and these diagnostic value, authors investigated the findings of fourteen patients with choledochal cyst undergone hepatobiliary scan with $^{99m}Tc$-DISIDA before surgery. Five cases demonstrated the decreased hepatic uptake at 5-minute image of which four cases revealed severe jaundice. Seven cases demonstrated visualization of the cystic dilated common bile duct within 1 hour after injection. Two cases showed the cyst activity between 1 and 12 hours, but the cyst activity was not visible in five cases. Nonvisualization of the gall bladder was noted in ten cases, while four cases demonstrated visualization of the gall bladder within 1 hour. The time of visualization of gut activity was variably delayed. The intestinal activity was found in three cases within 1 hour and appeared in three cases between 1 and 2 hours and eight cases showed no visible gut activity. In four cases, intrahepatic ductal prominence was visible on the scintigram. Seven cases showed early and persistent accumulation of tracer in the common bile duct. Three cases showed persistent photon-deficient area in the gall bladder region. Two cases showed early photon-deficient area around gall bladder region with progressive accumulation of tracer in the same region. Two cases showed no evidence of activity in the biliary tract but noted late excretion into the small intestine. We concluded that hepatobiliary scan using $^{99m}Tc$-DISIDA is a noninvasive test useful in the evaluation and the diagnosis of choledochal cyst.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
• /
• 제27권1호
• /
• pp.64-71
• /
• 2016

Objectives: The objective of this study was to examine the effects of osmotic-controlled release oral delivery system methylphenidate on changes in regional cerebral blood flow (rCBF) in children with attention-deficit hyperactivity disorder (ADHD) using single photon emission computed tomography (SPECT). Methods: A total of 26 children with ADHD (21 boys, mean age: $9.2{\pm}2.05$ years old) were recruited. Each ADHD participant was examined for changes in rCBF using technetium-99m-hexamethylpropylene amine oxime brain SPECT before and after 8 weeks methylphenidate medication. Brain SPECT images of pediatric normal controls were selected retrospectively. SPECT images of ADHD children taken before medication were compared with those of pediatric normal controls and those taken after medication using statistical parametric mapping analysis on a voxel-wise basis. Results: Before methylphenidate medication, significantly decreased rCBF in the cerebellum and increased rCBF in the right precuneus, left anterior cingulate, right postcentral gyrus, right inferior parietal lobule and right precentral gyrus were observed in ADHD children compared to pediatric normal controls (p-value<.0005, uncorrected). After medication, we observed significant hypoperfusion in the left thalamus and left cerebellum compared to pediatric normal controls (p-value<.0005, uncorrected). In the comparison between before medication and after medication, there was significant hyperperfusion in the superior frontal gyrus and middle frontal gyrus and significant hypoperfusion in the right insula, right caudate, right middle frontal gyrus, left subcallosal gyrus, left claustrum, and left superior temporal gyrus after methylphenidate medication (p-value<.0005, uncorrected). Conclusion: This study supports dysfunctions of fronto-striatal structures and cerebellum in ADHD. We suggest that methylphenidate may have some effects on the frontal lobe, parietal lobe, and cerebellum in children with ADHD.

• Tuberculosis and Respiratory Diseases
• /
• 제55권3호
• /
• pp.280-286
• /
• 2003

목 적 : 폐암의 골전이 진단을 위해 흔히 이용하는 골주사는 예민도는 높으나 특이도가 낮아서, 악성 병변과 양성 병변을 구분하는 데에는 유용성이 낮다. 최근 전신 촬영이 가능한 $^{18}FDG$ PET이 암 진단에 널리 이용되고 있으므로 폐암의 골전이를 진단하는데 있어서 골주사와의 차이를 비교하기 위해 후향적 연구를 시행하였다. 방 법 : 폐암으로 진단된 환자 중 골수사와 전신 $^{18}FDG$ PET를 시행한 시간 차이가 1달 이내인 92명을 대상으로 하였다. 골전이의 판정은 골주사와 $^{18}FDG$ PET에서 이상 부위를 단순 X-선, 자기공명영상으로 평가하거나, 추적 영상검사로 확진하였다. 결 과 : 폐암의 골전이를 판정하는데 있어서 골주사의 민감도, 특이도, 정확도는 각각 59%, 71%, 68%이었으며, $^{18}FDG$ PET의 경우 각각 82%, 94%, 91%으로 $^{18}FDG$ PET이 골주사보다 특이도와 정확도에서 유의하게 우월하였다(p<0.0001). 결 론 : 폐암의 골전이를 평가하는데 있어서 $^{18}FDG$ PET은 전통적인 골주사보다 유용한 검사로 생각된다.